HP 83206A User manual

HP 83206A User manual
HP 83206A
TIA/EIA-136 Cellular Adapter
User’s Guide
HP Part Number 83206-90002
Revision H
Printed in U.S.A.
October 1999
© Copyright Hewlett-Packard Company, 1998
Notice
Information contained in this document is subject to change without
notice.
All Rights Reserved. Reproduction, adaptation, or translation without
prior written permission is prohibited, except as allowed under the
copyright laws.
This material may be reproduced by or for the U.S. Government
pursuant to the Copyright License under the clause at DFARS
52.227-7013 (APR 1988).
Hewlett-Packard Company
Education Tools Department
24001 E. Mission
Liberty Lake, WA 99019-9599
U.S.A.
2
Manufacturer’s Declaration
This statement is provided to comply with the requirements of the
German Sound Emission Directive, from 18 January 1991.
This product has a sound pressure emission (at the operator position) <
70 dB(A).
• Sound Pressure Lp < 70 dB(A).
• At Operator Position.
• Normal Operation.
• According to ISO 7779:1988/EN 27779:1991 (Type Test).
Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anforderungen der
Maschinenlärminformationsverordnung vom 18 Januar 1991.
• Schalldruckpegel Lp < 70 dB(A).
• Am Arbeitsplatz.
• Normaler Betrieb.
• Nach ISO 7779:1988/EN 27779:1991 (Typprüfung).
3
Safety Considerations
GENERAL
This product and related documentation must be reviewed for
familiarization with safety markings and instructions before operation.
This product has been designed and tested in accordance with IEC
Publication 1010, "Safety Requirements for Electronic Measuring
Apparatus," and has been supplied in a safe condition. This instruction
documentation contains information and warnings which must be
followed by the user to ensure safe operation and to maintain the
product in a safe condition.
SAFETY EARTH GROUND
A uninterruptible safety earth ground must be provided from the main
power source to the product input wiring terminals, power cord, or
supplied power cord set.
CHASSIS GROUND TERMINAL
To prevent a potential shock hazard, always connect the rear-panel
chassis ground terminal to earth ground when operating this
instrument from a dc power source.
SAFETY SYMBOLS
!
Indicates instrument damage can occur if indicated operating limits are
exceeded. Refer to the instructions in this guide.
Indicates hazardous voltages.
Indicates earth (ground) terminal
WARNING
A WARNING note denotes a hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal injury. Do not
proceed beyond a WARNING sign until the indicated conditions
are fully understood and met.
CAUTION
A CAUTION note denotes a hazard. It calls attention to an operation
procedure, practice, or the like, which, if not correctly performed or
adhered to, could result in damage to or destruction of part or all of the
product. Do not proceed beyond an CAUTION note until the indicated
conditions are fully understood and met.
4
Safety Considerations for this Instrument
WARNING
This product is a Safety Class I instrument (provided with a
protective earthing ground incorporated in the power cord).
The mains plug shall only be inserted in a socket outlet
provided with a protective earth contact. Any interruption of
the protective conductor inside or outside of the product is
likely to make the product dangerous. Intentional interruption
is prohibited.
Whenever it is likely that the protection has been impaired, the
instrument must be made inoperative and be secured against
any unintended operation.
If this instrument is to be energized via an autotransformer (for
voltage reduction), make sure the common terminal is
connected to the earth terminal of the power source.
If this product is not used as specified, the protection provided
by the equipment could be impaired. This product must be used
in a normal condition (in which all means for protection are
intact) only.
No operator serviceable parts in this product. Refer servicing
to qualified personnel. To prevent electrical shock, do not
remove covers.
Servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless
you are qualified to do so.
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the product from all voltage
sources while it is being opened.
Adjustments described in the manual are performed with
power supplied to the instrument while protective covers are
removed. Energy available at many points may, if contacted,
result in personal injury.
The power cord is connected to internal capacitors that my
remain live for 5 seconds after disconnecting the plug from its
power supply.
For Continued protection against fire hazard, replace the line
5
fuse(s) only with 250 V fuse(s) or the same current rating and
type (for example, normal blow or time delay). Do not use
repaired fuses or short circuited fuseholders.
6
CAUTION
Always use the three-prong ac power cord supplied with this product. Failure
to ensure adequate earth grounding by not using this cord may cause product
damage.
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 1010 and IEC 664 respectively. For indoor use only.
This product has autoranging line voltage input, be sure the supply voltage is
within the specified range.
Ventilation Requirements: When installing the product in a cabinet, the
convection into and out of the product must not be restricted. The ambient
temperature (outside the cabinet) must be less than the maximum operating
temperature of the product by 4° C for every 100 watts dissipated in the
cabinet. If the total power dissipated in the cabinet is greater than 800 watts,
then forced convection must be used.
Product Markings
CE - the CE mark is a registered trademark of the European
Community. A CE mark accompanied by a year indicated the year the
design was proven.
CSA - the CSA mark is a registered trademark of the Canadian
Standards Association.
7
Hewlett-Packard Warranty Statement for
Commercial Products
HP 83206A TIA/EIA-136 Cellular Adapter
Duration of Warranty: One Year
1. HP warrants HP hardware, accessories and supplies against defects
in materials and workmanship for the period specified above. If HP
receives notice of such defects during the warranty period, HP will,
at its option, either repair or replace products which prove to be
defective. Replacement products may be either new or like-new.
2. HP warrants that HP software will not fail to execute its
programming instructions, for the period specified above, due to
defects in material and workmanship when properly installed and
used. If HP receives notice of such defects during the warranty
period, HP will replace software media which does not execute its
programming instructions due to such defects.
3. HP does not warrant that the operation of HP products will be
uninterrupted or error free. If HP is unable, within a reasonable
time, to repair or replace any product to a condition as warranted,
customer will be entitled to a refund of the purchase price upon
prompt return of the product.
4. HP products may contain remanufactured parts equivalent to new in
performance or may have been subject to incidental use.
5. The warranty period begins on the date of delivery or on the date of
installation if installed by HP. If customer schedules or delays HP
installation more than 30 days after delivery, warranty begins on the
31st day from delivery.
6. Warranty does not apply to defects resulting from (a) improper or
inadequate maintenance or calibration, (b) software, interfacing,
parts or supplies not supplied by HP, (c) unauthorized modification
or misuse, (d) operation outside of the published environmental
specifications for the product, or (e) improper site preparation or
maintenance.
7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE
WARRANTIES ARE EXCLUSIVE AND NO OTHER
WARRANTYOR CONDITION, WHETHER WRITTEN OR ORAL IS
EXPRESSED OR IMPLIED AND HP SPECIFICALLY DISCLAIMS
ANY IMPLIED WARRANTIES OR CONDITIONS OR
MERCHANTABILITY, SATISFACTORY QUALITY, AND FITNESS
FOR A PARTICULAR PURPOSE.
8
8. HP will be liable for damage to tangible property per incident up to
the greater of $300,000 or the actual amount paid for the product
that is the subject of the claim, and for damages for bodily injury or
death, to the extent that all such damages are determined by a court
of competent jurisdiction to have been directly caused by a defective
HP product.
9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES
IN THIS WARRANTY STATEMENT ARE CUSTOMER’S SOLE
AND EXCLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE,
IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR
LOSS OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL,
CONSEQUENTIAL (INCLUDING LOST PROFIT OR DATA), OR
OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR
OTHERWISE.
FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW
ZEALAND: THE WARRANTY TERMS CONTAINED IN THIS
STATEMENT, EXCEPT TO THE EXTENT LAWFULLY
PERMITTED, DO NOT EXCLUDE RESTRICT OR MODIFY AND
ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS
APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.
9
DECLARATION OF CONFORMITY
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name:
Hewlett-Packard Co.
Manufacturer’s Address:
Spokane Division
24001 E. Mission Avenue
Liberty Lake, Washington 99019-9599
USA
declares that the product
Product Name:
TIA/EIA-136 Cellular Adapter
Model Number:
HP 83206A
Product Options:
This declaration covers all options of the above
product.
conforms to the following Product specifications:
Safety: IEC 1010-1:1990+A1 / EN 61010-1:1993
CAN/CSA-C22.2 No. 1010.1-92
EMC:
CISPR 11:1990/EN 55011:1991 Group 1, Class A
IEC 801-2:1984/EN 50082-1:1992 4 kV CD, 8 kV AD
IEC 801-3:1984/EN 50082-1:1992 3V/m
IEC 801-4:1988/EN 50082-1:1992 0.5 kV Sig. Lines, 1 kV Power Lines
Supplementary Information:
This product herewith complies with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC.
Spokane, Washington USA
November 20, 1995
Date
Vince Roland/Quality Manager
European Contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH
Department ZQ/Standards Europe, Herrenberger Strasse 130, D-71034 Böblinger, Germany (FAX+49-7031-14-3143)
10
Regional Sales and Service Offices
Eastern USA
Sales Office
Hewlett-Packard Company
2101 Gather Rd.
Rockville, MD 20850
Tel: (301) 258-2000
Eastern USA
Sales Office
Hewlett-Packard Company
2101 Gather Rd.
Rockville, MD 20850
Tel: (301) 258-2000
Midwestern USA
Sales and Service
Hewlett-Packard Company
5201 Tollview Drive
Rolling Meadows, IL 60008
Tel: (708) 342-2000
Southern USA
Sales and Service
Hewlett-Packard Company
1995 North Park Place
Atlanta, GA 30339
Sales
Tel: (404) 955-1500
Fax: (404) 980-7292
Service
Tel: (404) 850-2544
Fax: (404) 980-7292
Southern USA
Service Center
Hewlett-Packard Company
930 E. Campbell Road
Richardson, TX 75081
Tel: (214) 699-4331
Western USA
Service Center
Hewlett-Packard Company
301 E. Evelyn Avenue
Mountain View, CA 94041
Tel: (415) 694-2000
Fax: (415) 694-0601
Western USA
Sales and Service
Hewlett-Packard Company
24 Inverness Place East
Englewood, CO 80112
Sales
Tel: (303) 649-5000
Fax: (303) 649-5787
Service
Tel: (303) 649-5512
Fax: (303) 649-5787
Western USA
Sales and Service
Hewlett-Packard Company
1421 South Manhattan Avenue
Fullerton, CA 92631
Sales
Tel: (714) 999-6700
Fax: (714) 778-3033
Service
Tel: (714) 758-5490
Fax: (714) 778-3033
United States of America
Customer Information Center
Hewlett-Packard Company
Tel: (800) 752-0900
6:00 am to 5:00 pm Pacific Time
Parts Direct: 1-800-227-8164
South Eastern Europe
Sales and Service
Hewlett-Packard Ges. m.b.h.
Liebigasse 1
P.O. Box 72
A-1222 Vienna, Austria
Telephone: 43 222 2500 0
Telex: 13 4425
European Multicountry Region
Sales and Service
Hewlett-Packard S.A.
P.O. Box 95
150, Route dv Nant_dl_AVRIL
CH-1217 Meyrin 2
Geneva, Switzerland
Telephone: (41/22) 780-8111
Fax: (41/22) 780-8542
Northern Europe
Sales and Service
Hewlett-Packard Nederland B.V.
Startbaan 16
1187 XR
Amstelveen, The Netherlands
P.O. Box 667
Telephone: 31/20 5476911 X 6631
Fax: 31-20-6471825NL
11
Asia
Sales and Service
Hewlett-Packard Asia Ltd.
22-30/F Peregrine Tower
Lippo Center
89 Queensway, Central
Hong Kong
G.P.O. Box 863 Hong Kong
Telephone: 852-848-7777
Fax: 852-868-4997
Japan
Hewlett-Packard Japan, Ltd.
Measurement Assistance Center
9-1, Takakura-Cho
Hachioji-Shi
Tokyo 192-8510, Japan
Australia, New Zealand
Sales and Service
Hewlett-Packard Ltd.
P.O. Box 221
31-41 Joseph Street
Blackburn, Victoria 3130
Telephone: (61/3) 895-2895
Fax: (61/3) 898-9257
Canada
Sales and Service
Hewlett-Packard (Canada) Ltd.
5150 Spectrum Way
Mississauga, Ontario L4W 5G1
Canada
Telephone: (416) 206-4725
Fax: (416) 206-4739
Canada
Service Center
Hewlett-Packard Company
17500 Transcanada Highway
S. Serv Road
Kirkland, Quebec H9J 2X8
Canada
Telephone: (416) 206-3295
Canada
Service Center
Hewlett-Packard Ltd.
11120 178 Street
Edmonton, Alberta T5S 1P2
Canada
Telephone: (403) 486-6666
Fax: (403) 489-8764
Latin America
Hewlett-Packard Company
LAHQ Mexico City
Col. Lomas de Virreyes
11000 Mexico D.F.
Mexico
Telephone: (52/5) 326-4000
Fax: (52/5) 202 7718
United Kingdom
Sales and Service
Hewlett-Packard Ltd.
Cain Road
Amen Corner
Bracknell, Berkshire
RG12 1HN
United Kingdom
Telephone: 44 344 360000
12
Telephone: (81)-426-56-7832
Fax (81)-426-56-7840
International Sales Branch
Headquarters
Sales and Service
Hewlett-Packard S.A.
39 Rue Veyrot
P.O. Box 365
1217 Meyrin 1
Geneva, Switzerland
Telephone: 41-22-780-4111
Fax: 41-22-780-4770
Table of Contents
Contents
1 Getting Started
About the Cellular Adapter 32
Get ready to test 33
Described In this Chapter 33
Connecting the Cellular Adapter to the Test Set 34
Getting the Test Set to a Known State 34
Selecting the Proper Notch Filter for Audio Measurements
Zeroing the Average Power Meter 35
Going to the
TIA/EIA-136 CALL CONTROL Screen 37
Connecting a Mobile 38
Testing mobiles 40
34
About the PCS Interface 42
Firmware Revision Needed for PCS Testing
Installing the PCS Interface 43
Using the PCS Interface 44
42
13
Contents
2 Product Description
Purpose of this Cellular Adapter 50
The DCCH Call Processing Screens 51
CALL CONTROL Screen 53
CALL CONFIGURE Screen 54
DIGITAL
MEASUREMENT Screen 55
ANALOG MEASUREMENT Screen 56
Tasks You Can Perform with the Cellular Adapter 57
Call Processing Tasks 57
Measurements and Data available
58
Use the HP 8920 to Make Other Measurements 59
14
Table of Contents
Contents
3 Processing Calls
About Call Processing Tasks and Measurements 62
PCS measurements 63
Configure the Test Set to Emulate a Base Station 64
How to know when the call is dropped 68
Call Processing Procedures 69
Authentication 70
Initialize Call Processing with Authentication 72
Page a Mobile Station with Authentication 74
Originate a Call with Authentication 74
Perform an SSD Update 75
Perform a Unique Challenge 77
Caller ID 79
Country Code 80
Downbanding 81
FACCH SACCH Programming 82
Handoff 83
Choosing the proper combination of DVCC, slot, and channel number
84
MAHO 86
Message Waiting Indicator 87
Orders 88
Origination 89
Choosing the proper combination of DVCC, slot, and channel number
90
Page 91
15
Contents
Choosing the proper combination of DVCC, slot, and channel number
Registration 93
Release by Mobile 95
Release by Test Set 96
Short Message Services 97
To Send a Short Message to the Mobile 97
16
92
Table of Contents
Contents
4 Making Measurements
How to Read Data and Make Measurements 100
The Difference Between Data and Measurements 100
How to Switch Between Data and Meas Mode 101
Data Displayed 101
Connect State & Mobile Test Mode 102
Making changes to the Measurements display 107
How to determine if a call is dropped 111
Adjacent Channel Power 112
Analog Parameters 113
Average Power 114
BER 115
How the Test Set measures raw BER 116
Digital Measurement Screen Tests 118
Droop 120
EVM 121
Frequency Error 122
Magnitude Error 123
MAHO 124
Origin Offset 128
Phase Error 129
Power Measurements 130
Power Measurements Descriptions 131
Sync Location 138
17
Contents
TX Power 139
Measuring Absolute TX Power on an AVC 140
Measuring Relative TX Power on a DTC 141
Measuring Average Power on an AVC or DTC with the PCS Interface 142
WER (DTC or DCCH) 143
How the Test Set measures WER 144
18
Table of Contents
Contents
5 Programming the Cellular Adapter
Programming the Cellular Adapter 148
Programming in the Call Processing Subsystem 148
Program Example 149
Displaying the DCCH screens 154
Status Registers for DCCH Call Processing 155
Triggering and Remote to Local mode transitions 158
FACCH and SACCH programming 159
FACCH and SACCH description 159
Programming commands for FACCH and SACCH 159
19
Contents
6 HP-IB Syntax Diagrams
Overview 170
Diagram Conventions 171
DCCH 172
RF Path Control
192
Meas 193
SERV 198
Querying the Timebase
Out-of-Lock Indicator 198
Checking if Temperature Compensation is Necessary 198
Integer Number Setting Syntax
Real Number Setting Syntax
199
200
Multiple Real Number Setting Syntax
201
Number Measurement Syntax 202
Multiple Number Measurement Syntax 204
20
Table of Contents
Contents
7 Screen and Field Descriptions
The DCCH Call Processing Screens 206
DAMPS Call Processing
206
Parameters of the CALL CONTROL Screen 208
Parameter name 208
The CALL CONTROL screen 208
Access 209
Active 209
Amplitude 210
Band 210
CC Order 210
Chan 210
Connect 210
Cntl Order 211
Cntrl Channel 211
Display 212
DVCC 212
Handoff 213
MS ID 214
Order 215
Page 215
Pwr Lvl 216
Register 216
Release 217
SAT 217
SID 217
Slot 218
System Type 218
Traffic Channel Assignment 218
Type 218
VC Order 219
Voc 219
Voice Channel Assignment 219
Parameters of the DCCH CALL CONFIGURE Screen 220
# Neighbors 220
21
Contents
# Systems 221
% BIT ERROR 221
Access Burst 221
BAND (Neighbor List) 221
Channel (Neighbor List) 221
Country Code 221
DCCH DVCC 222
Dig Signal 222
DTC Burst 222
Power Meter 222
PSID/RSID 222
Public Sys 223
RF Path 223
Reg Conf 223
Sat Tol 224
SMS Contents 224
SMS Msg 224
SMS Size 224
SMS Type 225
SOC 225
Parameters of the DCCH CALL CONFIGURE II Screen 226
Calling Name 226
Calling Num 226
MS Capab 227
Name Size 227
Num Fax 227
Num SMS 227
Num Voice 227
Pres Type 228
Screen Ind 228
Temperature 228
Parameters of the DIGITAL MEASUREMENT Screen 229
The DIGITAL MEASUREMENT Screen 229
Amplitude 230
Dig Meas 230
DVCC 230
22
Table of Contents
Contents
Pwr Gain 230
Slot 231
Traffic Chan 231
Trig Type 232
Parameters of the ANALOG MEASUREMENT Screen 233
The ANALOG MEASUREMENT Screen 233
AF Anl In 233
AF Freq 234
AFGen1 Freq 234
AFGen1 To 234
Amplitude 234
De-Emphasis 234
Detector 235
Filter 1 235
Filter 2 235
FM Deviation 235
TX Freq Error 235
TX Power 235
Parameters of the DTC AUTHENTICATION Screen 236
A_KEY 237
Authent 237
CHECKSUM 237
ESN 237
RAND 238
RANDSSD 238
RAND_U 238
Parameters of the AVC AUTHENTICATION Screen 239
A_Key 240
Authent 240
ESN 240
RAND_A 241
RAND_B 241
RANDSSD_1 241
RANDSSD_2 241
RANDSSD_3 242
23
Contents
RAND_U 242
1 of N 242
24
Table of Contents
Contents
8 Connector Descriptions
Connector overview 244
Front Panel Connectors 245
Analyzer Baseband Data In 245
Analyzer Data Clock In 245
Analyzer Trigger In 246
Generator Baseband Data In 246
Rear Panel Connectors 247
Anl Trig Out 247
Bit Clk Out 247
Control I/O 247
CW RF In 248
Diag Out 248
Ext IF In 248
Frame Clk Out 249
Gen BB Data Out 249
Ref In 249
Serial Port 250
Symbol Clk Out 250
114.3 MHz IF In 250
10 MHz REF OUT 251
IQ RF OUT 252
25
Contents
9 Troubleshooting
General Operating Reminders 254
254
Remote Operation Considerations and Recommendations 257
Loopback BER 257
To Prevent Problems When Changing the System Type 257
Temperature Compensation 257
Handoffs 257
Releasing a Call 257
Going from the Data Display to the Measurement Display Mode 257
Changing from ANALOG MEAS Screen to CALL CONTROL Screen
Measurements 258
Zeroing the Power Meter With a PCS Interface 258
Triggering to Prevent Non-recoverable Firmware Errors 258
Reducing Wait Statements in Your Program 258
Problems With or Without a PCS Interface Present 259
Mobile will not camp on a Control Channel. 259
Message “DTC msg not acknowledged by mobile” occurs during attempt to page
mobile. 259
Mobile successfully answers page but immediately drops the call. 259
The message “Squelch Interrupt Overfull. Press MEAS RESET” is
displayed. 259
The message “Symbol clock is weak: accuracy is degraded” is displayed. 260
Problems Specific to Using a PCS Interface 261
Mobile will not camp on a Control Channel. 261
Message “Selection not supported in PCS mode” occurs. 261
The PCS Interface is on but the PCS Mode field does not appear on the CONFIGURE screen. 261
Messages 262
26
Table of Contents
Contents
10 TIA/EIA-136 Basics
What is TIA/EIA-136? 266
Basic Features of TIA/EIA-136 267
TIA/EIA-136 transceiver 268
The Transceiver Control Block 268
Modulation Methods 268
The Control Channels 268
TIA/EIA-136 Transceiver Block Diagram 270
Basic Functions of the DCCH in TIA/EIA-136 271
Power On and Initialization 271
DCCH Initialization Tasks 272
Call Origination 273
Call Release 276
Time Alignment and Other Orders 276
Registration and Periodic Registration 276
Paging 278
Handoffs and Mobile Assisted Handoff (MAHO) 279
Short Message Service (SMS) 280
Authentication 281
Non-public System Selection 282
Mobile Assisted Channel Allocation(MACA) 283
Dual Tone Multi-Frequency Signaling (DTMF) 283
27
Contents
11 Installing the Cellular Adapter
Connecting the Cellular Adapter to the HP 8920 Series Test
Set 286
I/Q Modulator and Relative TX Power Calibration 287
PCS Interface Connections 288
Connecting a Printer to the Serial Port
28
289
Table of Contents
Contents
Glossary 291
29
Contents
Index 299
30
1
Getting Started
Getting Started
This chapter introduces you to the HP 83206A TIA/EIA-136 Test System and will
show you how to prepare the Test System to test a mobile transceiver. Use of the
HP 83236B PCS Interface is also discussed.
This manual is written for those who are already familiar with the HP 8920B RF
Communications Test Set. If you want to learn more about using the Test Set
itself, refer to the HP 8920B User’s Guide.
31
Chapter 1, Getting Started
About the Cellular Adapter
About the Cellular Adapter
This Cellular Adapter is a test set adapter for the HP 8920B RF Communications
Test Set. It works with the Test Set to test mobile transceivers built according to
the TIA/EIA-136 standard. The Test Set and the Cellular Adapter are collectively
referred to as the Test System.
TIA/EIA-136 is a standard which describes a Time Division Multiple Access
(TDMA) cellular communications system. The major feature which distinguishes
TIA/EIA-136 from its predecessor TIA/EIA-627 is the addition of a Digital
Control Channel (DCCH). To learn more about TIA/EIA-136, refer to the TIA/
EIA standard, or read Chapter 10, “TIA/EIA-136 Basics,” on page 265.
83 20 6A
TDM A CE L LUL AR AD APT ER
PWR
REF
UNLOCK
ANALYZER
DATA
CLOCK IN
Figure 1
ANALYZER
BASEBAND
DATA IN
ANALYZER
GENERATOR
TRIGGER
IN
BASEBAND
DATA IN
83236B
PCS Interface
The Cellular Adapter Attached to a Test Set (shown with the optional PCS Interface)
32
S:\HP83206A\USRGUIDE\MANUAL\getstart.fm
Chapter 1, Getting Started
Get ready to test
Get ready to test
Refer to the following flowchart to see the steps necessary to get the Test System
ready to test a mobile.
Make sure the Cellular Adapter, and PCS Interface (if used), and the Test Set are properly connected. If the PCS
Interface is used, the HP 83236B System Connectivity test must be successfully completed before proceeding.
Turn on the PCS Interface (if used), then turn on the Test Set. See
“important: turning on the pcs interface” on page 43.
Audio
Testing?
YES
Set the Notch Filter to track
the audio frequency
generator (AFGen1).
NO
Select CALL CNTL from the
To Screen to go to the call
processing screen.
No
Select DCCH to activate
the TIA/EIA-136 screens.
Test
Set has
Option 006?
Yes
No
Using
PCS
Interface?
Yes
Perform the PCS Interface preparation
steps described in “Using the PCS
Interface” on page 44.
Select CALL CNFG to display
the screen with the Power Meter
Zero command.
Select ZERO to zero the Average
Power measurement.
Select CALL CNTL to return to
the primary call processing screen.
Connect the mobile to the Test Set.
33
Getting Started
Described In this
Chapter
Chapter 1, Getting Started
Get ready to test
Connecting the
If you purchased the Test Set with the Cellular Adapter (Test Set Option 800 or
Cellular Adapter to 801), they probably arrived completely assembled. If you need instructions to
make the connections between the Test Set and the Cellular Adapter, refer to
the Test Set
Chapter 11, “Installing the Cellular Adapter,” on page 285.
Getting the Test Set If your Test Set is already on, press PRESET to put it in a known state. If your
Test Set’s power is turned off, press POWER to start the Test Set. If a PCS
to a Known State
interface is connected, turn on the PCS interface before turning on the Test Set.
Selecting the
Proper Notch Filter
for Audio
Measurements
If you want to make audio measurements while testing TIA/EIA-136 mobiles, you
must set the audio frequency notch filter to track AF Generator 1. If you do not
want to make audio measurements, proceed to “Zeroing the Average Power
Meter” on page 35.
How to set the audio frequency notch filter to track AF Generator 1
1. Press and release the blue SHIFT key and then the DUPLEX key to display the
CONFIGURE screen.
2. Position the cursor on the Notch Coupl field and select AFGen1.
DUPLEX
H
83 206 A
TDM A CE LL UL AR AD APT ER
PWR
REF
UNLOCK
ANALYZER
DATA
CLOCK IN
ANALYZER
BASEBAND
DATA IN
ANALYZER
GENERATOR
TRIGGER
IN
BASEBAND
DATA IN
SHIFT
Notch Coupl
Figure 2
CNFG_SCR.pcxf
Presetting the Test System and Selecting the AFGen1 Notch Filter Selection
34
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Chapter 1, Getting Started
Get ready to test
Zeroing the
Average Power
Meter
TDMA Average Power can be measured if your Test Set is equipped with
Option 006, or if you have a PCS Interface connected. If you are not using the
PCS Interface, you need to zero the average power detector in the Test Set first
using the following procedure.
1. Disconnect all cables from the RF IN/OUT port of the Test Set.
2. Select CALL CNTL from the To Screen. (Use MORE to display the field CALL
CNTL.)
3. Select DCCH in the System Type field.
4. Select CALL CNFG from the To Screen.
5. Select Zero from the Power Meter field. This zeros the power for the Test System.
When the Test Set is finished zeroing, the Zero field is no longer highlighted.
6. Select CALL CNTL from the To Screen. This returns the Test Set to the primary call
processing screen.
rx-test.tif
CALL CNTL
More
System Type
Callcont.tif
CALL CNFG
Power Meter
dcch_cc.tif
CALL CNTL
Figure 3
Zeroing the Average Power Meter
35
Getting Started
See “Average Power” on page 114 and “Power Measurements” on page 130 for
more information.
Chapter 1, Getting Started
Get ready to test
HOW OFTEN
SHOULD YOU ZERO
THE AVERAGE
POWER METER?
A frequently zeroed Test System will ensure the highest measurement accuracy.
The Zero Power function measures the input power with no cables connected to
the Test System. The input power is measured for all gain settings. These
measurements are stored in static RAM, and the Test System uses them to
calculate any offsets when measuring power with a DUT attached. The values are
updated whenever you zero the power meter, and the latest values are stored for
the life of the static RAM backup battery.
You should zero power frequently if the Test System is still warming up, about
two to three times within the first two hours. You should zero power occasionally
even if the Test System is on continuously. (Occasionally can mean daily, weekly
or monthly, as you choose).
Zeroing TX Power
TX Power and Average Power are different measurements. TX Power is zeroed by
running a ROM program in the Test Set when the Cellular Adapter is attached.
See “TX Power” on page 139 for a description of the TX Power measurement.
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Chapter 1, Getting Started
Get ready to test
Going to the
In order to begin testing TIA/EIA-136 mobiles, the Test System must be at the
CALL CONTROL screen. In this screen, you can select the TIA/EIA-136 system,
TIA/EIA-136
CALL CONTROL control basic call processing functions, and make measurements.
Screen
1. Make sure you have already done the following:
• Zeroed the RF Power meter
• Selected the proper audio filter, if you will test audio
2. Select CALL CNTL from the To Screen. The CALL CONTROL screen will be
displayed.
3. Select DCCH from the System Type field. Now the CALL CONTROL screen shows
the parameters necessary to test the digital portion of TIA/EIA-136 mobiles.
CALL CNTL
rx-test.tif
More
callcont.tif
System Type
Figure 4
How to Access the DCCH CALL CONTROL Screen
37
Getting Started
How to access the TIA/EIA-136 CALL CONTROL screen
Chapter 1, Getting Started
Get ready to test
Connecting a
Mobile
A single RF connection is used to test the RF performance of a mobile. If you are
not using a PCS Interface, you connect the antenna port of the mobile to the RF
IN/OUT port of the Test Set. If you are using a PCS Interface, you connect the
antenna port of the mobile to the RF IN/OUT port of the PCS Interface. Audio test
connections are the same in all cases.
Most manufacturers have specific connectors which can connect the audio and the
RF signal to the Test Set. Figure 5 on page 1 38 shows how to connect a mobile to
a Test System without using a PCS Interface. Figure 6 on page 1 39 shows how to
connect a mobile to a Test System that includes the PCS Interface.
Rear-panel connections for the Cellular Adapter and PCS Interface are in Chapter
11, “Installing the Cellular Adapter,” on page 285.
DO NOT CONNECT
TO THE ANT IN PORT
ON THE FRONT
PANEL
Do not connect the antenna of the mobile to the ANT IN port on the front panel of the Test
Set. This will cause the overpower protection circuitry to activate when the mobile is
transmitting. Refer to the HP 8920 RF Communications Test Set User’s Guide for more
information.
RF IN/OUT
AUDIO OUT
ANT IN
AUDIO IN
HI
Antenna
Microphone In
LO
Speaker Out
Mobile Station
Manufacturer’s
Special Fixture
Figure 5
Connecting a Mobile to the Test Set Without the PCS Interface
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Chapter 1, Getting Started
Get ready to test
RF IN/OUT
AUDIO OUT
ANT IN
AUDIO IN
HI
Getting Started
LO
83236B
PCS INTERFACE
RF IN/OUT
Antenna
Microphone In
Speaker Out
Mobile Station
Manufacturer’s
Special Fixture
Figure 6
Connecting a Mobile to the Test Set With the PCS Interface
39
Chapter 1, Getting Started
Get ready to test
Testing mobiles
Use the following flowchart to plan your test method.
Connect mobile to Test Set
Decide what you want to test and how you want to test it:
Test mobile’s
call functions
Make RF measurements?
Programming either
Measurements or tests?
Zero the power meter
Use CALL CNTL to make test
set emulate Base Station
Perform desired call
processing functions
Read data from
CALL CNTL screen
Select Meas to start
measuring (based on
Test Set state)
Manually perform
tasks you want
to program
Map tasks to HP-IB
commands
Read measurements
Test other call processing
functions, or make
measurements
Figure 7
Select other measurements,
or change call processing
states
Overview of Tasks to Test a Mobile
40
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Build and debug
program
Chapter 1, Getting Started
Get ready to test
Proceed to Chapter 2, “Product Description,” on page 49, to learn more about the Test
System’s features and operation. Go to Chapter 3, “Processing Calls,” on page 61, to
learn about call processing, to Chapter 4, “Making Measurements,” on page 99 to
learn about measurements
Getting Started
41
Chapter 1, Getting Started
About the PCS Interface
About the PCS Interface
The HP 83236B PCS Interface can be used with the Test Set and Cellular Adapter
to test TDMA mobiles in the cellular band (800 MHz to 900 MHz) and those
operating in the North American PCS band (1850 MHz to 1990 MHz). The
interface serves as the frequency up/down converter for the Test Set for PCS
testing.
Firmware Revision PCS testing requires specific Test Set and Cellular Adapter firmware.
Needed for PCS
The Test Set’s firmware is upgraded using a single memory card. The Cellular
Testing
Adapter’s firmware is upgraded using two memory cards.
Test Set Firmware Requirement
•
Revision B.05.00 or higher. Check the revision number by pressing SHIFT, DUPLEX
(CONFIG) to access the CONFIGURE screen and reading the Firmware number in
the upper right corner.
Cellular Adapter Firmware Requirements
•
DSP revision 970501 or higher; Protocol revision 970730 or higher. These revisions are
checked using the following procedure:
1. Press SHIFT, DUPLEX (CONFIG) to access the CONFIGURE screen.
2. Select SERVICE from the To Screen menu. This is the only way to access the
SERVICE screen.
3. Select the Latch field on the SERVICE screen.
4. From the displayed list of latches, select the latch that corresponds to the firmware
version you want to verify.
• Select rx_dsp_revision for the receive DSP firmware revision.
• Select protocol_fw_revesion for the Protocol firmware revision.
5. Read the revision number in the Value field.
To Order a Firmware Upgrade
You can upgrade your firmware to the latest version available by ordering
HP 83206A Option R58. Contact your local HP Field Sales Engineer for ordering
assistance and information.
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Chapter 1, Getting Started
About the PCS Interface
Installing the PCS
Interface
The PCS Interface is connected by a serial cable to the Test Set. Interface control
is provided by the Test Set’s internal IBASIC controller. The timebase reference
for the PCS Interface (and Cellular Adapter) comes from the Test Set. No Frame
Clock connection is needed.
Instructions for connecting the PCS Interface and running the connectivity
software are provided in the HP 83236B PCS Interface Operating Manual
shipped with the interface. Connections to the interface are provided in “PCS
Interface Connections” on page 288.
IMPORTANT:
TURNING ON THE
PCS INTERFACE
In order for the Test Set to detect the connected PCS Interface, the PCS Interface must
already be turned on while the Test Set is powering up.
43
Getting Started
System Connectivity software is used to verify operation after connecting the PCS
Interface to the Test System. The software is run from the PCMCIA card shipped
with the PCS interface. Be sure to set the HP-IB/Serial switch on the PCS
Interface to the Ser position before turning the PCS Interface on and running the
test. During the test, you are asked to select serial or HP-IB control of the
interface. Select Serial Control and follow the remaining instructions displayed on
the Test Set’s screen.
Chapter 1, Getting Started
About the PCS Interface
Using the PCS
Interface
After installing the PCS Interface and successfully running the System
Connectivity test software, you need to perform some additional operations to
properly use the interface. These operations include:
1.
2.
3.
4.
5.
Initializing the PCS Interface for operation with the Test System.
Entering path losses into the PCS Interface.
Specifying the type of mobile your are testing.
Compensating for temperature changes.
Selecting the correct vocoder.
Initializing the PCS Interface
This must be done every time you turn the instruments on, even if you are not
testing PCS mobiles.
The PCS Mode field on the CONFIGURE screen initializes the PCS Interface and
tells the Test Set to alter its frequency and power settings accordingly. The
CONFIGURE screen is accessed by pressing SHIFT, DUPLEX (CONFIGURE).
See Figure 8 on page 1 45
DO NOT USE AUTOTUNING WITH THE
PCS INTERFACE
When the PCS Mode is set to On, the RF Analyzer’s Tune Mode field is automatically
set to Manual. You should not change this setting back to Auto while using the PCS
Interface because the automatic tuning function may not properly tune to the downconverted signal from the interface.
Entering Path Losses to the PCS Interface’s RF IN/OUT port.
Losses from cables and connectors between the mobile being tested and the PCS
Interface’s RF IN/OUT port need to be accounted for. The loss value is entered in
the PCS RF I/O field on the CONFIGURE screen. Setting the
RF Level Offset field to On allows this value to affect Test Set operation.This
causes the levels in and out of the interface to be compensated for, increasing
measurement accuracy. See Figure 8 on page 1 45.
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Chapter 1, Getting Started
About the PCS Interface
These fields allow you to enter and enable or disable compensation for any
path loss between the mobile and the PCS Interface’s RF IN/OUT port.
CNFG_SCRN.pcx
Getting Started
Figure 8
This field tells the Test Set to alter its
operation for controlling the PCS Interface.
Setting the PCS Mode control and entering PCS Interface path losses.
Selecting RF OUT Only as the RF Output Port
When the PCS mode is selected, the RF output of the PCS Interface can be
directed to the RF OUT Only port on the PCS Interface. (The RF input to the PCS
Interface always goes to the RF IN/OUT port.)
To select the RF OUT Only port as the RF output:
1. Access the CONFIGURE screen.
2. Set the PCS Mode field to On.
3. Set the PCS Source field to OUT.
When OUT is selected, the RF Level Offset field’s setting is not applied to the
output level.
45
Chapter 1, Getting Started
About the PCS Interface
Specifying the Type of Mobile Station You Are Testing:
Even though you may be operating a PCS-compatible phone in the cellular band,
it still uses the PCS protocol to perform call processing. You can also test
non-PCS phones through the PCS Interface, so you still need to tell the test set
what type of mobile you are testing. This is done using the MS Capab field on the
DCCH CALL CONFIGURE II screen. See Figure 9.
To specify the type of mobile you are testing:
1. Access the CALL CONTROL screen by highlighting the More field and selecting
CALL CNTL from the list of choices.
2. Set the System Type to DCCH.
3. Select CALL CFG2 from the To Screen list.
4. Set the MS Capab field to indicate the type of mobile you are testing.
• Select US PCS when testing PCS-capable mobiles (whether they are being tested
in the PCS band or not).
• Select Cellular when testing standard cellular band TIA/EIA-136 mobiles.
Periodically select the
Temperature
(Compensate) field to
compensate for
temperature changes
during operation.
Select the type of
mobile your are
testing: US PCS,
Cellular, or Band 10
(downband).
Calconf2.tif
Figure 9
Setting MS Capability and selecting Temperature Compensation.
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Chapter 1, Getting Started
About the PCS Interface
Compensating for Temperature Changes
As a general guideline, you should compensate for temperature changes when the
PCS Interface is first turned on, and again after running for 30 to 60 minutes. This
is done using the Temperature field on the DCCH CALL CONFIGURE II
screen. See Figure 9 on page 1 46.
To compensate for temperature changes:
1. Access the CALL CONTROL screen by highlighting the More field and selecting
CALL CNTL from the list of choices.
2. Set the System Type to DCCH.
3. Select CALL CFG2 from the To Screen list.
4. Select the Temperature field to begin the compensation process. This field will stay
highlighted while compensation is performed.
For automated testing, an IBASIC command is available that can be used to query
the necessity for temperature compensation. This function monitors temperature
changes in the instrument over time and, when queried, indicates whether
compensation needs to be performed or not. See Chapter 6, “HP-IB Syntax
Diagrams,” on page 169 for a listing of all programming syntax for the Cellular
Adapter.
47
Getting Started
Temperature changes during operation can affect PCS Interface operation. The
degree of internal temperature change depends mostly on the environment the test
system is exposed to; such as whether or not it is mounted in an enclosed rack of
test equipment or is free-standing with better air circulation. If the temperature
drifts more than 1°C from the last compensation, the temperature compensation
operation will recalibrate to obtain the best power measurement accuracy.
Chapter 1, Getting Started
About the PCS Interface
Selecting the Correct Vocoder
Two different vocoder standards can be used to test mobiles: VSELP and ACELP.
You need to select the proper vocoder for the mobile you are testing. This is done
using the Voc: field on the CALL CONTROL screen.
1. Access the CALL CONTROL screen by highlighting the More field and selecting
CALL CNTL from the list of choices.
2. Set the System Type to DCCH.
3. Select the Voc: field and choose the appropriate vocoder standard.
48
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2
Product Description
Product Description
This chapter shows the TIA/EIA-136 screens and explains their purpose. It also
identifies features of the Cellular Adapter.
49
Chapter 2, Product Description
Purpose of this Cellular Adapter
Purpose of this Cellular Adapter
This Cellular Adapter in conjunction with the HP 8920 Series RF
Communications Test Set enables testing of the following cellular systems:
TIA/EIA-136 (DCCH), TIA/EIA-627 (DAMPS or TDMA), and AMPS. This
Cellular Adapter contains the hardware and firmware necessary to test DCCH and
DAMPS. The AMPS hardware and firmware is contained in the HP 8920.
Table 1
DAMPS and DCCH Channels
DAMPS (TIA/EIA-627)
DCCH (TIA/EIA-136)
Digital Traffic Channel
Digital Traffic Channel
Analog Voice Channel
Analog Voice Channel
Analog Control Channel
Analog Control Channel
-
Digital Control Channel
If you want to test a TIA/EIA-136 mobile, use System Type DCCH. If you want to
test an TIA/EIA-627 phone, use System Type DAMPS.
Items in this manual are valid for both DCCH and DAMPS, unless otherwise
noted. Symbols that alert you to system-specific topics are shown in Figure 10.
TIA/EIA 627
TIA/EIA-136
DCCH specific topic
Figure 10
DAMPS specific topic
Symbols Used to Identify System-Specific Topics
To choose between the DCCH and DAMPS systems, do the following:
1
2
3
Press PRESET on the Test Set to get the Test System into a known state.
Select CALL CNTL from the To Screen (use More to display the CALL CNTL
choice).
Choose your desired system from the System Type field. DCCH is the TIA/EIA-136
system, DAMPS is the TIA/EIA-627 system.
50
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Chapter 2, Product Description
The DCCH Call Processing Screens
The DCCH Call Processing Screens
The Cellular Adapter provides a set of screens which emulates a cellular base
station. This set of screens for DCCH is called the DCCH Call Processing
Subsystem. The screens enable you to see data which has been transmitted
between the mobile and the base station, and to make measurements of channel
parameters.
The primary screen is the CALL CONTROL screen. From the CALL CONTROL
screen you can access other screens in the DCCH Call Processing Subsystem.
Note that these DCCH screens are only available when the System Type field on
the CALL CONTROL screen is set to DCCH.
51
Product Description
For detailed descriptions of each field on the call processing subsystem screens,
see Chapter 7, “Screen and Field Descriptions,” on page 205.
Chapter 2, Product Description
The DCCH Call Processing Screens
CALL CONTROL
- Connect mode measurements:
EVM, Adj Ch Power,
Average Power, MAHO,
phase error, magnitude
error, origin offset, droop,
sync location, frequency error
TX power, AF frequency,
FM deviation
- measures DCCH, ACC,
DTC, AVC
- control call processing
To Screen
CALL CNFG
CALL CFG2
ANLG MEAS
SPEC ANL
AUTHEN
DIG MEAS
Easy Access to
the Spectrum Analyzer
CALL CONFIGURE:
- No measurements are available on this screen.
- Zero the Average Power Meter
- Configure Public System parameters
- Configure Neighbor systems
- Configure Short Message Services parameters
CALL CONFIGURE II:
- No measurements are available on this screen.
- Specify the number of Voice, SMS, and Fax
messages waiting.
- Temperature compensation
- Downbanding
- Configure Caller ID messages.
ANALOG MEAS:
- Measure power and other parameters of an
AVC.
- Alter RF Generator Amplitude, AF Generator
settings, and Audio Analyzer settings.
AUTHENTICATION:
- Turn authentication on and off, and define
various parameters such as the A_key and
RAND.
DIGITAL MEASUREMENTS:
- Measure power and other parameters of a DTC.
- Alter the RF Generator Amplitude
- Specify parameters used to decode and analyze a
received DTC.
Figure 11
The Screens for Testing TIA/EIA-136
To select the primary screen (CALL CONTROL screen), do the following:
1
2
3
Press PRESET on the Test Set to get the Test System into a known state.
Select CALL CNTL from the To Screen (use More to display the CALL CNTL
choice).
Select DCCH from the System Type field. Now the TIA/EIA-136 CALL CONTROL
screen is displayed.
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Chapter 2, Product Description
The DCCH Call Processing Screens
CALL CONTROL The CALL CONTROL screen is the primary screen of the DCCH Call Processing
Subsystem. It controls call setup and maintenance functions for base station
Screen
emulation. From this screen, you can set basic parameters of the channel, such as
Phone Number, Control Channel Number, Amplitude, Voice Channel, and Power
Level.
The CALL CONTROL screen transmits on DCCH, ACC, DTC, or AVC.
The CALL CONTROL screen can display either data or measurements. Select
data or measurements by toggling the Display field in the upper-left corner
of the screen.
NOTE:
The measurements of the CALL CONTROL screen are only displayed while the Test
System is in Connect state; a call must be in process. For measuring parameters without a
call in process, see “DIGITAL MEASUREMENT Screen” on page 55.
Product Description
This area
displays data
and measurements
when active.
These
annunciators
show the status
of the Test
Set.
These are the
controls for
base station
emulation.
callcont.tif
Figure 12
The CALL CONTROL Screen for TIA/EIA-136
53
Chapter 2, Product Description
The DCCH Call Processing Screens
CALL
CONFIGURE
Screen
The CALL CONFIGURE screen provides additional controls for TIA/EIA-136
features. Refer to the field descriptions in Chapter 7, “Screen and Field Descriptions,”
on page 205 for more information.
No data or measurements are displayed on the CALL CONFIGURE screen. The
Test Set can be in Connect mode, but no call processing actions can be taken here.
These are the controls available in this screen:
•
•
•
•
•
•
•
•
•
•
•
•
DVCC value for the DCCH
SAT tone tolerance
Zero the power meter
Downbanding
IQ modulation switching
Country Code
Access burst type
DTC burst type
Digital Signal format
Neighbors configuration
Short Message Service (SMS)
Public System
dcch_cc.tif
Figure 13
The CALL CONFIGURE Screen
54
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Chapter 2, Product Description
The DCCH Call Processing Screens
DIGITAL
MEASUREMENT
Screen
This screen enables measurements on a DTC (Digital Traffic Channel) by using
the Mobile Station Test Interface, as specified in TIA/EIA Interim Standard
IS-137. It also supports the TIA/EIA-627 Test Interface. Refer to the field
descriptions in Chapter 7, “Screen and Field Descriptions,” on page 205 for more
information.
The difference between the measurements displayed on this screen and those
displayed on the CALL CONTROL screen is the connect state of the Test Set and
mobile. The CALL CONTROL screen requires that the Test Set be in the Connect
state (that is, maintaining a call with a mobile). The DIGITAL MEASUREMENT
screen does not require the Connect state. It does, however, require that the mobile
be in a special test mode as described in the standards mentioned earlier.
The test mode is enabled via the test interface. Each manufacturer which supports
this test interface provides a connector as per the specification. The individual
manufacturer should provide instructions for putting the mobile in the test mode.
Product Description
dig_meas.tif
Figure 14
The DIGITAL MEASUREMENT Screen
55
Chapter 2, Product Description
The DCCH Call Processing Screens
ANALOG
MEASUREMENT
Screen
This screen allows you to make measurements on an AVC (Analog Voice
Channel). These measurements are the same as the AMPS Analog Measurement
screen. Refer to the field descriptions in Chapter 7, “Screen and Field Descriptions,”
on page 205 for more information.
----
Ana-meas.tif
Figure 15
The ANALOG MEASUREMENT Screen
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Chapter 2, Product Description
Tasks You Can Perform with the Cellular Adapter
Tasks You Can Perform with the Cellular Adapter
Call Processing
Tasks
The following call processing tasks can be performed with the Cellular Adapter.
The measurements which can be performed are listed in the next section.
Call Processing Tasks
•
TIA/EIA 627
Call control on Digital and Analog Control Channels (DCCH and ACC)
(ACC only for IS-54)
Register on Digital Traffic Channel (DTC) or Analog Voice Channel (AVC)
Page a mobile to connect to a DTC or AVC
Accept a mobile origination, assign to DTC or AVC
Handoff from AVC to DTC via either DCCH or ACC
Handoff from DTC to AVC via either DCCH or ACC
Release by Test Set
Release by mobile
Send Orders (Power level changes)
Control MAHO (including measuring neighbor channels)
Slot Changes
SAT changes
DVCC codes
Country code
Calling number
Access and DTC burst variations
Unique programming of FACCH and SACCH messages (via HP-IB only)
Send Short Message Service messages to the mobile.
Send Caller ID messages to the mobile.
Product Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
57
Chapter 2, Product Description
Tasks You Can Perform with the Cellular Adapter
Measurements and The following measurements can be made with the Cellular Adapter.
Data available
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
EVM1 (Error Vector Magnitude, measured over 1 time slot)
EVM10 (EVM of first 10 bits of 10 bursts, averaged)
BER (bit error rate)
WER (word error rate)
adjacent channel power, measured on six adjacent channels
TX frequency error
phase error
magnitude error
origin offset
droop
sync location
average power (with Option 006)
TX Power - absolute (with PCS Interface)
TX Power - relative
MAHO (mobile reported BER and RSSI)
MAHO, BER, or WER with inserted bit errors
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Chapter 2, Product Description
Use the HP 8920 to Make Other Measurements
Use the HP 8920 to Make Other Measurements
This TIA/EIA-136 product is attached to a fully functioning HP 8920B. You can
use the Test Set for all of your analog measurements, including AMPS call
processing.
If you would like to test a TIA/EIA-136 mobile with an AMPS base station
emulation, select System Type AMPS in the CALL CONTROL screen. Then the
Test Set will emulate an AMPS base station. See the HP 8920 RF
Communications Test Set User’s Guide for more information about the analog call
processing subsystem.
59
Product Description
If you want to test the analog portion of a TIA/EIA-136 phone with a TIA/EIA136 base station emulation, select System Type DCCH and Control Channel
Type ACC.
Chapter 2, Product Description
Use the HP 8920 to Make Other Measurements
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3
Processing Calls
Processing Calls
This chapter explains how to use the DCCH Call Processing screens to perform
call processing tasks such as pages, originations, registrations, and so on.
61
Chapter 3, Processing Calls
About Call Processing Tasks and Measurements
About Call Processing Tasks and Measurements
The Call Processing subsystem of the HP 8920 and Cellular Adapter can be set up
to emulate a TIA/EIA-136 standard base station.
Primary call processing tasks such as registrations, pages, handoffs, and releases
can be made with just one screen: the CALL CONTROL screen. Some of the
major call processing parameters can also be set on this screen. See “Parameters
of the CALL CONTROL Screen” on page 208
More parameters and features, such as Short Message Services, can be controlled
with the CALL CONFIGURE screen. See “Parameters of the DCCH CALL
CONFIGURE Screen” on page 220
Message Waiting Indicators and Caller ID features are controlled on the CALL
CONFIGURE II screen. See “Parameters of the DCCH CALL CONFIGURE II
Screen” on page 226
Measurements in the Digital test mode can be made in the DIG MEAS screen. See
“Digital Measurement Screen Tests” on page 118.
Measurements on the Analog Voice channel can be made in the Connect state or
the ANLG MEAS screen. See “Analog Parameters” on page 113
Authentication is controlled on the AUTHENTICATION screen. See “Parameters
of the DTC AUTHENTICATION Screen” on page 236
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Chapter 3, Processing Calls
PCS measurements
PCS measurements
PCS compatible mobiles are tested using the HP 83236B PCS Interface connected
to the Test System. After the interface is connected and some controls are set to
indicate its presence in the system, you can proceed to test
PCS-compatible mobiles the same way you test non-PCS TIA/EIA-136 mobiles.
See “About the PCS Interface” on page 42.
Processing Calls
63
Chapter 3, Processing Calls
Configure the Test Set to Emulate a Base Station
Configure the Test Set to Emulate a Base Station
Before you can use the Test Set to perform call processing tasks, it must be
configured to emulate the base station.
Use the following procedures to prepare the Cellular Adapter to emulate a base
station.
How to emulate a base station
A Access the DCCH CALL CONTROL screen. See “A. How to access the DCCH
CALL CONTROL screen” on page 65
B Set up the basic channel parameters. See “B. Make the following settings on the
CALL CONTROL screen:” on page 65
C Define the type of mobile you are testing (PCS or cellular) and compensate for temperature variation if a PCS Interface is present. See “C. Make the following settings on
the CAll CONFIGURE II screen:” on page 66
D Put the Test Set in Active state to emulate a base station. See “D. Put the Test Set in
Active state to emulate a base station” on page 67
Once you have the Test Set configured, you are ready to perform call processing tasks
such as origination, registration, and so on.
PCS OPERATION
SAVING YOUR TEST
SYSTEM
CONFIGURATION
If you are using the PCS Interface, be sure to turn on the interface before turning on the Test
Set. Also, set the PCS Mode field on the CONFIGURE screen to On before accessing the
CALL CONTROL screen to test a mobile.
After configuring the Test System to meet your test needs, you can save the configuration for later use in a SAVE/RECALL register. This eliminates the need to manually
reconfigure the Test System each time you use it.
There are two ways to save your test configuration:
1) Press SHIFT, RECALL (SAVE), and enter a name (such as DCCH_PCS). The next
time you turn the Test System on, you can press RECALL and select the name you
entered. The Test System returns to the same state it was at when you saved the settings.
2) Press SHIFT, RECALL (SAVE), and enter the name “POWERON”. The next time
you turn the Test System on, the Test System will automatically re-establish all settings you saved.
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Chapter 3, Processing Calls
Configure the Test Set to Emulate a Base Station
CAUTION: SAVING
SETTINGS FOR PCS
OPERATION
To use SAVE/RECALL registers, you must use the same hardware configuration present
at the time the register is created. If you save instrument settings when a PCS Interface is
connected to the Test Set, the Test Set expects to detect the presence of the interface when
the register is recalled. If the PCS Interface is not connected to the Test Set when the register is recalled, or the interface is turned off, a non-recoverable firmware error occurs. If
you encounter this error, the Test Set must be turned off, and the PCS Interface must be
connected and turned on, before the Test Set can power up normally and function correctly.
Emulating a Base
Station
A. How to access the DCCH CALL CONTROL screen
1. Verify that you have already done the following (refer to Chapter 1, “Getting
Started,” on page 31):
• Zeroed the RF Power meter
• Selected the proper audio filter, if you want to test audio
• Connected the mobile to the Test Set
2. Select CALL CNTL from the To Screen. The CALL CONTROL screen will be
displayed.
3. Select DCCH from the System Type field. Now the CALL CONTROL screen shows
the parameters necessary to test TIA/EIA-136 mobiles.
B. Make the following settings on the CALL CONTROL screen:
System Type: DCCH
Define the settings for the control channel that you want your mobile to access on
power up:
•Choose Dig if you want the DCCH
•Choose Analog if you want the ACC
•Choose Cellular to camp on a 850 MHz band control channel.
•Choose PCS if you want to camp on a 1900 MHz band control channel.
Amplitude: enter the amplitude of the control channel.
SID: enter the System Identification (in decimal format) of the base station to be emulated.
65
Processing Calls
Cntrl Chan: enter your desired control channel number.
Chapter 3, Processing Calls
Configure the Test Set to Emulate a Base Station
Define the settings for the traffic channel that you want your mobile to be assigned to
when establishing a call:
•
•
•
Choose DTC to set up a Digital Traffic channel.
• Type: DTC
• Band: Select PCS or Cellular.
• Chan: Enter your desired channel number
• Slot: Enter your desired slot number.
• Pwr Lvl: Enter your desired power level.
• DVCC: Enter your desired DVCC.
Choose AVC to set up a Analog Voice channel.
• Type: AVC
• Chan: Enter your desired channel number.
• Pwr Lvl: Enter your desired power level.
• SAT: Choose your desired SAT frequency.
Voc: Select the type of vocoder used by the mobile.
• VSELP is most often used for non-PCS compatible mobiles.
• ACELP is most often used for PCS-compatible mobiles.
C. Make the following settings on the CAll CONFIGURE II screen:
•
•
•
•
Select CALL CFG2 from the To Screen menu.
Choose MS Capab to indicate the type of mobile you are testing.
• Select Cellular if the mobile is not PCS-compatible.
• Select US PCS if your mobile is PCS-compatible.
If a PCS Interface is used: Select Temperature to compensate for temperature
changes in the PCS Interface.
Press the PREV key to return the CALL CONTROL screen (or select CALL CNTL
from the To Screen menu).
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Chapter 3, Processing Calls
Configure the Test Set to Emulate a Base Station
D. Put the Test Set in Active state to emulate a base station
1. Select Active from the list on the left side of the screen.
2. The Active annunciator lights up when the Test Set is emulating a base station.
When the base
station emulation is on,
this annunciator
lights up.
Select Active.
callcont.tif
Figure 16
CALL CONTROL Screen with Test Set in Active State
Processing Calls
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Chapter 3, Processing Calls
Configure the Test Set to Emulate a Base Station
How to know when There are several ways the Test Set notifies you when a call has been dropped.
the call is dropped Any of the following situations may occur.
Connect state ends
If the Connect annunciator goes off, and the Test Set returns to the Active state,
the call has dropped or ended.
DTC is not detected
If communication fails on the Reverse DTC, a message will appear at the top of
the screen: “No Reverse DTC is being detected, loss of Traffic
Channel.” The Test Set will return to Active state.
Analog connection ends
If communication fails on the AVC, a message will appear at the top of the screen:
“RF Power Loss indicates loss of Voice Channel.” The Test Set will
return to Active state.
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Chapter 3, Processing Calls
Call Processing Procedures
Call Processing Procedures
You can use the procedures in this chapter to test your mobile station. In the
following list, the most commonly used procedures are listed first. The procedures
are presented alphabetically by procedure name.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
“Registration” on page 93
“Page” on page 91
“Origination” on page 89
“Handoff” on page 83
“Orders” on page 88
“Release by Mobile” on page 95
“Release by Test Set” on page 96
“MAHO” on page 86
“Caller ID” on page 79
“Authentication” on page 70
“Message Waiting Indicator” on page 87
“Country Code” on page 80
“FACCH SACCH Programming” on page 82
“Downbanding” on page 81
Processing Calls
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Chapter 3, Processing Calls
Authentication
Authentication
The process of testing DCCH authentication (TIA/EIA-136) through the Call
Processing Subsystem requires the user to synchronize the base station and mobile
station. This synchronization requires that the base station and the mobile station
possess two pieces of shared secret data (SSD) to confirm a valid call. The first
piece is the ESN of the mobile station and the second piece is the mobile station’s
A-key. The A-key is a secret 26-digit number stored in the mobile station’s semipermanent memory. The following sections describe how to:
•
•
•
•
•
Initialize Call Processing with Authentication
Page a Mobile Station with Authentication
Originate a Call with Authentication
Perform an SSD Update
Perform a Unique Challenge
These procedures assume you understand how to configure the Test System to
emulate a base station. (See “Configure the Test Set to Emulate a Base Station” on
page 64)
DTC AND AVC
AUTHENTICATION
SETTINGS
The authentication settings used when connected on a DTC are somewhat different than
those used on an AVC. Basically, the RANDSSD data and A_KEY information are entered
differently. Otherwise, operation is the same.
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Chapter 3, Processing Calls
Authentication
authen.pcx
authen_scrn.tif
The above settings are used when the mobile is
camped on a DCCH, or is connected on a DTC.
Figure 17
The above settings are used when the mobile is
connected on an AVC.
Authentication Screen Differences
Processing Calls
71
Chapter 3, Processing Calls
Authentication
Initialize Call Processing with Authentication
There are two methods to initialize Call Processing with authentication.
•
•
Initializing Call Processing with Authentication through registration with the Test Set.
Initializing Call Processing with Authentication without registration with the Test Set.
Initialize Call Processing with Authentication through Registration
1. On the CALL CONTROL screen, set the System Type to DCCH and verify that the
Active annunciator is lit.
2. Connect the mobile station to the Test Set as shown in Figure 5 on page 38
3. Turn on the mobile station.
4. Verify that the mobile station is camped on the control channel.
5. Select the Register field. The Register annunciator lights while the registration is in
process. If the mobile station responds properly on the reverse control channel, the
mobile station’s phone number, ESN, SCM, protocol version, and model are displayed
in the upper right-hand portion of the CALL CONTROL screen. The information in the
MS Id field is updated. The Active annunciator lights when the registration has
successfully completed.
6. Select AUTHEN on the To Screen field. The AUTHENTICATION screen is
displayed.
7. Select the A_KEY field and enter the first 20 digits of a valid A_KEY in decimal
format.
8. Position the cursor on the Off/On field and select On.
9. Select CALL CNTL from the To Screen menu. The CALL CONTROL screen is
displayed.
10. Select SSD Upd in the CC Order field. The Access annunciator light lights while the
SSD Update order is in progress. If the mobile station responds properly on the reverse
control-channel, “SSD Update Order Successful” is displayed in the upper right-hand
portion of the CALL CONTROL screen. The test set and the mobile station now share
common secret data and further call processing functions with authentication can be
tested. If the order failed, then “SSD Update Order Failed” appears on the upper righthand portion of the CALL CONTROL screen.
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Chapter 3, Processing Calls
Authentication
Initializing Call Processing with Authentication without Registration
1. On the CALL CONTROL screen, set the System Type to DCCH and verify that the
Active annunciator is lit.
2. Connect the mobile station to the Test Set as shown in Figure 5 on page 38.
3. Turn on the mobile station.
4. Verify that the mobile station is camped on the control channel.
5. Select the upper MS ID field and then select MIN2 MIN1 from the Choices: menu.
6. Select the lower MS ID field and enter the Mobile Identification Number (MIN) in
hexadecimal format.
7. Select AUTHEN from the To Screen menu. The AUTHENTICATION screen is
displayed.
8. Select the A_KEY field and enter the first 20 digits of a valid A_KEY in decimal format.
9. Select the ESN field and enter the mobile station’s electronic serial number in a hexadecimal format.
10. Position the cursor on the Off/On field and select On.
11. Select CALL CNTL from the To Screen menu. The CALL CONTROL screen is
displayed.
12. Select SSD Upd from the CC Order field. The Access annunciator lights while the
SSD Update order is in progress. If the mobile station responds properly on the reverse
control-channel, “SSD Update Order Successful” is displayed in the upper portion of
the CALL CONTROL screen. The test set and the mobile station now share common
secret data and further call processing functions with authentication can be tested. If the
order failed, then “SSD Update Order Failed” appears on the upper portion of the
CALL CONTROL screen.
Processing Calls
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Chapter 3, Processing Calls
Authentication
Page a Mobile Station with Authentication
Paging A Mobile Station That Has Registered With The Test Set
1. Register the mobile with the Test System. See “Initialize Call Processing with
Authentication through Registration” on page 72
2. Select the Page field. The Page annunciator lights while the Test Set pages the mobile
on the forward control channel. The mobile station should ring.
3. Press the SEND key on the mobile station. The Connect annunciator lights if the
mobile station properly signals the Test Set. The mobile station is now connected to the
Test Set on the assigned voice channel. The Traffic Chan Assignment fields is
updated, that is, any “-” in the left-hand fields are replaced with appropriate
information. If page with authentication was successful, “Page w/Auth successful” is
displayed in the last line of information in the upper part of the CALL CONTROL
screen. If page with authentication failed, then “Page w/Auth failed” is displayed.
Originate a Call with Authentication
1. Register the mobile with the Test System. See “Initialize Call Processing with
Authentication through Registration” on page 72
2. Dial the desired phone number on the mobile station and press the SEND key on the
mobile station’s handset. The mobile station signals the Test Set on the reverse control
channel with an origination message which includes the dialed phone number, the
mobile station’s MIN number and the mobile station’s ESN.
If the mobile station transmitted properly on the reverse control channel, the mobile
station’s phone number, ESN, decoded SCM, protocol version, and called phone number are displayed. The Test Set then reconfigures itself to the traffic channel assignments set up in the Traffic Chan Assignment section of the CALL
CONTROL screen. The Access annunciator is lit while the Test Set signals the
mobile station on the assigned voice channel. The Connect annunciator lights if the
mobile station properly signals the Test Set on the reverse voice channel.
The mobile station is now connected to the Test Set on the assigned voice channel. The
Traffic Chan Assignment fields are replaced with appropriate information. If
origination with authentication was successful, then “Origination w/Auth
successful” is displayed with the other returned mobile information in the upper
portion of the CALL CONTROL screen. If origination with authentication failed, then
“Origination w/Auth failed” is displayed.
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Chapter 3, Processing Calls
Authentication
Perform an SSD Update
There are two methods that can be used to perform an SSD Update:
•
•
SSD Update on the Control Channel
SSD Update on the Voice Channel
Performing an SSD Update on the Control Channel
1. Ensure that the Test Set has Initialized Call Processing with Authentication. See
“Initialize Call Processing with Authentication through Registration” on page
72 for information on how to register the mobile station and activate Authentication.
2. Select AUTHEN on the To Screen meun.The AUTHENTICATION screen will be
displayed.
3. Select RANDSSD field. Enter a new, valid RANDSSD value (14-digit hexadecimal).
4. Select CALL CNTL under the To Screen menu. The CALL CONTROL screen will be
displayed.
5. Select SSD Upd on the CC Order field. The Access annunciator lights while the SSD
Update order is in progress. If the mobile station responds properly on the reverse
control channel, “SSD Update Order Successful” is displayed in the upper portion of
the CALL CONTROL screen. The Test Set and the mobile station are now linked and
further call processing functions with authentication can be tested. If the order failed,
then “SSD Update Order Failed” appears in the upper portion of the CALL
CONTROL screen.
Processing Calls
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Chapter 3, Processing Calls
Authentication
Performing an SSD Update on the Voice Channel
A registered mobile can be paged to go to either a digital traffic channel (DTC) or
an analog voice channel (AVC). The type of channel assigned depends on the
Voice Channel Assignment - Type setting present when the mobile was
paged.
The AUTHENTICATION screen’s field choices are different for these two
channel types. The following procedure indicates where the difference in fields
requires different Test System settings. See “Parameters of the DTC
AUTHENTICATION Screen” on page 236 and “Parameters of the AVC
AUTHENTICATION Screen” on page 239.
1. Ensure that the Test Set has Initialized Call Processing with Authentication. See
“Initialize Call Processing with Authentication through Registration” on page
72 for information on how to register the mobile station and activate Authentication.
2. Ensure that the mobile station is on a voice channel. See “Page a Mobile Station with
Authentication” on page 74
3. Set the Display field to Data.
4. Select AUTHEN from the To Screen menu. The AUTHENTICATION screen will be
displayed.
For Authentication on a DTC
a. Select the RANDSSD field. Enter a new, valid RANDSSD value (14-digit
hexadecimal).
For Authentication on an AVC
a. Select the RANDSSD_1 field. Enter a new, valid RANDSSD_1 value
(6-digit hexadecimal).
b. Select the RANDSSD_2 field. Enter a new, valid RANDSSD_2 value
(6-digit hexadecimal).
c. Select the RANDSSD_3 field. Enter a new, valid RANDSSD3 value
(2-digit hexadecimal).
5. Select CALL CNTL under the To Screen menu. The CALL CONTROL screen will be
displayed.
6. Select SSD Upd on the VC Order field. The Access annunciator lights while the SSD
Update order is in progress. If the mobile station responds properly on the reverse
control channel, “SSD Update Order Successful” is displayed in the upper portion of
the CALL CONTROL screen. If the order failed then “SSD Update Order Failed”
appears in the upper portion of the CALL CONTROL screen.
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Chapter 3, Processing Calls
Authentication
Perform a Unique Challenge
There are two methods that can be used to perform a Unique Challenge-Response
procedure:
•
•
Unique Challenge on the Control Channel
Unique Challenge on the Voice Channel
Performing a Unique Challenge on the Control Channel
1. Ensure that the Test Set has Initialized Call Processing with Authentication. See
“Initialize Call Processing with Authentication through Registration” on page
72 for information on how to register the mobile station and activate Authentication.
2. Select AUTHEN on the To Screen menu. The AUTENTICATION will be displayed.
3. Select RAND_U field. Enter a new, valid RAND_U value (6-digit hexadecimal).
4. Select CALL CNTL under the To Screen menu. The CALL CONTROL screen will be
displayed.
5. Select Uniq Chal from the CC Order field. The Access annunciator lights while the
Unique Challenge order is in progress. If the mobile station responds properly on the
reverse control channel, “Unique Challenge Successful” is displayed in the upper
portion of the CALL CONTROL screen. If the order failed, then “Unique Challenge
Failed” appears on the upper portion of the CALL CONTROL screen.
Processing Calls
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Chapter 3, Processing Calls
Authentication
Performing a Unique Challenge on the Voice Channel
1. Ensure that the Test Set has Initialized Call Processing with Authentication. See
“Initialize Call Processing with Authentication through Registration” on page
72 for information on how to register the mobile station and activate Authentication.
2. Ensure that the mobile station is assigned an active voice channel. See “Page a Mobile
Station with Authentication” on page 74
3. Set the Display field to Data.
4. Select AUTHEN from the To Screen menu.The AUTHENTICATION screen will be
displayed.
5. Select the RAND_U field. Enter a new, valid RAND_U value (6-digit hexadecimal).
6. Select CALL CNTL from the To Screen menu. The CALL CONTROL screen will be
displayed.
7. Select Uniq Ch from the VC Order field. The Access annunciator lights while the
Unique Challenge order is in progress. If the mobile station responds properly on the
reverse control channel, “Unique Challenge Successful” is displayed in the upper
portion of the CALL CONTROL screen. If the order failed, then “Unique Challenge
Failed” appears on the upper portion of the CALL CONTROL screen.
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Chapter 3, Processing Calls
Caller ID
Caller ID
Caller ID sends a specially formatted message to the mobile under test that
identifies the phone number and name of the person calling.
The Caller ID fields are located on the DCCH CALL CONFIGURE II screen.
1.
2.
3.
4.
5.
Select CALL CFG2 from the CALL CONTROL’s To Screen.
Select Calling Num and enter the number for the phone calling the mobile.
Select Calling Name and enter the name assigned to the number calling the mobile.
Select Name Size and enter the number of characters of the Calling Name to send.
Select Pres Type and select the type of Caller ID presentation:
• Pres OK allows the Calling Name and Calling Number to be sent.
• Pres Res restricts the information.
• Not Avail tells the mobile that no information is available.
Caller ID
Settings
Processing Calls
Calconf2.tif
Figure 18
Calling Number Display
79
Chapter 3, Processing Calls
Country Code
Country Code
You can define the country code with this field. Mobile Country Code (MCC)
assignments are as described in CCITT Recommendation E.212.
Table 2
Some Mobile Country Codes
Code
Country
302
Canada
334
Mexico
310-316
United States of America
244
Finland
425
Israel
450
Korea
262
Germany
214
Spain
234-235
United Kingdom of G. Britain and N. Ireland
1. select CALL CNFG from the CALL CONTROL’s To Screen.
2. Select Country Code.
3. Enter the desired country code.
Select
Country Code
to set the
MCC.
dcch_cc.tif
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Chapter 3, Processing Calls
Downbanding
Downbanding
Downbanding is a specialized function which enables the Test Set to work in a
band just below the cellular band. By choosing the downband (Band 10) function,
the Test Set emulates a base station with channels numbered 1-600, in the
frequency band 851 - 869 MHz.
If the Test Set was in Active state when you select Band 10, the Test Set will
return to Active state on the new downbanded frequency. If the Test Set was in
Connect state, you must first Handoff to the new frequency.
1. Select CALL CFG2 from the CALL CONTROL’s To Screen.
2. Select the MS Capab field and choose Band 10 from the list of choices to turn
downbanding on.
3. Select Handoff in the CALL CONTROL screen to go to the new frequency band.
Processing Calls
Select Band 10
to turn on
downbanding.
Calconf2.tif
Figure 19
Downbanding
81
Chapter 3, Processing Calls
FACCH SACCH Programming
FACCH SACCH Programming
FACCH and SACCH are signaling channels used for transmitting control and
supervisory messages between the base and the mobile. FACCH (Fast Associated
Control CHannel) is used to transmit from the base to the mobile, and SACCH
(Slow Associated Control CHannel) is used to transmit from the mobile to the
base.
These channels are controlled in the Test Set via HP-IB programming only. Refer
to “FACCH and SACCH programming” on page 159 and Chapter 6, “HP-IB
Syntax Diagrams,” on page 169 for more information.
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Chapter 3, Processing Calls
Handoff
Handoff
See “Program Example” on page 149 for an example of the equivalent HP-IB
command.
1. Verify that the Test Set is in the Connect state (“Page” on page 91).
2. In the Traffic Chan Assignment section of the screen (or Voice Chan Assignment if you
are on an AVC), you must now set the following parameters:
Parameters for setting up a handoff
a. Enter the type of traffic channel (DTC or AVC).
b. Select the frequency band (Cellular or PCS)
c. Enter the number of the voice or traffic channel to handoff to.
d. Enter the power level that the mobile will change to.
e. Enter the slot number for the new channel if it is a DTC (or SAT if AVC).
f. Change DVCC, if desired.
3. Select Handoff from the list on the left side of the screen.
4. When the handoff is complete, the data for the new DTC or AVC will be displayed on
the screen in the left side of the Traffic or Voice Chan Assignment area.
Processing Calls
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Chapter 3, Processing Calls
Handoff
Select
These are the
parameters that the
mobile has before the
handoff.
These are the
parameters that the
mobile should have
after the handoff.
Callcont.tif
Figure 20
CALL CONTROL Screen with Handoff Data Displayed
Choosing the
proper combination
of DVCC, slot, and
channel number
The TIA/EIA-136 specification indicates that on any single RF channel, the
DVCC for all slots must be the same. For example, if your DCCH is assigned to
channel 42, and you assign the mobile to a DTC of 42, then the DVCC for both
the DCCH and the DTC must be the same.
TIA/EIA-136
Additionally, the specification requires that the DTC, if assigned on the same
channel, be assigned to a different slot than the DCCH. The Test Set always
assigns the DCCH to slots 1 and 4. If you assign your DTC to the same channel
number, and assign the DTC to slot 1 or 4, the Test Set will remain in the Access
state when you attempt to originate or handoff.
Select Active again to return the Test Set to the Active state. You must then
change settings of the DVCC, slot, or channel numbers in order to prevent this
from re-occurring.
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Chapter 3, Processing Calls
Handoff
What you should do:
•
•
Don’t use the same RF channel number for both DCCH and DTC.
If you need to use the same RF channel number for both, then verify that the
• slot number of the DTC ≠ slot number of the DCCH (1 or 4), and
• DVCC of the DTC = DVCC of the DCCH
Processing Calls
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Chapter 3, Processing Calls
MAHO
MAHO
For details about mobile assisted handoff (MAHO) see “MAHO” on page 124.
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Chapter 3, Processing Calls
Message Waiting Indicator
Message Waiting Indicator
Message Waiting Indicator (MWI) sends a command to a mobile to tell it that one
or more messages are waiting to be read or listened to. The mobile can either be
camped on a DCCH or be connected to a DTC to receive the message.
The Send MWI command sends the values of the Num Voice, Num SMS, and Num
Fax fields of the CALL CONFIGURE II screen.
Specifying the Message Waiting Indicator Contents
1.
2.
3.
4.
The mobile must either be camped on a DCCH or connected on a DTC.
Select CALL CFG2 from the CALL CONTROL screen’s To Screen menu.
Enter the number of voice messages you want indicated using the Num Voice field.
Enter the number of short message service (SMS) messages you want indicated using
the Num SMS field.
5. Enter the number of fax messages you want indicated using the Num Fax field.
6. Return to the CALL CONTROL screen (press the PREV key, or use the To Screen
menu).
Sending the MWI Message
1. If the mobile is camped on a DCCH, select the Cntl Order field and select
Send MWI.
2. If the mobile is connected on a DTC, select the Order field and select
Send MWI.
Processing Calls
The contents of these fields
are sent when a Send MWI
command is selected on the
CALL CONTROL screen.
The mobile should then
indicate that the specified
number of each type of
message is waiting to be
read or listened to.
Calconf2.tif
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Chapter 3, Processing Calls
Orders
Orders
Note that the available choices in the Order field are valid choices for the current
channel only. See “Program Example” on page 149 for an example of the program
command. (See also “Which Control Order Command Should I Use?” in the HP
8920B Option 801 Condensed Programming Reference.)
Verify that the Test Set is in the Connect state. (See “Page” on page 91)
Select the Order field on the left side of the screen.
Select the desired order from the list of Orders.
The Access annunciator will light briefly while the Test Set sends the order to the
mobile.
5. When the mobile has acknowledged the order, the screen will display the
acknowledgment.
1.
2.
3.
4.
This is a typical
acknowledgment
for the Change Power
Level 1 order.
pwrlvlch.tif
Figure 21
The new
power level
is displayed here.
CALL CONTROL Screen with an Order Response Displayed
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Chapter 3, Processing Calls
Origination
Origination
When the mobile originates a call, the Test Set automatically assigns the call to
the DTC or AVC indicated on the CALL CONTROL screen.
The number that the mobile has called is displayed.
Read about choosing the proper DVCC, slots, and channel numbers in “Choosing
the proper combination of DVCC, slot, and channel number” on page 84.
1. Verify that you have already done the following (refer to “Configure the Test Set to
Emulate a Base Station” on page 64):
• Zeroed the RF Power meter to your satisfaction.
• Selected the proper audio filter, if you want to test audio.
• Put the Test Set in Active state.
• Connected the mobile to the Test Set and turned the mobile’s power on.
2. Display the CALL CONTROL screen.
3. Select Data from the Data/Meas field.
4. Dial the desired phone number on the mobile station and press SEND.
5. The mobile station’s phone number, ESN in decimal and hexadecimal, SCM, protocol
version, and the number called will be displayed.
6. The Access annunciator will light while the Test Set signals the mobile on the assigned
voice channel.
7. The Connect annunciator will light if the mobile properly signals the Test Set on the
reverse voice channel.
Processing Calls
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Chapter 3, Processing Calls
Origination
Called number
is displayed.
While the mobile
is being signaled,
this annunciator
is lit.
When the mobile
is communicating
on the correct
voice channel
this annunciator
is lit.
originate_scr.tif
Figure 22
CALL CONTROL Screen After a Successful Origination
Choosing the
proper combination
of DVCC, slot, and
channel number
The TIA/EIA-136 specification indicates that on any single RF channel, the
DVCC for all slots must be the same. For example, if your DCCH is assigned to
channel 42, and you assign the mobile to a DTC of 42, then the DVCC for both
the DCCH and the DTC must be the same.
TIA/EIA-136
Additionally, the specification requires that the DTC, if assigned on the same
channel, be assigned to a different slot than the DCCH. The Test Set always
assigns the DCCH to slots 1 and 4. If you assign your DTC to the same channel
number, and assign the DTC to slot 1 or 4, the Test Set will remain in the Access
state when you attempt to originate or handoff.
Select Active again to return the Test Set to the Active state. You must then
change settings of the DVCC, slot, or channel numbers in order to prevent this
from re-occurring.
What you should do:
•
•
Don’t use the same RF channel number for both DCCH and DTC.
If you need to use the same RF channel number for both, then verify that the
• slot number of the DTC ≠ slot number of the DCCH (1 or 4), and
• DVCC of the DTC = DVCC of the DCCH
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Page
Page
See “Program Example” on page 149 for an example of the program command.
1. Verify that you have already done the following (refer to “Configure the Test Set to
Emulate a Base Station” on page 64):
• Zeroed the RF Power meter
• Put the Test Set in Active state
• Connected the mobile to the Test Set and turned the mobile’s power on
• Registered the mobile. (See “Registration” on page 93)
2. If you registered the mobile, the Mobile Station ID (phone number) of the mobile
appears in the MS ID field. Otherwise, you must enter this number.
3. Select Page from the list on the left side of the screen.
4. If the mobile responds, you will see the Access annunciator light briefly.
5. Press SEND on the mobile to start the conversation.
6. The Connect annunciator lights. This is the Connect state. Data to be displayed is shown
below.
While the mobile
is being paged,
this annunciator
is lit.
Processing Calls
When the mobile’s
send button has
been pressed,
this annunciator
is lit.
Con-mode.tif
Figure 23
CALL CONTROL Screen in Connect State
91
Chapter 3, Processing Calls
Page
Choosing the
proper combination
of DVCC, slot, and
channel number
TIA/EIA-136
The TIA/EIA specification indicates that on any single RF channel, the DVCC for
all slots must be the same. For example, if your DCCH is assigned to channel 42,
and you assign the mobile to a DTC of 42, then the DVCC for both the DCCH and
the DTC must be the same.
Additionally, the specification requires that the DTC, if assigned on the same
channel, be assigned to a different slot than the DCCH. The Test Set always
assigns the DCCH to slots 1 and 4. If you assign your DTC to the same channel
number, and assign the DTC to slot 1 or 4, the Test Set will remain in the Access
state when you attempt to originate or handoff.
Select Active again to return the Test Set to the Active state. You must then
change settings of the DVCC, slot, or channel numbers in order to prevent this
from re-occurring.
What you should do:
•
•
Don’t use the same RF channel number for both DCCH and DTC.
If you need to use the same RF channel number for both, then verify that the
• slot number of the DTC ≠ slot number of the DCCH (1 or 4), and
• DVCC of the DTC = DVCC of the DCCH
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Registration
Registration
See “Program Example” on page 149 for an example of the program command.
1. Verify that you have already done the following (refer to “Configure the Test Set to
Emulate a Base Station” on page 64):
• Zeroed the RF Power meter to your satisfaction.
• Selected the proper audio filter, if you want to test audio.
• Put the Test Set in Active state.
• Connected the mobile to the Test Set and turned the mobile’s power on.
2. Select Data from the Data/Meas field. (This is the default mode)
3. Select Register from the list on the left side of the screen.
4. If the registration message has been received, the Test Set will display registration data
in the upper half of the screen. See Figure 24 below.
This is typical data
received when a
mobile has
successfully registered.
Processing Calls
Registra.tif
Figure 24
CALL CONTROL Screen with Registration Data Displayed
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Chapter 3, Processing Calls
Registration
DATA DISPLAYED
WHEN ON AN ACC
The last two lines of data (Protocol Version and Model) are not displayed when the Test
Set is emulating a base station on an Analog Control Channel (ACC).
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Chapter 3, Processing Calls
Release by Mobile
Release by Mobile
1. Verify that the Test Set is in the Connect state. (See “Page” on page 91)
2. Press the END button on the mobile.
3. When the release is complete, you will see the Connect annunciator turn off, and the
Active annunciator turn on.
Processing Calls
95
Chapter 3, Processing Calls
Release by Test Set
Release by Test Set
See “Program Example” on page 149 for an example of the program command.
1. Verify that the Test Set is in the Connect state (See “Page” on page 91)
2. Select Release from the list on the left side of the screen.
3. When the release is complete, you will see the Connect annunciator turn off, and the
Active annunciator turn on.
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Chapter 3, Processing Calls
Short Message Services
Short Message Services
Short Message Services (SMS) allow a short text message to be sent to the
mobile. The mobile must either be camped on a DCCH or be connected on a DTC
to receive the message. You can send a custom message or select all or part of a
factory-defined message.
To Send a Short
Message to the
Mobile
The following procedure assumes that the Test System is configured to emulate a
base station and the mobile is cabled to the Test System. See “Configure the Test
Set to Emulate a Base Station” on page 64 if you are unsure of how to prepare the
Test System.
1.
2.
3.
4.
Set the Data/Meas field on the CALL CONTROL screen to Data.
Register the mobile on a DCCH.
If desired, select Page to connect the mobile on a traffic channel.
Select CALL CNFG from the To Screen menu to access the CALL CONFIGURE
screen.
5. Determine if you want to create a custom message or use the factory default message:
To send a custom message:
a. Set the Cust/Auto field to Cust.
b. Select the SMS Contents field and use the knob to create a message.
To send the factory default message:
97
Processing Calls
a. Set the Cust/Auto field to Auto.
6. Select the SMS Size field and enter the number of digits from the message that you
want to send. For example, you may only want to send 50 of the possible 243
characters.
7. Select CALL CNTL from the To Screen menu to return to the CALL CONTROL
screen.
8. Select the Cntl Order or Order field and choose Send SMS. The Access
annunciator lights as the Test System sends the message. If the short message was
correctly received by the mobile, the message SMS Successful is displayed.
Chapter 3, Processing Calls
Short Message Services
Use these three fields to
define the SMS message.
dcch_cc.tif
Indication that the mobile has successfully
received and decoded the SMS message.
Select Send SMS to send
the SMS message (the
name of this field is
changed to Order if the
mobile is connected on a
call).
call_cnf_sms.tif
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4
Making Measurements
This chapter discusses the difference between data and measurements. It also
explains how to read data and make measurements.
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
How to Read Data and Make Measurements
Most measurements are made directly by toggling the Data/Meas field.
Measurements are available in both the CALL CONTROL screen and the
DIGITAL MEASUREMENT screen. BER is only available in the DIGITAL
MEASUREMENT screen. MAHO is only available in the CALL CONTROL
screen. Some measurements, such as BER and Average Power, have special
conditions that must be met before the measurement is accurate. These
measurements are described in detail later in this chapter.
The Difference
Between Data and
Measurements
Data is the contents of messages transmitted or received by the mobile or Test Set.
Data usually has no units associated with it. Some data is listed below.
Data
•
•
•
phone number
ESN
SCM
Measurements are evaluations of the Device Under Test (DUT). Measurements
typically have units associated with them. Some measurements are listed below.
Measurements
•
•
•
•
•
EVM1 (%)
adjacent channel power (dB)
BER (%)
Average Power (requires HP 8920B Option 006 or PCS Interface)
TX Power
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
How to Switch
Between Data and
Meas Mode
To switch between Data and Meas mode, select the Data/Meas field. This
toggles between data and measurement modes.
on-mode.tif
Select here to toggle
between Data and
Meas modes
Figure 25
Switching Between Data and Measurements
Data Displayed
The data that is displayed when a mobile responds depends on the mobile’s status
with respect to the Test Set.
The data area is blank when the Test Set has not communicated with the mobile.
The data area contains Phone, ESN (decimal), ESN (hex), and SCM after the
mobile has actively communicated with the Test Set. It also displays Protocol
version, Model Number, Software Vintage, and Firmware Vintage of the mobile.
The data area displays the mobile’s response to a Change Power Level order.
The data area displays the hexadecimal values of the data received when an error
has occurred in the data received.
The data displays the number called when the mobile originates a call.
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
Connect State &
Mobile Test Mode
There are two methods of making measurements with the DCCH Call Processing
subsystem. Each method requires that the mobile be in a certain state, and each
method uses a different screen.
One method requires that the Test Set be in “Connect” state with the mobile. This
state uses the Test Set to act as a base station, transmitting the necessary protocol
to the mobile to allow it to get a call up for making measurements. It uses the
CALL CONTROL screen to display measurements for both DTC and AVC
signals.
The second method, “Test” mode, requires that the mobile be in the test mode as
per the TIA/EIA specification IS-137. This mode allows the mobile to transmit
without receiving protocol transmitted from the Test Set. It uses the DIGITAL
MEASUREMENT (DIG MEAS) screen to display measurements.
Connect State
Measurements
When the Test Set is in the Connect state, different groups of measurements that
can be displayed at one time: EVM1, EVM10, Adjacent Channel Power, Average
Power and MAHO. You can choose which group you want to have displayed by
selecting the field below the Data/Meas field. An overview of the different
measurement sets is shown in Figure 27 on page 103.
BER measurements can only be made when the Test Set is in the DIGITAL
MEASUREMENT screen.
Select Meas to
display
measurements
Select here to
choose between
EVM1
EVM10
Ad Ch Pwr
Avg Power
MAHO
Meas-cho.tif
Figure 26
The Measurements Display (CALL CONTROL Screen)
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
EVM1
Changes to TX Power (Avg)
when a PCS Interface is
used.
Cm-meas.tif
EVM10
Cm-evm10.tif
Adjacent
Channel
Power
Average
Power
Adjchpwr.tif
Not available when
a PCS Interface is
used.
Figure 27
Connect State Measurements Available on a Digital Traffic Channel
103
Making Measurements
scrn22.tif
Avg-pwr.tif
MAHO
Chapter 4, Making Measurements
How to Read Data and Make Measurements
Figure 28
Connect State Measurements Available on a Analog Voice Channel
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
Test Mode
Measurements
When the Test Set is in either the Connect state or the Active state, the DIGITAL
MEASUREMENT screen can be used to make measurements on a DTC. The
ANALOG MEASUREMENT screen can be used to make measurements on an
AVC. For the DIGITAL MEASUREMENT screen, the measurements that can be
made are almost the same for the Connect state measurements. The exception is
that instead of MAHO, BER can be measured in this screen.
Notice that ACCH is at the list of measurement choices. This function is only used
under HP-IB operation. See “Dig Meas” on page 230
Select here to
choose between
EVM1
EVM10
Ad Ch Power
Avg Pwr
BER
DTC WER
DCCH WER
Figure 29
The Digital Measurement Display
Making Measurements
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
Select Meas to
display
measurements
You can decide
which measurements
are displayed here
EVM
Peak EVM
Phase Err
Mag Err
Orgin Ofs
Droop
Sync Loc
Max Abs
These are the
measurements you
can choose
Figure 30
The Default Measurements Screen
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Meas-cho.tif
Chapter 4, Making Measurements
How to Read Data and Make Measurements
Making changes to In the Connect state, when Meas is selected for the first time, the default screen
the Measurements displays the EVM1 measurements. When making measurements on a digital
traffic channel, there are four default selections for the EVM1 measurements:
display
•
•
•
•
Frequency Error
TX Power
EVM
Peak EVM
Default measurement
selections
Cm-meas.tif
Figure 31
Default Measurement Selections
The Meas display for EVM 1 and EVM 10 can be configured to display different
measurements. If it has already been modified, the last modified display will
appear instead of the default. The displays for Adjacent Channel Power, Average
Power, and MAHO are fixed.
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Making Measurements
CALL PROCESSING
If you select any of the call processing functions (Active, Register, Page,
DURING MEAS MODE Handoff, Release) while in the Meas mode, the display will automatically change
back to the Data mode.
Chapter 4, Making Measurements
How to Read Data and Make Measurements
EVM1
EVM10.tif
EVM10
EVM1.tif
Adjacent
Channel
Power
ACP.tif
Average
Power
Avg-dig.tif
BER
BER.tif
DTC
WER
DCCH_WER.tif
DTC_WER.tif
DCCH
WER
Figure 32
Test Mode Measurements Available (DIGITAL MEASUREMENT Screen)
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
Other changes you
can make
There are two other types of changes you can make to the Meas display:
1. the actual measurements displayed
2. the units of each measurement displayed
Changing the measurements displayed
When Meas is selected from the Data/Meas field, a new field appears under the
Data/Meas field. The default is EVM1, and when selected, a list of choices
appears. The list of choices allows more measurements such as EVM 10, Adjacent
Channel Power, Average Power, and MAHO. EVM1 and EVM10 displays look
similar. Each of the other measurements has a display tailored to its requirements.
To change between these screens, select any measurement from the list of choices.
The EVM1 and EVM10 screens have one more level of display capability. The
two fields at the right of the screen can display any of the measurements from a
new list of choices. Select either of these fields in order to show the list of choices.
Then select the measurement to be displayed.
When you
choose either
EVM1 or EVM10,
and select here,
you can display any
measurements
listed below:
EVM
Peak EVM
Phase Err
Mag Err
Origin Ofs
Droop
Sync Loc
Max Abs
Select here to
choose between
EVM1
EVM10
Ad Ch Pwr
Avg Power
MAHO
Meas-cho.tif
Figure 33
Choosing Measurements to Display
Making Measurements
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
Changing the units displayed
The unit for a measurement is displayed to the right of the measurement name in
the data display area. To change the unit, select the unit field, and then press the
desired unit key on the front panel.
1.Select here to choose
the desired units for
display
2. Choose the new
units by pressing the
appropriate front panel
key.
Cm-meas.tif
Figure 34
Changing Measurement Display Units
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Chapter 4, Making Measurements
How to Read Data and Make Measurements
How to determine if There are several methods for using the Test Set to determine if a call has been
dropped. Any of the following situations may occur.
a call is dropped
Connect state ends
If the Connect annunciator goes off, and the Test Set returns to the Active state,
the call has dropped or ended.
DTC is not detected
If communication fails on the Reverse DTC, a message will appear at the top of
the screen: “No Reverse DTC is being detected, loss of Traffic Channel.” The Test
Set will return to Active state.
Analog connection ends
If communication fails on the AVC, a message will appear at the top of the screen:
“RF Power Loss indicates loss of Voice Channel.” The Test Set will return to
Active state. If the Display field is set to Meas, the message “Analyzer is
underdriven. Increase signal level or gain.” is displayed.
Making Measurements
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Chapter 4, Making Measurements
Adjacent Channel Power
Adjacent Channel Power
Adjacent Channel Power is measured in either Connect state or test mode.The
measurement procedure described below is for the Connect state. To measure in
the test mode, see “Test mode measurement procedure” on page 118.
Adjacent Channel Power measures the power on six adjacent channels. These are
the three nearest channels both below and above the designated channel.
Adjacent Channel Power is measured on each adjacent channel relative to the
current channel.
Adjacent Channel Power measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
A field appears below the Data/Meas field. Select this field.
Select Adj Ch Pwr from the list of choices. The Adjacent Channel Power will be
displayed. This measurement can take several seconds to complete.
adjchpwr.tif
Figure 35
Adjacent Channel Power Display
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Chapter 4, Making Measurements
Analog Parameters
Analog Parameters
Analog parameters are measured in either Connect state or test mode.The
measurement procedure described below is for the Connect mode. To measure in
the test mode, select the ANLG MEAS screen.
You can measure parameters of a TIA/EIA-136 mobile on its Analog Voice
Channel (AVC). For measurements on this analog channel, use the following
procedure.
The Test Set must be active on an AVC. If your mobile is active on a DTC, you
must first either Originate, Page, or Handoff to an AVC.
1. Make sure the Test Set is in Connect state on an AVC. See “Registration” on page 93.
2. Select Meas from the Data/Meas field.
3. The analog measurements should be displayed.
Scrn27.tif
Figure 36
Analog Measurements Display
Making Measurements
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Chapter 4, Making Measurements
Average Power
Average Power
Average Power measures absolute transmitter power on a digital traffic channel
(DTC), and requires the use of the special average power detector that is only
available with Test Set Option 006 (50µW to 10W Power Measurement Range).
Average Power measurements are limited to this power range. Refer to “Power
Measurements” on page 130 for more information.
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Chapter 4, Making Measurements
BER
BER
Loopback BER can only be measured while the Test Set is in Active mode, and
the mobile is in its test mode. This measurement is for raw BER, measured on a
traffic channel.
Each mobile manufacturer has their own method of enabling the test mode for
their phones. Those methods will not be discussed here.
BER Measurement Procedure
1.
2.
3.
4.
5.
Make sure the Test Set is in Active mode.
Select DIG MEAS from the To Screen menu.
Select the Dig Meas field to display a list of available tests.
Select BER from the list.
Enter the number of bits to be measured in the BER Bits field. (Note: the number of
bits actually read will be calculated in whole frames.)
6. Put the mobile into its test mode.
7. Select Arm.
8. After the actual number of bits has been transmitted and received, the BER should be
displayed.
If your tests require that you measure BER with a known inserted bit error rate,
use the procedure, “BER Measurement with Inserted Bit Errors” on page 116.
Making Measurements
115
Chapter 4, Making Measurements
BER
BER Measurement with Inserted Bit Errors
1. Make sure the Test Set is in Active mode.
2. Select CALL CNFG from the To Screen menu.
3. Assign a global USER key to the % BIT ERROR field as follows:
a Select the % BIT ERROR field.
b Press the SHIFT key, then k4 (ASSIGN) key.
c Press the SHIFT key again, then the k1 key.
4. Select DIG MEAS from the To Screen menu.
5. Select the Dig Meas field to display a list of available tests.
6. Select BER from the list.
7. Set the Single/Cont field to Cont (continuous).
8. Enter the number of bits to be measured in the BER Bits field. (Note: the number of
bits actually read will be calculated in whole frames.)
9. Set the Amplitude field to −50 dBm.
10. Put the mobile in loopback mode.
11. After the actual number of bits has been transmitted and received, the BER should be
displayed. The BER should be 0% at −50 dBm.
12. Press the SHIFT key then the k1 key. The Inserted DTC Bit Error Rate field
should be displayed at the top of the screen.
13. Enter a value between 0.00% and 20.00% in the Inserted DTC Bit Error Rate
field. The Loopback BER measurement should return the value that you entered in this
field. If this measurement is slightly off, increase the number of BER bits to 50,000 or
more.
How the Test Set
BER is measured in the DIGITAL MEASUREMENT screen.
measures raw BER
When the Test Set is in Active state (the Active annunciator is on), the Test Set is
emulating a base station, but is not communicating with a mobile.
The mobile must be in loopback mode. That way, the Test Set receives the data
without the data being decoded by the mobile.
Selecting Dig Meas while in Active state signals the Test Set to bring up a traffic
channel. The data is then transmitted and received over that channel.
When you enter the BER Bits number, you are selecting the desired maximum
number of bits to be transmitted. The actual number of bits transmitted is a
multiple of 260 bits. The data is transmitted in a whole number of frames. One
frame has 260 bits. For example, if you select 10000 bits to be transmitted, the
actual number of bits transmitted is 10140 (10140 bits / 260 bits per frame = 39
frames).
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Chapter 4, Making Measurements
BER
BER.tif
Figure 37
BER Display Indicating a Mobile with a High BER for the Specified Amplitude
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Chapter 4, Making Measurements
Digital Measurement Screen Tests
Digital Measurement Screen Tests
This screen allows you to test the DTC without requiring that the mobile and the
Test Set be in the Connect state. This is achieved by utilizing the Mobile Station
Test Interface as described in the TIA/EIA Interim specification IS-137.
Basically, you start with the Test Set in Active state, display the DIGITAL
MEASUREMENT screen, put your mobile into its IS-137 test mode, and test as
usual.
Test mode measurement procedure
1.
2.
3.
4.
5.
6.
DIGITAL
MEASUREMENT
SCREEN CAN ALSO
DISPLAY CONNECT
STATE
MEASUREMENTS
Make sure the Test Set is in Active mode.
Select DIG MEAS from the To Screen.
Select the Meas field. This shows the To Screen with a list of available tests.
Select your desired test from the To Screen.
Put the mobile into its test mode.
Make measurements as described in the individual measurement procedures.
This screen is the only screen in which you can make test mode measurements as per
IS-137. However, it also allows measurements that are made in Connect mode.
To use this screen while in Connect state, select the DIG MEAS screen. All of the
measurements will be available.
Note that you will not know if the call gets dropped while using this screen. You
must return to the CALL CONTROL screen to determine the status of the call.
Note that if you change the Traffic Channel number field in the DIGITAL
MEASUREMENT screen, the RF Gen Frequency field in the DUPLEX screen
changes corresponding to the new channel number. However, if you change the
RF Gen Frequency field in the DUPLEX screen, the Traffic Channel number
does not change.
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Chapter 4, Making Measurements
Digital Measurement Screen Tests
dig-meas.tif
Figure 38
DIGITAL MEASUREMENT Screen Display
Making Measurements
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Chapter 4, Making Measurements
Droop
Droop
Droop is measured in either Connect state or test mode.The measurement
procedure described below is for the Connect state. To measure in the test mode,
see “Test mode measurement procedure” on page 118.
Droop measures the difference between the level of the first symbol and the level
of the last symbol captured by the analyzer.
Droop measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
Select one of the two measurement fields that can be modified.
Select Droop from the list of choices. The droop measurement will be displayed.
Con-00dp.tif
Figure 39
Droop Display
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EVM
EVM
EVM is measured in either Connect state or test mode. The measurement
procedure described below is for the Connect state. To measure in the test mode,
see “Test mode measurement procedure” on page 118.
Error Vector Magnitude (EVM) measures the magnitude (rms) of the error vector
between the measured and the ideal signal. EVM 1 measures over one burst. EVM
10 is the first 10 symbols of 10 bursts, averaged. Peak EVM is the peak value
measured over the burst.
The procedure below describes the measurement for EVM 1. EVM 10 is listed
below EVM 1 in the list of choices.
EVM measurement procedure
1.
2.
3.
4.
5.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
EVM 1 is displayed as default. If EVM is not displayed, continue with the next step.
A field appears below the Data/Meas field. Select this field.
Select EVM 1 from the list of choices. The measurement will display.
Cm-meas.tif
EVM Display
121
Making Measurements
Figure 40
Chapter 4, Making Measurements
Frequency Error
Frequency Error
Frequency error is measured in either Connect state or test mode. The
measurement procedure described below is for the Connect mode. To measure in
the test mode, see “Test mode measurement procedure” on page 118.
TX frequency error measures the difference between the measured frequency and
the frequency that the Test Set is tuned to.
TX frequency error measurement procedure
1. Make sure the Test Set is in Connect state. See “Registration” on page 93.
2. Select Meas from the Data/Meas field.
3. Freq error is displayed.
Cm-meas.tif
Figure 41
Frequency Error Display
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Chapter 4, Making Measurements
Magnitude Error
Magnitude Error
Magnitude error is measured in either Connect state or test mode. The
measurement procedure described below is for the Connect state. To measure in
the test mode, see “Test mode measurement procedure” on page 118.
Magnitude error is the difference in amplitude at the detector point between the
measured value and the ideal value.
This is an indicator of the quality of the signals’ amplitude. For example, a high
magnitude error may indicate significant AM on the signal. This value is one of
the components of EVM.
Magnitude error measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
Select one of the two measurement fields that can be modified.
Select Mag Err from the list of choices. The Magnitude error measurement will be
displayed.
Con-phma.tif
Magnitude Error Display
123
Making Measurements
Figure 42
Chapter 4, Making Measurements
MAHO
MAHO
This measurement is available only from the CALL CONTROL screen in
Connect state.
MAHO (Mobile Assisted HandOff) is actually a measurement, not a handoff. The
reported results are used by a base station to select the channel for the handoff.
The mobile performs the measurements, and then reports the results back to the
base station. The mobile measures the RSSI of neighboring channels, as instructed
by the base station. It also measures and reports the RSSI and BER of the current
channel.
You can select the number of neighbor channels from the CALL CNFG screen.
You can also set up several parameters of the MAHO in the same screen.
Follow the procedure, “Setting up the MAHO measurement” on page 125. Then
make the measurement using the “Measuring MAHO” on page 126, or
“Measuring MAHO BER with Inserted Bit Errors” on page 127 procedure.
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Chapter 4, Making Measurements
MAHO
Setting up the MAHO measurement
1.
2.
3.
4.
Select CALL CNFG from the CALL CONTROL’s To Screen.
Set the number of neighbors (up to 6) with the field # Neighbors.
Neighbor List Channel fields appear below the # Neighbors field.
Set the channel number of each neighbor channel.
Enter the Channel
Number and Band
(cellular or PCS) for
each neighbor.
Calcnf_nbrs.tif
Figure 43
MAHO Setup
Making Measurements
125
Chapter 4, Making Measurements
MAHO
Measuring MAHO
1.
2.
3.
4.
5.
From CALL CONTROL screen, set up a call (Test Set must be in Connect mode).
Select Meas from the Data/Meas field.
Select the field that has appeared below Data/Meas.
Select MAHO from the list of choices.
The RSSI and BER of the current channel are reported, as well as the RSSI of the
designated neighbor channels.
scrn22.tif
Figure 44
MAHO Results
If your tests require that you measure MAHO BER with a known inserted bit error
rate, use the procedure, “Measuring MAHO BER with Inserted Bit Errors” on
page 127.
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Chapter 4, Making Measurements
MAHO
Measuring MAHO BER with Inserted Bit Errors
1.
2.
3.
4.
5.
6.
Select the CALL CONTROL screen.
Set the Amplitude field to −50 dBm.
Allow the mobile to camp on the DCCH.
Bring up a call on a DTC, either by paging or origination.
Select CALL CNFG from the To Screen menu.
Assign a global USER key to the % BIT ERROR field as follows:
a Select the % BIT ERROR field.
b Press the SHIFT key, then k4 (ASSIGN) key.
c Press the SHIFT key again, then the k1 key.
7. Go to the CALL CONTROL screen.
8. Select Meas from the Data/Meas field.
9. Select the field that appears below Data/Meas.
10. Select MAHO from the list of choices.
11. After the actual number of bits has been transmitted and received, the BER should be
displayed. The MAHO BER should be <0.01.
12. Press the SHIFT key then the k1 key. The Inserted DTC Bit Error Rate field
should be displayed at the top of the screen.
13. Enter a value between 0.00% and 20.00% in the Inserted DTC Bit Error Rate
field. The MAHO BER measurement results should change. For example, if you enter
2.35%, the MAHO BER should return 2.0 < 4.0. If you enter 0.10%, the result should
alternate between 0.01 < 0.1 and 0.1 < 0.5.
Enter the number of
bit errors to be
inserted.
Watch here to see the
result of the inserted
bit errors.
MAHO-ERRORS.tif
Maho Measurement with Inserted Bit Errors
127
Making Measurements
Figure 45
Chapter 4, Making Measurements
Origin Offset
Origin Offset
Origin offset is measured in either Connect state or test mode. The measurement
procedure described below is for the Connect state. To measure in the test mode,
see “Test mode measurement procedure” on page 118.
Origin offset measures the magnitude of the RF carrier leakage relative to the
magnitude of the modulated carrier at the detection point.
Origin Offset measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
Select one of the two measurement fields that can be modified.
Select Orgin Ofs from the list of choices. The Origin Offset measurement will be
displayed.
Con-00dp.tif
Figure 46
Origin Offset Display
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Chapter 4, Making Measurements
Phase Error
Phase Error
Phase error is measured in either Connect state or test mode. The measurement
procedure described below is for the Connect state. To measure in the test mode,
see “Test mode measurement procedure” on page 118.
Phase error is the difference in phase at the detection point between the received
signal and an ideal signal.
Phase Error measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
Select one of the two measurement fields that can be modified.
Select Phase Err from the list of choices. The Phase Error measurement will be
displayed.
Con-phma.tif
Figure 47
Phase Error Display
Making Measurements
129
Chapter 4, Making Measurements
Power Measurements
Power Measurements
Transmitter power is measured when the Test Set is in the Connect state (the
Connect annunciator is “lit” on the CALL CONTROL screen), or when the when
the mobile is in its Test mode. Test Mode power measurements cannot be made on
the CALL CONTROL screen, but can be made on the DIGITAL
MEASUREMENTS, ANALOG MEAS, DUPLEX TEST, and RF ANALYZER
screens.
The mobile’s transmitted RF power can be measured and displayed several
ways.The power measurement type and method you use depends on several
factors, including:
•
•
•
•
•
The presence of a PCS Interface in your Test System.
The presence of Option 006 in your Test Set.
The level of the signal you are measuring.
The availability of a “reference” signal: an RF carrier at a known signal level, and at the
same frequency of the signal to be measured.
The type of voice or traffic channel you are measuring: DTC or AVC
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Chapter 4, Making Measurements
Power Measurements
Power
Measurements
Descriptions
The following descriptions explain the types of power measurements that are
available and when to use each of them. Table 3 indicates which power
measurements are available on which screens for the different hardware
configurations.
Table 3
Test Set Screens from which Average Power and TX Power of the DTC and AVC can
be Measured
With HP 83236B
Power Measurement
Type
TX Power (Avg) and
Average Power
(Watts)
Absolute
DTC
Without HP 83236B
AVC
Screens:
Screens:
•
Call Control
•
Call Control
•
Analog Meas
•
Analog Meas
•
•
Duplex Test
RF Analyzer
•
•
Duplex Test
RF Analyzer
DTC
AVC
Screens:1
Screens:
•
•
•
•
•
•
Call Control
RF Analyzer
Duplex Test
Analog Meas
Call Control
Digital
Measurements
Screens:
TX Power
(Watts)
Absolute
TX Power
(dB)
Relative
1.
•
•
•
Analog Meas
RF Analyzer
Duplex Test
Screens:
Screens:
Screens:
Screens:
•
•
•
•
•
Digital
Measurements
Digital
Measurements
Call Control
Digital
Measurements
Digital
Measurements
Average power measurements on a DTC require Test Set Option 006 if a PCS Interface is not used.
TX Power [dB]
This is a relative measurement; measured in dB (not dBm or W). This is the only
DTC power measurement available if your Test Set is not equipped with Option
006 and you are not using a PCS Interface. This is one of the measurements
displayed when EVM1 or EVM10 is measured on the CALL CONTROL or
DIGITAL MEASUREMENTS screens.
Making Measurements
131
Chapter 4, Making Measurements
Power Measurements
CALIBRATING THE
RELATIVE
TX POWER
MEASUREMENT
Two calibration routines must be run when the Cellular Adapter is first connected to the
Test Set and any time the Cellular Adapter is serviced and re-attached. One of these routines specifically calibrates the relative TX Power measurement, and must be run to ensure
measurement accuracy. See “I/Q Modulator and Relative TX Power Calibration” on
page 287.
The main benefit of using this measurement is its ability to measure very low level
signals; typically <-80 dBm (10 pico Watts). Also, unlike the Average Power
measurement, relative TX Power measurement can be measured through the ANT
IN port to measure signals below 50mW (do not exceed 200mW on the ANT IN
port). The Input Port is selected on the RF ANALYZER screen.
Power is measured directly by the Cellular Adapter’s Digital Signal Processing
(DSP) circuitry. Because it is a relative power measurement, the user must first
provide a reference signal at a known level to establish a power measurement
reference point before testing the mobile. Subsequent measurements indicate the
power level relative to the reference signal’s power. For example; if you used a
0dBm signal for the reference, a signal level from the mobile of −80dBm will be
displayed as a TX Power of −80dB.
Setting a
Measurement
Reference
A measurement reference is typically established, and TX Power is measured,
using the following steps.
1. Connect a reference TDMA signal to the Test System; preferably at a level of 0 dBm.
2. Go to the DIGITAL MEASUREMENTS screen and enter the channel number for the
reference signal in the Traffic Chan field. Refer to Figure 48 on page 133.
3. Position the cursor immediately in front of the dB units for the TX Power
measurement.
4. Press SHIFT, REF SET, ENTER on the Test Set. The value should change to
0.000000 dB for an instant, and then indicate a changing level of <0.1dB.
5. Remove the reference signal and connect the mobile.I
6. Set the mobile to transmit by either establishing a call using the CALL CONTROL
screen or by putting the mobile in its test mode.
7. Read the mobile’s TX Power.
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Chapter 4, Making Measurements
Power Measurements
Step 3 -With a signal
of a known
amplitude and
frequency applied,
position the cursor
in front of the dB
units.
Step 2 - Enter the
channel number of the
TDMA reference signal.
Note: In this case,
the 0dBm signal we
are using as a
reference indicated a
level of 0.91 dB.
txpower_db_digmeas.tif
Step 4 - Press SHIFT, REF SET, ENTER
to set the present signal level to be the
measurement reference level. All
subsequent power measurements are
relative to the indicated value.
Notice that the Test Set now indicates that
the displayed measurement is referenced
to some other level.
The 0.004dB reading in this example
indicates that the reference signal’s level
has changed very slightly since the
reference level was first set.
txpower_db_ref.tif
Figure 48
Setting a Relative TX Power measurement reference.
Making Measurements
133
Chapter 4, Making Measurements
Power Measurements
Average Power [W]
Average Power is measured using a special detector in Test Sets with Option 006.
This detector provides a measurement range of 50mW to 10W. This is the only
way to measure absolute power on a DTC if you are not using a PCS Interface. If
you are using a PCS Interface, this measurement is disabled. The RF IN/OUT port
of the Test Set must be used for this measurement.
Average Power is the average envelope power over a burst. Because the
transmitter is only transmitting during two of the six timeslots in a TDMA frame
(slots 1 and 4 in Figure 49), the power measurement must be synchronized to the
transmitted bursts. If it was not synchronized, the measurement would include the
transmitter’s off time during the four “dead” timeslots, greatly reducing the
accuracy of the measurement. This is the only way to measure the absolute (rms)
power of a TDMA signal without using a PCS Interface. This measurement is not
used if the HP 83236B PCS Interface is used.
Once a burst is detected, the cellular adapter starts measuring power when the
sixth symbol is received. The measurement continues for at least 140 consecutive
symbols; never to measure beyond the 162nd symbol in that burst (when the next
timeslot is encountered). The result is a true average of the 140 (or more) received
symbols. (This measurement is defined in TIA/EIA standard IS-137 as Digital RF
Power Output.)
Slot 2
Slot 1
Slot 6
Slot 5
Slot 4
Slot 3
Slot 2
Power
Slot 1
Symbol 6
Power is measured
during this time.
Slot 1 or 4
1 Complete Frame
Time (TDMA Timeslots)
Figure 49
Next Frame
Measuring Average Power
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Symbol 162
Slot 2 or 5
Chapter 4, Making Measurements
Power Measurements
Zeroing the
Average Power
Meter
Before establishing a call, zero the average power meter by selecting the Power
Meter - Zero field on the DCCH CALL CONFIGURE screen. (See “Zeroing the
Understanding the
Max Abs
Measurement
Max Abs is a measure of the power into the analog to digital converter (ADC) at
the input of the Cellular Adapter. It is displayed as an aid to troubleshoot
measurement problems. If this level drops below −20dB, or goes above −1dB, the
level into the ADC is too low or too high and will cause inaccurate measurements.
Average Power Meter” on page 35). Once zeroed, measurement accuracy is
typically ±5% or 0.2dB.
Max Abs is affected by the transmitter’s power into the Test Set and by the Pwr
Gain setting. If you select Pwr Gain - Auto, then Max Abs will automatically
remain within the proper limits if the transmitted level is high enough (but not too
high). Auto is the recommended setting. If you select Pwr Gain - Hold, then
you must adjust the gain by selecting a setting from the Choices menu. Max Abs
must remain between −1 and −20 dB.
Measuring Average 1. Access the CALL CONTROL screen.
Power on an Active 2. Establish a call between the mobile and the Test System on a digital traffic channel.
When established, the Connect indicator on the CALL CONTROL screen is ‘‘lit’’
Traffic Channel
and the Traffic Chan Assignment - Type: indicates DTC. See
“Registration” on page 93.
3. Select Meas from the Data/Meas field.
4. Select Avg Pwr from the Choices menu.
5. The average power is displayed.
Indicates the
type of traffic
channel being
received
Figure 50
Average Power Measured on the CALL CONTROL Screen
135
Making Measurements
Avg-pwr.tif
Chapter 4, Making Measurements
Power Measurements
Measuring Average
Power with the
Mobile in Test
Mode
Select
Avg Power
Leave this set
to Auto
avg_pwr_std.tif
Figure 51
Average Power Measured on the DIGITAL MEASUREMENTS Screen with PCS
Interface Disabled
Select
Avg Power.
AVG_PWR.tif
Figure 52
Average Power Measured on the DIGITAL MEASUREMENTS Screen with PCS
Interface Enabled
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Chapter 4, Making Measurements
Power Measurements
TX Power (Avg) [W]
This is an rms power measurement. It is only available when an HP 83236B PCS Interface
is used. This measurement is similar to the Average Power measurement. In fact, the
Average Power measurement is disabled if the PCS Interface is used because the interface
can measure power for both Cellular and PCS signals. Accuracy is typically ±5% or 0.2
dB.
TX Power [W]
This is the absolute (rms) power on an AVC. It is used when a PCS Interface is not
attached. The detected signal is converted to an envelope signal voltage (power) and is
digitized. The resulting power level is calculated using the following formula:
peak power − 2.95 dB = rms power
The RF IN/OUT port of the Test Set must be used for this measurement.
Making Measurements
137
Chapter 4, Making Measurements
Sync Location
Sync Location
Sync location is measured in either Connect state or test mode.The measurement
procedure described below is for the Connect state. To measure in the test mode,
see “Test mode measurement procedure” on page 118.
Sync location measures the time in number of bit periods from the trigger to the
beginning of the first sync word detected.
Sync location measurement procedure
1.
2.
3.
4.
Make sure the Test Set is in Connect state. See “Registration” on page 93.
Select Meas from the Data/Meas field.
Select one of the two measurement fields that can be modified.
Select Sync Loc from the list of choices. The Sync location measurement will be
displayed.
Sync-loc.tif
Figure 53
Sync Location Display
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Chapter 4, Making Measurements
TX Power
TX Power
Three types of Transmitter Power measurements are available:
•
•
•
TX Power [W] - to measure the absolute power of an Analog Voice Channel (AVC).
TX Power [dB] - To measure the relative power of a Digital Traffic Channel (DTC).
This provides a way to measure transmitter power on a DTC when your Test Set does
not have Option 006 (50µW to 10W Average Power Measurements) or a PCS Interface.
TX Power (Avg) [W] - To measure the absolute power of a DTC or AVC using
the PCS Interface.
See “Power Measurements” on page 130 for information on making power
measurements.
Making Measurements
139
Chapter 4, Making Measurements
TX Power
Measuring
To measure absolute TX Power when a mobile is in the Connect state, use the
Absolute TX Power following measurement procedure. To measure absolute TX Power when the
mobile is in the Test mode, select ANLG MEAS (from the To Screen list) to
on an AVC
display the ANALOG MEAS screen.
TX Power measurement procedure
1.
Establish a call between the mobile and the Test System on an analog voice channel.
When established, the Connect indicator on the CALL CONTROL screen is ‘lit’ and
the Traffic Chan Assignment - Type: indicates AVC. See “Registration” on
page 93.
2. Select Meas from the Data/Meas field.
3. Absolute TX Power is displayed, along with other relevant analog measurements.
Read
Absolute
TX Power
Confirms
AVC
To go to the
ANALOG MEAS
screen.
Figure 54
Measuring TX Power on an Analog Voice Channel (AVC)
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Abstxpwr.tif
Chapter 4, Making Measurements
TX Power
Measuring Relative The following measurement procedure is for mobiles in the Connect state. Use the
DIGITAL MEASUREMNTS screen to make measurements with the mobile
TX Power on a
transmitting in the test mode (see “Test mode measurement procedure” on page
DTC
118).
1. Access the CALL CONTROL screen.
2. Establish a call between the mobile and the Test System on a digital traffic channel.
When established, the Connect indicator on the CALL CONTROL screen is ‘lit’ and
the Traffic Chan Assignment - Type: indicates DTC. See “Registration” on
page 93.
3. Select MEAS from the Data/Meas field.
4. Select EVM 1 from the Choices menu.
5. Relative TX Power is displayed, along with relevant digital modulation measurements.
Read
Relative
TX Power
Confirms
DTC
To go to the DIGITAL
MEASUREMENTS
screen.
Figure 55
Reltxpwr.tif
Measuring TX Power on a Digital Traffic Channel (DTC)
Making Measurements
141
Chapter 4, Making Measurements
TX Power
Measuring Average To measure average TX Power when a mobile is in the Connect state and a PCS
Power on an AVC Interface is configured and enabled, use the following measurement procedure.
or DTC with the
PCS Interface
Average TX Power with PCS Interface measurement procedure
1. Set up the PCS Interface as directed in the sections under “About the Cellular
Adapter” on page 32.
2. Establish a call between the mobile and the Test System on a digital traffic channel
(DTC) (or an analog voice channel (AVC) if you prefer). When established, the
Connect indicator on the CALL CONTROL screen is ‘lit’ and the Traffic Chan
Assignment - Type: indicates DTC (or AVC). See “Registration” on page 93.
3. Select Meas from the Data/Meas field.
4. Average TX Power is displayed, along with other relevant analog measurements.
Read
Average
TX Power
Confirms
DTC
To go to the
PCS_POWER.tif
ANALOG MEAS
screen.
Figure 56
Measuring TX Power on a Digital Traffic Channel (DTC) with a PCS Interface
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Chapter 4, Making Measurements
WER (DTC or DCCH)
WER (DTC or DCCH)
DTC WER and DCCH WER can only be measured while the Test Set is in Active
mode, and the mobile is in its test mode. The DTC WER measurement is for raw
word error rate, measured on a traffic channel. DCCH WER measures word error
rate on the control channel.
Each mobile manufacturer has their own method of enabling the test mode for
their phones. Those methods will not be discussed here.
DTC WER Measurement Procedure
1. Make sure the Test Set is in Active mode.
2. Select DIG MEAS from the To Screen menu.
3. Set Amplitude to −50 dBm.
4. Select the Dig Meas field to display a list of available tests.
5. Select DTC WER from the list.
6. Enter the number of word to be measured in the WER Words field.
7. Put the mobile into loopback mode.
8. Select the WER Type field and choose Speech, FACCH, or SACCH data.
9. Select Arm.
10. After the actual number of words has been transmitted and received, the BER should
be displayed. the measurements should all read 0.000% at −50 dBm.
11. Gradually reduce the signal’s amplitude. You should notice and increase in WER.
12. Raise the signal level back to −50 dBm.
13. Go to the DCCH CALL CONFIGURE screen and enter a number in the % BIT
ERROR field. This will insert bit errors onto the DTC. Note the response in the WER
measurement results.
Making Measurements
143
Chapter 4, Making Measurements
WER (DTC or DCCH)
How the Test Set
measures WER
WER is measured in the DIGITAL MEASUREMENT screen.
When the Test Set is in Active state (the Active annunciator is on), the Test Set is
emulating a base station, but is not communicating with a mobile.
Selecting Dig Meas while in Active state signals the Test Set to bring up a traffic
channel. The data is then transmitted and received over that channel.
The mobile must be in loopback mode. For WER, the mobile demodulates the
data, convolutionally decodes it, corrects errors, and then re-transmits the data.
(This is different from loopback BER, where the mobile demodulates the data
then immediately retransmits it without performing any error correction.)
A word in TDMA is anything that has a CRC calculated on it, such as a speech
block, a FACCH, or a SACCH message. Speech and FACCH words are both
interleaved over two timeslots. SACCH words are spread over 12 timeslots. The
Test Set assembles blocks of data and computes the CRC which is sent to the
mobile. The mobile loops the data back to the Test Set after convolutional
decoding and error correction. The Test Set checks to see if the received CRC
matches the CRC that was sent. If the CRCs do not match, the whole word is
considered an error.
DCCH WER is measured differently than DTC WER. For DCCH WER, the
mobile reads the DCCH bursts, including the CRC and the shared channel
feedback (SCF) in the DCCH data stream. Then, instead of looping back all the
DCCH data, the mobile sends back the CRC and SCF to the Test Set. The Test Set
checks to see if the CRC and SCF match what was sent.
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Chapter 4, Making Measurements
WER (DTC or DCCH)
DTC_WER.tif
Figure 57
DTC WER Display
Figure 58
DCCH WER Display
145
Making Measurements
DCCH_WER.tif
Chapter 4, Making Measurements
WER (DTC or DCCH)
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Programming the Cellular
Adapter
5
Programming the Cellular Adapter
This chapter describes special features of the Cellular Adapter that are only
available through programming.
147
Chapter 5, Programming the Cellular Adapter
Programming the Cellular Adapter
Programming the Cellular Adapter
This Cellular Adapter cannot be used without a Test Set. Programming the Test
Set is described in the HP 8920B Test Set’s Programmer’s Guide Use the Test
Set’s programming information, along with information here and in Chapter 6,
“HP-IB Syntax Diagrams,” on page 169 to program the functions you need for
DAMPS and DCCH.
In order to program many of the analog measurements, you will need to refer to
the HP 8920B Test Set’s Programmer’s Guide.
Programming in
Any time you access the Call Control screen and its supported screens you are
the Call Processing operating in the Call Processing Subsystem. Remote operation in this subsystem
requires certain programming structures to help eliminate operating errors.
Subsystem
For example, it is very important to use the subsystem’s status registers to monitor
the call status annunciators to control program flow. Failure to use correct
programming procedures could result in instrument lockup.
Therefore, it is important that you read and understand the information in the HP
8920B Test Set’s Programmer’s Guide entitled “Programming the Call Processing
Subsystem”.
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Program Example
This section contains a program example using many of the most frequently
needed commands. Excerpts from this program have been used to make more
topic-specific program examples as used in Chapter 3, “Processing Calls,” on
page 61.
HP BASIC Program Example
100
! re-save dcch_example
101
! This program shows how to perform some of the basic
102
! tasks of call processing for DCCH.
103
! System type is DCCH
104
COM Testsys
105
CLEAR SCREEN
106
Testsys=714
107
! Reset the Test System
108
OUTPUT Testsys;”*RST;*OPC?”
109
ENTER Testsys;Done
110
! Display the Call Processing Screens and select system
111
! type DCCH
112
OUTPUT Testsys;”DISP ACNT” !Displays analog call screen
113
OUTPUT Testsys;”CPR:CSYS ‘DCCH’” !System type DCCH
114
! Make sure Test System is now in Active state
115
REPEAT
116
WAIT 3!Give Test System time to service other processes
117
OUTPUT Testsys;”STAT:CALLP:COND?”
118
ENTER Testsys;Active_status
119
UNTIL Active_status=1
120
PRINT “Test System is now emulating a DCCH base station.”
121
PRINT “Active annunciator should be lit.”
122
! Change control channel number to 333
123
OUTPUT Testsys;”CPR:DCCH:CCH 333”
124
! Make sure Test System is again in Active state
125
REPEAT
126
WAIT 2 !Give Test System time to service other processes
149
Programming the Cellular
Adapter
Chapter 5, Programming the Cellular Adapter
Program Example
Chapter 5, Programming the Cellular Adapter
Program Example
127
OUTPUT Testsys;”STAT:CALLP:COND?”
128
ENTER Testsys;Active_status
129
UNTIL Active_status=1
130 PRINT “Test System is now emulating a DCCH base station, channel 333.”
131
PRINT “Active annunciator should be lit.”
132
! Zero power meter
133
PRINT “Disconnect cables from RF In/Out port.”
134
INPUT “Press ENTER when phone is disconnected.”,A$
135
OUTPUT Testsys;”CPR:DCCH:ZPOW” !zero the power meter
136
PRINT “Re-connect phone now.”
137
PRINT “Turn on phone now.”
138
INPUT “Press ENTER when phone has camped on a control channel.”,A$
139
! Register phone. Check success by monitoring Register annunciator
140
! turning off.
141
OUTPUT Testsys;”STAT:CALLP:PTR 0” !Don’t latch positive transitions
142
OUTPUT Testsys;”STAT:CALLP:NTR 2” !Latch the Register annunciator
143
! turning off.
144
OUTPUT Testsys;”*CLS” !Clear Status Event Registers
145
OUTPUT Testsys;”CPR:DCCH:REGister” !The Register command
146
REPEAT
147
OUTPUT Testsys;”*ESR?;:STAT:CALLP:EVENT?” !Check for errors or
148
! Registration success
149
ENTER Testsys;Esr,Register
150
WAIT 2 !Give Test System time to service other processes
151
UNTIL Register OR Esr
152
IF Esr THEN
153
PRINT “Error with Registration”
154
STOP
155
ELSE !Registration should have completed
156
OUTPUT Testsys;”CPR:PNUM?” !Get the phone number of the mobile
157
ENTER Testsys;Phone_num
158
PRINT “Registration was successful!”
159
PRINT “Phone number is “;Phone_num
160
END IF
161
! End Registration
162
! Page Mobile
163
PRINT “When the phone rings, press SEND”
150
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Programming the Cellular
Adapter
Chapter 5, Programming the Cellular Adapter
Program Example
164
OUTPUT Testsys;”STAT:CALLP:PTR 32” !Latch Connect annunciator
165
! positive transition.
166
OUTPUT Testsys;”STAT:CALLP:NTR 0” !Don’t latch negative transitions
167
OUTPUT Testsys;”*CLS” !Clears all Event Status Registers
168
OUTPUT Testsys;”CPR:DCCH:PAGE” !The Page command
169
REPEAT !Wait for the Test System and the mobile to connect
170
OUTPUT Testsys;”*ESR?;:STAT:CALLP:EVENT?”
171
ENTER Testsys;Esr,Connect
172
WAIT 2 !Give Testsys time to service other processes
173
UNTIL Connect OR Esr !Until mobile connects or an error occurs
174
IF Esr THEN
175
PRINT “Error with Page”
176
STOP
177
END IF
178
PRINT “Page was successful”
179
! End Page
180
! Since we used the DCCH default settings, we know that we are
181
! on a DTC. Now we will query for some of the present parameters.
182
OUTPUT Testsys;”CPR:DCCH:CONN:TYPE?” !Queries for channel type
183
184
185
ENTER Testsys;Chan_type$ ! read the channel type (will be DTC)
PRINT “The channel type is “;Chan_type$
OUTPUT Testsys;”CPR:DCCH:CONN:SLOT?” !Queries for slot number
186
ENTER Testsys;Slot_num$ ! read the slot number
187
PRINT “The slot number is “;Slot_num$
188
OUTPUT Testsys;”CPR:DCCH:CONN:POW?” !Queries for power level
189
ENTER Testsys;Pow_level$ ! read the power level
190
PRINT “The power level is “;Pow_level$
191
OUTPUT Testsys;”CPR:DCCH:CONN:DVCC?” !Queries for DVCC value
192
ENTER Testsys;DVCC_val$ ! read the DVCC value
193
PRINT “The DVCC is “;DVCC_val$
194
! End DTC parameter query
195
! Change DTC Power Level (send an order)
196
OUTPUT Testsys;”CPR:DCCH:DTCH:DMAC?” !Queries for power level
197
ENTER Testsys;DMAC_lvl ! read the power level
198
PRINT “The power level is “;DMAC_lvl
199
OUTPUT Testsys;”CPR:DCCH:DTCH:ORD ‘CHNG PL 8’” !Change to level 8
200
WAIT 2 !Give Testsys time to service other processes
151
Chapter 5, Programming the Cellular Adapter
Program Example
201
OUTPUT Testsys;”CPR:DCCH:DTCH:DMAC?” !Confirm new power level
202
ENTER Testsys;DMAC_lvl ! read the power level
203
PRINT “The new power level is “;DMAC_lvl
204
! End DTC power level change
205
! Make measurements on the DTC
206
OUTPUT Testsys;”CPR:DCCH:DMODE ‘MEAS’” !Change to Measure mode
207
WAIT 2 !Give Testsys time to service other processes
208
OUTPUT Testsys;”MEAS:DCCH:EVMM:FERR?” !Measure frequency error
209
ENTER Testsys;Freq_err ! read the frequency error
210
PRINT “The frequency error is “;Freq_err
211
OUTPUT Testsys;”MEAS:DCCH:EVMM:TPOW?” !Measure TX power
212
ENTER Testsys;TX_power ! read the TX power
213
214
PRINT “The TX power is “;TX_power
OUTPUT Testsys;”MEAS:DCCH:EVMM:DROop?” !Measure droop
215
ENTER Testsys;droop ! read droop
216
PRINT “The droop is “;droop
217
! Change the measurement type to Average Power
218
OUTPUT Testsys;”CPR:DCCH:MTYPe ‘AVG POWER’” !Measurement type
219
OUTPUT Testsys;”MEAS:DCCH:APOW?” ! Measure Average Power
220
WAIT 2 !Give Testsys time to service other processes
221
ENTER Testsys;Avg_power ! read Average Power
222
PRINT “The Average Power is “;Avg_power
223
! End Average Power measurement
224
! End measurements on the DTC
225
! Set up AVC parameters in preparation for a handoff
226
OUTPUT Testsys;”CPR:DCCH:VTYPE ‘AVC’” !Set channel type to AVC
227
OUTPUT Testsys;”CPR:DCCH:AVCH:VCH 995” !Set voice channel to 995
228
OUTPUT Testsys;”CPR:DCCH:AVCH:VMAC 4” !Set power level to 4
229
OUTPUT Testsys;”CPR:DCCH:AVCH:SAT ‘6030Hz’” !Set the SAT
230
! Handoff to the AVC
231
OUTPUT Testsys;”STAT:CALLP:PTR 32” !Latch Connect annunciator
232
! positive transition
233 OUTPUT Testsys;”STAT:CALLP:NTR 0” !don’t latch negative transitions
234
OUTPUT Testsys;”*CLS” !Clear Event Status Registers
235
OUTPUT Testsys;”CPR:DCCH:HAND” !Handoff command
236
REPEAT !Wait until handoff has occurred and Test System is again in
237
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! Connect state.
238
OUTPUT Testsys;”*ESR?;:STAT:CALLP:EVENT?” !Check for Connect/
error
239
ENTER Testsys;Esr,Connect
240
WAIT 5 ! Give Testsys time to service other processes
241
UNTIL Connect or Esr !Until mobile has reconnected or an error
242
IF Esr THEN
243
PRINT “Error with Handoff”
244
STOP
245
END IF
246
PRINT “Handoff was successful.”
247
! Release call
248
PRINT “Releasing call...”
249
OUTPUT Testsys;”CPR:DCCH:REL” !Release command
250
! Make sure Test System is again in Active state
251
REPEAT
252
WAIT 2
253
OUTPUT Testsys;”STAT:CALLP:COND?”
254
ENTER Testsys;Active_status
255
UNTIL Active_status=1
256
PRINT “Call has been released.”
257
PRINT “Active annunciator should be lit.”
258
PRINT “Program has finished.”
259
END
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Chapter 5, Programming the Cellular Adapter
Program Example
Chapter 5, Programming the Cellular Adapter
Displaying the DCCH screens
Displaying the DCCH screens
Table 4 lists the command mnemonics for displaying the screens available in the
Cellular Adapter. For other screens, refer to the HP 8920 series Programmer’s
Guide.
Note that to display the DCCH CALL CONTROL screen, you must display the
CALL CONTROL screen (ACNT) and change system type to DCCH.
Table 4
DCCH Call Processing screen mnemonics
Screen
Mnemonic
Call Control
ACNT
Call Configure
DCON
Analog Measurement
CME
Digital Measurement
DME
Spectrum Analyzer
SAN
Sample syntax to display each DCCH Call Processing screen
! Display the Call Control screen
OUTPUT 714;”DISP ACNT”
! Change the system type to DCCH
OUTPUT 714;”CPR:CSYS ‘DCCH’”
! Display the Call Configure screen
OUTPUT 714;”DISP DCON”
! Display the Analog Measurement screen
OUTPUT 714;”DISP CME”
! Display the Digital Measurement screen
OUTPUT 714;”DISP DME”
! Display the Spectrum Analyzer screen
OUTPUT 714;”DISP SAN”
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Status Registers for DCCH Call Processing
The status registers which can be queried for DCCH are the same as for AMPS.
Refer to the HP 8920 Test Set’s Programmer’s Guide for more information.
The Status Register Group for Call Processing consists of four 16-bit registers:
•
•
•
•
The Condition Register indicates the status of specific Test System conditions, such as
whether it has successfully connected to the mobile. Table 5 lists the conditions and
values associated with the Call Control annunciators. (See “Example program for the
Condition Register” on page 156)
Transition Filters are used to specify when changes to the Condition Register get passed
to the Event Register (always, never, or by a high-to-low or low-to-high transition).
The Event Register indicates what events have occurred since it was last cleared; it is a
read-only register to track events.
The Enable Register specifies what conditions in the Event register are allowed to be
passed to the Status Byte.
There is also a Summary Message for this Status Register Group.
260
Table 5
Partial Description of Condition Register Bit assignments (Bits 0-5 only)
Bit
Number
Binary
Weighting
5
32
Connect state
bit state mirrors the condition of the annunciator on the display
(1=ON, 0=OFF)
4
16
Access state
bit state mirrors the condition of the annunciator on the display
(1=ON, 0=OFF)
3
8
Page state
bit state mirrors the condition of the annunciator on the display
(1=ON, 0=OFF)
2
4
unused
1
2
Register state
bit state mirrors the condition of the annunciator on the display
(1=ON, 0=OFF)
0
1
Active state
bit state mirrors the condition of the annunciator on the display
(1=ON, 0=OFF)
Condition
Comment
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Chapter 5, Programming the Cellular Adapter
Status Registers for DCCH Call Processing
Chapter 5, Programming the Cellular Adapter
Status Registers for DCCH Call Processing
Example program for the Condition Register
100
! re-save condreg_example
101
! This program shows how to read the
102
! Condition Register.
103
COM Testsys
104
CLEAR SCREEN
105
Testsys=714
106
! Reset the Test System
107
OUTPUT Testsys;”*RST;*OPC?”
108
ENTER Testsys;Done
109
! Display the Call Control screen
110
OUTPUT Testsys;”DISP ACNT”
111
! Change the system type to DCCH
112
OUTPUT Testsys;”CPR:CSYS ‘DCCH’”
113
PRINT “Wait for the Test System to be in Active state”
114
PRINT “Wait for the phone to camp”
115
INPUT “Press ENTER when Active annunciator is lit.”,A$
116
! Query the Condition Register
117
OUTPUT Testsys;”STAT:CALLP:COND?”
118
! Read and display the register’s value
119
ENTER Testsys;Register_value
120
PRINT “Value of Condition Register during Active”
121
PRINT “state should be 1.“
122
PRINT “Value of Condition Register is “;Register_value
123
! Page a call
124
OUTPUT Testsys;”CPR:DCCH:PAGE”
125
! Press SEND on the mobile when it rings
126
! Wait for the call to connect
127
PRINT “Wait for the phone to ring, then press the SEND”
128
PRINT “button on the phone.”
129
INPUT “Press ENTER when phone has connected.”,A$
130
! Query the Condition Register
131
PRINT “Value of Condition Register during Connect”
132
PRINT “state should be 32.“
133
OUTPUT Testsys;”STAT:CALLP:COND?”
134
! Read and display the register’s value
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135
136
ENTER Testsys;Register_value
PRINT “Value of the Condition Register is “;Register_value
137
PRINT “Program is finished.”
138
END
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Chapter 5, Programming the Cellular Adapter
Status Registers for DCCH Call Processing
Chapter 5, Programming the Cellular Adapter
Triggering and Remote to Local mode transitions
Triggering and Remote to Local mode transitions
The Test Set switches from Local to Remote mode upon receipt of the Remote
message. No instrument settings are changed, but triggering is set to its last state in
Remote mode.
When the Test Set switches from Remote to Local mode, all currently active
measurements are flagged as invalid, and in some cases, triggers are restarted.
For more information, see Triggering Measurements in the HP 8920 Test Set’s
Programmer’s Guide.
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FACCH and SACCH programming
This function can only be controlled through HP-IB. FACCH and SACCH have
no equivalent display fields.
FACCH and
The Reverse Digital Traffic Channel (RDTC) is a digital channel from the mobile
SACCH description to the base. It contains information about topics like connection, measurement
orders, channel quality, DTMF, status, and SSD updates.
The RDTC has two separate control channels: Fast Associated Control Channel
(FACCH), and Slow Associated Control Channel (SACCH). These are the two
channels which can be programmed with messages.
The FACCH replaces the user information block whenever it is to be transmitted.
The FACCH can consist of more than one word. User information blocks can be
interspersed with the FACCH words.
The SACCH uses 12 coded bits per TDMA burst. This data stream is continuous.
Programming
commands for
FACCH and
SACCH
HP-IB commands for the FACCH and SACCH follow.
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Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
CPOVerride:ENABle
CPOVerride:DISable
Call Processing Override Action.
Enable this command when you want to control how much Layer 2 and Layer 3
DTC call processing occurs. When enabled, the only Layer 2 processing
performed is calculation of the CRC of the Layer 2 word and filtering of Layer 2
SACCH frames. Layer 3 call processing is completely turned off.
Syntax
CALLP:DCCH:FSACch:CPOVerride:ENABle
CALLP:DCCH:FSACch:CPOVerride:DISable
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FALog:ENABle
FALog:DISable
DTC FACCH Word Log Action
Enable this command to send any received reverse FACCH Word message over
HP-IB. The command RFSWord sends this information.
Syntax
CALLP:DCCH:FSACch:FALog:ENABle
CALLP:DCCH:FSACch:FALog:DISable
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Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
SALog:ENABle
SALog:DISable
DTC SACCH Word Log Action
Enable this command to send any received non-NULL reverse SACCH Word
message over HP-IB. The command RFSWord sends this information.
Syntax
CALLP:DCCH:FSACch:SALog:ENABle
CALLP:DCCH:FSACch:SALog:DISable
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BCOunt <Block Count>
BCOunt:UPDate
BCOunt?
DTC Block Count Field
This sets the internal block counter. This field must be updated before being
queried. Maximum count is 2 32 – 1 , after which the counter rolls over to zero. The
block counter is automatically updated every 20 ms.
Syntax
CALLP:DCCH:FSACch:BCOunt <Block Count>
CALLP:DCCH:FSACch:BCOunt:UPDate
CALLP:DCCH:FSACch:BCOunt?
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Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
PERiod <Period>
PERiod:UPDate
PERiod?
DTC Period Field
If the period is set to a non-zero value, then the scheduled words will be
transmitted starting at zero and repeating every “Period” blocks. Words scheduled
in blocks greater than the Period will not be sent. If the period is zero, then no
words are sent.
Syntax
CALLP:DCCH:FSACch:PERiod <Period>
CALLP:DCCH:FSACch:PERiod:UPDate
CALLP:DCCH:FSACch:PERiod?
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FACCh:FFSWord <Forward Block>, <Default Flag Command string>, <Word
Command string>
SACCh:FFSWord <Forward Block>, <Default Flag Command string>, <Word
Command string>
Forward FACCH or SACCH Word Action
This is the command that creates the message to be sent. It instructs the Test Set to
schedule the words to be transmitted at the Forward Block Count. You can send
one to four words. Each word consists of a 13 digit hexadecimal string.
The Default Flag Command string: composed of one hexadecimal digit per word
in the Word Command String. The first digit corresponds to the first word in the
Word Command string, the second digit to the second word, and so on. If the digit
is non-zero, the word will be transmitted each time the internal block count is
equal to the block the word was assigned to. If the digit is zero, the word will be
transmitted only once.
The Word Command string: one to four 13 digit hexadecimal strings. Each string
separates a FACCH or SACCH word. The leftmost digit is the word header and
the remaining 12 digits are the word contents.
Syntax
CALLP:DCCH:FACCh:FFSWord ‘<Forward Block>,<Default Flag Command
string>,<Word Command string>’
CALLP:DCCH:SACCh:FFSWord ‘<Forward Block>,<Default Flag Command
string>,<Word Command string>’
Sample
CALLP:DCCH:FACCh:FFSWord ‘300,10,0123456789ABCFEDCBA9876543’
0123456789ABC is the first word, and is repeated;
FEDCBA9876543 is the second word, and is not repeated.
In the string ‘10’, the 1 indicates repeat, the zero indicates don’t
repeat. Two digits in this string indicate that there are two words
to come in the Word Command string.
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Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
FACCh:SEND
FACCh:STOP
SACCh:SEND
SACCh:STOP
FSACCh:SEND
FSACCh:STOP
Send or stop the sending of the word sequence
These commands start and stop the sending of words. If a SACCH word has not
been scheduled for a given block, the word for that block will contain filler bits. If
a FACCH word has not been scheduled for a given block, a valid speech frame
will be sent.
Note: if the Period has been set to zero, no words are sent.
Syntax
CALLP:DCCH:FSACch:SEND
This command starts the sending of any FACCH or SACCH words previously scheduled.
CALLP:DCCH:SACCh:STOP
This command stops the sending of the SACCH words only.
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FACCh:CLEar <block>, <Num Words>
FACCh:CLEar:ALL
SACCh:CLEar <block>, <Num Words>
SACCh:CLEar:ALL
FSACch:CLEar <block>, <Num Words>
FSACch:CLEar:ALL
Clear Forward FACCH/SACCH word sequence action
This command removes the words at the specific block counts.
Syntax
CALLP:DCCH:FACCh:CLEar ‘<block count>,<Num Words>’
CALLP:DCCH:FACCh:CLEar:ALL
Sample
CALLP:DCCH:FACCh:CLEar ‘302,7’
Clears the 7 consecutive FACCH words starting with the word at Block
Count 302.That means words in blocks 302 - 308 are cleared.
167
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Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
Chapter 5, Programming the Cellular Adapter
FACCH and SACCH programming
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6
HP-IB Syntax Diagrams
HP-IB Syntax Diagrams
This chapter provides the syntax specific to the HP 83206A Cellular Adapter. To
program the Test Set, refer also to the HP 8920 RF Test Set’s Programmer’s
Guide.
169
Chapter 6, HP-IB Syntax Diagrams
Overview
Overview
This chapter identifies the DCCH subsystem’s HP-IB syntax. It also identifies
syntax additions made to the Measurement subsystem which occur when you use
this Cellular Adapter.
The DCCH subsystem is an HP-IB subsystem and is similar to the CALL Process
subsystem as described in the HP 8920 RF Communications Test Set
Programmer’s Guide. It contains many similar commands, but the commands
described here apply to the DCCH portion of the Test Set.
Refer to “Diagram Conventions” on page 171 to understand the syntax structure.
170
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Chapter 6, HP-IB Syntax Diagrams
Overview
Diagram
Conventions
Use the following diagram to see the conventions used in the syntax diagrams.
Root Element (Black oval at root level indicates continuation from previous page.)
AFGenerator2
:CDCSs
‘
space
:CODE
string
‘
(Field Name)
?
:RATE
Returns quoted string
See Real Number Setting Syntax*
(*Does not include the :STATe command)
Indicates the name of the display screen’s field that is
controlled by this command element.
Directs the user to a specific Instrument Command,
Measurement Command, or Number Setting Command
syntax diagram. The Number Setting Commands are
used to format numeric data and configure various
instrument measurement parameters.
Notes indicate which, if any, Number Setting Commands are
not supported by this particular path.
171
HP-IB Syntax Diagrams
Statement elements are connected by lines. Each line can be followed in only one
direction, as indicated by the arrow at the end of the line. Any combination of
statement elements that can be generated by starting at the root element and
following the line the proper direction is syntactically correct. An element is
optional if there is a path around it. The drawings show the proper use of spaces.
Where spaces are required they are indicated by a hexagon with the word “space”
in it, otherwise no spaces are allowed between statement elements.
Chapter 6, HP-IB Syntax Diagrams
DCCH
DCCH
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
173
Chapter 6, HP-IB Syntax Diagrams
DCCH
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
:HAPGain is used for setting gain for average power measurements. :HEGain is
used for EVM measurements. :AGAin is used for automatic power gain for digital
measurements.
175
Chapter 6, HP-IB Syntax Diagrams
DCCH
:HAPGain is used for setting gain for average power measurements. :HEGain is
used for EVM measurements. :AGAin is used for automatic power gain for digital
measurements.
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
177
Chapter 6, HP-IB Syntax Diagrams
DCCH
178
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
179
Chapter 6, HP-IB Syntax Diagrams
DCCH
180
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
181
Chapter 6, HP-IB Syntax Diagrams
DCCH
182
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
183
Chapter 6, HP-IB Syntax Diagrams
DCCH
184
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
185
Chapter 6, HP-IB Syntax Diagrams
DCCH
186
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
187
Chapter 6, HP-IB Syntax Diagrams
DCCH
188
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
189
Chapter 6, HP-IB Syntax Diagrams
DCCH
190
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Chapter 6, HP-IB Syntax Diagrams
DCCH
HP-IB Syntax Diagrams
191
Chapter 6, HP-IB Syntax Diagrams
DCCH
RF Path Control
The syntax for the RF Path field (shown on the DCCH CALL CONFIGURE
screen) uses a different root path than the other DCCH or DAMPs syntax. This
field is used by several types of cellular adapters, and is therefore a more ‘generic’
control than the specific DCCH or DAMPs syntax.
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Chapter 6, HP-IB Syntax Diagrams
Meas
Meas
This command is used to measure RF power when a PCS Interface is connected
and enabled.
193
HP-IB Syntax Diagrams
This subsystem has commands that are common to all Test Set applications. These
are described in the HP 8920 RF Communications Test Set Programmer’s Guide.
Measurement commands that are specific to the testing of the TIA/EIA-136
system are shown in this section.
Chapter 6, HP-IB Syntax Diagrams
Meas
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Chapter 6, HP-IB Syntax Diagrams
Meas
HP-IB Syntax Diagrams
195
Chapter 6, HP-IB Syntax Diagrams
Meas
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Chapter 6, HP-IB Syntax Diagrams
Meas
HP-IB Syntax Diagrams
197
Chapter 6, HP-IB Syntax Diagrams
SERV
SERV
The following commands are used to query some of the service latches in the test
set. Not all of the latch commands are shown.
Querying the
Timebase
Out-of-Lock
Indicator
Issue the :LATCH:SEL command first, specifying the reference sense latch as
shown above. Then use the :LATCH:VAL? query to see the status of the out-oflock indicator. 0=locked, 1=out-of-lock.
Checking if
Temperature
Compensation is
Necessary
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Chapter 6, HP-IB Syntax Diagrams
Integer Number Setting Syntax
Integer Number Setting Syntax
HP-IB Syntax Diagrams
199
Chapter 6, HP-IB Syntax Diagrams
Real Number Setting Syntax
Real Number Setting Syntax
200
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Chapter 6, HP-IB Syntax Diagrams
Multiple Real Number Setting Syntax
Multiple Real Number Setting Syntax
HP-IB Syntax Diagrams
201
Chapter 6, HP-IB Syntax Diagrams
Number Measurement Syntax
Number Measurement Syntax
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Chapter 6, HP-IB Syntax Diagrams
Number Measurement Syntax
HP-IB Syntax Diagrams
203
Chapter 6, HP-IB Syntax Diagrams
Multiple Number Measurement Syntax
Multiple Number Measurement Syntax
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7
Screen and Field Descriptions
Screen and Field Descriptions
This chapter identifies each screen provided by this Cellular Adapter. It also
provides detailed information on the fields within each screen. It is organized by
screen, and the list of fields for each screen is organized in alphabetical order.
205
Chapter 7, Screen and Field Descriptions
The DCCH Call Processing Screens
The DCCH Call Processing Screens
The main screen for this Cellular Adapter is the CALL CONTROL screen. You
can access the CALL CONTROL screen from any of the main HP 8920 screens
(RX Test, TX Test, and so on). You must be in the CALL CONTROL screen with
System Type DCCH to access the other screens available for TIA/EIA-136.
The CALL CONTROL screen controls the TIA/EIA-136 call setup and
maintenance functions. It also displays the data and measurements available. See
“About Call Processing Tasks and Measurements” on page 62 for more
information.
The DCCH CALL CONFIGURE screen provides additional controls for TIA/
EIA-136 features. See “CALL CONFIGURE Screen” on page 54 for more
information.
The DCCH CALL CONFIGURE II screen provides controls to define TIA/EIA136 message waiting indicators and caller ID features.
The DIG MEAS and ANL MEAS screens are available for special measurements
of TIA/EIA-136 mobiles. See Chapter 4, “Making Measurements,” on page 4 99
for more information.
The AUTHENTICATION screen allows you to enter parameters for
authentication into the Test Set. These parameters are used by the CAVE
algorithm during Call Processing functions such as registration, page, and
originate to verify a valid call.
DAMPS Call
Processing
DAMPS call control is similar to DCCH call control; however, the DAMPS
screen does not have a digital control channel selection, or vocoder selection, nor
does it operate in the PCS band.
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Chapter 7, Screen and Field Descriptions
The DCCH Call Processing Screens
This area
displays data
and measurements
when active.
Select this to
go to the
other screens.
dcch_cc.tif
Screen and Field Descriptions
This area controls the call
processing functions.
The CALL CONTROL Screen for the DCCH
Figure 60
The CALL CONTROL Screen for DAMPS
DAMPS.tif
Figure 59
207
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Parameters of the CALL CONTROL Screen
Refer to “Programming the Call Processing Subsystem” in the HP 8920B
Programmer’s Guide for detailed information on writing programs using the
CALL CONTROL screen functions.
The following list describes the parameters available on the CALL CONTROL
screen for DCCH.This list, which is in alphabetical order, has the following
format:
Parameter name
Settings:
Units or number type (integer, real, and so on).
Definition and description.
The CALL
CONTROL screen
Registra.tif
Figure 61
The CALL CONTROL Screen
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Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Access
Settings: On or Off
Units: None.
Access is an annunciator. It indicates that the Test Set and the mobile are in
communication, usually while setting up a call.
Access
Annunciator
The Access Annunciator Display (CALL CONTROL Screen)
Active
Settings: This is an immediate action field. Selecting it starts the action, an
annunciator indicates On or Off status.
Units: None.
Active is both an annunciator and a command. This command instructs the Test
Set to emulate a base station. The annunciator indicates that the Test Set is ready
to perform base station functions.
Annunciator
Command
Figure 63
The Active Command and Annunciator Display (CALL CONTROL Screen)
209
Screen and Field Descriptions
Figure 62
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Amplitude
Settings: -137.0 through +18.0
Units: dBm.
The amplitude of the RF signal that the Test Set will transmit.
Note that the available setting is greater than both the specified maximum output
power of the Test System and the system specification as well. This is done to
allow you to use the maximum output power of each individual Test Set.
Band
Settings: Cellular or US PCS
Units: None
The channel band assignment of the traffic channel.
CC Order
Settings: SSD Upd, Uniq Ch, Send MWI, Send SMS
Units: None
This field is only displayed when Authentication is turned on, and with the mobile
not in the connect state. It allows you to send a shared secret data update, unique
challenge, message waiting indicator, or short message services command to the
mobile.
See also, “Which Control Order Command Should I Use?” in the HP 8920B
Option 801 Condensed Programming Reference.
Chan
Settings: 1through 799, 990 through 1023 (Cellular); 1 through 1999 (US PCS)
Units: None, Integer values.
The channel number of the voice or traffic channel.
Connect
Settings: On or Off
Units: None.
Connect is an annunciator. It indicates that the Test Set and the mobile are in
Connect state (a call is up).
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Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Connect
Annunciator
Figure 64
The Connect Annunciator Display (CALL CONTROL Screen)
Cntl Order
Settings: Send MWI (Message Waiting Indicator) or Send SMS (Short Message
Services).
Units: None
Send a message waiting indicator or short message to the mobile when not in the
connect state. The field name is changed to CC Order if Authentication is turned
on. The field name is changed to Order, and the choices are changed, when the
mobile is in the connect state.
See also, “Which Control Order Command Should I Use?” in the HP 8920B
Option 801 Condensed Programming Reference.
Cntrl Channel
Settings: 1 through 799, 990 through 1023 (Cellular); 1 through 1999 (US PCS);
Dig or Analog
Units: None, Integer values only
211
Screen and Field Descriptions
cm-meas.tif
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Display
Settings: Data, Meas (this is a toggle field)
Units: None.
This is a toggle field. When Meas has been selected, another field appears below
the Data/Meas field. This new field provides a list of measurements which can
be made.
Measurements available in this list are:
EVM 1
EVM 10
Adjacent Channel Power
Average Power
MAHO
cm-meas.tif
•
•
•
•
•
Figure 65
The Data/Meas Field Display (CALL CONTROL Screen)
DVCC
Settings: 1 through 255
Units: None, Integer values.
Digital Verification Color Code. This is for the DTC only. For the DVCC of the
DCCH, see “Parameters of the DCCH CALL CONFIGURE Screen” on page 220.
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Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Handoff
Settings: This is an immediate action field. Selecting it starts the action.
Units: None.
Handoff is a command. It instructs the Test Set to make a handoff, based on the
new channel’s parameters (determined in the Traffic Chan Assignment
settings).
Screen and Field Descriptions
Handoff Command
cm-meas.tif
Figure 66
The Handoff Command Display (CALL CONTROL Screen)
213
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
MS ID
Settings: Phone Num, MIN2 MIN1, IMSI Dec, IMSI Hex
Units: Decimal or Hexadecimal values.
Mobile Station Identification. MSID is a two part field. The upper field
determines what will be displayed, either Phone Num, MIN, or IMSI. The lower
field is the value.
Phone Num Settings: 0 through 9999999999
MIN2 MIN1 Settings: 0 through FFFFFFFFF
IMSI Dec Settings: 0 through 999999999999999
IMSI Hex Settings: 0 through FFFFFFFFFFFFF
Choose between
Phone Num, MIN
or IMSI
Order
Chng PL 0
MS Id
Phone Num
5095550001
This is the actual value
of the Phone Num or MIN
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SID
231
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Order
Settings: Chng PL 0 through 10, Send MWI, and Send SMS for DTC; Chng PL 0
through 7, MAINTEN, and ALERT for AVC
Units: None.
These are the available orders that can be sent to the mobile when in the connect
state. The field name is changed to Cntl Order or CC Order (when
authentication is turned on), and the choices are changed, when the mobile is not
in the connect state.
Note that the available choices in the Order field are valid choices for the current
channel only.
See also, “Which Control Order Command Should I Use?” in the HP 8920B
Option 801 Condensed Programming Reference.
Settings: This is an immediate action field. Selecting it starts the action.
Units: None.
Page is both an annunciator and a command. This command instructs the Test Set
to page the mobile identified in the MS ID field. The annunciator indicates the
Test Set is sending the Page message.
Page
Annunciator
Page
Command
Figure 67
The Page Command and Annunciator Display (CALL CONTROL Screen)
215
Screen and Field Descriptions
Page
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Pwr Lvl
Settings: 0 through 10 for DTC, 0 through 7 for AVC. Note that Power Level 0 is
the maximum power.
Units: None, Integer values.
This is the power level that the mobile is to use.
CHANGING POWER
LEVELS
This parameter will change the power of the mobile when a voice or traffic channel assignment is made. This includes whenever a handoff occurs. To send an order that will change
the mobile’s power, use the Order field in the lower left-hand corner of the screen.
Register
Settings: This is an immediate action field. Selecting it starts the action.
Units: None.
Register is both an annunciator and a command. This command instructs the
mobile to register with the Test Set (emulated base station). The annunciator
indicates the Test Set is sending the Register message.
Register
Annunciator
Register
Command
Figure 68
The Register Command and Annunciator Display (CALL CONTROL Screen)
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Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Release
Settings: This is an immediate action field. Selecting it starts the action.
Units: None.
Release is a command. This command instructs the Test Set to release the call in
progress.
Screen and Field Descriptions
Release
Command
cm-meas.tif
Figure 69
The Release Command Display (CALL CONTROL Screen)
SAT
Settings: 5970, 6000, 6030
Units: Hz.
This is the Supervisory Audio Tone. Used with AVC only.
SID
Settings: 1 through 32767
Units: None, Decimal or hexadecimal values.
This is the System Identification of the system which the Test Set is emulating.
217
Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
Slot
Settings: 1 through 6
Units: None, Integer values.
Slot is for the DTC only. The timeslot which the mobile is directed to use.
During full-rate transmission, slots are paired in the following manner: 1&4, 2&5,
3&6.
System Type
Settings: select DCCH for testing TIA/EIA-136 mobiles, DAMPS for TIA/EIA-627
mobiles.
Units: None.
System Type lists the different systems which can be controlled with the
appropriate Cellular Adapter. To test TIA/EIA-136 mobiles using the digital
control channel, select DCCH.
Traffic Channel
Assignment
Settings: this is a group of fields (Type, Band, Chan, Slot, Pwr Lvl, DVCC)
Units: None.
Traffic Channel Assignment is a group of fields associated with a Digital Traffic
Channel. For the fields associated with the AVC, see Voice Channel Assignment.
Type
Settings: DTC or AVC
Units: None.
The channel type for the voice/traffic channel. DTC is the Digital Traffic Channel,
AVC is the Analog Voice Channel.
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Chapter 7, Screen and Field Descriptions
Parameters of the CALL CONTROL Screen
VC Order
Settings: Chng PL 0 through 10, Send MWI, SSD Upd, Uniq Ch, and Send SMS.
Units: None
These are the available orders that can be sent to the mobile when in the connect
state when authentication is turned on. If authentication is not turned on, and the
mobile is in the connect state, this field name is changed to Order.
The field name is changed to Cntl Order or CC Order (when authentication is
turned on) when the mobile is not in the connect state.
See also, “Which Control Order Command Should I Use?” in the HP 8920B
Option 801 Condensed Programming Reference.
Voc
Settings: VSELP or ACELP
Select the type of vocoder used by the mobile. This field is displayed only when
the system type is DCCH.
Voice Channel
Assignment
Settings: this is a group of fields (Type, Chan, Pwr Lvl, SAT)
Units: None.
A group of fields associated with an Analog Voice Channel. See also Traffic
Channel Assignment.
219
Screen and Field Descriptions
Units: None
Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
Parameters of the DCCH CALL CONFIGURE Screen
The DCCH CALL CONFIGURE screen allows you to modify features for
TIA/EIA-136.
dcch_cc.tif
Figure 70
The DCCH CALL CONFIGURE Screen
# Neighbors
Settings: 0 through 6
Units: None.
# Neighbors selects the number of neighbor channels to be evaluated with the
MAHO command. If the choice is non-zero, then a set of fields appears below this
field. You can then select the channels to be evaluated. See “BAND (Neighbor
List)”, and “Channel (Neighbor List)” on page 221.
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Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
# Systems
Settings: 1 through 8
Units: None
Specifies the number of residential or public systems and causes the PSID/RSID
field to be displayed.
% BIT ERROR
Settings: 0.00 through 20.00
Units: %.
This sets the percentage (%) of bit errors to be inserted when measuring BER,
WER, or MAHO BER. To insert errors on a DTC, the mobile must be up on a call
before the % bit error can be entered. To insert errors in test mode, set up the
channel first, then enter the % bit error.
Screen and Field Descriptions
Access Burst
Choices: Norm or Abbrev
Units: None.
Access Burst selects between a normal burst or abbreviated burst.
BAND (Neighbor
List)
Settings: Cellular or US PCS
Units: None.
This is the frequency band of the channels in the neighbor list.
This field is displayed only when the # Neighbors field is set greater than 0.
Channel (Neighbor Settings: 1 through 799
List)
Units: None.
This is the channel number of the channels in the neighbor list.
This field is displayed only when the # Neighbors field is set greater than 0.
Country Code
Settings: 0 through 999
Units: None.
This is the country code as per CCITT E.212
221
Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
DCCH DVCC
Settings: 0 through 255
Units: None.
This is the DVCC which applies to the DCCH only. For the DVCC of the DTC,
see “Parameters of the CALL CONTROL Screen” on page 208.
Dig Signal
Settings: Std or NonStd
Units: None.
Dig Signal specifies if the received signal should conform to standard DCCH or
DAMPS protocol. NonStd causes the Cellular Adapter’s DSP to ignore protocol
discrepancies and only report an error condition if the signal level is too high.
DTC Burst
Settings: Norm or Shorten
Units: None.
DTC Burst selects between a normal burst or shortened burst. The shortened burst
is usually transmitted as part of time alignment to help avoid collisions between
the mobile’s burst and the burst in an adjoining time slot.
Power Meter
Settings: This is an action field. Selecting this field automatically zeros the power
meter within the Test Set.
Units: None.
PSID/RSID
Settings: PSID or RSID, and 1 through 65,535
Units: None
Lists the private or residential systems and the associated system number for each
system. This field is only displayed if the value of the # Systems field is ≥1.
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Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
Public Sys
Settings: On or Off
Units: None
This enables or disables the Non-Public System operation. It is used in
conjunction with the # Systems, MCC, PSID/RSID, and SOC fields.
RF Path
Settings: Bypass or IQ
Units: None
Reg Conf
Settings: On or Off
Units: None
The Registration Confirmation field is used when sending a registration command
to the mobile. When set to On, this field causes the Test System to automatically
send a confirmation message to the mobile after the Test System correctly
receives the registration information from the mobile.
223
Screen and Field Descriptions
This switches the RF Generator’s IQ modulator in or out of the generator’s path.
This function is normally switched automatically, depending on the System Type
and/or Cntrl Chan selected. The Bypass setting is used for creating analog signals,
such as standard AMPS voice channels. This field overrides the automatic setting
if necessary (such as when you want to calibrate TX Power with an analog signal
while displaying the DIGITAL MEASUREMENTS screen).
Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
Sat Tol
Settings: Narrow or Wide
Units: None
This sets the allowed frequency error for the mobile’s supervisory audio tone
(SAT) when connecting to an AVC. The Wide setting can be beneficial when
processing a call where a large amount of noise is present with the SAT tone.
•
•
SMS Contents
Narrow - requires the sat tone to be within ±10 Hz of the frequency specified in the
CALL CONTROL screen SAT field when connected on an AVC.
Wide - accepts a sat tone in the range of 0 Hz to 7 kHz.
Settings: Up to 96 characters.
Units: None
This allows you to enter a custom Short Message Services (SMS) message to
transmit to the mobile. The message is sent when Send SMS is selected from the
CALL CONTROL screen’s Order or Cntl Order field. The number of
characters that are transmitted is determined by the SMS Size field.
SMS Msg
Settings: 243 factory-defined characters.
Units: None
A 243-character message is automatically placed in this field when the SMS Type
is set to Auto. You can edit the first 96 characters if desired, but the remaining
characters cannot be changed or viewed.
The message is sent when Send SMS is selected from the CALL CONTROL
screen’s Order or Cntl Order field. The number of characters that are
transmitted is determined by the SMS Size field.
SMS Size
Settings: 1 through 243.
Units: characters (implied)
This setting defines the number of characters in the SMS Contents field that are
used when an SMS message is sent. The factory-defined character string “Auto”
uses the full 243 characters allowed.
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Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE Screen
SMS Type
Settings: Custom or Auto.
Units: None
This setting selects the SMS message to send:
Cust uses the characters you enter in the SMS Contents field.
Auto automatically enters a factory-defined message into the
SMS Contents field.
The number of characters sent in the message is controlled by the SMS Size field.
SOC
Settings: 0 through 4096
Units: None
Screen and Field Descriptions
Enter the System Operating Code when using Non-public System functions.
225
Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE II Screen
Parameters of the DCCH CALL CONFIGURE II Screen
The DCCH CALL CONFIGURE II screen is used to define information sent to
the mobile for testing message waiting (MWI) and caller ID functions.
Calconf2.tif
Figure 71
The DCCH CALL CONFIGURE II Screen
Calling Name
Settings: 25 characters
Units: None
This is the name of the station that is calling the mobile.
Calling Num
Settings: Integer. Ten characters maximum.
Units: None.
This is the number of the station that is calling the mobile.
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Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE II Screen
MS Capab
Settings: Cellular, US PCS, or Band 10
Units: None
Specify whether the mobile uses standard cellular protocol or if it is
PCS-capable. If you are testing a PCS-capable mobile in the cellular band, you
should still specify US PCS. For downbanding, specify Band 10 (see
“Downbanding” on page 81.)
Name Size
Settings: 0 through 25
Units: None
This is the number of characters in the Calling Name field that are sent.
Settings: 0 through 99
Units: None
Specifies the number of fax messages that are waiting for the mobile to respond
to. This is used in the message waiting indicator (MWI) command.
Num SMS
Settings: 0 through 99
Units: None
Specifies the number of short message services (SMS) messages that are waiting
for the mobile to respond to. This is used in the message waiting indicator (MWI)
command.
Num Voice
Settings: 0 through 99
Units: None
Specifies the number of voice messages that are waiting for the mobile to respond
to. This is used in the message waiting indicator (MWI) command.
227
Screen and Field Descriptions
Num Fax
Chapter 7, Screen and Field Descriptions
Parameters of the DCCH CALL CONFIGURE II Screen
Pres Type
Settings: Pres OK (presentation allowed), Pres Res (presentation restricted), and
Not Avail (number not available)
Units: None
This determines the information that is sent when calling a mobile:
•
•
•
Screen Ind
Pres OK - both the Calling Name and Calling Number are sent.
Pres Res - only the Calling Number is sent.
Not Avail - neither the Calling Name or Calling Number are sent.
Settings: Not Scrn (not screened), Ver&Pass (verified and passed), Ver&Fail
(verified and failed), and Nwrk Prov (network provided)
Units: None
Temperature
Setting: This is an immediate action field that is only used if a PCS Interface is
attached. Selecting this field causes the PCS Interface to perform a temperature
compensation routine to improve measurement accuracy through the interface.
Units: None
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Chapter 7, Screen and Field Descriptions
Parameters of the DIGITAL MEASUREMENT Screen
Parameters of the DIGITAL MEASUREMENT Screen
The DIGITAL MEASUREMENT screen enables measurements in the test mode
of the mobile.
The DIGITAL
MEASUREMENT
Screen
Screen and Field Descriptions
dig_meas.tif
Figure 72
The DIGITAL MEASUREMENT Screen
229
Chapter 7, Screen and Field Descriptions
Parameters of the DIGITAL MEASUREMENT Screen
Amplitude
Settings: −137.0 to +18.0
Units: dBm.
This is the amplitude of the RF signal that the Test Set will transmit. Note: you
may have to adjust the RF Gen Amplitude, Output Port, or Atten Hold when using
values above 0 dBm. Refer to the HP 8920 Series RF Test Set User Guide for
more information.
Note that the available setting is greater than both the specified maximum output
power of the Test System and the system specification as well. This is done to
allow you to use the maximum output power of each individual Test Set.
Dig Meas
Settings: EVM1, EVM10, Adj Ch Pwr, Avg Pwr, BER, DTC WER, DCCH WER
Units: None.
This field shows the set of measurements that are being displayed.
DVCC
Settings: 1 through 255
Units: None, Integer values.
This is the Digital Verification Color Code. This is for the DTC only. For the
DVCC of the DCCH, see “Parameters of the DCCH CALL CONFIGURE
Screen” on page 220.
Pwr Gain
Settings: Auto, Hold
Units: dBm, Integer values.
Pwr Gain controls the RF attenuator and the DSP gain. Used with Average Power,
it is frequently best to keep this in Auto mode.
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Chapter 7, Screen and Field Descriptions
Parameters of the DIGITAL MEASUREMENT Screen
Slot
Settings: 1 through 6
Units: None, Integer values.
Slot is for the DTC only. The timeslot which the mobile is directed to use.
During half-rate transmission, slots are paired in the following manner: 1&4,
2&5, 3&6.
Traffic Chan
Settings: 1 through 799, 990 through 1023
Units: None, Integer values.
This is the channel number of the traffic channel.
231
Screen and Field Descriptions
Note that if you change the Traffic Channel number field in the DIGITAL
MEASUREMENT screen, the RF Gen Frequency field in the Duplex screen
changes corresponding to the new channel number. However, if you change the
RF Gen Frequency field in the Duplex screen, the Traffic Channel number does
not change.
Chapter 7, Screen and Field Descriptions
Parameters of the DIGITAL MEASUREMENT Screen
Trig Type
Settings: Amptd Hi, Amptd Mid, Amptd Low, Immediate, ANL TG IN, Frame
Clk, 2x Frame
Units: None
This field specifies the trigger conditions for the digital analyzer.
Selecting the appropriate trigger is necessary when making BER measurements
and aligning the digital analyzer to timeslots for power, adjacent channel power,
or EVM measurements.
Selecting Immediate causes the analyzer to be triggered immediately.
Selecting ANL TG IN causes the analyzer to be triggered by the signal at the
HP 83206A’s ANALYZER TRIGGER IN connector. However, this connector is
not active on the HP 82603A.
Selecting 2x Frame causes the analyzer to be triggered by the 50 Hz, 2 × frame
clock provided by the Test Set’s digital generator.
Selecting Frame Clk causes the analyzer to be triggered by the 25 Hz frame
clock provided by the Test Set’s digital generator.
Amplitude triggering uses low-to-high amplitude transitions in pulsed carriers as
the trigger source. Trigger thresholds are at −6 dB (Amptd Hi), −12 dB (Amptd
Mid), and −18 dB (Amptd Low) from the maximum AdcMaxAbs level. The
Input field must be set to either Int IF or Ext IF IN.
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Chapter 7, Screen and Field Descriptions
Parameters of the ANALOG MEASUREMENT Screen
Parameters of the ANALOG MEASUREMENT Screen
This screen is used to make RF and audio measurements on the mobile station
connected to the simulated base station while on an active voice channel.
The host firmware does not monitor the mobile station’s transmitted carrier power
while the ANALOG MEASUREMENT screen is displayed. If the power falls
below 0.0005 Watts no error message is displayed nor will the simulated base
station terminate the call while on the ANALOG MEASUREMENT screen.
Screen and Field Descriptions
The ANALOG
MEASUREMENT
Screen
scrn28.tif
Figure 73
The ANALOG MEASUREMENT Screen (when DAMPS system type is selected)
AF Anl In
Settings: FM Demod, AM Demod, SSB Demod, Audio In, Radio In, Ext Mod,
Mic Mod, FM Mod, AM Mod, Audio Out
Units: None.
This field selects the input for the Audio Frequency analyzer.
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Chapter 7, Screen and Field Descriptions
Parameters of the ANALOG MEASUREMENT Screen
AF Freq
Settings: SINAD, Distn, SNR, AF Freq, DC Level, Current
Units: None.
This field is a one-of-many field used to select the type of measurement to be
made by the Audio Frequency Analyzer on the audio signal being measured.
AFGen1 Freq
Settings: 0 through 30 kHz
Units: kHz, Hz, real values
This field sets the output frequency of Audio Frequency Generator #1.
AFGen1 To
This field has two subfields:
•
•
the upper subfield sets the destination port for Audio Frequency Generator #1
• FM = RF Generator FM modulator
• AM = RF Generator AM modulator
• Audio Out = AUDIO OUT connector on front panel of Test Set
the lower subfield sets the:
• FM modulation deviation if upper subfield set to FM (Units: Hz, kHz)
• AM modulation depth if upper subfield set to AM (Units: %)
• amplitude of audio signal at the AUDIO OUT connector if upper subfield set to
Audio Out (Units: volts rms)
For testing mobile stations the upper field is normally set to FM and the lower field
set to the desired FM deviation in kHz.
Amplitude
Settings: −137.0 through +18.01
Units: dBm.
This field sets the output power of the simulated base station’s transmitter (the
output power of the Test Set’s RF Generator).
Note that the available setting is greater than both the specified maximum output
power of the Test System and the system specification as well. This is done to
allow you to use the maximum output power of each individual Test Set.
De-Emphasis
Settings: 750 us, Off
De-Emphasis is used to select or bypass the 750 µs de-emphasis filter network
used to condition the audio signal before being analyzed by the Audio Frequency
Analyzer.
Units: None.
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Chapter 7, Screen and Field Descriptions
Parameters of the ANALOG MEASUREMENT Screen
Detector
Settings: RMS, RMS*SQRT2, PK+, PK-, Pk±/2, Pk±Max, Pk+ Hold, Pk±/2 Hold,
Pk±Mx Hold
Units: None.
This field is used to select the type of detector used to measure the amplitude of
the audio signal being measured.
Filter 1
Settings: <20Hz HPF, 50Hz HPF, 300Hz HPF, C MESSAGE
Units: None.
This field selects one of several standard or optional audio frequency filters which
can be used to condition the audio signal before being analyzed by the Audio
Frequency Analyzer.
Settings: 300Hz LPF, 3kHz LPF, 15kHz LPF, >99kHz LPF, 6kHz BPF
Units: None.
This field selects one of several standard or optional audio frequency filters which
can be used to condition the audio signal before being analyzed by the Audio
Frequency Analyzer.
FM Deviation
This is a measurement
This field displays the measured FM deviation of the carrier being transmitted by
the mobile station. Four dashes (----) indicate that no carrier is present to measure.
TX Freq Error
This is a measurement
This field displays the frequency error (error = assigned carrier frequency measured carrier frequency) of the carrier being transmitted by the mobile station.
Four dashes (----) indicates that there is no carrier frequency present to measure.
TX Power
This is a measurement
This field displays the measured RF power of the carrier being transmitted by the
mobile station. Four dashes (----) indicates that there is no carrier present to
measure.
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Screen and Field Descriptions
Filter 2
Chapter 7, Screen and Field Descriptions
Parameters of the DTC AUTHENTICATION Screen
Parameters of the DTC AUTHENTICATION Screen
This screen provides authentication features that are used to test the mobile’s call
security functions to prevent call fraud on a DTC. Authentication enables the base
station to confirm the mobile’s identity.
The screen shown in Figure 74 is displayed when the System Type field on the
CALL CONTROL screen is set to DCCH, the Cntrl Chan field is set to Dig, and
the mobile is connected to a DTC.
authen_scrn.tif
Figure 74
The Authentication Screen (when assigned to a DTC)
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Chapter 7, Screen and Field Descriptions
Parameters of the DTC AUTHENTICATION Screen
A_KEY
Settings: 20-digits
Units: None
The A_key is a 26-digit number stored in the mobile station’s permanent security
and identification memory and is not accessible to the user. The number you enter
must match that in the mobile. This field lets you enter the first 20 digits of this
value; the other 6 digits are computed using a special algorithm and are
automatically entered in the CHECKSUM field.
Authent
Settings: Off or On
Units: None
This turns authentication features on or off for call processing operations.
CHECKSUM
Settings: 6-digit hexidecimal value
Units: None
This field contains the last 6 digits of the A_key. The first 20 digits are entered in
the A_KEY field.
ESN
This field is used to enter the electronic serial number (ESN) of the mobile station.
There are two methods which can be used to enter the ESN. The serial number can
be entered as an 8-digit hexadecimal value directly into this field or it can be
captured by the Test Set through a registration order.
To enter the electronic serial number directly, select the ESN field and enter the
information in hexadecimal format.
237
Screen and Field Descriptions
The user must obtain a valid A_Key from the mobile station’s manufacturer or
from the HLR/AC to test Authentication procedures, otherwise the authentication
process will fail. The Test Set does not write data back to the A_key field during
manual operation.
Chapter 7, Screen and Field Descriptions
Parameters of the DTC AUTHENTICATION Screen
RAND
RAND is a 32 bit value that is entered as an 8-digit hexadecimal number. The
mobile station stores and uses the most recent version of RAND in the
authentication process.
RANDSSD
RANDSSD is a 56-bit random number (14 hexidecimal digits) created by the
home system for the mobile, and must be entered prior to issuing a Shared Secret
Data (SSD) Update. This value is used with the mobile station’s A-key and ESN
to create its Shared Secret Data (SSD).
RAND_U
RAND_U is the 24-bit random number issued by the base station in the Unique
Challenge Order. RAND_U is entered as a 6-digit hexadecimal value.
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Chapter 7, Screen and Field Descriptions
Parameters of the AVC AUTHENTICATION Screen
Parameters of the AVC AUTHENTICATION Screen
The following fields are displayed on the AUTHENTICATION screen when the
System Type field on the CALL CONTROL screen is set to DCCH and the
Cntrl Chan field is set to Analog, or when the mobile is connected on an
Analog Voice Channel (AVC).
Screen and Field Descriptions
Authen.pcx
Figure 75
The AUTHENTICATION Screen (when assigned to an AVC)
These parameters are used by the Cave algorithm during Call Processing
functions such as registration, page, and originate to verify a valid call.
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Chapter 7, Screen and Field Descriptions
Parameters of the AVC AUTHENTICATION Screen
A_Key
Settings: 26-digit
Units: None
The A_key is a 26-digit decimal number stored in the mobile station’s permanent
security and identification memory and is not accessible to the user. The user must
obtain a valid A_Key from the mobile station’s manufacturer or from the HLR/AC
to test Authentication procedures, otherwise the authentication process will fail.
The Test Set reads the first 20-digits and using them during the authentication
process. The Test Set does not write data back to the A_key field during manual
operation.
NOTE:
A_key generation is not available through the manual user interface. A_key generation is only
supported through the remote user interface.
Authent
Settings: Off or On
Units: None
This field is used to activate the authentication process within the Test Set. With
this field set to On, the Test Set issues system parameter overhead messages
including SPC WORD1, SPC WORD2, ACCESS, RandChalA, and RandChalB to
the mobile station.
ESN
Settings: 8-digit hexadecimal
Units: None
This field is used to enter the electronic serial number (ESN) of the mobile station.
There are two methods which can be used to enter the ESN. The serial number can
be entered as an 8-digit hexadecimal value directly into this field or it can be
captured by the Test Set through a registration order.
To enter the electronic serial number directly, select the ESN field and enter the
information in hexadecimal format.
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Chapter 7, Screen and Field Descriptions
Parameters of the AVC AUTHENTICATION Screen
RAND_A
Settings: 4-digit hexadecimal
Units: None
RAND_A is the 16 most significant bits of RAND and is entered as a 4-digit
hexadecimal value. The mobile station stores and uses the most recent version of
RAND in the authentication process. RAND_A is user definable.
RAND_B
Settings: 4-digit hexadecimal
Units: None
RANDSSD_1
Settings: 6-digit hexadecimal
Units: None
RANDSSD_1 is the 24 most significant bits of the random number issued by the
base station in the SSD Update Order. RANDSSD_1 is user definable.
RANDSSD_2
Settings: 6-digit hexadecimal
Units: None
RANDSSD_2 is the 24 subsequent bits (following RANDSSD_1) of the random
number issued by the base station in the SSD Update Order. RANDSSD_2 is user
definable.
241
Screen and Field Descriptions
RAND_B is the 16 least significant bits of RAND and is entered as a 4-digit
hexadecimal value. The mobile station stores and uses the most recent version of
RAND in the authentication process. RAND_B is user definable.
Chapter 7, Screen and Field Descriptions
Parameters of the AVC AUTHENTICATION Screen
RANDSSD_3
Settings: 2-digit hexadecimal
Units: None
RANDSSD_3 is the 8 least significant bits of the random number issued by the
base station in the SSD Update Order.
RAND_U
Settings: 6-decimal hexadecimal
Units: None
RAND_U is the 24-bit random number issued by the base station in the Unique
Challenge Order. RAND__U is user definable.
1 of N
Settings: 1 through 10 decimal
Units: None
The 1 of N field instructs the Test Set how many times to send a system parameter
overhead message. The message contains RAND values, RAND_A and
RAND_B. The RAND values are difficult for phones which do not support
authentication to parse. This field allows for testing of these phones along with the
testing of phones which support authentication by altering the number of times the
system parameter message is sent to the mobile station.
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8
Connector Descriptions
Connector Descriptions
This chapter lists the connectors on the front and back panels, and provides a brief
description of each.
243
Chapter 8, Connector Descriptions
Connector overview
Connector overview
Front
Back
832 06A
T DMA CEL L ULA R A DA PTE R
RF IN/ RF IN/
PWR
REF
UNLOCK
ANALYZER
ANALYZER
ANALYZER
GENERATOR
TRIGGER
IN
BASEBAND
DATA IN
CONTROL I/O
DATA
CLOCK IN
BASEBAND
DATA IN
DIAG
OUT
GEN BB
ANL
BIT CLK
DATA OUT TRIG OUT OUT
SYMBOL
CLK OUT
114.3 MHz IF IN
CW
RF IN
REF IN
10 MHz
IQ
REF OUT EXT
IF IN
RF OUT
FRAME CLK OUT
Figure 76
HP 83206A Cellular Adapter Connectors Front and Back Views
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SERIAL PORT
HP 83206A TDMA
Cellular Adapter
OPTIONAL
MOD OUT
Chapter 8, Connector Descriptions
Front Panel Connectors
Front Panel Connectors
Analyzer Baseband Direct Input to the Digital Analyzer for analyzing data streams. This input is
available through HP-IB control of the TDMA Encoder screen. (Not in use at this
Data In
time)
Operating Considerations
The rising edge of the Analyzer Data Clock In signal triggers the analyzer to read
this data.
The data must be present on the input for greater than or equal to 100 nsec before
the rising edge of the clock. The data must be stable on this input for
>=1.3microsec after being triggered by the Data Clock to correctly read the data.
Input level = TTL
Input impedance = 100 kΩ
Data rates:
•
Analyzer Data
Clock In
48.6 kbit/sec
The rising edge of the signal applied to this front panel port causes the data on the
Analyzer Baseband Data In connector to be sampled by the Digital Analyzer. (Not
in use at this time)
Connector Descriptions
Operating Considerations
Input level = TTL
Input impedance = 100 kΩ
Expected Clock Frequency:
•
48.6 kbit/sec
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Chapter 8, Connector Descriptions
Front Panel Connectors
Analyzer Trigger In This connector allows external signals to trigger the Digital Analyzer to begin
sampling the selected input. (Not in use at this time)
Operating Considerations
Used for frame synchronization of the analyzer.
Input impedance = 100 kΩ
Input level = TTL (rising edge)
Generator
Baseband Data In
This connector allows you to send external data to the Pre-modulation filter/IQ
modulator. (Not in use at this time)
Operating considerations
When using an external reference, the same reference used to generate the
Baseband data must also be connected to the Cellular Adapter’s Ref In connector
to correctly clock the data.
Modulation data consists of two-bit symbols (00, 01, 10, 11) that are sent to the
Pre-modulation filter. The first bit of a symbol is clocked in on the rising edge of
the symbol clock. Care must be taken to properly align the input data with the
Symbol Clock to correctly modulate the Digital Generator.
This signal is not affected by the Data Delay field setting. The nominal delay
from the first data bit in a two-bit symbol to its peak RF response (decision point)
after pi/4 DQPSK modulation is 12 bits (6 symbols).
Input level = TTL
Data rate = 48.6 kbits/sec
Input impedance = 100 kΩ
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Chapter 8, Connector Descriptions
Rear Panel Connectors
Rear Panel Connectors
Anl Trig Out
This connector outputs the signal used to synchronize external equipment to the
Digital Analyzer. A rising edge indicates the Analyzer was triggered. (Not in use
at this time)
Operating Considerations
All values are rounded to the nearest full bit.
Bit Clk Out
This signal outputs a square wave from the Digital Generator’s Bit Clock. This
allows you to synchronize external equipment to the Digital Generator.
Operating Considerations
When using internally generated data, the Gen BB Data Out signal is stable before
the rising edge of the Bit Clk Out, allowing the Bit Clock to be used to strobe the
data into your external equipment.
Output frequency = 48.6 kHz
Output level = CMOS
Output impedance = 50 Ohms
Control I/O
Connector Descriptions
This connector provides data communication between the Test Set and the
Cellular Adapter. The Cellular Adapter cannot be turned on without this cable
attached to an operating Test Set.
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Chapter 8, Connector Descriptions
Rear Panel Connectors
CW RF In
This is the RF carrier input to the Cellular Adapter. It is normally connected to the
Test Set’s CW RF Out connector.
Operating Considerations
Nominal input level = 0 dBm, +/- 4 dB
Maximum input level = + 12dBm
Input impedance = 50 Ohms
Frequency range:
•
•
Diag Out
500 to 1000 MHz without IQ modulation
810 to 956 MHz with IQ modulation
This port provides various signals used to service the Cellular Adapter.
When servicing the Cellular Adapter, this port is connected directly to the Test
Set’s AUDIO IN (HI) connector. Diagnostic routines are then run using the Test
Set’s internal IBASIC computer to locate the faulty module.
Ext IF In
This port is generally connected to the HP 8920B Option 006 DET OUT port for
making the average power measurement.
This connector allows an external IF signal to be used in place of the 114.3 MHz
IF that comes from the Test Set. This allows you to provide your own external
downconversion of the modulated carrier, bypassing the Test Set receiver down
conversion to 114.3 MHz and Cellular Adapter down conversion to 700 kHz.
Operating Considerations
Input Frequency = 700 kHz, +/- 1 kHz
Input level range = 30 to 400 mV peak
Input impedance = about 1 k Ohm
Set the Sample Clk to 2.5 MHz for a 700 kHz IF and 1 MHz for a 220 kHz IF.
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Chapter 8, Connector Descriptions
Rear Panel Connectors
Frame Clk Out
This connector provides a square wave from the Digital Generator’s Frame Clock.
This allows you to synchronize external equipment to the Digital Generator.
Operating Considerations
Nominal output frequency = 25 Hz
Output level = CMOS
Output impedance = 50 Ohms
Gen BB Data Out
This connector monitors the digital signal applied to the Pre-modulation Filter/IQ
Modulator. This signal comes from either of two sources:
The internal Digital Generator section
The front panel Generator Baseband Data In connector (not available yet)
Operating considerations
The nominal delay from the first data bit in a two bit symbol to its peak RF
response after pi/4 DQPSK modulation is 12 bits (6 symbols).
Output level = CMOS
Output impedance = 50 Ohms
Nominal Data Rate = 48.3 kbits/sec
Ref In
25 Hz, 50 Hz, 24.3 kHz, 48.6 kHz, 1 MHz, 2 MHz, 5 MHz, 10 MHz
Operating Considerations
The Ref Unlock indicator is lit if the reference signal’s frequency does not match
this field setting.
249
Connector Descriptions
This connector provides a timing reference for the Digital Generator and Digital
Analyzer sections. One of these frequencies must be used:
Chapter 8, Connector Descriptions
Rear Panel Connectors
NOTE:
Using a Frame or 2X Frame Reference: it takes about 30 seconds to lock to a 25 or 50 Hz
reference after connecting the reference signal and selecting the correct setting in the
Reference field. The 200 and 400 Hz selections are a little faster. If the reference signal is
disconnected and then reconnected, you must re-select the reference frequency in the
Reference field to start the phase-locking process over again. If you do not re-select the
reference frequency, it can take hours to re-establish phase lock with these very low
frequency references.
Serial Port
Not used.
Symbol Clk Out
This connector provides an output for the Symbol Clock of the Digital Generator.
This allows you to synchronize external equipment to the Digital Generator.
Operating Considerations
Data Delay is not programmable yet. When using internally generated data, and
the Data Delay value is an even number, the first bit of a symbol is present on the
rising edge of the Symbol Clock. If the delay is an odd number, the second bit of
the symbol is present on the rising edge of the Symbol Clock.
Nominal output frequency = 24.3 kHz
Nominal output = CMOS
Output impedance = 50 Ohms
114.3 MHz IF In
This connector is where the Cellular Adapter receives the 114.3 MHz IF from the
Test Set’s receiver section. It is usually connected to the Test Set’s 114.3 MHz IF
OUT port.
Operating Considerations
Input impedance = 50 Ohms
Input level range = -53 to -30 dBm
Input Bandwidth: The incoming signal goes through a 114.3 MHz bandpass filter
with about 400 kHz 3 dB bandwidth before down-conversion to 700 kHz. A 20
MHz LPF and a 3 MHz LPF provide additional filtering before being analyzed.
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Chapter 8, Connector Descriptions
Rear Panel Connectors
10 MHz REF OUT This rear-panel port outputs a 10 MHz reference. This signal is phase locked to the
signal applied to the REF IN port. All clocks (Bit, Symbol, and Frame) are
derived from or phase locked to this signal.
If the REF UNLOCK indicator is lit, the output frequency may not be accurate.
Operating Considerations
Nominal output level: >+5 dBm
Output impedance = 50 Ω
Frequency stability = the same as the signal applied to the REF IN connector
(typically needs to be within ±5 ppm of the selected Reference frequency).
Connector Descriptions
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Chapter 8, Connector Descriptions
Rear Panel Connectors
IQ RF OUT
This rear-panel port outputs the carrier applied to the rear-panel CW RF IN
connector.
This port is normally connected to the Test Set’s rear-panel IQ RF IN connector.
Operating Considerations
Even when the Digital Generator is not actively sending a message, the IQ
Modulator still receives symbol data.
Output impedance = 50 Ω
Nominal output level:
•
•
−9.5 dBm (±1.5 dB) when IQ modulated.
0 dBm un-modulated (CW).
Frequency range:
•
•
500 to 1000 MHz without IQ modulation (may have AM or FM from the Test Set).
810 to 956 MHz with IQ modulation.
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9
Troubleshooting
This section discusses the probable causes of some problems that may occur while
using the HP 83206A in your Test System. Sections are divided into groups
dealing with specify hardware configurations and operating modes.
If, after using the information in this section, you still cannot solve your problem,
call the HP Help line at 1-800-922-8920 (USA and Canada only) for product or
application assistance.
253
Troubleshooting
Call for HP
Support
Chapter 9, Troubleshooting
General Operating Reminders
General Operating Reminders
If a Non-recoverable Firmware Error is Encountered
When a non-recoverable firmware error occurs, the Test Set is “locked up”, and
displays a message indicating that you must turn the Test Set off and back on
before you can use the Test Set again. If you encounter this type of message, you
should record the information listed below before turning the Test Set off, and
then call your HP Field Engineer. You may also call the HP Support line at
1-800-922-8920.
When calling in to report a non-recoverable firmware error, have the following
information ready:
•
•
•
•
•
•
•
•
•
Your name and phone number.
Your company’s name and address.
The Test Set model number.
The Test Set’s firmware revision (displayed at the top of the screen during power-on
and also on the CONFIGURE screen).
The Call Processing system type you were using (DCCH, AMPS...etc).
The make and model of mobile you are using.
How often this error occurs when repeating the operation that originally caused the
error.
Complete message displayed when the error occurs.
How to duplicate the error. This is especially important when getting help. If your HP
contact person has the needed instrument(s), that person will try to duplicate the
operation as soon as possible to try to help you isolate the problem.
The REF UNLOCK Indicator Must be Off
The REF UNLOCK indicator on the front panel of the Cellular Adapter must be
off during operation (and the PWR indicator must be lit). If the REF UNLOCK
indicator is lit, the Cellular Adapter is not receiving the 10 MHz reference from
the Test Set. Connections for the Cellular Adapter and PCS Interface are shown in
Chapter 11, “Installing the Cellular Adapter,” on page 285.
Displaying DCCH Screens
To access the various DCCH screens shown in this manual, you must access the
CALL CONTROL screen and set the System Type field to DCCH. See “Going to
the TIA/EIA-136 CALL CONTROL Screen” on page 37.
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Chapter 9, Troubleshooting
General Operating Reminders
Making Handoffs
To make a handoff from a DTC or AVC to another channel, you must first set the
Traffic Channel Assignment fields to indicate the channel you want the
mobile to go to. You must then select the Handoff field to initiate the handoff.
Making Accurate Power Measurements
The Average Power and TX Power (Avg) measurements should be periodically
calibrated during operation by selecting the Power Meter [Zero] field on the
DCCH CALL CONFIGURE screen.
The relative TX Power [dB] measurement needs to be re-calibrated any time new
firmware is installed and anytime the Cellular Adapter is removed and reinstalled.
See “Power Measurements” on page 130 See also “To Recalibrate Relative TX
Power” on page 287.
To Access the DCCH Call Processing Screens via HP-IB
Use the same command to access the CALL CONTROL screen that you would
use for AMPS operation: DISP ACNT. Then set the system type to DCCH with the
CALLP:CSYS ‘DCCH command.
To Display Measurements on the Call Control Screen
The Connect annunciator must be “lit” before measurements can be displayed on
the CALL CONTROL screen. To make measurements without having a
connected call, such as when operating the mobile in its test mode, go to the
DIGITAL MEASUREMENTS screen.
Recalibrate After Changing Cellular Adapters
Any time a Cellular Adapter is used with a different Test Set, the PER_CALD
calibration routine must be run to calibrate the two instruments. See “I/Q
Modulator and Relative TX Power Calibration” on page 287
Restoring Temporary Calibration Factors After a Firmware Upgrade
If you requested and received a firmware upgrade for your Test Set, you need to
restore the calibration factors used for three functions: TX Power measurements,
DC Current measurements, and DC FM offset.
To re-establish the TX Power zero point:
255
Troubleshooting
1. Disconnect any signals to the RF IN/OUT port on the Test Set.
2. Press the TX key to access the TX TEST screen.
3. Select the TX Pwr Zero field.
Chapter 9, Troubleshooting
General Operating Reminders
To re-establish the DC Current zero point:
1. Disconnect any cables to the DC CURRENT MEASUREMENT connections on the
Test Set’s rear panel.
2. Select AF ANL from the To Screen menu to go to the AF ANALYZER screen.
3. Select the DC Current [Zero] field.
To re-establish the DCFM zero point:
1.
2.
3.
4.
5.
Disconnect any signals to the Test Set’s front-panel AUDIO IN and RF IN/OUT ports.
Select RF GEN from the To Screen menu to go to the RF GENERATOR screen.
Set the AFGen1 To field to FM, 0.00 kHz.
Select the FM Coupling field to DC.
Select the DC FM Zero field.
Vocoder Selection
The Test Set does not contain its own vocoder, but it does support the use of the
VSELP and ACELP vocoders in mobiles. If you have a Test Set with a firmware
revision in the range of B.04.01 to B.05.00, you can only access the ACELP
selection using remote (HP-IB) operation (CALLP:DCCH:VOC ‘ACELP’). For
firmware version B.05.01 and above, you can select both vocoders manually or
via HP-IB.
Setting the RF Generator Frequency and Amplitude Outside of the Call Control
Screens When Using a PCS Interface
It is possible to use other screens and control fields outside of the Call Control
screens when using the Cellular Adapter with a PCS Interface. When operating on
another screen (such as the DUPLEX TEST screen) you should reset the
Amplitude after changing the RF Gen Freq to ensure that the RF amplitude is
accurate. This operation is not required when setting the channel number on the
Call Control screens.
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Chapter 9, Troubleshooting
Remote Operation Considerations and Recommendations
Remote Operation Considerations and Recommendations
The following items discuss operation under HP-IB control. For much more
information on programming in the Call Processing Subsystem, refer to the HP
8920B Programmer’s Guide HP P/N 08920-90222.
Loopback BER
When making loopback BER measurements on the DIGITAL
MEASUREMENTS screen, configure the DTC settings on the CALL CONTROL
screen prior to switching to the DIGITAL MEASUREMENTS screen.
To Prevent
Problems When
Changing the
System Type
Changing the System Type field (on the Call Control screen) from AMPS to
DCCH, and then immediately changing the Cntrl Chan settings, can cause the
Test Set to experience a non-recoverable firmware error (a “fatal” error requiring
you to turn the Test Set off and back on). This can be eliminated by either
querying the call processing status registers until the Active annunciator is lit
(recommended method) or by inserting a wait statement (of about 3 seconds) in
your program after the System Type is changed.
Temperature
Compensation
The CALL CONTROL or DCCH CALL CONFIGURE II must be displayed
before performing the temperature compensation using the CPR:DCCH:ZPOW
command.
Handoffs
After establishing a call on a DTC, wait at least 1 second before handing the call
off to another channel. This helps eliminate the error “Handoff message not
acknowledged by mobile”.
Releasing a Call
After establishing a call on a DTC, wait at least 1 second before releasing the call.
This helps eliminate the error “Release acknowledgment not
acknowledged by mobile”.
Going from the
When changing the Display field from Data to Meas, you can get the error
Data Display to the “Query UNTERMINATED” if you query a measurement too soon. A wait of .2
seconds after changing the Display setting should eliminate this problem.
Measurement
Display Mode
Troubleshooting
257
Chapter 9, Troubleshooting
Remote Operation Considerations and Recommendations
Changing from
ANALOG MEAS
Screen to CALL
CONTROL Screen
Measurements
When going from the ANALOG MEAS screen to the CALL CONTROL screen to
make a MAHO or Adjacent Channel Power measurement, you should wait
about.4 seconds (at cellular band frequencies) or .6 seconds (at PCS frequencies)
before querying the measurement.
Zeroing the Power
Meter With a PCS
Interface
The trigger mode retrigger must be set to “Repetitive” when zeroing the power
meter in the PCS Interface (TRIG:MODE:RETR REP).
Triggering to
Prevent Nonrecoverable
Firmware Errors
Remember to set the System Type on the CALL CONTROL screen to DCCH and
set the PCS Mode field on the CONFIGURE screen to On before attempting to
zero the meter using the CPR:DCCH:ZPOW command.
Occasionally you may encounter non-recoverable firmware errors resulting from
timing conflicts between your program and the Cellular Adapter. These conflicts
are often caused by using immediate trigger commands that do not allow the
Cellular Adapter enough time to complete a measurement before being queried.
To help prevent this problem, use the default continuous trigger state whenever
possible.
Reducing Wait
Wait statements are typically used to allow the Test System to finish the last
Statements in Your requested operation before sending another command. A much more efficient
programming method is to use the Call Processing Status Registers to control
Program
program execution. These registers monitor various call processing operations
and indicate when a condition exists; such as when a mobile has successfully
answered a page and the Test Set is in the Connect state. Using these registers, you
can write routines that cause the program to wait until a certain register indicates
an operating conditions exists, instead of entering some specific time period in
seconds. Refer to the HP 8920B Programmer’s Guide for more information on
using the Call Processing Status Registers.
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Chapter 9, Troubleshooting
Problems With or Without a PCS Interface Present
Problems With or Without a PCS Interface Present
This section deals with Test Systems that do not include a PCS Interface.
Mobile will not
camp on a Control
Channel.
❒ Verify that you have correctly connected the mobile to the Test System. See
“Connecting a Mobile” on page 38.
❒ Verify that you have set the System Type field (on the CALL CONTROL screen) to
DCCH.
❒ Verify that you have set the Cntrl Chan settings to match the capabilities of your
mobile.
❒ Verify that you have set the SID (System Identification number) to match the
programming of your mobile.
❒ Verify that the Amplitude field is set to a level that provides a Control Channel with
great enough amplitude for the mobile to camp on. This level may have to be adjusted
higher than expected if another strong Control Channel signal is being generated at a
different frequency near the mobile under test.
❒ Press the DUPLEX key to access the DUPLEX TEST screen. Verify that the
Input Port field is set to RF In, and that the Output Port field is set to RF OUT.
These settings assume you are connecting the mobile’s antenna port directly to the RF
IN/OUT port of the mobile. If the mobile’s receive and transmit connections have been
separated for testing, set these fields according to the configuration you are using.
Message “DTC msg (This assumes the mobile does register successfully.)
not acknowledged
❒ Verify that you have selected the correct vocoder setting for your mobile in the Voc:
by mobile” occurs
field (on the CALL CONTROL screen).
during attempt to ❒ Verify that the MS ID field is set to Phone Num and that the correct phone number for
page mobile.
the mobile is entered.
Mobile successfully ❒ The Traffic Chan Assignment settings are not compatible with your mobile. Be
sure to set the Type:, Band:, and Chan: fields for the traffic channel you want the
answers page but
mobile to go to when paged.
immediately drops
the call.
This message occurs because the Test Set’s squelch threshold is continually being
crossed by the digital signals from the mobile, overflowing an internal memory
buffer. This situation does not affect measurement ability or accuracy, and should
be ignored.
259
Troubleshooting
The message
“Squelch Interrupt
Overfull. Press
MEAS RESET” is
displayed.
Chapter 9, Troubleshooting
Problems With or Without a PCS Interface Present
The message
“Symbol clock is
weak: accuracy is
degraded” is
displayed.
The DIGITAL MEASUREMENTS screen expects to see a symbol clock to be
able to make measurements on a DTC. This message occurs when accessing this
screen while the mobile is on an AVC; a situation where a symbol clock is not
normally present.
If this message is displayed while measuring a DTC, increase the signal level of
the mobile until this message is no longer displayed.
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Chapter 9, Troubleshooting
Problems Specific to Using a PCS Interface
Problems Specific to Using a PCS Interface
This section deals with problems specific to using a PCS Interface.
Mobile will not
camp on a Control
Channel.
❒ Verify that you have correctly connected the PCS interface to the Test Set. See “PCS
Interface Connections” on page 288.
❒ Verify that you have correctly connected the mobile to the Test System. See
“Connecting a Mobile” on page 38.
❒ Verify that the PCS Interface is turned on (the POWER LED is on).
❒ Verify that you have set the PCS Mode field (on the CONFIGURE screen) to On
❒ Verify that you have set the MS Capab field (on the DCCH CALL CONFIGURE II
screen) to match the type of mobile you are using.
• If the mobile is capable of operating in the US PCS band, set this field to
US PCS (even if you are testing it at Cellular band frequencies).
• If the mobile is not PCS-capable, set this field to Cellular.
❒ Press the DUPLEX key to access the DUPLEX TEST screen. Verify that the
Input Port field is set to Ant, and that the Output Port field is set to Dupl.
These settings are needed to correctly work with the PCS Interface.
Message “Selection This message is displayed when trying to select a System Type on the Call
Control screen that is not supported when using the PCS Interface, such as TACS
not supported in
PCS mode” occurs. or J-TACS.
The PCS Interface
is on but the PCS
Mode field does not
appear on the
CONFIGURE
screen.
The PCS Interface must be connected properly to the Test Set, and be turned on
before the Test Set, for the Test Set to control it.
1. Verify that the serial cable is connected between Test Set’s Serial Port and the PCS
Interface’s Serial Port.
2. Verify that the HP-IB/SER switch on the PCS Interface is set to the SER position.
3. Turn the Test Set and the PCS Interface off.
4. Turn the PCS Interface on and wait until it beeps twice. The two beeps indicate that the
PCS Interface is set to serial control.
5. Turn the Test Set on.
6. Press SHIFT, DUPLEX(CONFIG) to access the CONFIGURATION screen.
7. Select the PCS Mode field. The field will remain highlighted for several seconds as the
PCS Interface is switched into the RF path of the Test System. When the field is no
longer highlighted, it will indicate that the PCS Mode is On.
Troubleshooting
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Messages
Messages
The messages included below are those specific to the Cellular Adapter. For Test
Set messages refer to the HP 8920 Series Test Set User’s Guide.
Alert attempted while not in Maintenance or Connect state.
Amb Lite Communication FAILED.
Amb Lite Communication OK.
Attempt to start DTC Loopback while not Active.
Attempt to start DTC Loopback with an Analog Voice Channel.
Call Processing Reset to Control Channel.
Cannot zero the power meter while in connected state.
Convergence error: readings may be invalid.
The DCCH has been aborted.
The DTC has been aborted.
FACCH/SACCH Buffer overflow
Handoff attempted while not in Connect state.
IPC Port Error.
Measurements available only in Connect State or Dig Meas Screen
The mobile didn’t acknowledge the change power order.
Mobile failed to respond to the Page message.
Mobile failed to send the Registration message.
No Reverse DTC is being detected, loss of Traffic Channel.
Order attempted while not in Connect state.
Order attempted while not on Control Channel.
Origination attempted while not in Active state.
Origination in progress.
Overdriven: accuracy may be degraded.
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Messages
Page attempted while not in Active state.
Registration attempted while not in Active state.
The release acknowledgment was not received from mobile.
Release attempted while not in Connect state.
RF Power Loss indicates loss of Voice Channel.
Signal weak: accuracy may be degraded.
Symbol clk weak (all zeros?): accuracy degraded.
Sync error not found: accuracy may be degraded.
Sync word timing error: readings may be invalid.
Time-out occurred while attempting to access Mobile.
Time-out occurred while attempting to alert Mobile.
Time-out occurred while attempting to page Mobile.
Time-out occurred while attempting to register Mobile.
Time-out occurred while in Maintenance state.
Time-out occurred while waiting for answer from Mobile.
Troubleshooting
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Messages
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TIA/EIAa TIA/EIA-136 Basics
10
TIA/EIA-136 Basics
This chapter briefly describes the TIA/EIA-136 system, and its Digital Control
Channel (DCCH).
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What is TIA/EIA-136?
What is TIA/EIA-136?
TIA/EIA-136 is a mobile communications system standard which extends the
functions of the dual-mode system standard TIA/EIA-627. TIA/EIA-627 is also
known as NADC/TDMA (North American Dual Mode Cellular/Time Division
Multiple Access).
NADC/TDMA is a dual mode, full duplex cellular communications system in
which each voice channel can be defined by both a frequency and a time slot. In
earlier cellular communication systems the voice channel was defined only by a
frequency. By sharing one transmission frequency, more calls can be transmitted.
The dual mode system uses a digital traffic channel (DTC) or an analog voice
channel (AVC).The dual mode system uses only an Analog Control channel to
control transmissions on the voice and traffic channels. TIA/EIA-136 has the
DTC, AVC, ACC, and adds a Digital Control Channel (DCCH).
TIA/EIA-136 expands the capability of the TIA/EIA-627 system to include:
•
•
•
•
•
Sleep mode for decreased battery usage during non-talking time
Public, private, and semiprivate cells such as picocells in office buildings and personal
base stations
Short Message Service (SMS) for both point-to-point and broadcast information
Greatly improved security (using DCCH and authentication)
Improved voice quality
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Basic Features of
TIA/EIA-136
These features apply to the TIA/EIA-136 system as specified in the TIA/EIA
system standards.
-Feature
Description
Frequency Range
Reverse (mobile transmits): 824 to 849 MHz
Forward (base transmits): 869 to 894 MHz
1900 MHz hyperband
recommended Frequency
Range
Reverse: 1850 to 1910 MHz
Forward: 1930 to 1990 MHz
Channel spacing
30 kHz
Time slots per channel
6
Users per voice/traffic channel
3 (full rate)
(double and triple rates are optional)
Modulation
Digital: π/4 DQPSK, Nyquist filter factor
= 0.35
Analog: FM
Data structure
TDMA
Speech coding
VSELP: 7950 bps, ACELP 7400 bps
Modulation data rate
24.3 kilo symbols per second
(1 symbol = 2 bits)
TIA/EIA standards
TIA/EIA-136
IS-137 for mobile stations
IS-138 for base stations
RX/TX frequency spacing
Cellular: 45 MHz, PCS:80.04 MHz
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What is TIA/EIA-136?
Chapter 10, TIA/EIA-136 Basics
TIA/EIA-136 transceiver
TIA/EIA-136 transceiver
The Transceiver
Control Block
The block diagram for a typical TIA/EIA-136 transceiver (Figure 77 on page 270)
is nearly the same as that of an TIA/EIA-627 TDMA transceiver. The primary
difference between the two systems is in the control channel. All control channel
operations occur in the Transceiver Control Block. This block controls both the
control channels and the complete operation of the transceiver. The control block
for a TIA/EIA-136 transceiver must be capable of communicating in either analog
or digital control channels.
Modulation
Methods
π/4 DQPSK is the modulation method for the digital channels. Frequency
Modulation (FM) or Frequency Shift Keying (FSK) are the modulation methods
used for the analog channels.
FM CIRCUITS CAN
OFTEN OCCUR IN A
DIGITAL SIGNAL
PROCESSOR (DSP)
The FM can occur digitally within a mobile station. In Figure 77 on page 270, the FM path
is shown separately. This is done in order to show that TIA/EIA-136 mobiles have both an
FM path and a
π/4 DQPSK modulation path.
The Control
Channels
TIA/EIA-136 has both digital (DCCH) and analog (ACC) control channels. The
ACC controls the analog transmissions and guarantees backwards compatibility
with systems such as AMPS and TIA/EIA-627. The DCCH controls the digital
transmissions and enables the specialized features of TIA/EIA-136.
A transceiver on an ACC has an Idle mode. During this state, the transceiver waits
for messages from the base station, or it can originate a call. A transceiver on a
DCCH has a similar state: Camping. The major transactions which can be
processed during the Idle and Camping states are listed in the following table.
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Table 6
Major Transactions Which Can Be Processed in Idle or Camping Modes
Transactions that can be processed
during Idle on an ACC
Transactions that can be processed
during Camping on a DCCH
Origination
Origination
Respond to pages
Respond to pages
Registration
Registration
Respond to overhead message
SSD update
Respond to orders
User group call
Switch to a DCCH
Originate a point-to-point teleservice
Terminate a point-to-point teleservice
Authentication
Switch to an ACC
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TIA/EIA-136 transceiver
Chapter 10, TIA/EIA-136 Basics
TIA/EIA-136 transceiver
Sp
ee
ch
In
Sp
ee
ch
O
ut
TIA/EIA-136
Transceiver Block
Diagram
Reverse
Reverse
2:1
Compressor
Speech
Coder
Limiter
Channel
Encoder
FM
Modulator
Nyquist
Filter
Reverse
π/4
DQPSK
Modulator
Limit
Filter
Filter
RF
Amp
Antenna
Reverse
Transmit
Transceiver
Control Block
Local
Oscillator
Forward
Forward
Speech
Decoder
Channel
Decoder
2:1 Expander
Nyquist
Filter
I/Q
Demodulator
Receive
FM Detector
Tuned
RF Section
Forward
Figure 77
Forward
a TIA/EIA-136 Dual Mode Transceiver
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Basic Functions of the DCCH in TIA/EIA-136
The process of making a TIA/EIA-136 call is essentially the same as making a
TIA/EIA-627 TDMA call. The primary difference comes in the control channel
functions.
The following sections describe the functions of the Digital Control Channel
(DCCH) used in TIA/EIA-136. Since analog functions have been in use in AMPS
and TIA/EIA-627 systems, these should already be familiar to you and will not be
discussed here.
Functions used in TIA/EIA-136 systems are listed below.
1. Power On and Initialization
2. DCCH Scanning and Locking
3. Call Origination
4. Call Release
5. Time Alignment and Other Orders
6. Registration and Periodic Registration
7. Paging
8. Handoffs and Mobile Assisted Handoff (MAHO)
9. Short Message Service (SMS)
10. Authentication
11. Non-public System Selection
12. Mobile Assisted Channel Allocation(MACA)
13. Dual Tone Multi-Frequency Signaling (DTMF)
Power On and
Initialization
After the mobile powers up, it initializes. It must then determine whether to look
for an analog or a Digital Control Channel. Once that decision is made, there are
more tasks to be performed before the mobile reaches a state in which a call can
be made. The table below identifies these procedures for both the ACC and
DCCH.
After initialization, the mobile enters the idle mode and stays there whenever it is
not actively involved in messaging or processing a telephone call. Idle mode for a
TIA/EIA-136 mobile is called Idle when monitoring the ACCH and Camping for
the DCCH.
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The basic steps in initialization are described below.
Power On
Select preferred system (A or B)
Mobile chooses whether to search for a DCCH or an ACC
DCCH
ACC
DCCH Scanning and Locking
Start Initialization Task
Select Digital Control Channel
Scan Primary Set of Dedicated
Control Channels
Determine Signal Strength
Aspects
Update Digital Overhead
Information
Determine Service Aspects
Primary Paging Channel
Selection
Verify Overhead Channel
Information
Enter DCCH Camping state
Enter Idle state
DCCH
DCCH Scanning and Locking
Initialization Tasks When checking control channels for the strongest one, a mobile may scan all
channels. However, in the TIA/EIA-136 system, the DCCHs are scanned in
blocks. This is done to shorten the time required to find a control channel.
The entire set of channels for a system is divided into 16 blocks, called probability
blocks. Each block is assigned a relative probability for the likelihood of
providing DCCH support. Service providers assign these probability blocks.
The mobile station will typically store the prioritized list of probability blocks for
its home system. The mobile will search each block’s channels in ascending order.
After communication has been established with a service provider, a ‘neighbor
list’ may be provided. This list contains information about the DCCHs that are
available in neighboring cells. This list is used by the mobile when searching
probability blocks for a new DCCH.
The candidate DCCH is selected in this step.
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Determine Signal Strength Aspects:
The mobile must evaluate the candidate DCCH for the following conditions:
•
•
received signal strength is sufficient
the maximum power of the mobile meets the system’s allowed maximum power criteria
Determine Service Aspects:
The mobile must evaluate the candidate DCCH for the following conditions:
•
•
•
if it is a DCCH allocated to the mobile according to its PAID (Paging Channel
Allocation ID)
if the mobile is barred from using that system
if the DCCH has the Network Type to which the mobile subscribes
Enter DCCH Camping State:
The DCCH Camping State is analogous to the Analog Control Channel’s Idle
state. From this state all orders can be processed. Additionally, if the mobile
determines it is appropriate to search for a new control channel (either ACC or
DCCH), it can return to the Control Channel Scanning and Locking State.
Call Origination
When a user with a mobile tries to call someone, the mobile makes a call
origination. A mobile can be using either a Digital or Analog Control Channel,
and it can originate a call to use either a DTC or AVC.
When another party makes a call to the mobile, the base sends the page message.
The basic steps in mobile initiated call origination are as follows.
1.
2.
3.
4.
5.
6.
Mobile begins in Camping Mode or Idle mode
Mobile creates and sends an Origination message
Mobile receives a Channel Designation (either DTC or AVC)
Mobile invokes Registration Update procedure
Mobile tunes to the traffic channel and starts transmitting
Mobile enters Conversation Task
There are four types of call originations. These are listed below, and the specific
steps for each type are described in Table 7, “Call Origination Steps,” on
page 274.
1.
2.
3.
4.
Originate from DCCH to DTC
Originate from DCCH to AVC
Originate from ACC to DTC
Originate from ACC to AVC
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Table 7
1
Call Origination Steps
Begin In
Camping or
Idle State
2
Create and
Send
Origination
Message
3
Receive
Channel
Designation
4
Invoke
Registration
Update
procedure
5
Tune to traffic
channel and
start
transmitting
DCCH Camping State
1 Originate on
DTC
Origination message contains SCM and
Service Code
Receive DTC
designation
Receive AVC
designation
3 Originate on
DTC
4 Originate on
AVC
Word A sent, contains SCM and MIN1
Receive Control
Message Word 1
(DVCC)
Receive Control
Message Word 1
(SAT)
Receive Digital
Assignment Word
Receive Digital
Assignment Word
Invoke
Registration
Update
Invoke
Autonomous
Registration
Update
Invoke
Registration
Update
Invoke
Autonomous
Registration
Update
Mobile tunes to
DTC, sets transmit
and receive rates,
time slot
Mobile tunes to
voice channel, sets
transmitter power
level, and begins
transmitting SAT
Mobile tunes to
DTC, sets transmit
and receive rates,
time slot
Mobile tunes to
voice channel, sets
transmitter power
level, and begins
transmitting SAT
Transmits either
normal or
shortened bursts
until timing is
aligned
6
2 Originate on
AVC
ACC Idle State
Enter
Conversation
Task
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Begin Conversation
Always transmits
shortened bursts
until timing is
aligned
Begin Conversation
Camping Mode
This is the mode in which the mobile waits for orders, or originates a call. This is
analogous to Idle mode in an analog system.
Origination Message
The mobile transmits an Origination Message after confirming that the channel is
accessible by monitoring the Overload control.The Origination Message is
transmitted on the RACH (Random Access Channel). This message contains
information such as that listed below.
•
•
•
•
called party number
whether it is an emergency call or not
voice mode
data mode
Channel Designation
This assigns the RF channel of the traffic (or voice) channel. Some information
included in this message is listed below.
•
•
•
•
•
traffic channel number
voice mode (defaults to VSELP voice coder and No Voice privacy)
DMAC (Digital Mobile Attenuation Code) assigns mobile power level
Assigned Time Slot (ATS)
time alignment
Registration Update
The mobile receives and updates the SID (System Identification) and the
registration period parameters.
Confirm Initial Traffic Channel
The mobile tunes to the assigned RF channel, sets DVCC, DMAC, time slot
assignment, and Base Station Protocol Version status.
Conversation Mode
The user can begin the conversation.
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Call Release
During conversation mode, either party can terminate the call. On a mobile, this
can be done by either pressing ‘END’ or by merely turning power off. When the
mobile user terminates the call, the base station smoothly disconnects from the
mobile.
Mobile releases call
1. Mobile sends a release message
2. Mobile terminates Conversation mode
3. Base station sends acknowledge message
4. Mobile enters Serving System Determination task
Base releases call
1. Base sends a release message
2. Mobile sends an acknowledge message
3. Mobile terminates Conversation mode
4. Base station sends acknowledge message
5. Mobile enters Serving System Determination task
Time Alignment
and Other Orders
There are many features of TIA/EIA-136 that can be used to maintain or update
information within the system. Some of these are described below.
•
•
•
•
Registration and
Periodic
Registration
Time Alignment. Once on a DTC, the base station can adjust the time alignment of the
mobile’s transmissions. This modifies the timing of the data within the mobile’s
assigned time slot.
Message Waiting Indicator. The base can notify the mobile and indicate the number of
messages that are waiting.
Calling Number Identification. This is sent from the base to the mobile, indicating the
number of the phone which is trying to contact the mobile.
Distinctive Ring. The base can define the type of sound the mobile produces when it is
called. The base can choose medium, high, or low pitch. It can also select the period of
the signal. This can be several combinations of long, short, PBX, or PIP (very short).
Registration is the process by which the mobile identifies itself to the base.
Periodic registration is a way to remind the base station that the mobile is still in
the area. It is used when the mobile wants to conserve battery power.
The basic procedure for registration is described below.
1. Base requests the mobile to register. A parameter on the DCCH broadcast message
identifies how the mobile is to respond. Typically the base station tells the mobile
station to register and include the Capability Report and the Serial Number messages.
2. Mobile responds with a registration message which corresponds to the required
parameters.
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Registration for TIA/EIA-136 differs under certain conditions. In these
conditions, the mobile replies with a registration that contains a message specific
to the condition. Some of the conditions are listed below.
•
•
•
•
•
If the mobile has just powered down, the registration will contain a message with a
power down indication. The mobile then enters the Power Down mode (Null mode).
If the mobile has just powered up, the message contains a Power Up indication.
If the SID value does not match the mobile’s stored SID value, the mobile sends a
message with a New System indication.
If the mobile needs to De-register, then the message sent contains a De-registration
indicator.
If message decryption is enabled, the mobile will send the Message Encryption Mode
information with any registration method that is sent.
Periodic Registration
To greatly improve battery conservation, TIA/EIA-136 has the capability to allow
the mobile to enter a sleep mode, where the mobile is not listening to any
messages sent by the base station. To maintain contact with the base, the mobile
must periodically register.
Periodic registration is accomplished by the following steps.
1. Mobile station starts a timer (PER_TMR) based on timing values (REGID and
REGID_PER) sent from the base station.
2. The base station continuously updates REGID as a system clock for registrations.
3. Mobile internally updates the value NEXTREG. Its value is also based on REGID and
REGID_PER.
4. Mobile, whenever PER_TMR expires, wakes up and looks for a new REGID
parameters message. It receives the latest value of REGID.
5. The mobile checks to find out if the value of REGID is greater than the value of
NEXTREG.
6. If REGID is greater than NEXTREG, then mobile will start the registration.
Some of the data used in registration are described below.
REG Period (REGPER): the registration periodicity counted in number of 94
superframes. A single count of REGPER is equal to 94 superframes. Values of
REGPER are coded from 0 to 511 indicating 94 to 48128 superframes
(approximately 1 minute to 8.5 hours).
REGID parameters: contains the REGID and the REGID_PER
REGID: the system clock, ranging from 0 to 1048575.
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REGID_PER: the number of superframes over which REGID is incremented.
Ranges from 0 to 15 superframes. The value 0 indicates that REGID is not
incremented.
A superframe is 16 TDMA frames = about 640 milliseconds.
Paging
Paging occurs primarily for the base to establish a call with the mobile. However,
with TIA/EIA-136, there are some other types of information the mobile must
respond to.
This is the procedure for responding to a set of specialized page messages.
1. The mobile receives a message indicating a page.
2. The mobile responds with a message appropriate to the type of page sent.
3. The mobile enters the next state appropriate to the type of page.
Some of the pages that the mobile must be able to respond to are listed below.
•
•
•
•
Hard Page: the mobile will respond and enter the Waiting for Order state.
Page with User Group indication: begin User Group procedures.
Audit Order indicating User Group: if the mobile is part of the proper user group, the
mobile will confirm audit order, and re-register if necessary.
Confirm audit message and re-register if necessary.
Example: Mobile receives a Hard Page which results in call origination
1. The mobile receives a message indicating a Hard Page.
2. The mobile responds with a Page Response message with a Service Code that indicates
the desired service. Service Code indicates speech type (analog, digital, or both), fax,
or data.
3. The mobile enters the Waiting for Order state.
4. Base station sends a DTC Designation, and the call establishment continues.
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Handoffs and
Mobile Assisted
Handoff (MAHO)
There are several types of handoffs possible within TIA/EIA-136. These are listed
below.
•
•
•
•
DTC to DTC
DTC to AVC
AVC to DTC
AVC to AVC
Basic steps in all handoffs
1.
2.
3.
4.
5.
6.
Start in Conversation task
Base station sends a handoff message
Mobile acknowledges
Mobile tunes to new channel and starts transmitting
Timing is aligned
End Handoff by re-entering Conversation mode
Table 8
Handoff
Direction
DTC to DTC
Start
Send Handoff
message(s)
DTC to AVC
AVC to DTC
AVC to AVC
Start in Conversation mode
Contains new
channel,
timeslot, DVCC
Contains new
channel
Word 1:
message type,
DVCC
Word 1:
message type,
AVC
Word 2: new
channel, DMAC
Word 2: new
channel, DMAC
Acknowledge
Acknowledge
handoff
message
Acknowledge
handoff
message
Send ST for 50
msec.
Send ST for 50
msec.
Transmit
Normal or
shortened bursts
SAT
Shortened
bursts
SAT
Time
alignment
Typically set to
Standard Offset
Reference
(SOR)
End Handoff
Typically set to
Standard Offset
Reference
(SOR)
Enter Conversation mode
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Mobile Assisted Handoff (MAHO)
MAHO is actually a set of measurements, not a handoff. The base station requires
the mobile to provide RF channel signal quality information to its serving base
station. The base can then choose a specific channel for the handoff. If the mobile
provides information on the present RF channel, it sends RSSI and BER
information. If the mobile provides information on any other channel, it sends
only the RSSI information.
Procedure for a Mobile Assisted Handoff
1. Start in Conversation task
2. Mobile station receives and acknowledges a Measurements message. This message
indicates the channels which the mobile is required to measure.
3. Mobile reports measurements back to base station.
4. Base orders handoff.
5. Handoff proceeds according to its type (DTC to DTC or DTC to AVC).
While the mobile is reporting measurements to the base, the base can choose a channel to
MAHO
MEASUREMENTS DO handoff to. It is not necessary that the mobile stop measurements before this handoff ocNOT HAVE TO STOP curs. The base can order the mobile to stop measurements at a later time.
BEFORE HANDOFF
Short Message
Service (SMS)
Short Message Service (SMS) is a service available on the DTC and the DCCH. It
allows the mobile and base to exchange short messages, typically concerning the
operation of the cellular system.
The SMS can be initiated by either the mobile user or the base station. The base
station either transmits a message from another user, or sends a message to control
the features of the SMS itself.
The procedure for SMS consists of sending an SMS message, then receiving an
acknowledgment. The acknowledgment consists of a Delivery Ack, if the
message has been delivered, or a Manual Ack, if the user has responded to the
message.
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Authentication
Authentication is the same for both the ACC and the DCCH. It consists of the
base and mobile stations exchanging data. Before the mobile may access the
system, this data is verified.
Unique Challenge-Response Procedure
This is the basic procedure of Authentication. The procedure is described below.
1.
2.
3.
4.
5.
6.
7.
Base generates a 24-bit pattern called RANDU.
Base sends RANDU to the mobile in the Unique Challenge Order message.
Mobile receives RANDU.
Mobile calculates AUTHU using the RANDU, MIN1, MIN2, ESN and SSD-A.
Mobile transmits AUTHU to the base.
Base calculates its own AUTHU and compares it to the received AUTHU.
If the two values of AUTHU are the same, the mobile is accepted into the system.
Data Used in Authentication
Several different information elements are used in authentication. The primary
ones are listed below.
•
•
•
•
•
ESN
MIN
SSD
RAND, the random challenge data
COUNTs-p, the Call History Parameter
ESN: Electronic Serial Number. Permanently stored in the mobile.
MIN: Mobile Identification Number. Consists of two parts, MIN1(24 bits) and
MIN2(8 bits).
SSD: Shared Secret Data. A 128-bit pattern, partitioned into two 64-bit patterns,
SSD-A and SSD-B. SSD-A is used for Authentication, and SSD-B is used for
voice privacy and message confidentiality.
RAND: Random challenge memory. A 32-bit value stored in the mobile.
COUNTs-p: call history parameter. A modulo-64 count stored in the mobile.
SSD Update Procedure
The base can order the mobile to update its Shared Secret Data. This is done to
enhance security.
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Chapter 10, TIA/EIA-136 Basics
Basic Functions of the DCCH in TIA/EIA-136
Chapter 10, TIA/EIA-136 Basics
Basic Functions of the DCCH in TIA/EIA-136
The procedure to update the SSD is listed below.
1. Base sends an SSD Update order containing the RANDSSD.
2. Mobile calculates a value SSD-A_NEW using RANDSSD, ESN, and the A-key.
3. Mobile generates a random number RANDBS and sends it to the base.
4. Mobile calculates AUTHBS using RANDBS and SSD-A_NEW.
5. Base calculates its own SSD-A_NEW.
6. Base calculates its own AUTHBS using RANDBS and SSD-A_NEW.
7. Base sends its AUTHBS to the mobile.
8. Mobile compares its AUTHBS with the one sent from the base.
9. If both AUTHBS values match, the SSD update is successful.
10. Mobile sends a confirmation to the base.
Data required to update SSD is listed below.
1.
2.
3.
4.
ESN
MIN1
RANDSSD: a 56-bit random number sent by the base
A-key: a 64-bit number permanently stored in the mobile
Non-public System Private and residential systems can provide services using the TIA/EIA-136
standard. These systems are distinguished from public TIA/EIA-136 systems by
Selection
the network type and the system identification number.
The network types are Public, Private, and Residential.
Every system has an SID. In addition to SIDs, private and residential systems also
have Private System IDentifications (PSIDs). Residential systems also have
Residential System IDentifications (RSIDs).
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Mobile Assisted
The mobile can assist the base in selecting control channels by the MACA
procedure. This procedure measures and reports signal quality for either the
Channel
Allocation(MACA) current channel or multiple channels. There are two types of measurements: long
term and short term.
Long term measures WER, BER, and paging frame received signal strength. It
measures only on the current control channel.
Short term measures short term received signal strength. It can measure up to 16
control channels.
Dual Tone MultiFrequency
Signaling (DTMF)
This is an option built into TIA/EIA-136. This enables testing of the numeric
keypad (digits 0-9, and * and #). Each key is identified by two signals. These
signals are transmitted together whenever the key is pressed. The keys and their
respective frequencies are identified below.
Table 9
Label of Key
1
Assigned Frequencies (Hz)
697
1209
2
ABC
697
1336
3
DEF
697
1477
4
GHI
770
1209
5
JKL
770
1336
6
MNO
770
1477
7
PRS
852
1209
8
TUV
852
1336
9
WXY
852
1477
941
1209
941
1336
941
1477
*
0
#
OPER
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11
Installing the Cellular Adapter
Installing the Cellular Adapter
This chapter shows how the Cellular Adapter is connected to the HP 8920 Test
Set. Connections for the PCS Interface are also provided.
285
Chapter 11, Installing the Cellular Adapter
Connecting the Cellular Adapter to the HP 8920 Series Test Set
Connecting the Cellular Adapter to the HP 8920 Series Test Set
This preliminary Test Set Cellular Adapter will work only with an HP 8920B
series Test Set with correct firmware. If you received firmware to upgrade your
Test Set, follow the instructions included with the firmware.
See also the HP 83206A Assembly Level Repair Manual.
If you need to make the connections, see Figure 78.
EXT IF IN
Figure 78
DET OUT
Connection Diagram for the Cellular Adapter
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Chapter 11, Installing the Cellular Adapter
Connecting the Cellular Adapter to the HP 8920 Series Test Set
drifting.
Calibration Procedure
1. Press the TEST key to access the TEST (Main Menu) screen.
2. Under Select Procedure Location: choose ROM.
3. Under Select Procedure Filename: choose PER_CALD.
4. Press the k1 key to start the calibration program.
5. Follow the directions displayed on the screen.
a. Select and run the I/Q Modulator routine until it indicates that it has calibrated
at all frequencies; this will take several minutes. (Be sure to connect a short cable
from the DUPLEX OUT port to the ANT IN port before starting.)
b. Select and run the Tx Power routine. (Be sure to connect a short cable from the
DUPLEX OUT port to the RF IN/OUT port as instructed.)
6. When both calibration routines have been run, turn the Test Set off and back on to
enable the new calibration settings.
To Recalibrate Relative Repeat the previous procedure, skipping step 5a. Be sure to turn the power off and
back on to use the new power calibration settings before making more relative TX
TX Power
Power measurements.
287
Installing the Cellular Adapter
I/Q Modulator and The I/Q Modulator and TX Power calibration routines must be run any time a
Relative TX Power Cellular Adapter is disconnected and re-attached to a Test Set. TX Power should
also be recalibrated any time you suspect the relative TX Power readings are
Calibration
Chapter 11, Installing the Cellular Adapter
PCS Interface Connections
PCS Interface Connections
The PCS Interface is used with the Cellular Adapter and Test Set to test US PCS
mobiles (1700 MHz to 1900 MHz). You can also test cellular band (850 MHz)
mobiles through the interface. The interface is controlled entirely through a serial
cable connection to the Test Set.
The PCS Interface is shipped with all cables needed to connect it to the Test Set.
Also shipped with the interface is a memory card containing a System
Connectivity program to verify all connections. This software should be loaded
and run before using the interface.
The following diagrams are for reference only, and do not show all of the rearpanel connections between the Test Set and the Cellular Adapter (see Figure 78 on
page 286). Complete instructions for connecting the PCS Interface to the Test Set
and running the System Connectivity software are included in the PCS Interface’s
Operating Manual (HP P/N 83236-90100).
REF IN
10 MHz REF
OUTPUT
DUPLEX OUT
BNC Tee
ANT IN
REF IN
To DUPLEX OUT
To ANT IN
1 0
A0 (LSB)
.
.
.
A5 (MSB)
HP-IB/Ser
Serial Port Connections
The HP-IB/Ser switch must be set to Ser.
Figure 79
PCS Interface Connections
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Chapter 11, Installing the Cellular Adapter
PCS Interface Connections
use a specific RJ-11 cable that provides separate RJ-11 jacks for each port.
HP 8920
Rear Panel
RJ11
83236--61061
08921-61031
Port 9
Port 10
RJ11
Com 1 DB9
Serial Connector
Serial Printer
08921-61038
Serial
Port
289
Installing the Cellular Adapter
Connecting a
The Serial Port of the test set actually contains two separate serial connections;
Printer to the Serial designated Port 9 and Port 10. Port 10 is used to control the PCS Interface. You
can connect a serial printer to Port 9 to print screen images. To do this, you must
Port
Chapter 11, Installing the Cellular Adapter
PCS Interface Connections
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Glossary
ACC Analog Control Channel. Controls
the analog transmissions of a cellular phone
system.
Access The Test Set’s state in which the it
is communicating with the transceiver
under test.
acknowledgment The process by which
one station sends a response message to
another station.
ACELP Algebraic code excited linear
predictive. An encoding method for voice.
adjacent channel power The measured
power on some number of higher and lower
channels adjacent to the selected channel.
analog parameters Parameters of the
analog voice channel.
analog voice channel A channel on which
a voice conversation occurs and on which
brief digital message may be sent from a
base station to a mobile station or from a
mobile station to a base station.
ANLG MEAS The screen for analog
measurements.
annunciator A screen graphic which
identifies the call processing state of the
Test Set. When the annunciator is ’lit’, that
is the state of the Test Set. An example is
shown in the following diagram.
A-key A 64-bit number permanently
stored in the mobile, used in authentication.
analog call processing A firmware
portion of the Test Set which controls the
messages required to setup and maintain a
call in the analog portion of a cellular phone
system.
analog color code An analog signal
transmitted by a base station on an analog
voice channel and used to detect capture of
a mobile station by an interfering base
station or the capture of a base station by an
interfering mobile station.
A ’lit’
annunciator
Active
Register
Page
Access
Connect
Arm A Test Set command which instructs
the Test Set to get ready to measure. The
next available data or signal will be
measured.
authentication A procedure used by base
stations to validate a mobile stations’s
identity.
291
Glossary
Active The Test Set’s state in which it is
emulating a base station. In the ACTIVE
state, the Test Set is ready to communicate
with the transceiver.
analog control channel A channel used
for the transmission of digital control
information from a base station to a mobile
station or from a mobile station to a base
station.
Glossary
autonomous registration The process by
which the mobile registers without being
instructed to do so by the base.
cellular adapter A self-contained module
that attaches to the Test Set. It typically tests
a specific system or provides a special
function to the Test Set.
AVC Analog Voice Channel
average power The RMS power.
base station A station in the Domestic
Public Cellular Radio Telecommunications
Service, other than a mobile station, used
for communicating with the mobile.
A fixed-location transceiver in a
communications network. The land station
in a cellular or PCS network carrying on a
radio communication with mobile units.
BER Bit Error Rate. The number of
erroneous bits received compared to the
total number of bits received during the
observation period.
BS Base station.
CALL CNFG The configuration screen
for setting up call processing.
CALL CNTL The primary control screen
for call processing functions.
call processing The portion of the Test Set
that controls cellular call origination,
paging, and messaging.
calling number The number that is calling
the mobile.
camping The state on a DCCH in which
the mobile is available to originate a call or
accept orders. Analogous to Idle mode on
an ACC.
292
channel designation the message in which
a voice or traffic channel is assigned.
Choices menu A menu on the display
which presents a list of choices.
Connect The Test Set’s state in which the
Test Set has established a communications
link (for example, a call) to the transceiver
under test.
control channel A frequency channel
which is used to send control messages
between the base and the mobile.
COUNTs-p The Call History Parameter,
stored in the mobile. Used in authentication.
country code A transmitted code which
identifies the country of the mobile.
Derived from CCITT Recommendation
E.212.
CRC Cyclic Redundancy Check
DAMPS Another name for TDMA
following the TIA/EIA-627 specification.
DCCH Digital Control Channel. Controls
the digital transmissions of a cellular phone
system.
DCCH subsystem The firmware
subsystem which controls call processing
for DCCH specification TIA/EIA-136.
Glossary
DIG MEAS The screen for digital
measurements primarily in the TIA test
mode.
DUT Device Under Test. The transceiver
that is to be tested.
digital call processing the portion of the
Test Set which control the messages
required to setup and maintain a call in the
digital portion of a cellular phone system.
DVCC Digital Verification Color Code.
An eight-bit signal sent by the base to the
mobile. Used to generate the Coded Digital
Verification Color Code (CDVCC), which
indicates that the correct data is being
decoded.
Disarm Selecting this command stops the
measurement process. See “Arm”.
DMAC Digital Mobile Attenuation Code.
downbanding A special set of frequencies
below the normal cellular band.
droop The difference between the level of
the first symbol and the level of the last
symbol captured by the analyzer.
dropped call A call is dropped when the
communication between a mobile and the
base is abruptly terminated.
DSP Digital Signal Processor. A processor
used in the Test Set.
DTC Digital Traffic Channel
DTMF Dual Tone Multiple Frequency
signaling. Each key of the numeric keypad
on a cellular phone is identified by two
signals. These signals are transmitted when
the key is pressed.
ESN Electronic Serial Number.
EVM (EVM1, EVM10) Error Vector
Magnitude. The magnitude of the error
vector which connects the ideal signal
vector to the signal vector measured at the
point of detection. EVM is the RMS value,
while Peak EVM is the absolute value of the
peak EVM measured. EVM10 is the
normalized measurement of the first 10
symbols of a burst, averaged over 10 bursts.
FACCH Fast Associated Control Channel.
A reverse channel controlling the Reverse
Digital Traffic Channel. See also SACCH.
field A selectable location in the screen.
FSK Frequency Shift Keying.
full-rate As described in TDMA systems,
the transmission rate at which one call uses
only one of the six available slots.
GPIB General purpose interface bus. An
implementation of IEEE-488.2.
293
Glossary
DQPSK Differential Quadrature Phase
Shift Keying. A modulation system in
which the signal to be modulated is
digitized, and then transmitted on a carrier
with a phase corresponding to the digital
signal. The actual phase transmitted is
relative to the last phase transmitted.
emulate To imitate. The Test System
emulates a base station by performing tasks
equivalent to those performed by the actual
base station.
Glossary
half-rate As described in TDMA systems,
the transmission rate at which one call uses
two of the six available slots.
handoff The process of passing control of
a mobile from one base to another.
host firmware Firmware located in the
Test Set (the host).
HP-IB See GPIB.
Idle The state on an ACC in which the
mobile is available to originate a call or
accept orders. Analogous to Camping on a
DCCH.
IMSI International Mobile Station
Identity. A mobile identification format as
specified by CCITT E.212.
initialization The process by which a
mobile gets to a state in which it can
originate a call or accept orders.
IS-54B This standard has been finalized as
TIA/EIA-627.
IS-136 This standard has been finalized as
TIA/EIA-136.
Layer 2, Layer 3 Levels of protocol
created for the TIA/EIA-136 system.
loopback A state in which incoming data is
fed back to the output with little or no
modification.
MACA Mobile Assisted Channel
Allocation. A procedure in which the
network requests mobiles operating on a
DCCH to measure and report the signal
strength on up to 15 channels specified by
the network and reports this information to
the network. The network uses the signal
quality information reported by the mobile
in conjunction with measurements made by
the network to decide if the mobile should
be handed off to another voice or traffic
channel. The mobile measures BER, and
RSSI.
magnitude error The rms value of the
difference between the expected magnitude
of the carrier and the measured magnitude.
MAHO Mobile Assisted HandOff. The
process by which a mobile measures and
reports signal quality of candidate RF
channels to the base. The base then uses this
information to select a channel for a
handoff.
max abs A measure of the power within
the Test Set.
Meas subsystem The firmware subsystem
which control measurements.
MS Mobile station.
MSID Mobile Station IDentification.
neighbor list A list of neighboring cells
containing information concerning the
DCCHs in those cells.
non-public system A system with a
restricted group of users. This encompasses
private and residential systems.
294
Glossary
notch filter A filter with a notch
characteristic. A certain band (usually
narrow) of frequencies is rejected, usually
with high suppression.
personal base station A base station
designed for very small scale use, such as in
a home.
order A message sent from the base to the
mobile which instructs the mobile to
perform an action.
periodic registration Periodic registration
is used for the mobile transceiver to
periodically remind the base station that it is
in the cell. See “registration”.
origin offset The magnitude of the RF
carrier leakage relative to the magnitude of
the modulated carrier at the detection point.
phase error The rms value of the
difference between the expected phase of
the carrier and the measured phase.
origination The process of setting up and
initiating a cellular phone call by the
mobile. A call originated by the base station
is called paging.
π/4 DQPSK A DQPSK system in which
the carrier changes phase by a multiple of
π/4 each time.
paging The process of setting up and
initiating a cellular phone call by the base
station. A call begun by the mobile station is
called an origination.
PAID Paging Channel Allocation
Identification
PCS Personal Communication Services.
An evolutionary step of wireless
communications which follows cellular
communications. Operating in a different
frequency band from cellular, it is designed
to offer various digital data services as well
as voice communications.
peak EVM See “EVM (EVM1, EVM10)”
on page 293. The peak value of EVM.
picocell A cell of a small size, used in
specific areas such as inside buildings.
private system A non-public system set up
for use by a private group.
probability block A grouping of control
channels which have a certain probability
that it will be able to provide DCCH
support. The service provider determines
which control channels belong to which
probability blocks. The mobile stores the
order of the probability blocks for its home
system.
PSID Public system identification
QPSK Quadrature Phase Shift Keying. A
modulation system in which the signal to be
modulated is digitized, then transmitted on
a carrier with a phase corresponding to the
value of the digital signal.
295
Glossary
Page The Test Set’s state in which it is
paging the transceiver under test in order to
establish communication.
Glossary
RACH Random Access Channel.
RAND Random challenge memory. A
value stored in the mobile. Used in
authentication.
SACCH Slow Associated Control
Channel. A reverse channel controlling the
Reverse Digital Traffic channel. See also
FACCH.
SAT Supervisory Audio Tone.
RDTC Reverse Digital Traffic Channel.
REGID The system clock used for
periodic registration.
Register The Test Set’s state in which
registration occurs.
registration The process by which a
mobile identifies itself to a base.
SCM Station Class Mark. A message
which describes the power class,
transmission capability, and bandwidth of
the mobile station.
REG_PER A timing value used in
periodic registration.
shared secret data Data used in the
authentication process.
release The process of ending a call
between the mobile and another station.
SID System Identification. A message
which must be sent at regular intervals,
providing the identification number for the
system.
residential system A non-public system
set up for use within a home.
reverse FACCH word message The
message that is sent from the mobile to the
base via the Fast Associated Control
Channel.
sleep mode The mode in which the mobile
is not continually communicating with the
base.
slot A time period within a channel
dedicated to one transmission.
reverse SACCH word message The
message that is sent from the mobile to the
base via the Slow Associated Control
Channel.
SMS Short Message Service. Used to
transmit short messages from an
TIA/EIA-136 base station to a mobile.
RSID Residential system identification
SSD Shared Secret Data. Data used in the
authentication process.
RSSI Received Signal Strength Indication.
RX Receive
296
scanning and locking The process in
which the mobile transceiver searches
eligible channels, selects one, and locks
onto that transmitter’s frequency.
state The condition that the Test Set is in.
Glossary
subsystem A section of firmware grouped
together for a specific task.
mobiles occupying the same channel from
colliding at the base station.
sync location The time in number of bit
periods from the trigger to the beginning of
the first sync word detected.
To Screen An area of the Test Set’s
display in which several features can be
selected.
TDMA Time Division Multiple Access. A
type of frequency division in which one
frequency is shared by multiple activities
sequentially. As a cellular phone system, a
TDMA system is defined by both a
frequency and a time slot.
toggle To switch back and forth, typically
between two choices.
test mode A mode in which the mobile
allows a traffic channel to become active
specifically for the purpose of testing.
TS Test Set or Test System.
Test System The Test equipment,
typically a Test Set and a Cellular Adapter,
connected together.
TX frequency error The difference
between the assigned carrier frequency and
the measured carrier frequency.
TIA/EIA Telecommunications Industry of
America/Electronics Industry of America.
An organized body of interested parties
which creates industry standards for cellular
communications and other systems.
TX power The transmitted power.
TX Transmit
user group A group of cellular users,
given special capability to communicate
with each other.
voice channel A frequency channel in
which voice and other signals are
transmitted by analog methods.
VSELP Vector Sum Excited Linear
Predictive. An encoding method for voice.
TIA/EIA-627 a TIA/EIA specification
describing a TDMA system with an ACC,
AVC, and DTC.
time alignment The process by which the
data transmitted by the mobile is aligned
within its time slot.This is necessary in
order to prevent bursts of data from multiple
297
Glossary
TIA/EIA-136 A standard created by the
TIA/EIA to define a Time Division
Multiple Access (TDMA) cellular phone
system. Its major differentiating feature
from most other TDMA systems is its
Digital Control Channel (DCCH).
traffic channel A frequency channel in
which voice and other signals are
transmitted digitally.
Glossary
wake up The process of the mobile
returning to its fully active state, after being
in sleep mode,
WER Word Error Rate.The number of
erroneous words received compared to the
total number of words received during the
observation period.
zero (power meter) The process by which
the Test set measures loss through the Test
Set in order to provide the most accurate
power measurement.
298
Index
Symbols
# Neighbors field
DCCH Call Configure screen, 220
# Systems field
DCCH Call Configure screen, 221
% BIT ERROR field
DCCH Call Configure screen, 221
Numerics
1 of N field
Authentication screen (AVC), 242
10 MHz REF OUT, 251
10MHz reference, 254
1900 MHz testing, 42
2x Frame triggering, 232
750 us de-emphasis, 234
299
Index
A
A_KEY field
Authentication screen (AVC), 240
Authentication screen (DTC), 237
ACC
definition, 291
registration data not displayed, 94
access
definition, 291
Access annunciator, 209
Call Control screen, 209
view of, 209
Access Burst field
DCCH Call Configure screen, 221
access mode
test set remains in, 85, 90, 92
ACELP
definition, 291
ACELP vocoder, 48, 219
acknowledgement
definition, 291
Active, 209
active
definition, 291
Active annunciator
Call Control screen, 209
view of, 209
Active field
Call Control screen, 209
view of, 209
Adjacent Channel Power
measuring, 112
adjacent channel power
definition, 291
AF Anl In field
Analog Meas screen, 233
AF Freq field
Analog Meas screen, 234
AF frequency
measurements, 234
AFGen1
selecting, 34
AFGen1 Freq field
Analog Meas screen, 234
AFGen1 To field
Analog Meas screen, 234
A-key
definition, 291
Index
amplitude, 210
Amplitude field
Analog Meas screen, 234
Call Control screen, 210
Digital Measurement screen, 230
amplitude triggering, 232
Amptd Low, Amptd Mid, Amptd Hi triggering, 232
analog call processing
definition, 291
using to make AMPS measurements,
59
analog color code
definition, 291
analog control channel
definition, 291
Analog Meas screen
AF Anl In field, 233
AF Freq field, 234
AFGen1 Freq field, 234
AFGen1 To field, 234
Amplitude field, 234
De-Emphasis field, 234
Detector field, 235
Filter 1 field, 235
Filter 2 field, 235
FM Deviation field, 235
TX Freq Error measurement, 235
TX Power measurement, 235
view of, 233
ANALOG MEASUREMENT screen, 56
analog measurements, 56
analog parameters
definition, 291
measuring, 113
analog voice channel
definition, 291, 292
ANLG MEAS
definition, 291
ANLG TG IN triggering, 232
annunciator
definition, 291
annunciators
view of, 67
arm
definition, 291
audio filter, 295
Authent field
300
AUTHENTICATION screen (AVC),
240
Authentication screen (DTC), 237
authentication, 281
AVC, 239
data used, 281
definition, 291
DTC, 236
procedures, 70
Authentication screen
for AVC view of, 239
for DTC, view of, 236
AUTHENTICATION screen (AVC)
Authent field, 240
Authentication screen (AVC)
1 of N field, 242
A_KEY field, 240
ESN field, 240
RAND_A field, 241
RAND_B field, 241
RAND_U field, 242
RANDSSD_1 field, 241
RANDSSD_2 field, 241
RANDSSD_3 field, 242
Authentication screen (DTC)
A_KEY field, 237
Authent field, 237
CHECKSUM field, 237
ESN field, 237
RAND field, 238
RAND_U field, 238
RANDSSD field, 238
autonomous registration
definition, 292
Autotuning with PCS, 44
AVC
definition, 292
AVC authentication, 239
AVC channel type, 218
AVC connection ends, 68
average power
definition, 292
measuring, 114
Average Power measurements, 130
Avg Power zero, HP-IB operation, 258
B
BAND field (Neighbor List)
DCCH Call Configure screen, 221
base station
active mode, 67
definition, 292
emulating, 62
personal, 295
BER
definition, 292
display, 117, 145
measuring, 115
BER, loopback, 257
bit error rate
definition, 292
BS
definition, 292
Index
Voc field, 219
Voice Channel Assignment fields, 219
call processing
analog, 291
definition, 292
digital, 293
handoff, 294
origination, 295
paging, 295
procedures, 61, 243
registration, 93, 296
setting up, 64
tasks, 57
unavailable during Meas mode, 107
caller ID
name, 226, 228
name size, 227
no name or number, 228
number, 226
screening, 228
send name and number, 228
send number only, 228
Calling Name field
DCCH Call Configure II screen, 226
Calling Num
Call Configure screen, 226
Calling Num field
DCCH Call Configure II screen, 226
calling number, 79
definition, 292
camping, 268
definition, 292
Camping, problems on Cntrl Chan, 259
CCITT Recommendation E.212, 80
Cellular Adapter
front view, 32
what it’s designed to do, 50
cellular adapter
definition, 292
Chan field
Call Control screen, 210
channel
choosing the correct, 85, 90, 92
traffic, 231
channel designation, 275
definition, 292
Channel field (Neighbor List)
DCCH Call Configure screen, 221
channel number, 210
CHECKSUM field
Authentication screen (DTC), 237
choices menu
definition, 292
Cntl Channel field
Call Control screen, 211
Cntl Order field
Call Control screen, 211
compensation, temperature, 228
Configure screen
PCS Mode, 44
PCS Mode field, 64
PCS RF I/O, 44
RF Level Offset, 44
confirm initial traffic channel, 275
confirming registration, 223
connect
definition, 292
Connect annunciator
Call Control screen, 210
view of, 211
connect mode ends, 68
connecting
do not connect to ANT IN port, 38
Test Set to a mobile, 38
control channel, 268
definition, 292
control orders, 88
conversation task, 275
country code, 80
definition, 292
Country Code field
DCCH Call Configure screen, 221
counts-p
definition, 292
CRC
definition, 292
current
measurements, 234
301
Index
C
calibration (temperature compensation),
47
Calibration factors
restoring, 255
call
originated by mobile, 89
CALL CNFG
definition, 292
CALL CNTL
definition, 292
CALL CONFIGURE screen, 54
Call Configure screen
Calling Num, 226
call connected indicator, 210
CALL CONTROL screen, 53
how to access, 37
Call Control screen
Access annunciator, 209
Active annunciator, 209
Active field, 209
active mode, 67
Amplitude field, 210
Chan field, 210
Cntl Channel field, 211
Cntl Order field, 211
Connect annunciator, 210
Display field, 212
DVCC field, 212
for DAMPS, view of, 207
for DCCH, view of, 207, 208
Handoff field, 213
how to access, 65
MS ID field, 214
Order field, 215
Page annunciator, 215
Page field, 215
Pwr Lvl field, 216
Register annunciator, 216
Register field, 216
Release field, 217
SAT field, 217
SID field, 217
Slot field, 218
System Type field, 218
Traffic Chan Assignment fields, 218
Type field, 218
VC Order field, 219
Index
D
DAMPS, 50
definition, 292
how to choose, 50
DAMPS system type, 218
data
difference between data and measurements, 100
how to switch between data and measurements, 101
data displayed, 101
DC Current
calibrating, 255
dc level
measurements
, 234
DCCH, 50
camping state, 273
definition, 292
how to choose, 50
initialization tasks, 272
scanning and locking, 272
service aspects, 273
signal strength, 273
DCCH Call Configure II screen
Calling Name field, 226
Calling Num field, 226
MS Capab field, 227
Name Size field, 227
Num Fax field, 227
Num SMS field, 227
Num Voice field, 227
Pres Type field, 228
Screen Ind field, 228
Temperature field, 228
view of, 226
DCCH Call Configure screen
# Neighbors field, 220
# Systems field, 221
% BIT ERROR field, 221
Access Burst field, 221
BAND field (Neighbor List), 221
Channel field (Neighbor List), 221
Country Code field, 221
DCCH DVCC field, 222
Dig Signal field, 222
DTC Burst field, 222
302
Power Meter field, 222
PSID/RSID field, 222
Publid sys field, 223
Reg Conf field, 223
RF Path field, 223
Sat Tol field, 224
SMS Contents field, 224
SMS Msg field, 224
SMS Size field, 224
SMS Type field, 225
SOC field, 225
view of, 220
DCCH DVCC field
DCCH Call Configure screen, 222
DCCH screens via HP-IB, 255
DCCH subsystem
definition, 292
DCCH system type, 218
DCCH WER
measuring, 143
DCFM Offset
calibrating, 255
De-Emphasis field
Analog Meas screen, 234
Detector field
Analog Meas screen, 235
device under test
definition, 293
DIG MEAS
definition, 293
Dig Meas field
Digital Measurement screen, 230
Dig Signal field
DCCH Call Configure screen, 222
digital call processing
definition, 293
Digital Control Channel
see DCCH
digital control channel
definition, 292
DIGITAL MEASUREMENT screen, 55
Digital Measurement screen
Amplitude field, 230
Dig Meas field, 230
DVCC field, 230
Pwr Gain field, 230
Slot field, 231
Traffic Chan field, 231
Trig Type field, 232
view of, 229
digital measurement screen display, 119
digital measurements
in test mode, 118
digital quadrature phase-shift keying
definition, 293
digital traffic channel
definition, 293
digital verification color code
definition, 293
digital verification color code (DVCC),
212
disarm
definition, 293
Display
HP-IB error, 257
Display field
Call Control screen, 212
view of, 212
distortion
measurements, 234
DMAC
definition, 293
downbanding, 81
definition, 293
DQPSK
definition, 293
Droop
measuring, 120
droop
definition, 293
dropped call, 111
definition, 293
dropped call indications, 68
DSP
definition, 293
DTC
definition, 293
DTC authentication, 236
DTC Burst field
DCCH Call Configure screen, 222
DTC channel type, 218
DTC Msg error, 259
DTC not detected, 68
DTC timeslot, 218
DTC WER
measuring, 143
Index
DTMF, 283
definition, 293
dual tone multi-frequency signaling, 283
dual tone multiple frequency
definition, 293
DUT
definition, 293
DVCC
choosing the correct, 85, 90, 92
for the DCCH, 222
DVCC field
Call Control screen, 212
Digital Measurement screen, 230
DVCC.
See digital verification color code
E
EIA/TIA-136, 32, 218
and TDMA, 266
basic features of, 267
definition, 266, 297
DVCC, slot and channel number, 85,
90, 92
transceiver, 268
EIA/TIA-136 CALL CONTROL screen
how to access, 37
EIA/TIA-136 transceiver
block diagram, 270
EIA/TIA-627, 218
electronic serial number (ESN), 237, 240
emulate
definition, 293
error vector magnitude
definition, 293
ESN
definition, 293
ESN field
Authentication screen (AVC), 240
Authentication screen (DTC), 237
EVM
definition, 293
measuring, 121
F
FACCH, 82, 159
definition, 293
FACCH/SACCH programming, 159
fast associated control channel(FACCH),
159
fax messages waiting, 227
field
definition, 293
field descriptions, 205
filter
selecting the proper notch, 34
Filter 1 field
Analog Meas screen, 235
Filter 2 field
Analog Meas screen, 235
Firmware revisions, 42
Firmware Upgrade, 42
flowchart
get ready to test, 33
tasks to test a mobile, 40
FM Deviation field
Analog Meas screen, 235
Frame Clk triggering, 232
frequency error, SAT, 224
frequency modulation, 268
frequency shift keying, 268
FSK
definition, 293
full-rate
definition, 293
Index
303
Index
G
Getting Started, 31
GPIB
definition, 293
304
H
half-rate
definition, 294
handoff, 83, 279
basic procedure, 279
definition, 294
display, 84
parameters needed, 83
Handoff field
Call Control screen, 213
view of, 213
Handoffs, 255
Handoffs over HP-IB, 257
help
before you call, 261
host firmware
definition, 294
HP 83206A
about, 32
call processing tasks, 57
HP 8920
using the Test Set, 59
HP Support phone number, 253
HP-IB
accessing DCCH screens, 255
displaying screens, 154
HP-IB command syntax
Integer Number Setting, 199
Multiple Real Number Setting, 201
Real Number Setting, 200
HP-IB, Avg Pwr zero, 258
HP-IB, triggering errors, 258
HP-IB.
See GPIB
I
idle
definition, 294
idle mode, 268
Immediate triggering, 232
IMSI
definition, 294
initialization, 271
definition, 294
Initializing the PCS Interface, 44
Integer Number Setting
HP-IB command syntax diagram, 199
IQ modulation, bypassing or enabling,
223
IQ RF OUT, 252
IS-136.
See TIA-EIA-136
IS-137, 55
IS-54-B.
See TIA-EIA-627
Index
L
Layer 2, Layer 3
definition, 294
loopback
definition, 294
Loopback BER, 257
loss of Traffic Channel, 68
loss of voice channel, 68
mobile country code, 80
mobile station identification (MSID), 214
modulation methods, 268
MS
definition, 294
MS Capab
selecting mobile type, 46
MS Capab field
DCCH Call Configure II screen, 227
MSID
definition, 294
MSID field
Call Control screen, 214
Multiple Real Number Setting
HP-IB command syntax diagram, 201
MWI, sending, 211
Index
M
MACA, 283
definition, 294
magnitude error
definition, 294
measuring, 123
MAHO, 279
definition, 294
measuring, 124, 126
procedure, 280
setting up the measurement, 125
Max Abs, 135
max abs
definition, 294
measure subsystem
definition, 294
measurement
changing the display, 107
measurements, 58
AF frequency, 234
changing units, 110
current, 234
dc level, 234
distortion, 234
no call processing during Meas mode,
107
procedures, 99, 243
SNR, 234
TX frequency error, 235
TX power, 235
measurements displayed, 102
measurements screen
display, 106
display of different measurement sets,
103, 104
display of Test mode measurements,
108
displaying, 102
Test mode, 105
message waiting indicator (MWI), 227
meter, power, 222
MIN
MS id, 73
mobile assisted channel allocation, 283
definition, 294
mobile assisted handoff, 279
definition, 294
mobile assisted handoff (MAHO), 124
305
Index
N
Name Size field
DCCH Call Configure II screen, 227
neighbor channels, 125
neighbor list
definition, 294
Neighbor List BAND field
DCCH Call Configure screen, 221
Neighbor List Channel field
DCCH Call Configure screen, 221
neighbors, number of, 220
no reverse DTC detected, 68
non-public system
definition, 294
non-public system selection, 282
Non-recoverable firmware error, 254
Not Avail, 228
Not Scrn (not screened) screening, 228
notch filter
definition, 295
selecting, 34
Num Fax field
DCCH Call Configure II screen, 227
Num SMS field
DCCH Call Configure II screen, 227
Num Voice field
DCCH Call Configure II screen, 227
Nwrk Prov (network provided) screening, 228
306
O
order
definition, 295
Order field
Call Control screen, 211, 215
Ordering firmware upgrades, 42
orders, 88
origin offset
definition, 295
measuring, 128
origination, 273
by mobile, 89
definition, 295
message, 275
P
p/4 DQPSK
definition, 295
page
how to, 91
Page annunciator
Call Control screen, 215
view of, 215
Page field
Call Control screen, 215
view of, 215
page state
definition, 295
page the mobile, 215
paging, 278
definition, 295
mobile station, 74
paging channel allocation identification
definition, 295
paging error, 259
PAID
definition, 295
path loss compensation, 44
PCS
definition, 295
PCS Interface, 42, 64
connections, 288
PCS Interface initialization, 44
PCS Interface path loss, 44
PCS Interface, RF IN/OUT port, 44
PCS Mode
conflict with autotuning, 44
turning on or off, 64
PCS Mode field
Configure screen, 64
PCS Operation problems, 261
PCS RF I/O
path loss, 44
PCS testing, 42, 63
peak EVM
definition, 295
% BIT ERROR field
DCCH Call Configure screen, 221
periodic registration, 276, 277
definition, 295
personal base station
definition, 295
personal communication services
Index
SAN, 154
SAT, 152
SLOT?, 151
TPOW?, 152
TYPE?, 151
VCH, 152
VMAC, 152
VTYPE, 152
ZPOW, 150
programming
also use HP8920, 148
FACCH/SACCH, 159
programming commands
BLKCount, 163
CLEAr, 167
CPOVerride, 160
FALog, 161
FOWord, 165
PERiod, 164
SALog, 162
SEND, 166
STOP, 166
programming the Cellular Adapter, 147
protocol
cellular, PCS, or Band 10, 227
PSID
definition, 295
PSID/RSID field
DCCH Call Configure screen, 222
Public Sys field
DCCH Call Configure screen, 223
public system, 223
public system identification, 295
Pwr Gain field
Digital Measurement screen, 230
Pwr Lvl field
Call Control screen, 216
Q
QPSK
definition, 295
quadrature phase-shift keying
definition, 295
Query Unterminated, 257
Index
definition, 295
phase error
definition, 295
measuring, 129
Phone number
HP Support, 253
phone number
MS Id, 73
picocell
definition, 295
power gain, 230
power level, 216
Power Measurements, 130
Power Meter field
DCCH Call Configure screen, 222
power on and initialization, 271
Pres OK, 228
Pres Res, 228
Pres Type field
DCCH Call Configure II screen, 228
private system, 222
definition, 295
probability block
definition, 295
program example
APOW?, 152
call processing, 149
CCH, 149
CME, 154
COND?, 149
Condition Register, 156
CSYS, 149, 154
DCON, 154
DISP ACNT, 154
DMAC?, 151
DME, 154
DROop?, 152
DVCC?, 151
FERR?, 152
HAND, 152
MEAS, 152
MTYPe, 152
ORD, 151
PAGE, 151
PNUM?, 150
POW?, 151
REGister, 150
REL, 153
307
Index
R
RACH
definition, 296
RAND
definition, 296
RAND field
Authentication screen (DTC), 238
RAND_A field
Authentication screen (AVC), 241
RAND_B field
Authentication screen (AVC), 241
RAND_U field
Authentication screen (AVC), 242
Authentication screen (DTC), 238
RANDSSD field
Authentication screen (DTC), 238
RANDSSD_1 field
Authentication screen (AVC), 241
RANDSSD_2 field
Authentication screen (AVC), 241
RANDSSD_3 field
Authentication screen (AVC), 242
RDTC
definition, 296
Real Number Setting
HP-IB command syntax diagram, 200
received signal strength indication
definition, 296
REF UNLOCK indicator, 254
reference unlocked, 254
Reg Conf field
DCCH Call Configure screen, 223
REG_PER
definition, 296
REGID
definition, 296
Register annunciator
Call Control screen, 216
view of, 216
Register field
Call Control screen, 216
view of, 216
register state
definition, 296
register the mobile, 216
registers
status, 155
registration, 93, 276
308
definition, 296
typical data display, 88, 93
registration update, 275
registration, confirming, 223
release, 276
base releases, 276
by mobile, 95, 276
by Test Set, 96
definition, 296
release call in progress, 217
Release field
Call Control screen, 217
view of, 217
Releasing calls over HP-IB, 257
reset
restarting the Test Set, 34
residential system, 222
definition, 296
residential system identification, 296
restoring calibration factors, 255
reverse digital traffic channel (RDTC),
159
reverse FACCH
definition, 296
reverse SACCH
definition, 296
RF Analyzer Auto Tuning, 44
RF IN/OUT port, PCS Interface, 44
RF Level Offset
path loss, 44
RF Path field
DCCH Call Configure screen, 223
RF power loss, 68
RSID
definition, 296
RSSI
definition, 296
RX
definition, 296
S
SACCH, 82, 159
definition, 296
SAT field
Call Control screen, 217
SAT frequency error, 224
Sat Tol field
DCCH Call Configure screen, 224
SAT.
Seesupervisory audio tone
Save/Recall settings
for PCS Interface, 65
general, 64
saving instrument settings, 64
scanning and locking
definition, 296
SCM
definition, 296
screen
displaying via HP-IB, 154
mnemonics, 154
Screen Ind field
DCCH Call Configure II screen, 228
screen reference, 205
screening, caller ID, 228
screens
how to access, 206
Send MWI, 211
Send SMS, 211
shared secret data
definition, 296
short message
automatic contents, 224
customized contents, 224
selecting automatic or customized, 225
sending, 97
size, 224
short message service, 280
definition, 296
short messages waiting, 227
shortened DTC burst, 222
SID
definition, 296
SID field
Call Control screen, 217
sleep mode
definition, 296
slot
Index
systems, number of, 221
T
TDMA, 32
definition, 297
temperature compensation, 47, 228
Temperature compensation, over HP-IB,
257
Temperature field
DCCH Call Configure II screen, 228
test mode, 55
definition, 297
Test Set
connecting to Cellular Adapter, 286
test set
configuring, 64
test system
definition, 297
TIA test mode measurements, 118
connect mode, 118
TIA/EIA
definition, 297
TIA/EIA Test Mode, 55
TIA/EIA-627
definition, 297
time alignment, 276
definition, 297
timeslot for DTC, 218
To Screen
definition, 297
toggle
definition, 297
Traffic Chan field
Digital Measurement screen, 231
traffic channel
definition, 297
traffic channel assignment, 218
Traffic Channel Assignment fields
Call Control screen, 218
Trig Type field
Digital Measurement screen, 232
triggering
types of, 232
Troubleshooting, 253
TS
definition, 297
TX
definition, 297
TX Freq Error measurement
Analog Meas screen, 235
309
Index
choosing the correct, 85, 90, 92
definition, 296
Slot field
Call Control screen, 218
Digital Measurement screen, 231
slot pairings, 231
slow
associated
control
channel(SACCH), 159
SMS, 280
definition, 296
SMS Contents field
DCCH Call Configure screen, 224
SMS messages, 97
SMS Msg field
DCCH Call Configure screen, 224
SMS Size field
DCCH Call Configure screen, 224
SMS Type field
DCCH Call Configure screen, 225
SMS, sending, 211
SNR
measurements
, 234
SOC field
DCCH Call Configure screen, 225
Squelch interupt message, 259
SSD
definition, 296
SSD update, 281
state
definition, 296
status registers, 155
subsystem
definition, 297
supervisory audio tone
definition, 296
supervisory audio tone (SAT), 217
sync location
definition, 297
measuring, 138
system identification
definition, 296
system identification (SID), 217
system operating code, 225
system parameter overhead message, 242
System Type field
Call Control screen, 218
Index
TX frequency error
definition, 297
TX power
definition, 297
measuring, 139
TX Power measurement
Analog Meas screen, 235
TX Power measurements, 130
TX Power Zero, 255
Type field
Call Control screen, 218
310
U
units
changing, 110
user group
definition, 297
V
VC Order field
Call Control screen, 219
vector sum excited linear predictive
definition, 297
Ver&Fail (verify and fail) screening, 228
Ver&Pass (verify and pass) screening,
228
Voc
ACELP, 48
VSELP, 48
Voc field
Call Control screen, 219
vocoder selection, 48
voice channel
definition, 297
voice channel assignment, 219
Voice Channel Assignment fields
Call Control screen, 219
voice messages waiting, 227
VSELP
definition, 297
VSELP vocoder, 48, 219
Index
W
wake up
definition, 298
WER
definition, 298
measuring, 143
word error rate
definition, 298
Z
zero power meter
definition, 298
zero the Average Power meter, 35
zero the RF Power meter
how often, 36
Zeroing the Average Power Meter, 34
Index
311
Index
312
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