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Agilent Technologies
87050A Option K12
Multiport Test Set
User’s and Service Guide
Use this manual with these documents:
Agilent 8720D User’s Guide
Part Number 08720-90288
Agilent 8720D Service Guide
Part Number 08720-90292
Agilent Technologies Part Number: 87050-90102
Printed in USA November 2000
Notices
No part of this manual may be reproduced in any form or by any means
(including electronic storage and retrieval or translation into a foreign
language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United States and international
copyright laws.
Restricted Rights Legend
Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
Technical Data and Computer Software clause at DFARS 252.227-7013
for DOD agencies, and subparagraphs (c)(1) and (c)(2) of the
Commercial Computer Software Restricted Rights clause at
FAR 52.227-19 for other agencies.
Warranty
The material contained in this document is subject to change without
notice. Agilent Technologies makes no warranty of any kind with
regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose.
Agilent Technologies shall not be liable for errors contained herein or
for incidental or consequential damages in connection with the
furnishing, performance, or use of this material.
Agilent Technologies, Inc.
1212 Valley House Drive
Rohnert Park, CA 94928-4999, U.S.A.
© Copyright 2000 Agilent Technologies, Inc.
ii
Contents
1. Agilent Technologies
87050A Option K12 Overview
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2. Installation and Calibration
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Checking the Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Meeting Electrical and Environmental Requirements . . . . . . . . . . . 2-4
Connecting and Turning On the Test Set. . . . . . . . . . . . . . . . . . . . . . 2-8
Setting the Test Set Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Performing the Operator’s Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
3. Controlling the Test Set and Making Measurements
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Calibrating the Test System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Example Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Making Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Example Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
The Control Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
4. Front and Rear Panels
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Contents-1
5. Specifications and Characteristics
Performance Specifications and Characteristics . . . . . . . . . . . . . . . .
Environmental Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-Operating Storage Conditions . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2
5-3
5-3
5-3
5-3
5-4
5-4
5-4
6. Service
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Return Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Performance Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Replaceable Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
General Troubleshooting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Troubleshooting Power Supply Problems . . . . . . . . . . . . . . . . . . . 6-21
Troubleshooting the Front Panel Display Board . . . . . . . . . . . . . 6-22
Troubleshooting the Controller and Switch Driver Boards . . . . . 6-22
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
System Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
A1 Power Supply Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
A2 Front Panel Display Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
A3 Controller Board (Mother Board) and Switch Driver Board
(Daughter Board) Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
7. Safety and Regulatory Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Agilent Technologies Sales and Service Offices . . . . . . . . . . . . . . .
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents-2
7-2
7-3
7-4
7-7
1
Agilent Technologies
87050A Option K12 Overview
User’s and Service Guide
1-1
Agilent Technologies 87050A Option K12 Overview
Description
Description
The Agilent Technologies 87050A Option K12 multiport test set is
designed for use with Agilent Technologies 50Ω network analyzers such
as the 8720D.
The multiport test set provides the ability to make single connection,
multiple measurements of multiport devices such as distribution
amplifiers, taps, switches, and couplers. These devices may have up to
twelve12 ports. Throughput is increased by reducing the number of
device reconnects the operator must perform. Switching is performed
with mechanical switches.
The test set can be controlled by using an external GPIB controller, or
parallel control.
NOTE
The 87050A Option K12 User’s and Service Guide documents the use of
the test set with an 8720D network analyzer only.
1-2
User’s and Service Guide
2
Installation and Calibration
User’s and Service Guide
2-1
Installation and Calibration
Introduction
Introduction
This chapter guides you through the steps necessary to correctly and
safely install the multiport test set. The steps are
1. checking the shipment
2. meeting electrical and environmental requirements
3. connecting and turning on the test set
4. setting the test set address switch
5. performing the operator’s check
2-2
User’s and Service Guide
Installation and Calibration
Checking the Shipment
Checking the Shipment
After the test set has been unpacked, it is recommended that the
original packaging materials are kept so they may be used if the
instrument should need to be transported.
Check the items received against Table to make sure that you have
received everything.
Inspect the test set and all accessories for any signs of damage that may
have occurred during shipment. If your test set or any accessories
appear to be damaged or missing, call your nearest
Agilent Technologies sales or service office (refer to page 7-3 for the
nearest office).
Table 2-1
87050A Option K12 Accessories Supplied
Description
Part Number
Quantity
See Figure 4-3 on page 4-7
1
Front Handle Kit
5063-9228
1
Rack Mount Kit
5063-9235
1
Parallel Cable
8120-6818
1
RF Cable SMA (f) to SMA (m)
87050-20345
2
RF Cable N (m) to SMA (m)
87050-20346
2
User’s and Service Guide
87050-90102
1
Power Cord
User’s and Service Guide
2-3
Installation and Calibration
Meeting Electrical and Environmental Requirements
Meeting Electrical and Environmental Requirements
1. The line power module on your test set is an autoranging input. It is
designed to be used with an ac power source with a nominal voltage
of either 115 V or 230 V.
2. Ensure that the available ac power source meets the following
requirements:
• 90 to 250 Vac
• 48 to 66 Hz
• 40 watts
CAUTION
This product has an autoranging line voltage input. Be sure the supply
voltage is within the specified range. If the ac line voltage does not fall
within these ranges, an autotransformer that provides third wire
continuity to earth ground should be used.
3. Ensure that the operating environment meets the following safety
requirements for
• indoor use
• altitude up to 15,000 feet (4,572 meters)
• temperature range of 0 °C to 55 °C
• maximum relative humidity: 80% for temperatures up to 31 °C,
decreasing linearly to 50% relative humidity
• enclosure protection, IP 20, according to IEC 529
CAUTION
This product is designed for use in INSTALLATION CATEGORY II,
and POLLUTION DEGREE 2, per IEC 101 and 664 respectively.
2-4
User’s and Service Guide
Installation and Calibration
Meeting Electrical and Environmental Requirements
4. Verify that the power cable is not damaged, and that the power
source outlet provides a protective earth ground contact. Note that
the Figure 2-1 depicts only one type of power source outlet. Refer to
Figure 4-3 on page 4-7 to see the different types of power cord plugs
that can be used with your test set.
Figure 2-1
Protective Earth Ground
WARNING
This is a Safety Class I product (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 the instrument, is likely to make
the instrument dangerous. Intentional interruption of the
protective conductor is prohibited.
User’s and Service Guide
2-5
Installation and Calibration
Meeting Electrical and Environmental Requirements
5. If you are installing the test set into a cabinet, ensure there are at
least two inches of clearance around the sides and back of the test
set and the system cabinet. See Figure 2-2. The convection into and
out of the test set must not be restricted. The ambient temperature
(outside the cabinet) must be less than the maximum operating
temperature of the test set by 4 °C for every 100 watts dissipated in
the cabinet.
Figure 2-2
CAUTION
Ventilation Clearance Requirements
If the total power dissipated in the cabinet is greater that 800 watts,
then forced convection must be used.
2-6
User’s and Service Guide
Installation and Calibration
Meeting Electrical and Environmental Requirements
6. Set up a static safe workstation. Electrostatic discharge (ESD) can
damage or destroy components (refer to Figure 2-3).
Figure 2-3
Example of an Antistatic Workstation
User’s and Service Guide
2-7
Installation and Calibration
Connecting and Turning On the Test Set
Connecting and Turning On the Test Set
The 87050A Option K12 test set is designed to be placed underneath
the network analyzer, in a rack system or on a bench top, and connected
as shown in Figure 2-4. Use the two APC 3.5 50Ω jumper cables
(5062-6682) that were shipped with the test set. See Table 2-1 on page
2-3 for a list of accessories supplied.
Figure 2-4
Connecting the Test Set to the Network Analyzer
Install the parallel cable (8120-6818) from the rear panel PARALLEL
connector of the network analyzer to the rear panel PARALLEL INPUT
connector of the test set.
Depending on how you will communicate with the test set (see Chapter
3, “Controlling the Test Set and Making Measurements”), connecting
an GPIB cable from the controller to the rear panel of the network
analyzer may also be necessary.
After the proper front and rear panel connections have been made, turn
on the test set using the front panel line switch. The front panel line
switch disconnects the mains circuits from the mains supply after the
EMI filters and before other parts of the instrument.
NOTE
For accurate, repeatable measurements, be sure to let the test set warm
up for at least 2 hours. For the most stable and accurate measurements,
leave the test set turned on at all times.
2-8
User’s and Service Guide
Installation and Calibration
Setting the Test Set Address Switch
Setting the Test Set Address Switch
The test set is shipped with the GPIB address set to 12, which sets the
parallel address to 0 as in Figure 2-5. Refer to Chapter 3, “Controlling
the Test Set and Making Measurements,” for the definition of the
parallel address.
To set the GPIB address, set all five switches so that the sum of the
switches in the on (or 1) position equal the desired address. In the
example below, the two switches in the on position are 8 and 4, thus the
GPIB address of 12.
To set the parallel address, use only the number 1 switch. Therefore,
the possibilities for parallel port addressing are 0 or 1.
NOTE
When GPIB is used, the parallel address is ignored.
Figure 2-5
The Test Set Address Switch
User’s and Service Guide
2-9
Installation and Calibration
Performing the Operator's Check
Performing the Operator’s Check
For information on controlling the test set, refer to Chapter 3,
“Controlling the Test Set and Making Measurements.”
Description
The following operator's check is designed to provide you with a high
degree of confidence that your test set is working properly. It is not
designed to verify specifications. To verify specifications, refer to
Chapter 6, “Service.”
Procedure
This procedure is for performing a simple operator's check using a
network analyzer of the proper frequency range and impedance.
Equipment
Required
• Network Analyzer, 50Ω impedance (8720D)
• Cable, 50Ω, 3.5-mm (8120-4921 or equivalent), quantity 2
• Calibration Kit, 50Ω, 3.5-mm (85052B)
Process
1. Connect the 50Ω cable to PORT 1 of the analyzer.
2. Perform a one-port reflection calibration at the end of the 50Ω cable
over the frequency range of 50 MHz to 20 GHz on the analyzer.
Verify that the calibration is active and that a cable terminated with
a short displays a return loss of 0±0.2 dB.
3. Connect the cable (already connected to PORT 1 of the analyzer) to
the REFLECTION port of the 87050A Option K12 test set.
4. Measure the return loss of each path of the test set by selecting
PORT 1 through PORT 12, one at a time, using the network
analyzer. Terminate each port being tested with a 50Ω load
(≥−30 dB). The resulting return loss should be ≥−12 dB (the absolute
value should be greater than 12).
5. Connect the cable (already connected to the REFLECTION port) to
the TRANSMISSION port of the test set.
6. Measure the return loss of each path of the test set by selecting
PORT 1 through PORT 12, one at a time, using the network
analyzer. Terminate each port being tested with a 50Ω load
(≥−30 dB). The resulting return loss should be greater than
−12 dB (the absolute value should be greater than 12).
NOTE
This is an 80% confidence test only. A test set could pass this simple
test and yet still not function properly. For more complete testing, see
“Performance Tests”, on page 6-3.
2-10
User’s and Service Guide
3
Controlling the Test Set and Making
Measurements
3-1
Controlling the Test Set and Making Measurements
Introduction
Introduction
The 87050A Option K12 is a "slave" instrument: a controller must be
used to control the test set. There are three ways in which the test set
can be controlled:
1. The controller can talk to the network analyzer using GPIB, which
then controls the test set via the parallel connection.
2. The controller can control the test set using GPIB commands via the
GPIB connector.
3. A network analyzer equipped with a parallel connection can control
the test set directly.
3-2
Chapter 3
Controlling the Test Set and Making Measurements
Commands
Commands
As mentioned earlier, the test set can be controlled in three ways. The
first two involve the use of a separate computer. The third way uses the
network analyzer manually. These methods of control are detailed on
pages 3-3 through 3-5.
Computer Control
1. The first way to control the test set is to write GPIB commands to
the network analyzer which then writes to the test set by way of the
parallel port. See Figure 3-1 on page 3-4 for a diagram of connections
for this type of control. The following examples use the variable [D]
which is defined in Table 3-1 on page 3-6.
To use a parallel port connection with the 8720D, use a GPIB
command to write bits on the parallel port. The following example
assumes that the address of the network analyzer is 16.
OUTPUT 716;"PARALGPIO;"
Sets the parallel port for
GPIO function
OUTPUT 716;"PARAOUT[D];"
Programs all GPIO output
bits (0 to 256) at once
Be sure to use the ending semi-colon.
2. The second way to control the test set is to address the
87050A Option K12 test set directly over GPIB, using a controller to
write directly to the test set’s GPIB port. The following example
assumes that the address of the test set is 12.
OUTPUT 712;"command$"
Chapter 3
3-3
Controlling the Test Set and Making Measurements
Commands
If using Quick Basic or Visual Basic, be sure to disable EOI and EOL
before sending commands to the test set. Including the semicolon
will not insure that these commands are disabled as would be the
case in HP Basic/RMB. Using the 82335 GPIB Interface and Visual
Basic, the following commands will disable the EOI, EOL, send the
necessary data to the test set, and re-enable EOI and EOL. Be sure
to re-enable EOI and EOL before sending data to another
instrument.
HpibEoi(hHpib;7,0) ’disable EOI
HpibEol(hHpib;7,"",0) ’disable EOL
HpibOutput(hHpib;712,chr$([D])) ’send command to
test set
HpibEol(hHpib;7,chr$(13)+chr$(10),2) ’re-enable EOL
and set to’chr$(13)+chr$(10)
HpibEoi(hHpib;7,1,) ’re-enable EOI
where hHpib specifies the handle returned by HpibOpen.
For more information on the EOI and EOL commands, refer to the
programming library manual supplied with the 82335 interface.
Figure 3-1
NOTE
Controlling the Test Set over GPIB
Connection to the network analyzer is not required when controlling
the test set over GPIB.
3-4
Chapter 3
Controlling the Test Set and Making Measurements
Commands
Network Analyzer Control
3. The third method of sending commands uses the network analyzer
to control the test set directly. This method is performed with the
standard setup of the network analyzer working with the test set. A
parallel cable is connected from the network analyzer output to the
test set input on both rear panels.
The following example for manual control, using the network
analyzer, uses normal text in brackets to indicate hard keys and
italicized text in brackets to indicated soft keys.
Press:
[Seq]
[TTL I/O] [PARALLEL OUT ALL]
Use the arrow keys (↑ or ↓) to scroll to the desired test port address,
or input the number directly using the hard keys [D] [x1], where D
represents the decimal value of the test port address (see Table 3-1
on page 3-6).
Chapter 3
3-5
Controlling the Test Set and Making Measurements
Commands
Table 3-1
Test Port Addresses
Connection Path
Decimal [D]
Binary Equivalent
GPIB Command
Reflection to Port 1
0
00000000
refl_01
Reflection to Port 2
1
00000001
refl_02
Reflection to Port 3
2
00000010
refl_03
Reflection to Port 4
3
00000011
refl_04
Reflection to Port 5
4
00000100
refl_05
Reflection to Port 6
5
00000101
refl_06
Reflection to Port 7
6
00000110
refl_07
Reflection to Port 8
7
00000111
refl_08
Reflection to Port 9
8
00001000
refl_09
Reflection to Port 10
9
00001001
refl_10
Reflection to Port 11
10
00001010
refl_11
Reflection to Port 12
11
00001011
refl_12
Reflection Terminated
25
00011001
*r_term
Transmission to Port 1
26
00011010
tran_01
Transmission to Port 2
27
00011011
tran_02
Transmission to Port 3
28
00011100
tran_03
Transmission to Port 4
29
00011101
tran_04
Transmission to Port 5
30
00011110
tran_05
Transmission to Port 6
31
00011111
tran_06
Transmission to Port 7
32
00100000
tran_07
Transmission to Port 8
33
00100001
tran_08
Transmission to Port 9
34
00100010
tran_09
Transmission to Port 10
35
00100011
tran_10
Transmission to Port 11
36
00100100
tran_11
Transmission to Port 12
37
00100101
tran_12
Transmission Terminated
50
00110010
*t_term
All Ports Terminated
51
00110011
*all_term
Reset
52
00110100
*rst
Test Set Identification
idn?
Test Set Serial Number
sn?
3-6
Chapter 3
Controlling the Test Set and Making Measurements
Commands
To connect all ports to their internal 50Ω loads, send the following
command by way of the parallel port:
OUTPUT 716;"PARALGPIO;"
OUTPUT 716;"PARAOUT 51;"
When a test set port is not in use, it is terminated in 50Ω.
If the 87050A Option K12 is being controlled by GPIB, you can identify
the test set serial number by sending the following commands:
OUTPUT 712;"sn?"
ENTER 712;Sn$
DISP Sn$
NOTE
This command may only be used with GPIB control.
Reset Command When the Reset command is sent, the test set is set to the default state
where the REFLECTION port is directed to reflection PORT 1 and the
TRANSMISSION port is directed to transmission PORT 2.
Chapter 3
3-7
Controlling the Test Set and Making Measurements
Commands
Switch Count
Commands
Reference the 87050A Option K12 block diagram, Figure 6-1 on page
6-29, for the switch paths.
To read the individual switch count, send the following command:
Output 712;”sw14?”
The above example shows the command for switch 14 only. This
command returns a value which indicates the number of times the
particular switch has been addressed and switched. To enter additional
commands use Table 3-2.
3-8
Chapter 3
Controlling the Test Set and Making Measurements
Commands
Table 3-2
Switch Count Commands
Switch Number
GPIB Command
SW11
sw11?
SW12
sw12?
SW14
sw14?
SW15
sw15?
SW16
sw16?
SW17
sw17?
SW50
sw50?
SW51
sw51?
SW52
sw52?
SW53
sw53?
SW54
sw54?
SW55
sw55?
SW56
sw56?
SW57
sw57?
SW58
sw58?
SW59
sw59?
SW60
sw60?
SW61
sw61?
Chapter 3
3-9
Controlling the Test Set and Making Measurements
Calibrating the Test System
Calibrating the Test System
After the test set has warmed up for two hours, it should be calibrated
before making any measurements. Refer to the network analyzer user’s
guide to determine the type of calibration for the measurements you
will be making.
You will need to calibrate each measurement path separately and store
the calibration as an instrument state in the network analyzer. Refer to
your network analyzer’s user’s guide for information on how to calibrate
and store instrument states. Refer to Figure 3-2 for an example of the
setup.
Example Setup
In this setup example, the following tests will be made
• return loss on the DUT's input and 2 output ports (A and B)
• insertion loss (or gain) between the DUT's input and port A
• insertion loss (or gain) between the DUT's input and port B
3-10
Chapter 3
Controlling the Test Set and Making Measurements
Calibrating the Test System
Figure 3-2
Calibrating the Test System
AGILENT 8720D
NETWORK ANALYZER
AGILENT 87050A OPTION K12
A
CALIBRATION PATHS
B
DUT
INPUT
For the best accuracy, you should perform a full two-port calibration
between the test set PORT 1 and PORT 2, and again between PORT 1
and PORT 4. You need to save the calibrations as instrument states.
See your analyzer user’s guide for information on calibrations and
saving instrument states.
NOTE
When performing a full two-port calibration and making subsequent
measurements, you must use the transfer switch internal to the
network analyzer to change the RF signal path direction. Do not use the
test set to change the direction of the RF signal path when you are
using a full two-port calibration. Doing so will render the calibration
invalid.
Chapter 3
3-11
Controlling the Test Set and Making Measurements
Making Measurements
Making Measurements
The following examples assume that you are using a parallel port
connection with an 8720D, with the test set’s parallel address set to 0.
See “Setting the Test Set Address Switch” on page -9 for information on
setting the test set's address.
Measuring Transmission
Refer to Figure 3-3 for the following discussion. With the 8720D set to
measure forward transmission (S21), the analyzer's RF source is being
output through the analyzer's PORT 1, and PORT 2 is set to receive the
RF signal.
By using the following commands, you will connect PORT 1 of the test
set to the REFLECTION port, and you will connect PORT 2 of the test
set to the TRANSMISSION port. You will thus be measuring forward
transmission through the device under test when measuring S21. This
will provide you with gain or insertion loss information.
OUTPUT 716;"PARALGPIO;"
OUTPUT 716;"PARAOUT0;"
OUTPUT 716;"PARALGPIO;"
OUTPUT 716;"PARAOUT27;"
If directly controlling the test set by way of the GPIB interface, use the
following GPIB commands:
OUTPUT 712;"refl_01"
OUTPUT 712;"tran_02"
3-12
Chapter 3
Controlling the Test Set and Making Measurements
Making Measurements
Figure 3-3
Controlling the Test Set
Measuring Reflection
By leaving the DUT connected as in Figure 3-3 and setting the network
analyzer to measure S11, you can measure reflection or return loss.
Chapter 3
3-13
Controlling the Test Set and Making Measurements
Example Program
Example Program
An example program is provided in this section to aid you in creating a
program specific to your DUT. This program is written in HP BASIC
and is for use with an HP 9000 series 200/300/700 computer. The
program is briefly described below and listed following the description.
Control
This program demonstrates the control of the 87050A Option K12 via
GPIB and/or the parallel port. This program can be used to manually
select any port combination.
The Control program will first ask the user which method will be used
to control the 87050A Option K12 either GPIB or parallel port. It will
then ask which ports are to be enabled. The port entries are done in
pairs (reflection/transmission), with the numbers in the pair separated
by a comma. The numbers may range from 0 through 12 for the test
ports. For example, the entry of "2,5" will connect the REFLECTION
port to PORT 2 and the TRANSMISSION port to PORT 5. The program
is a continuous loop. Press STOP to end program execution.
3-14
Chapter 3
Controlling the Test Set and Making Measurements
Example Program
The Control Program
10
! RE-SAVE "control"
20
! CONTROL: This example program allows "manual"
control of the
30
!
87050A Option K12 via the parallel
port of the
40
!
8720D network analyzer or via GPIB
directly.
50
!
60
! NOTE:
You MUST select either GPIB control or
Parallel Port
70
!
control. If Parallel Port via the
8720D is
80
!
selected, this program will return the
analyzer to
90
!
LOCAL control after the switches are set.
100
!
110
!
120
!
130
!
140
!
150
!
160
!
170
!
180
!
190
!
200
!
210
Nwa_addr=716
220
Ts_addr=712
230
!
240
CLEAR SCREEN
250
PRINT USING "3/,K,/";"*****
FOR 87050A-K12 MANUAL CONTROL
Chapter 3
Set the GPIB address as required below.
The 87050A Option K12 can be set to
one of two
Parallel Port addresses.
Set_switches)
This program (SUB
assumes it is set to address 00.
Copyright: Agilent Technologies Inc.
Palo Alto, CA 94304
Developed at Microwave Instruments Division
Santa Rosa, CA
Revision A.01.00 19 January 2000 mf
DEMONSTRATION PROGRAM
*****"
3-15
Controlling the Test Set and Making Measurements
Example Program
260
PRINT "Either direct GPIB control of the 87050A-K12
may be selected (h),"
270
PRINT "or indirect control via the Parallel Port (p)
of the 8720D"
280
REPEAT
290
Answ$="p"
300
OUTPUT 2;Answ$&CHR$(255)&"H";
310
BEEP 300,.1
320
INPUT "Select desired test-set control. GPIB or
Parallel Port? (Enter H or P)",Answ$
330
Answ$=UPC$(Answ$[1,1])
340
UNTIL Answ$="P" OR Answ$="H"
350
Controller$=Answ$
360
!
370
ABORT 7
380
CLEAR SCREEN
390
IF Controller$="P" THEN
400
Addr=Nwa_addr ! Assign address to the analyzer
410
PRINT "Test set is being controlled via Parallel
Port;8720D, address =";Addr
420
ELSE
430
Addr=Ts_addr
440
PRINT "Test set is being controlled directly via
GPIB. GPIB address =";Addr
450
END IF
460
Isc=Addr DIV 100 ! Interface Select Code
470
!
480
PRINT USING "/,K,/";RPT$("-",77)
490
PRINT "For manual operation of this switch box, enter
TWO numbers separated by"
500
PRINT "a comma (,). The two numbers represent the
port numbers directed to the"
510
PRINT "Reflection Port and Transmission Port,
respectively. Setting a port to"
520
PRINT "’0’ will terminate the corresponding port."
530
PRINT "Unless both numbers are ’0’, the two values
cannot be the same."
3-16
Chapter 3
Controlling the Test Set and Making Measurements
Example Program
540
PRINT "To terminate the program, press STOP or PAUSE."
550
PRINT
560
PRINT "Example: 1,2 sets the test set paths Port 1 to
Reflection Port and"
570
PRINT " Port 2 to Transmission Port."
580
PRINT " 10,1 sets the test set paths Port 10 to
Reflection Port and"
590
PRINT " Port 1 to Transmission Port."
600
PRINT " 0,5 sets the test set paths Reflection Port
terminated and"
610
PRINT "
620
PRINT " 0,0 sets the test set paths to
terminate both Reflection and"
630
PRINT " Transmission ports."
640
PRINT " all_term sets the test set paths to
terminate all ports"
650
PRINT " reset sets the test set to know paths,
i.e., Reflection Port"
660
PRINT " to Port 1 and Transmission Port to Port 2."
670
PRINT
680
PRINT "If you have selected GPIB you may also check
the model number of"
690
PRINT "the unit by typing ’model’, or check the
number of times the switch"
700
PRINT "has switched by typing ’switch ##’, where ## is
the number of the"
710
PRINT "desired switch."
720
LOOP
730
Refl=0
740
Trans=0
750
BEEP 500,.1
760
Port 5 to Transmission Port."
LINPUT "Enterthe Reflection Port/Transmission Port
selections separated by commas:e.g. 1,2
",Command$
770
Current_pos=POS(Command$,",")
780
Command_length=LEN(Command$)
790
Counter=0
800
Cmd$=Command$
Chapter 3
3-17
Controlling the Test Set and Making Measurements
Example Program
810
820
IF Current_pos>0 THEN
WHILE Current_pos>0
830
Command_length=LEN(Command$)
840
Current$=Command$[1,(Current_pos-1)]
850
Command$=Command$[(Current_pos+1),
Command_length]
860
Current_pos=POS(Command$,",")
870
Set_no=VAL(Current$)
880
SELECT Counter
890
CASE 0
900
Refl=Set_no
910
CASE ELSE
920
PRINT TABXY(1,29),"Too many numbers
entered. Try again! Entered ";Cmd$
930
BEEP 500,.1
940
WAIT 1
950
END SELECT
960
Counter=Counter+1
970
END WHILE
980
Set_no=VAL(Command$)
990
Trans=Set_no
1000
PRINT TABXY(1,29)," "
1010
IF NOT (((Refl<>Trans) OR (Refl=0 AND Trans=0)
OR (Trans=12 AND Refl=12)) AND Refl<13 AND
Trans<17 AND Refl>=0 AND Trans>=0) THEN
1020
DISP "Port selections MUST be different if
non-zero; Range= 0 to 12. Entered
"""&Current$&","&Command$&""""
1030
BEEP 1500,.3
1040
WAIT 5
1050
1060
1070
1080
1090
3-18
ELSE
Set_switches(Addr,"REFL",VAL$(Refl),
Controller$)
! Sets Ports
Set_switches(Addr,"TRANS",VAL$(Trans),
Controller$)
! Sets Ports
Chapter 3
Controlling the Test Set and Making Measurements
Example Program
1100
PRINT TABXY(1,28)," "
1110
PRINT TABXY(1,28),"Current Port = ";Refl;"
to Reflection Port"
1120
PRINT TABXY(1,29)," "
1130
PRINT TABXY(1,29),"Current Port = ";Trans;"
to Transmission Port"
1140
1150
END IF
ELSE
1160
SELECT UPC$(Command$)
1170
CASE "MODEL"
1180
OUTPUT 712;"idn?"
1190
ENTER 712;Model$
1200
PRINT TABXY(1,29)," "
1210
1220
1230
PRINT TABXY(1,29),"model number is ";Model$
CASE "ALL_TERM"
IF Controller$="H" THEN
1240
Output_cmd$="*all_term"
1250
OUTPUT Addr;Output_cmd$
1260
ELSE
1270
Output_cmd$="51"
1280
OUTPUT Addr;"PARALGPIO;"
1290
OUTPUT Addr;"PARAOUT"&Output_cmd$&";"
1300
END IF
1310
PRINT TABXY(1,28)," "
1320
PRINT TABXY(1,29)," "
1330
1340
1350
PRINT TABXY(1,28),"All ports are terminated
into 50 ohms."
CASE "RESET"
IF Controller$="H" THEN
1360
1370
1380
Output_cmd$="*rst"
OUTPUT Addr;Output_cmd$
sent via GPIB
ELSE
1390
Output_cmd$="52"
1400
OUTPUT Addr;"PARALGPIO"
Chapter 3
!
3-19
Controlling the Test Set and Making Measurements
Example Program
1410
OUTPUT Addr;"PARAOUT"&Output_cmd$&";"!
sent via Centronics Port
1420
END IF
1430
PRINT TABXY(1,28)," "
1440
PRINT TABXY(1,29)," "
1450
PRINT TABXY(1,28),"Test set reset; Port 1
to REFL & Port 2 to TRANS."
1460
CASE ELSE
1470
Command$=UPC$(Command$)
1480
IF POS(Command$,"SWITCH") THEN
1490
Nu$=TRIM$(Command$[8,Command_length])
1491
SELECT Nu$
1492
CASE
"11","12","14","15","16","17",
"50" TO "61"
1510
OUTPUT 712;"sw"&Nu$;"?"
1520
ENTER 712;Count$
1530
PRINT TABXY(1,30)," "
1540
PRINT TABXY(1,30),"switch number
";Nu$;" has ";Count$
1550
CASE ELSE
1560
DISP "Installed switch numbers are
11, 12, 14, 15, 16, 17, 50
thru 61. Try again!
Entered ";Command$
1570
BEEP 300,.1
1580
WAIT 3
1590
END SELECT
1600
ELSE
1610
DISP "Unknown command """;Command$;""""
1620
BEEP 300,.1
1630
WAIT 3
1640
END IF
1650
END SELECT
1660
END IF
1670
END LOOP
1680
END
3-20
Chapter 3
Controlling the Test Set and Making Measurements
Example Program
1690
!
1700
SUB Set_switches(Addr,First_parm$,Second_parm$,
Controller$)
1710
!====================================================
1720
!
1730
!----------------------------------------------------
1740
!
1750
!
1760
!
1770
!
Controller$: [P|H]
H=GPIB
1780
!
First_parm$: [REFL|TRANS]
1790
!
Second_parm$: [0|1|2|...16]
PURPOSE: To set the 87050A Option K12
switches.
PARAMETERS:
P=Parallel via 8720D or
1800
! Addr: GPIB addr of 8720D or
depending
87050A-K12
1810
!
on H or P above.
1820
!----------------------------------------------------
1830
!
1840
!
1850
!
1860
!
1870
!
1880
!
1890
!====================================================
DESCRIPTION:
Commands can be sent via Centronics (Parallel) port
or via GPIB
Choice depends upon variable Controller$ [P|H]
1900 Set_switches:
1910
!
!
1920
SELECT UPC$(TRIM$(First_parm$))
1930
CASE "REFL"
1940
SELECT UPC$(TRIM$(Second_parm$))
1950
CASE "0","TERMINATE REFLECTION"
1960
Hswitch_code$="*r_term"
1970
Pswitch_code$="25"
1980
CASE "1","PORT 1 TO REFLECTION"
1990
Hswitch_code$="refl_01"
Chapter 3
3-21
Controlling the Test Set and Making Measurements
Example Program
2000
Pswitch_code$="0"
2010
CASE "2","PORT 2 TO REFLECTION"
2020
Hswitch_code$="refl_02"
2030
Pswitch_code$="1"
2040
CASE "3","PORT 3 TO REFLECTION"
2050
Hswitch_code$="refl_03"
2060
Pswitch_code$="2"
2070
CASE "4","PORT 4 TO REFLECTION"
2080
Hswitch_code$="refl_04"
2090
Pswitch_code$="3"
2100
CASE "5","PORT 5 TO REFLECTION"
2110
Hswitch_code$="refl_05"
2120
Pswitch_code$="4"
2130
CASE "6","PORT 6 TO REFLECTION"
2140
Hswitch_code$="refl_06"
2150
Pswitch_code$="5"
2160
CASE "7","PORT 7 TO REFLECTION"
2170
Hswitch_code$="refl_07"
2180
Pswitch_code$="6"
2190
CASE "8","PORT 8 TO REFLECTION"
2200
Hswitch_code$="refl_08"
2210
Pswitch_code$="7"
2220
CASE "9","PORT 9 TO REFLECTION"
2230
Hswitch_code$="refl_09"
2240
Pswitch_code$="8"
2250
CASE "10","PORT 10 TO REFLECTION"
2251
Hswitch_code$="refl_10"
2252
Pswitch_code$="9"
2255
CASE "11","PORT 11 TO REFLECTION"
2256
Hswitch_code$="refl_11"
2257
Pswitch_code$="10"
2260
CASE "12","PORT 12 TO REFLECTION"
2262
Hswitch_code$="refl_12"
2263
Pswitch_code$="11"
3-22
Chapter 3
Controlling the Test Set and Making Measurements
Example Program
2287
CASE ELSE
2288
DISP "Unrecognized switched port
parameters; """&First_parm$&""" to
"""&Second_parm$&""""
2289
BEEP 1500,.1
2290
WAIT 2
2291
END SELECT
2292
CASE "TRANS"
2293
SELECT UPC$(TRIM$(Second_parm$))
2294
CASE "0","TERMINATE TRANSMISSION"
2295
Hswitch_code$="*t_term"
2296
Pswitch_code$="50"
2297
CASE "1","PORT 1 TO TRANSMISSION"
2298
Hswitch_code$="tran_01"
2299
Pswitch_code$="26"
2300
CASE "2","PORT 2 TO TRANSMISSION"
2301
Hswitch_code$="tran_02"
2302
Pswitch_code$="27"
2303
CASE "3","PORT 3 TO TRANSMISSION"
2304
Hswitch_code$="tran_03"
2305
Pswitch_code$="28"
2306
CASE "4","PORT 4 TO TRANSMISSION"
2307
Hswitch_code$="tran_04"
2308
Pswitch_code$="29"
2309
CASE "5","PORT 5 TO TRANSMISSION"
2310
Hswitch_code$="tran_05"
2311
Pswitch_code$="30"
2312
CASE "6","PORT 6 TO TRANSMISSION"
2313
Hswitch_code$="tran_06"
2314
Pswitch_code$="31"
2315
CASE "7","PORT 7 TO TRANSMISSION"
2316
Hswitch_code$="tran_07"
2317
Pswitch_code$="32"
2318
Chapter 3
CASE "8","PORT 8 TO TRANSMISSION"
3-23
Controlling the Test Set and Making Measurements
Example Program
2319
Hswitch_code$="tran_08"
2320
Pswitch_code$="33"
2321
CASE "9","PORT 9 TO TRANSMISSION"
2322
Hswitch_code$="tran_09"
2323
Pswitch_code$="34"
2324
CASE "10","PORT 10 TO TRANSMISSION"
2325
Hswitch_code$="tran_10"
2326
Pswitch_code$="35"
2327
CASE "11","PORT 11 TO TRANSMISSION"
2328
Hswitch_code$="tran_11"
2329
Pswitch_code$="36"
2330
CASE "12","PORT 12 TO TRANSMISSION"
2331
Hswitch_code$="tran_12"
2332
Pswitch_code$="37"
2345
CASE ELSE
2346
DISP "Unrecognized switched port
parameters; """&First_parm$&""" to
"""&Second_parm$&""""
2347
BEEP 300,.1
2348
WAIT 2
2349
END SELECT
2350
2351
2352
END SELECT
!
IF Controller$="H" THEN
2353
Output_cmd$=TRIM$(Hswitch_code$)
2354
OUTPUT Addr;Output_cmd$ ! sent via GPIB
2355
ELSE
2356
Output_cmd$=VAL$(VAL(Pswitch_code$))
2357
OUTPUT Addr;"PARALGPIO;"
2358
OUTPUT Addr;"PARAOUT"&Output_cmd$&";"! sent
via Centronics Port
2359
END IF
2360
WAIT .1
2361
3-24
SUBEND
Chapter 3
4
Front and Rear Panels
4-1
Front and Rear Panels
Introduction
Introduction
This chapter contains information on the ports and switches found on
the front and rear panels of the test set.
This chapter is divided into two sections:
• Front Panel
• Rear Panel
4-2
Chapter 4
Front and Rear Panels
Front Panel
Front Panel
Figure 4-1
Front Panel Features
REFLECTION
(APC 3.5)
TRANSMISSION
(APC 3.5)
Port Connection
Status LCD
Line Power Switch
PORTS 1 – 12
(APC 3.5)
Ground Connector
The Port Connection Status LCD
The port connection status LCD provides visual feedback of which
port(s) are connected to the REFLECTION and TRANSMISSION ports
of the test set. When the LCD displays a path connection, all other
corresponding test ports are internally terminated in 50Ω .
The REFLECTION and TRANSMISSION Ports
The REFLECTION and TRANSMISSION ports are 50Ω, 3.5-mm
connectors. A 50Ω cable connects directly to the
REFLECTION/TRANSMISSION port or PORT 1/PORT 2 of the
network analyzer using the cables (5062-6682) that were shipped with
your test set.
CAUTION
Check your analyzer’s documentation for damage limits to the ports.
Make sure that your test setup will not cause those limits to be
exceeded.
Chapter 4
4-3
Front and Rear Panels
Front Panel
Line Power Switch
The test set line power switch is located at the bottom left corner of the
front panel. The line power switch turns the test set either on or off.
The line switch disconnects the mains circuits from the mains supply
after the EMI filters and before other parts of the instrument.
PORTS 1 – 12
PORTS 1 through 12 are 50Ω, 3.5-mm connectors that are used to
connect to the device under test.
CAUTION
Do not input more than 1 watt (RF and dc combined) to these ports, or
damage to the internal RF switches or the analyzer may occur.
The Ground Connector
The ground connector provides a convenient front panel ground
connection for a standard banana plug.
4-4
Chapter 4
Front and Rear Panels
Rear Panel
Rear Panel
Figure 4-2
Rear Panel Features
Parallel Port Input
GPIB Connector
Parallel Port Output
Printer Test Set Switch
Line Module
Address Switch
The Parallel Port Input Connector
This input port is connected to the parallel port of the network
analyzer. The analyzer provides control signals that drive the switches
inside the test set. In pass-through mode, it also accepts signals
required to drive a printer.
The Parallel Port Output Connector
The output from this connector is used to either control another test set,
or to control a printer, depending upon how the Printer/Test Set switch
is set.
The Printer/Test Set Switch
This switch determines the function of the Parallel Port Output
connector. When switched to Printer, the Parallel Port Output will
pass-through printer driver signals. When switched to Test Set, an
additional test set can be controlled from the Parallel Port Output
connector.
Chapter 4
4-5
Front and Rear Panels
Rear Panel
GPIB Connector
This connector allows the test set to be connected directly to a
controller. See Figure 3-3 on page 3-12.
Address Switch
The address switch sets the GPIB and/or parallel address of the test
set. See “Setting the Test Set Address Switch” on page -9 for
information.
Line Module
The line module contains the power cable receptacle and the line fuse.
The line module is an autoranging input and is designed to be used
with an ac power source with a nominal voltage of either 115 V or
230 V.
Power Cables
The line power cable is supplied in one of several configurations,
depending on the destination of the original shipment.
Each instrument is equipped with a three-wire power cable. When
connected to an appropriate ac power receptacle, this cable grounds the
instrument chassis. The type of power cable shipped with each
instrument depends on the country of destination. See Figure 4-3 on
page 4-7 for the part numbers of these power cables. Cables are
available in different lengths. Check with your nearest Agilent
Technologies service center for descriptions and part numbers of cables
other than those described in Figure 4-3. A list of
Agilent Technologies sales or service offices is located on page 7-3.
CAUTION
Always use the three-prong ac power cord supplied with this product.
Failure to ensure adequate grounding by not using this cord may cause
damage to the product.
WARNING
This is a Safety Class I product (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 the instrument, is likely to make
the instrument dangerous. Intentional interruption of the
protective cover is prohibited.
4-6
Chapter 4
Front and Rear Panels
Rear Panel
Figure 4-3
Power Cable and Line (Mains) Plug Part Numbers
a
Plug Type
250V
Cable
Part
Number
Plug b
Length
Description cm (in.)
Cable
Color
8120-8705
Straight
BS 1363A
229 (90)
Mint Gray
8120-8709
90
229 (90)
Mint Gray
8120-1369
Straight
AS 3112
210 (79)
Gray
8120-0696
90
200 (78)
Gray
8120-1378
Straight
NEMA 5-15P
203 (80)
Jade Gray
8120-1521
90
203 (80)
Jade Gray
8120-4753
Straight
NEMA 5-15P
229 (90)
Gray
8120-4754
90
229 (90)
Gray
8120-1689
Straight
CEE 7/VII
200 (78)
Mint Gray
8120-1692
90
200 (78)
Mint Gray
8120-2104
Straight
SEV Type 12
200 (78)
Gray
8120-2296
90
200 (78)
Gray
8120-2956
Straight
SR 107-2-D
200 (78)
Gray
8120-2957
90
200 (78)
Gray
8120-4211
Straight
IEC 83-B1
200 (78)
Mint Gray
8120-4600
90
200 (78)
Mint Gray
8120-5182
Straight
SI 32
200 (78)
Jade Gray
8120-5181
90
200 (78)
Jade Gray
E
L
N
250V
E
L
N
125V
E
N
L
125V
For Use
in Country
Option 900
United Kingdom, Hong
Kong, Cyprus, Nigeria,
Singapore, Zimbabwe
Option 901
Argentina, Australia,
New Zealand, Mainland
China
Option 903
United States, Canada,
Brazil, Colombia,
Mexico,Philippines,
Saudi Arabia, Taiwan
Option 918
Japan
E
N
L
250V
E
N
L
230V
Option 902
Continental Europe,
Central African Republic,
United Arab Republic
Option 906
Switzerland
E
L
N
220V
N
L
Option 912
Denmark
E
250V
Option 917
South Africa, India
E
L
N
250V
Option 919
Israel
E
N
L
a. E =earth ground, L = line, and N = neutral.
b. Plug identifier numbers describe the plug only. The Agilent Technologies part number is for the complete cable assembly.
Chapter 4
4-7
Front and Rear Panels
Rear Panel
The Line Fuse
The line fuse, as well as a spare, reside within the line module.
Figure 4-4 illustrates where the fuses are and how to access them.
Available Fuses
United States (115 V orientation)
Fuse (F 3 A/250 V, 2110-0780) U.L. listed and CSA certified
Europe (230 V orientation)
Fuse (F 3.15 A/250 V, 2110-0655) IEC certified and U.L. recognized
Figure 4-4
Location of Line Fuses
4-8
Chapter 4
5
Specifications and Characteristics
5-1
Specifications and Characteristics
Performance Specifications and Characteristics
Performance Specifications and
Characteristics
Table 5-1
Option K12 Performance Specifications and Characteristics
Parameter
Frequency Range
Specification
50 MHz to 20 GHz
Isolationa
500 MHz up to 20.0 GHz
≥100 dB
Return Loss (Switch Path ON)
50.0 MHz up to 3.0 GHz
≥18 dB
3.0 GHz to 12.4 GHz
≥12 dB
12.4 GHz to 20 GHz
≥10 dB
Return Loss (Switch Path OFF)
50.0 MHz up to 3.0 GHz
≥22 dB (Typical)
3.0 GHz to 12.4 GHz
≥14 dB (Typical)
12.4 GHz to 20 GHz
≥12 dB (Typical)
Insertion Loss
50 MHz up to 3.0 GHz
≤2.0 dB
3.0 GHz to 6.0 GHz
≤3.0 dB
6.0 GHz to 12.4 GHz
≤4.0 dB
12.4 GHz to 20 GHz
≤5.0 dB
Phase Deviation
Reflection Port to Ports 1–12
±15 ° @6 GHz (Typical)
±40 ° @20 GHz (Typical)
Transmission Port to Ports 1–12
±15 ° @6 GHz (Typical)
±40 ° @20 GHz (Typical)
Input Power Damage Level
>1 watt (RF + dc)
a. From Port-to-Port (1 through 12). Due to the limitations of the
8720D network analyzer, isolation is measured from
500 MHz to 20 GHz.
5-2
Chapter 5
Specifications and Characteristics
Environmental Characteristics
Environmental Characteristics
General
Conditions
ESD (electrostatic discharge) must be eliminated by use of static-safe
work procedures and an anti-static bench mat (such as a
92175T). Refer to Figure 2-3 on page 2-7.
Operating
Environment
For indoor use only
Altitude:
Up to 15,000 feet (4,572 meters)
Operating temperature: 0 °C to 55 °C
Maximum relative humidity: 80% for temperatures up to 31 °C
decreasing linearly to 50% relative humidity at 40 °C
Enclosure protection IP 20, according to IEC 529
This product is designed for use in INSTALLATION CATEGORY II,
and POLLUTION DEGREE 2, per IEC 101 and 664 respectively.
Non-Operating
Storage
Conditions
Temperature: –40 °C to 70 °C
Humidity:
0 to 90% relative at 65 °C (non-condensing)
Altitude:
0 to 15,240 meters (50,000 feet)
Chapter 5
5-3
Specifications and Characteristics
Physical Dimensions
Physical Dimensions
Weight
Cabinet
Dimensions
Net:
Approximately 9 kg (19.85 pounds)
Shipping:
Approximately 20 kg (44.10 pounds)
These dimensions exclude front and rear panel protrusions.
Height:
178 mm (7.02 inches)
Width:
425 mm (16.75 inches)
Depth:
500 mm (19.7 inches)
These dimensions are illustrated in Figure 5-1.
Figure 5-1
87050A Option K12 Physical Dimensions
500 mm
425 mm
178 mm
If you should need technical assistance, contact the nearest Agilent
Technologies sales or service office. A listing is located on page 7-3.
5-4
Chapter 5
6
Service
6-1
Service
Introduction
Introduction
This chapter contains information on the theory of operation, how to
verify the performance of your test set, how to troubleshoot it if
necessary, and a block diagram.
NOTE
Please read all applicable safety warnings and cautions in Chapter 7,
“Safety and Regulatory Information” before servicing the test set.
6-2
Chapter 6
Service
Performance Tests
Performance Tests
Performance testing consists of measuring insertion loss, return loss,
and isolation between all ports. For the most accurate measurements,
the use of an 8720D 50Ω network analyzer is recommended and its use
is assumed in these notes. Familiarity with RF/microwave
measurements is also assumed. The use of adapters may be required
and their effects should be accounted within the measurements.
Equipment Required
NOTE
•
8720D Network Analyzer
•
Test Port Extension Cables and Adapters
•
85052B Calibration Kit (50Ω, 3.5-mm)
•
909D or 00909-60006, 50Ω Load
Make a photocopy of the performance test record (later in this chapter)
to record the results of the performance tests.
There are no adjustments required for the 87050A Option K12 test set.
Set up the network analyzer with the following:
1. Number of points to 401
2. IF Bandwidth to 30 Hz
Perform a full two-port calibration from 50 MHz to 20 GHz at the ends
of two cables attached to the two test ports of the 8720D. The cable on
PORT 1 of the network analyzer should interface with the
TRANSMISSION or REFLECTION ports on the front panel of the test
set, and the cable on PORT 2 of the analyzer should interface with the
test ports (1 through 12) on the front panel of the test set.
NOTE
The isolation calibration routine is done with 16 averages.
NOTE
Throughout this manual, the following conventions are observed:
[Hardkeys] are labeled, front panel keys.
Softkeys are display-defined keys (in the menus).
Chapter 6
6-3
Service
Performance Tests
Insertion Loss
1. Connect the cable attached to PORT 1 of the network analyzer to the
TRANSMISSION port of the test set.
2. Connect the cable from PORT 2 of the network analyzer to PORT 1
of the test set.
3. Select the all_term command using the network analyzer by
pressing:
[SEQ] > [TTL I/O] > Parallel All Out > [51] > [X1]
This command will ensure that no conflicts will occur when selecting
the test set ports.
For complete information on controlling the test set, refer to
Chapter 3, “Controlling the Test Set and Making Measurements”, in
this manual.
NOTE
Reflection and transmission cannot be directed to the same port. If the
test set does not switch to the port you have selected, switch the other
port to either 1 or 4.
4. Select Transmission Port 1 by pressing:
[SEQ] > [TTL I/O] > Parallel All Out > [51] > [X1]
Enter the decimal value (D in Table 3-1, on page 3-6) to select the
port, then press:
[x1]
5. Check the status LCD on the test set to verify the port has been
selected.
6. On the network analyzer, press:
[MENU] > Trigger Menu > Single
Wait until the analyzer is finished taking a sweep, then press:
[SCALE REF] > Auto Scale >[MARKER]
6-4
Chapter 6
Service
Performance Tests
7. Using the front panel knob, locate the minimum value of the data
trace for the following frequency ranges:
• 50.0 MHz to 6.0 GHz
• 6.0 GHz to 12.4 GHz
• 12.4 GHz to 20.0 GHz
8. Write the minimum value in the Performance Test Record, on pages
6-10 through 6-14, for the port being measured.
9. Repeat steps 5 through 8 for the remaining test ports (2 through 12)
listed in the Performance Test Record, on pages 6-10 through 6-14.
10.After all transmission ports have been measured, move the cable
attached to the TRANSMISSION port to the REFLECTION port on
the test set. Repeat steps 4 through 9, but select the reflection ports
instead of the transmission ports.
Return Loss
This test will check the internal termination load of each port, and the
through match when the appropriate input port is terminated with a
50Ω load.
1. Connect the cable attached to PORT 1 of the analyzer to PORT 1 of
the test set.
2. Connect a 50Ω load to the TRANSMISSION port of the test set.
3. Select the all_term command using the network analyzer by
pressing:
[SEQ] > [TTL I/O] > Parallel All Out >[51] > [X1]
This command will ensure that no conflicts will occur when selecting
the test set ports.
4. Select Transmission Port 1 on the network analyzer by pressing:
[SEQ] >[TTL I/O] > Parallel All Out
This will turn the switching path on.
Enter the decimal value (D in Table 3-1, on page 3-6) to select the
port, then press:
[x1]
5. Check the status LCD to verify the port has been selected.
6. On the network analyzer press:
[MENU] > Trigger > Single
Wait until the analyzer is finished taking a sweep, then press:
[SCALE REF] > Auto Scale > [MARKER]
Chapter 6
6-5
Service
Performance Tests
7. Using the front panel knob, locate the maximum value of the data
trace for the following frequency ranges:
• 50.0 MHz to 3.0 GHz
• 3.0 GHz to 12.4 GHz
• 12.4 GHz to 20.0 GHz
8. Write the value in the Performance Test Record (pages 6-15 through
6-18) for the port being measured, under “Switch Path ON.”
9. Repeat the previous two steps (7 and 8) for the remaining ports
listed on pages 6-15 through 6-18 in the Performance Test Record,
under “Switch Path ON.”
10.Turn the switching path off by pressing:
[SEQ] > [TTL I/O] > Parallel Out All >[51] > [X1]
11.Using the front panel knob, locate the maximum value of the data
trace for the following frequency ranges:
• 50.0 MHz to 3.0 GHz
• 3.0 GHz to 12.4 GHz
• 12.4 GHz to 20.0 GHz
12.Write the value in the Performance Test Record, (pages 6-19 through
6-22) for the port being measured, under “Switch Path OFF.”
13.Repeat the previous two steps (11 and 12) for the remaining ports
listed on pages 6-19 through 6-22 in the Performance Test Record,
under “Switch Path OFF.”
14.After all the transmission ports have been measured, move the 50Ω
load to the REFLECTION port on the test set. Repeat steps 3
through 13, but select the reflection ports instead of the
transmission ports.
6-6
Chapter 6
Service
Performance Tests
Isolation
NOTE
Isolation needs to only be measured on adjacent ports. Two 50Ω loads
are required for this test.
1. Connect two (2) 50Ω loads to both the TRANSMISSION and
REFLECTION ports on the test set.
2. Turn the averaging on by pressing:
[AVG] > Averaging On
3. Connect the two cables (attached to the network analyzer) to
PORT 1 and PORT 2 of the test set. The exact order does not matter.
4. Select Reflection Port 1 on the network analyzer by pressing:
[SEQ] > [TTL I/O] > Parallel All Out
Enter the decimal value (D in Table 3-1, on page 3-6) to select the
port, then press:
[x1]
5. Repeat step 4, but select Transmission Port 2 on the network
analyzer. Check the status LCD on the test set for the port selected.
6. On the network analyzer, press:
[MENU] > Trigger Menu > Number of Groups > [16] > [X1]
Wait until the analyzer is finished making the measurement, then
press:
[SCALE REF] > Auto Scale > [MARKER]
7. Using the front panel knob, locate the maximum value of the data
trace for the 500 MHz to 20.0 GHz frequency range.
8. Write the maximum value in the Performance Test Record, on page
6-23, for the ports being measured.
9. Repeat steps 5 through 8 for the next two adjacent ports, 2 and 3.
Repeat again for ports 3 and 4, and then for ports 4 and 5, and so on
until you have tested ports 11 and 12.
This completes the Performance Testing instructions.
Chapter 6
6-7
Service
Performance Test Record
Performance Test Record
The following pages (Performance Test Record) are designed to be
duplicated and used as a template for either of the Transmission or
Reflection Ports during each of the performance tests (Insertion Loss,
Return Loss, and Isolation). At the top of each page, circle the
appropriate input port, Transmission or Reflection, and write in the
test date.
87050A Option K12 Test Record
Test Facility _______________________
Report Number ________________________
___________________________________
Date __________________________________
___________________________________
Date of Last System Calibration ________
___________________________________
_______________________________________
Tested by__________________________
Customer _____________________________
Model_____________________________
Serial Number ________________________
Ambient Temperature_____________°C
Relative Humidity_____________________%
Test Equipment Used Model Number
Trace Number
Cal Due Date
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
_________________
Special Notes:
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
6-8
Chapter 6
Service
Performance Test Record
87050A Option K12 Insertion Loss Test Record
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Insertion Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
≤2.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
50.0 MHz up to 3.0 GHz
Chapter 6
6-9
Service
Performance Test Record
87050A Option K12 Insertion Loss Test Record
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Insertion Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
≤3.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
3.0 GHz up to 6.0 GHz
6-10
Chapter 6
Service
Performance Test Record
87050A Option K12 Insertion Loss Test Record
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Insertion Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
≤4.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
6.0 GHz up to
12.4 GHz
Chapter 6
6-11
Service
Performance Test Record
87050A Option K12 Insertion Loss Test Record
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Insertion Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
≤5.00 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
±0.3 dB
12.4 GHz up to
20.0 GHz
6-12
Chapter 6
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path ON)
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Return Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
≥18 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
50.0 MHz up to 3.0 GHz
Switch Path ON
Chapter 6
6-13
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path ON)
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Return Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
3.0 GHz up to
12.4 GHz
Switch Path ON
6-14
Chapter 6
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path ON)
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Return Loss
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
≥10 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
12.4 GHz up to
20.0 GHz
Switch Path ON
Chapter 6
6-15
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path OFF)
Specification
(Typical)
Measured
Results
Measurement
Uncertainty
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
≥22 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
±1.5 dB
Test Description
Port
Return Loss
50.0 MHz up to 3.0 GHz
Switch Path OFF
6-16
Chapter 6
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path OFF)
Specification
(Typical)
Measured
Results
Measurement
Uncertainty
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
≥14 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Test Description
Port
Return Loss
3.0 GHz up to
12.4 GHz
Switch Path OFF
Chapter 6
6-17
Service
Performance Test Record
87050A Option K12 Return Loss Test Record (Sw. Path OFF)
Specification
(Typical)
Measured
Results
Measurement
Uncertainty
Transmission
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Reflection
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
≥12 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
±0.6 dB
Test Description
Port
Return Loss
12.4 GHz up to
20.0 GHz
Switch Path OFF
87050A Option K12 Isolation Test Record
Test Description
Port
Specification
Measured
Results
Measurement
Uncertainty
Port 1-2
Port 2-3
Port 3-4
Port 4-5
Port 5-6
Port 6-7
Port 7-8
Port 8-9
Port 9-10
Port 10-11
Port 11-12
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
≥100 dB
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
__________
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
±5 dB
Isolation
500.0 MHz up to
20.0 GHz
6-18
Chapter 6
Service
Replaceable Parts
Replaceable Parts
The following table contains the list of replaceable parts for the 87050A
Option K12 multiport test set. If any of these parts or assemblies are
replaced, you must run all performance tests to verify conformance to
specifications.
Table 6-1
Replaceable Parts
Replacement Part
Power Supply, 110W
Feet, Spring
Fuse, daughter control board
Fuse, 3A 250V (f), ac line module
Switch Assembly, 33314-024
Cover, top
Cover, bottom
Cover, side
Shield, power supply
Frame, rear
Strut, side
Frame, front
Foot
Trim, front frame side
Trim, top
Front Cap, strap handle
Rear Cap, strap handle
Standoff, rear panel
Handle, Strap
Front Handle Kit
Rack Mount Kit
Parallel Cable
Jumper Cable
LCD Cable
Assembly, switch
Rear Panel
Bracket, switch
RF Cable J53(59)-1
RF Cable J51(57)-2
RF Cable J12-2 to J11-6
RF Cable J12-6 to J11-2
RF Cable Odd FP Ports
Wire Harness, multiport*
Switch Support, 12 sw
Deck
Chapter 6
Part Number
Quantity
0950-2252
1460-1345
2110-0518
2110-0780
33314-60012
5002-1047
5002-1088
5002-3985
5002-4017
5021-5806
5021-5837
5022-1189
5041-9167
5041-9173
5041-9176
5041-9186
5041-9187
5041-9188
5063-9210
5063-9228
5063-9235
8120-6818
5062-6682
8120-8794
08711-60129
08720-00102
08720-00103
08720-20189
08720-20194
08720-20206
08720-20207
1
2
1
2
12
1
1
2
1
1
4
1
4
2
1
2
2
4
2
1
1
1
2
1
1
1
3
2
2
1
1
08720-20235
08720-60191
87050-00020
87050-00021
6
1
1
1
6-19
Service
Replaceable Parts
Table 6-1
Replaceable Parts (Continued)
Replacement Part
RF Cable, J50(56)-1*
RF Cable, J51(57)-1*
RF Cable, J52(58)-1*
RF Cable, J54(60)-1*
RF Cable, J55(61)-1*
RF Cable, J50(56)-2*
RF Cable, J52(58)-2*
RF Cable, J53(59)-2*
RF Cable, J54(60)-2*
RF Cable, J55(61)-2*
RF Cable, Reflection Port*
RF Cable, Transmission Port*
RF Cable, SW10-1 to SW50-2, SW11-1 to SW56-2*
RF Cable, SMA (f) to SMA (m)
RF Cable, N (m) to SMA (m)
RF Cable Even FP Ports
Wire Harness, 04c, 0.3m, 13f-06f
Wire Harness, 04c, 0.13m, 04f-04f
Wire Harness, 40c, 0.09m, 40f-40f
Fan Assembly 5 cfm
Daughter Control Board
Ribbon Cable, 16c 16f/16f
Controller Mother Board *
Front Panel Subassembly*
User’s and Service Guide*
Bracket, fan
Switch, 1p4t 26.5
Switch, 1p6t 26.5
Cable Assembly, ac line
Power Cord
Part Number
Quantity
87050-20131
87050-20132
87050-20133
87050-20134
87050-20135
87050-20136
87050-20137
87050-20138
87050-20139
87050-20140
87050-20141
87050-20142
87050-20145
87050-20345
87050-20346
87050-20347
87130-60021
87050-60022
87050-60023
87050-60027
87050-60324
87050-60055
87050-60175
87050-60179
87050-90102
87075-00005
87104-60001
87106-60009
87130-60007
See Figure 4-3
2
2
2
2
2
2
2
2
2
2
1
1
4
2
2
6
1
1
3
1
1
8
1
1
1
1
2
6
1
1
NOTE
The parts indicated (*) are unique to this special option. To order
replacement parts, please contact the Component Test PGU at
(707) 577-6802 with the part number, module/model number and option
number. If ordering parts through your local Agilent Technologies sales
or service office, specify that they are ordered through the Component
Test PGU.
NOTE
Special options are built to order, therefore long lead times may be
encountered when ordering replacement parts.
NOTE
Before replacing an assembly or board, inspect for obvious, easily
repaired defects such as bent pins on ICs or cold solder joints.
6-20
Chapter 6
Service
Troubleshooting
Troubleshooting
This section contains information on troubleshooting the test set to the
assembly level only. By following these procedures you should be able to
determine whether the power supply, front panel, or main switch board
need replacing. A block diagram is included at the end of this section as
an aid in troubleshooting.
The theory of operation information can be found starting on page 6-24.
General Troubleshooting Notes
WARNING
Always turn the instrument power off before removing or
installing an assembly.
NOTE
If you need to disassemble the instrument, be sure to work at an
antistatic workstation and use a grounded wrist strap to prevent
damage from electrostatic discharge (ESD). See Figure 2-3 on page 2-7.
Troubleshooting Power Supply Problems
Turn the instrument on. Check the condition of the LCD on the front
panel:
1. If the LCD is off, check the main fuse located in the power supply
filter at the rear of the instrument. Refer to Figure 4-4 on page 4-8.
2. If the fuse is in working order and the LCD is still off, check the
cable and connections between the main board and front panel
board.
3. If the cable and connections are working and the LCD is still off,
there is still a possibility that the power supply is not supplying the
necessary +24 V, +12 V, and +5 V to the main board.
Disconnect the dc power cable from the power supply to the main
switch board and measure the voltages. They should be +24 V,
+12 V, and +5 V. If not, replace the power supply.
Chapter 6
6-21
Service
Troubleshooting
Troubleshooting the Front Panel Display Board
Turn the instrument power on and check the following:
1. Check the condition of each of the switching paths by issuing
commands to switch each of the paths to either the transmission or
reflection path. Ensure that the LCD indicates the appropriate path.
2. If the LCD indicates a wrong path, the problem can lie with either
the daughter board or the main switch board. Determine where the
problem is by measuring the RF path and the +24 V control voltage.
3. If the LCD does not display the proper path, check to see if the RF
path has been switched. If the problem lies with the daughter board,
replace it.
Troubleshooting the Controller and Switch Driver Boards
Turn the instrument power on. Check the condition of each of the
switching paths by issuing commands to switch each of the paths to
either the transmission or reflection path. Check each of the RF paths
for connection. If an RF path is not connected to the necessary port or
terminated in 50Ω, replace the controller and switch driver board.
Refer to Figure 6-1 for a block diagram of the major components and the
switching paths of the 87050A Option K12.
6-22
Chapter 6
Figure 6-1
Power
Supply
Driver
Daughter
Board
Controller Interface
Mother Board
87050A Option K12 Block Diagram
Chapter 6
Display LCD
Board
J11
J12
50 Ω
50 Ω
5
3
2
J15
1
J16
C
2
3
4
5
1
6
J14
C
2
3
4
5
6
1
J58-1
J57-1
J61-1
J60-1
J59-1
J56-1
J55-1
J52-1
J51-1
J53-1
J54-1
J50-1
1
1
1
J51
2
2
1
J52
3
2
1
J53
4
2
1
J54
5
2
1
J55
6
2
3
J17
4
5
6
1
J56
2
1
J57
7
Test Ports
8
2
J17-1
J17-4
J16-1
J16-4
1
J58
9
2
1
J59
10
2
C
1
J55-2
J52-2
J51-2
J50-2
J53-2
J54-2
2
6
2
3
4
5
6
J61-2
J58-2
J57-2
J59-2
J60-2
J56-2
J17-2
J17-3
J16-2
J16-3
1
2
J60
11
1
2
J61
12
Transmission
6-23
Service
Troubleshooting
Reflection
2
3
C
2
J14-6
J14-1
J14-2
J17-6
J14-5
J14-4
J14-3
J17-5
J15-6
J15-1
J15-2
J16-6
J15-5
J15-4
J15-3
J16-5
J50
50 Ω
50 Ω
5
6
Service
Theory of Operation
Theory of Operation
The theory of operation begins with a general description of the
87050A Option K12 multiport test set. This is followed by more
detailed operating theory. The operation of each group is described
briefly, to the assembly level only. Detailed component level circuit
theory is not provided.
System Theory
The test set consists of three main components: a power supply, a front
panel display, and a controller interface mother board. The purpose of
the power supply is to provide power to both the front panel display and
the main switch board. The front panel display serves to indicate the
switching paths to the user. Finally, the controller interface mother
board does the actual switching between the different ports.
A1 Power Supply Theory
The switching power supply provides regulated dc voltages to power all
assemblies in the test set. A dc cable provides power to the main switch
board. A connector from the main switch board to the front panel
display provides dc power and control signals to the front panel. The
power supply provides the following supplies: +24 V, +12 V, and +5 V.
A2 Front Panel Display Theory
The front panel display consists of an LCD. The LCD is divided into a
reflection line and a transmission line. The reflection line indicates
which one of the sixteen ports is connected to the REFLECTION port.
The transmission line indicates which one of the sixteen ports is
connected to the TRANSMISSION port. Control signals and dc power
are provided by a cable connected to the main switch board.
A3 Controller Board (Mother Board) and Switch Driver Board
(Daughter Board) Theory
Refer to Figure 6-1, on page 6-24, for the following discussion.
The mother and daughter boards provide the bias for the switching
paths for the various test ports to the TRANSMISSION and
REFLECTION ports. The front panel display contains an LCD that
indicates the switched ports. A particular test port (1 through 12) can
be in one of three states. The three states are
1. switched to the forward path
2. switched to the reverse path
3. terminated in 50Ω
6-24
Chapter 6
Service
Theory of Operation
When a port is not connected, it is automatically terminated in 50Ω .
The test set consists of twelve (12) 1-by-2 switches, four (4) 1-by-6
switches, and two (2) 1-by-4 switches. The 1-by-2 switches divide each
of the input ports (1 through 12) into two separate paths, the
transmission path or the reflection path.
Each path, transmission or reflection, is routed to a bank of two (2)
1-by-6 switches. Each bank of switches is routed to a single 1-by-4
switch, where it becomes either the TRANSMISSION port or the
REFLECTION port.
All switches are mechanical and are biased according to the necessary
switching path. A user interface, through the GPIB and parallel ports,
converts the necessary input signals to the control signals, which then
control the switching paths.
Chapter 6
6-25
Service
Theory of Operation
6-26
Chapter 6
7
Safety and Regulatory Information
7-1
Safety and Regulatory Information
Introduction
Introduction
Review this product and related documentation to familiarize yourself
with safety markings and instructions before you operate the
instrument. This product has been designed and tested in accordance
with international standards.
Cleaning Instructions
Clean the cabinet using a damp cloth only.
Shipping Instructions
Always transport or ship the instrument using the original packaging if
possible. If not, comparable packaging must be used.
7-2
Chapter 7
Safety and Regulatory Information
Introduction
Agilent Technologies Sales and Service Offices
UNITED STATES
Instrument Support Center
Agilent Technologies
(800) 403-0801
EUROPEAN FIELD OPERATIONS
Headquarters
Agilent Technologies S.A.
150, Route du Nant-d’Avril
1217 Meyrin 2/ Geneva
Switzerland
(41 22) 780.8111
France
Agilent Technologies France
1 Avenue Du Canada
Zone D’Activite De
Courtaboeuf
F-91947 Les Ulis Cedex
France
(33 1) 69 82 60 60
Germany
Agilent Technologies GmbH
Agilent Technologies Strasse
61352 Bad Homburg v.d.H
Germany
(49 6172) 16-0
Great Britain
Agilent Technologies Ltd.
Eskdale Road, Winnersh
Triangle Wokingham, Berkshire
RG41 5DZ England
(44 118) 9696622
INTERCON FIELD OPERATIONS
Headquarters
Agilent Technologies
3495 Deer Creek Rd.
Palo Alto, CA 94304-1316
USA
(415) 857-5027
Japan
Agilent Technologies Japan, Ltd.
Measurement Assistance Center
9-1, Takakura-Cho, Hachioji-Shi,
Tokyo 192-8510, Japan
TEL (81) -426-56-7832
FAX (81) -426-56-7840
Australia
Agilent Technologies Australia
Ltd.
31-41 Joseph Street
Blackburn, Victoria 3130
(61 3) 895-2895
Canada
Agilent Technologies (Canada)
Ltd.
17500 South Service Road
Trans-Canada Highway
Kirkland, Quebec H9J 2X8
Canada
(514) 697-4232
Singapore
Agilent Technologies
Singapore (Pte.) Ltd.
150 Beach Road
#29-00 Gateway West
Singapore 0718
(65) 291-9088
Taiwan
Agilent Technologies Taiwan
8th Floor, H-P Building
337 Fu Hsing North Road
Taipei, Taiwan
(886 2) 712-0404
China
China Agilent Technologies
38 Bei San Huan X1 Road
Shuang Yu Shu
Hai Dian District
Beijing, China
(86 1) 256-6888
Chapter 7
7-3
Safety and Regulatory Information
Safety Information
Safety Information
Warnings
WARNING
The WARNING notice denotes a hazard. It calls attention to a
procedure, practice, or the like, that, if not correctly performed
or adhered to, could result in personal injury. Do not proceed
beyond a WARNING notice until the indicated conditions are
fully understood and met.
Warnings applicable to this instrument are:
WARNING
No operator serviceable parts inside. Refer servicing to
qualified personnel. To prevent electrical shock, do not remove
covers.
WARNING
If this instrument is not used as specified, the protection
provided by the equipment could be impaired. This instrument
must be used in a normal condition (in which all means for
protection are intact) only.
WARNING
For continued protection against fire hazard replace line fuse
only with same type and rating:
• United States—F 3A/250V, 2110-0780
• Europe—F 3.15A/250V, 2110-0655
The use of other fuses or material is prohibited.
WARNING
This is a Safety Class I product (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 the instrument, is likely to make
the instrument dangerous. Intentional interruption is
prohibited.
WARNING
The power cord is connected to internal capacitors that may
remain live for 5 seconds after disconnecting the plug from its
power supply.
WARNING
These 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.
7-4
Chapter 7
Safety and Regulatory Information
Safety Information
WARNING
The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the instrument from all voltage
sources while it is being opened.
Cautions
CAUTION
The CAUTION notice denotes a hazard. It calls attention to an
operating procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in damage to the product or loss of
important data. Do not proceed beyond a CAUTION notice until the
indicated conditions are fully understood and met
Cautions applicable to this instrument are:
CAUTION
Always use the three-prong ac power cord supplied with this
instrument. Failure to ensure adequate earth grounding by not using
this cord may cause instrument damage
CAUTION
This instrument has autoranging line voltage input; be sure the supply
voltage is within the specified range
CAUTION
Ventilation Requirements: When installing the instrument in a cabinet,
the convection into and out of the instrument must not be restricted.
The ambient temperature (outside the cabinet) must be less than the
maximum operating temperature of the instrument by 4 °C for every
100 watts dissipated in the cabinet. If the total power dissipated in the
cabinet is greater that 800 watts, then forced convection must be used.
CAUTION
This product is designed for use in Installation Category II and
Pollution Degree 2 per IEC 1010 and 664 respectively.
Chapter 7
7-5
Safety and Regulatory Information
Safety Information
Instrument Markings
!
When you see this symbol on your instrument, you should
refer to the instrument’s instruction manual for important
information.
This symbol indicates hazardous voltages.
The laser radiation symbol is marked on products that have
a laser output.
This symbol indicates that the instrument requires
alternating current (ac) input.
The CE mark is a registered trademark of the European
Community. If it is accompanied by a year, it indicates the
year the design was proven.
The CSA mark is a registered trademark of the Canadian
Standards Association.
1SM1-A
This text indicates that the instrument is an Industrial
Scientific and Medical Group 1 Class A product (CISPER
11, Clause 4).
This symbol indicates that the power line switch is ON.
This symbol indicates that the power line switch is OFF or
in STANDBY position.
This symbol indicates the product meets the Australian
Standards.
Safety
Earth
Ground
This is a Safety Class I product (provided with a protective earthing
terminal). An 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. Whenever it is likely that the
protection has been impaired, the product must be made inoperative
and secured against any unintended operation.
Before Applying
Power
Verify that the product is configured to match the available main power
source as described in the input power configuration instructions in this
manual. If this product is to be powered by autotransformer, make sure
the common terminal is connected to the neutral (grounded) side of the
ac power supply.
7-6
Chapter 7
Safety and Regulatory Information
Regulatory Information
Regulatory Information
Statement of Compliance
This instrument 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. The instruction
documentation contains information and warnings which must be
followed by the user to ensure safe operation and to maintain the
instrument in a safe condition.
Compliance with German Noise Requirements
This is to declare that this instrument is in conformance with the
German Regulation on Noise Declaration Machines (Laermangabe
nach der Maschinenlaermrerordnung -3.GSGV Deutschland).
Acoustic Noise Emssion/Geraeuschemission
LpA <70 dB
Operator Position
Normal Position
per ISO 7779
Chapter 7
LpA <70 dB
am Arbeitsplatz
normaler Betrieb
nach DIN 45635 t.19
7-7
Safety and Regulatory Information
Regulatory Information
7-8
Chapter 7
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