AMS-8050
Antenna Measurement
System
User Manual
*System shown, including optional and customer provided equipment, represents the current
design at time this document was published.
©ETS-Lindgren—May, 2006
Rev. A—Part#399777
AMS-8050, Antenna Measurement System
ETS-Lindgren reserves the right to make changes to any products herein to improve function or
design. Although the information in this document has been carefully reviewed and is believed to
be reliable, ETS-Lindgren does not assume any liability arising out of the application or use of any
product, circuit or software described herein; nor does it convey any license under neither its
patent rights nor the rights of others. All trademarks are the property of their respective owners.
©Copyright 2006 by ETS-Lindgren L.P. All Rights Reserved.
No part of this document may be reproduced by any means without written
permission from ETS-Lindgren L.P. Requests for images and permission
to use contents in publications requires written permission.
Revision
A
Description
Date
May, 2006
Initial Release
E-Mail & Internet Addresses
support@ets-lindgren.com
http://www.ets-lindgren.com
USA
1301 Arrow Point Drive, Cedar Park, TX 78613 USA
P O Box 80589, Austin, TX 78708-0589 USA
Tel. +1.512.531.6400
Fax +1.512.531-6500
Finland
Mekaanikontie 1, 27510, Eura, Finland
Tel. 358.2.838.330
Fax 358.2.865.1233
Japan
4-2-6, Kohinata
Bunkyo-ku, Tokyo 112-0006 Japan
Tel. +81.3.3813.7100
Fax +81.3.3813.8068
China
1917-1918 Xue Zhixuan Building
No. 16 Xue Qing Road
Haidian District
Beijing Postcode: 100083 China
Tel. +86.010.827.55304
Fax +86.010.827.55307
II
©ETS-Lindgren—May, 2006
Rev. A—P#399777
AMS-8050, Antenna Measurement System
Table of Contents
1. Introduction .................................................................................................................................. 1
2. Specifications............................................................................................................................... 3
2.1. Standard Configuration ......................................................................................................... 3
2.2. Optional Items....................................................................................................................... 4
2.2.1. Infrared (IR) Camera System ......................................................................................... 4
2.2.2. Portable Comput (g Device (PCD) Mount ...................................................................... 4
2.3. Electrical Power Requirements............................................................................................. 4
2.3.1. Drive System Electrical Requirement............................................................................. 4
2.3.2. Equipment/EUT Receptacle Requirement ..................................................................... 5
3. Getting Started............................................................................................................................. 7
3.1. Unpacking and Acceptance .................................................................................................. 7
3.2. Packing List........................................................................................................................... 8
3.3. Additional Equipment .......................................................................................................... 10
3.3.1. Wireless Communication Tester .................................................................................. 10
3.3.2. Spectrum Analyzer ....................................................................................................... 10
3.3.3. Vector Network Analyzer.............................................................................................. 10
3.3.4. Windows Compatible Computer................................................................................... 11
3.4. Locating the AMS-8050 ...................................................................................................... 11
3.4.1. RF Shielded Hatch ....................................................................................................... 13
3.4.2. Environmental Requirements....................................................................................... 13
3.4.3. Transport to Location ................................................................................................... 13
4. Configuring the AMS-8050 for Use ........................................................................................... 15
4.1. Locking Casters .................................................................................................................. 15
4.2. Multi-Axis Positioning System (MAPS™) ........................................................................... 16
4.3. Antennas ............................................................................................................................. 17
4.3.1. Communication Antenna .............................................................................................. 17
4.3.2. Model 3164-04 Diagonal Dual Polarized Horn Antenna .............................................. 18
4.3.3. Model 3126 Precision Reference Sleeve Dipole Antennas ......................................... 19
4.4. Model 2090 Option 1 Controller.......................................................................................... 19
4.5. Cable Connection ............................................................................................................... 20
4.5.1. Cables to Antennas ...................................................................................................... 20
4.5.2. Routing Cables in the System...................................................................................... 22
4.5.3. Ferrite Beaded Cable from MAPS................................................................................ 23
4.5.4. Final Connections......................................................................................................... 25
4.6. Mounts ................................................................................................................................ 25
4.6.1. SAM Head Mount ......................................................................................................... 25
4.6.2. Free-Space Mount........................................................................................................ 27
4.6.3. Offset Mount................................................................................................................. 28
4.6.4. Vertical and Horizontal Dipole Mounts ......................................................................... 29
4.6.5. Optional Portable Computing Device Mount ................................................................ 31
4.7. Optional Infrared (IR) Camera System ............................................................................... 32
4.7.1. Installation of the Optional IR Camera System ............................................................ 33
4.8. EMQuest EMQ-100 Antenna Pattern Measurement Software ........................................... 33
5. TIS Range Calibration ............................................................................................................... 35
5.1. Equipment Required ........................................................................................................... 35
5.2. Thru-Calibration .................................................................................................................. 35
5.3. Software Set-up Procedure................................................................................................. 36
5.4. Phi Polarization (Vertical) Measurement ............................................................................ 39
5.5. Theta Polarization (Horizontal) Measurement .................................................................... 42
5.6. Range Calibration Data....................................................................................................... 43
6. TRP Range Calibration.............................................................................................................. 45
6.1. Equipment Required ........................................................................................................... 45
6.2. Pre-Calibration .................................................................................................................... 45
6.3. Software Set-up Procedure................................................................................................. 46
©ETS-Lindgren—May, 2006
Rev. A—P#399777
III
AMS-8050, Antenna Measurement System
6.4. Phi Polarization (Vertical) Measurement ............................................................................ 49
6.5. Theta Polarization (Horizontal) Measurement .................................................................... 52
6.6. Range Calibration Data....................................................................................................... 53
7. Total Isotropic Sensitivity (TIS) Test.......................................................................................... 55
7.1. Equipment Required ........................................................................................................... 55
7.2. Pre-Calibration .................................................................................................................... 55
7.3. Software Set-up Procedure................................................................................................. 56
7.4. Hardware Set-Up Procedure............................................................................................... 63
7.5. Relative Sensitivity on Intermediate Channels ................................................................... 66
8. Total Radiated Power (TRP) Test ............................................................................................. 72
8.1. Additional Equipment Required .......................................................................................... 72
8.2. Pre-Calibration .................................................................................................................... 72
8.3. Software Set-up Procedure................................................................................................. 73
8.4. Hardware Set-Up Procedure............................................................................................... 83
9. Passive Test .............................................................................................................................. 87
9.1. Equipment Required ........................................................................................................... 87
9.2. Pre-Calibration .................................................................................................................... 87
9.3. Range Calibration for Passive Antenna Testing ................................................................. 87
9.4. Software Set-Up Procedure ................................................................................................ 88
10. Maintenance ............................................................................................................................ 97
10.1. Hatch Maintenance ........................................................................................................... 97
10.2. Antenna Calibration .......................................................................................................... 98
10.3. Part Lubrication................................................................................................................. 98
11. Warranty .................................................................................................................................. 99
IV
©ETS-Lindgren—May, 2006
Rev. A—P#399777
AMS-8050, Antenna Measurement System
List of Figures
Figure 1. The AMS-8050 Antenna Measurement System .............................................................. 1
Figure 2. Drive System Wiring......................................................................................................... 4
Figure 3. Equipment/EUT Wiring..................................................................................................... 5
Figure 4. AMS-8050 Standard System Packing List ....................................................................... 9
Figure 5. AMS-8050 Recommended System Configuration ......................................................... 10
Figure 6. AMS-8050 Dimensions................................................................................................... 11
Figure 7. Minimum Corridor and Doorway Dimensions for AMS-8050 Location .......................... 12
Figure 8. RF Shielded Hatch and Locking System........................................................................ 13
Figure 9. Caster in the Unlocked Position ..................................................................................... 15
Figure 10. Integrated MAPS System ............................................................................................. 16
Figure 11. ETS-Lindgren Communication Antenna....................................................................... 17
Figure 12. ETS-Lindgren Model 3164-04 Antenna........................................................................ 18
Figure 13. ETS-Lindgren Model 3126 Dipole Antenna Kit ............................................................ 19
Figure 14. ETS-Lindgren Model 2090 Option 1 Controller............................................................ 19
Figure 15. Communication Antenna Connection........................................................................... 20
Figure 16. Model 3164-04 Cable Connection................................................................................ 21
Figure 17. Model 2090 Controller Connections............................................................................. 22
Figure 18. Rotary joint and Cable Connections............................................................................. 23
Figure 19. Ferrite Beaded Cable to the Top of the Turntable ....................................................... 24
Figure 20. Mounted SAM Head ..................................................................................................... 26
Figure 21. Free-Space Mount........................................................................................................ 27
Figure 22. Offset Mount................................................................................................................. 28
Figure 23. Vertical Dipole Mount ................................................................................................... 29
Figure 24. Horizontal Dipole Mount ............................................................................................... 30
Figure 25. Optional PCD Mount .................................................................................................... 31
Figure 26. Option IR Camera Module (monitor not shown) ......................................................... 32
Figure 27. Open EmQuest™ ......................................................................................................... 36
Figure 28. Setting Up the Parameter File...................................................................................... 37
Figure 29. Complete the Test Information Table........................................................................... 38
Figure 30. Equipment Menu .......................................................................................................... 39
Figure 31. Phi Axis (Vertical) Antenna Mount Set-up.................................................................... 40
Figure 32. Theta Axis (Horizontal) Equipment Set-Up .................................................................. 42
Figure 33. Open EmQuest™ ......................................................................................................... 46
Figure 34. Setting Up the Parameter File...................................................................................... 47
Figure 35. Complete the Test Information Table........................................................................... 48
Figure 36. Equipment Tab ............................................................................................................. 49
Figure 37. Phi Antenna (Vertical) Mount Set-Up ........................................................................... 50
Figure 38. Theta Antenna Mount Set-Up ...................................................................................... 52
Figure 39. Setting Up the Parameter File...................................................................................... 56
Figure 40. Complete the Test Information Table........................................................................... 57
Figure 41. Parameter Folder Set-Up ............................................................................................. 58
Figure 42. Frequency Range Set-Up............................................................................................. 59
Figure 43. Equipment Folder Set-Up............................................................................................. 60
Figure 44. Corrections Folder Set-Up ........................................................................................... 61
Figure 45. Path Folder Set-Up....................................................................................................... 62
Figure 46. Free-Space Mount with EUT........................................................................................ 63
Figure 47. SAM Head Left Ear, EUT Mounted .............................................................................. 64
Figure 48. SAM Head Right Ear, EUT Mounted............................................................................ 65
Figure 49. Raw Data Table............................................................................................................ 67
Figure 50. Parameter File.............................................................................................................. 68
Figure 51. Frequency Range Set-Up Folder ................................................................................. 69
Figure 52. Open EMQuest™ ......................................................................................................... 73
Figure 53. Setting Up the Parameter File...................................................................................... 74
Figure 54. Complete the Test Information Table........................................................................... 75
©ETS-Lindgren—May, 2006
Rev. A—P#399777
V
AMS-8050, Antenna Measurement System
Figure 55. Parameter Folder Set-Up ............................................................................................. 76
Figure 56. Frequency Range Set-Up............................................................................................. 77
Figure 57. Equipment Set-Up Overview........................................................................................ 78
Figure 58. Equipment Set-Up GSM Screen .................................................................................. 79
Figure 59. Correction Folder Set-Up ............................................................................................. 81
Figure 60. Paths Folder Set-Up..................................................................................................... 82
Figure 61. Free-Space Mount with EUT........................................................................................ 83
Figure 62. SAM Head Left Ear, EUT Mounted .............................................................................. 84
Figure 63. SAM Head Right Ear, EUT Mounted............................................................................ 85
Figure 64. Open EMQuest™.......................................................................................................... 88
Figure 65. Complete Test Information Fields ................................................................................ 89
Figure 66. Parameters Folder........................................................................................................ 90
Figure 67. Frequency Range Set-Up............................................................................................. 91
Figure 68. Equipment Folder Equipment Settings......................................................................... 92
Figure 69. Test Parameter Set-Up ................................................................................................ 93
Figure 70. Correction Set-Up......................................................................................................... 94
Figure 71. Paths Folder Set-Up..................................................................................................... 95
Figure 72. AMS-8050 Hatch Fingerstock Area.............................................................................. 97
List of Tables
Table 1. CDMA Cellular and PCS Test Frequencies .................................................................... 59
Table 2. GSM-850Test Frequencies ............................................................................................ 60
Table 3. GSM-1900 Test Frequencies ......................................................................................... 60
Table 4. GSM Intermediate Channels and Step Size................................................................... 70
Table 5. CDMA Intermediate Channels and Step Size ................................................................. 70
Table 6. Analog Wireless Communication Tester Parameters ..................................................... 77
Table 7. Analog Test Frequencies................................................................................................. 77
Table 8. CDMA Wireless Communication Tester Parameters Cellular and PCS Bands .............. 78
Table 9. Spectrum Analyzer Configuration.................................................................................... 79
VI
©ETS-Lindgren—May, 2006
Rev. A—P#399777
AMS-8050, Antenna Measurement System
NOTICE: This product and related documentation must be reviewed for familiarization with
safety markings and instructions prior to operation of the product.
SAFETY SYMBOL DEFINITIONS
!
OR
REFER TO MANUAL—When the product is marked with this symbol
refer to the instruction manual for additional information. If the
instruction manual has been misplaced, go to www.ets-lindgren.com
for downloadable files or contact ETS-Lindgren customer service.
HIGH VOLTAGE—Indicates the presence of hazardous voltage.
Unsafe practice could result in several personal injury or death.
OR
PROTECTIVE EARTH GROUND (SAFETY GROUND)—Indicates
protective earth terminal. Uninterruptible safety earth ground from the
main power source to the product input wiring terminals, power cord or
supplied power cord set shall be provided.
CAUTION
CAUTION—Denotes a hazard. Failure to follow instructions could
result in minor personal injury and/or property damage. Text that
follows the symbol will provide proper procedures.
WARNING
WARNING—Denotes a hazard. Failure to follow instruction could result
in SEVERE personal injury and/or property damage. Text that follows
the symbol will provide proper procedures.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
VII
AMS-8050, Antenna Measurement System
GENERAL SAFETY CONSIDERATIONS
Read this manual and associated documentation completely before
beginning the installation of the system. This equipment should be
installed and operated only by qualified personnel.
The electrical installation of this product should be accomplished by an
individual who is authorized to so do by the appropriate local authority.
The installation should be in compliance with local electrical safety
codes.
BEFORE POWER IS APPLIED TO THIS INSTRUMENT, GROUND IT
PROPERLY through the protective conductor of the AC power cable to
a power source provided with protective earth contact. Any interruption
of the protective (grounding) conductor, inside or outside of the
instrument, or disconnection of the protective earth terminal could result
in personal injury.
WARRANTY
Do not make any modifications to this unit without consulting the factory
directly.
WARRANTY
BEFORE SERVICING: CONTACT ETS-LINDGREN. Service or
modification to the unit without ETS-Lindgren authorization may void
your warranty. If an attempt to service the unit must be made,
disconnect all electrical power prior to beginning. Voltages exist at
many points within the instrument that could, if contacted, cause
personal injury. Only trained service personnel should perform
adjustments and/or service procedures upon this instrument.
Capacitors inside this instrument may still be CHARGED even when the
instrument is disconnected from the power source.
ONLY QUALIFIED PERSONNEL should operate or service this
equipment.
STAY CLEAR of moving components during operation of equipment.
VIII
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Introduction
AMS-8050, Antenna Measurement System
1. Introduction
The ETS-Lindgren AMS-8050 is a compact, fully anechoic RF enclosure
for antenna pattern measurements. This over-the-air test system for
wireless device measurement may be used for:
•
Pre-certification testing
•
Design validation
•
Performance measurement
•
Production testing
The AMS-8050 is an ideal solution when space is a limitation as it is a
self-contained, freestanding test chamber. Integrated drawers allow
components required for testing to remain with the system. It is
incorporated into a movable chassis so the entire system may be
transported between different test stations. The ability to transport the
system and store all components within the cart makes it an ideal solution
for multiple research and development groups.
Figure 1. The AMS-8050 Antenna Measurement System
©ETS-Lindgren—May, 2006
Rev. A—P#399777
1
AMS-8050, Antenna Measurement System
Introduction
The integrated, turnkey, antenna measurement system makes efficient
pre-certification two and three dimensional (2-D and 3-D) test
measurements with the help of ETS-Lindgren’s EMQuest EMQ 100 test
software. The AMS-8050 system is able to perform 3-D antenna pattern
measurements regardless of the antenna under test and may be equipped
with an active transmitter. Antenna pattern measurement is achieved
quickly and accurately due to the use of a dual polarized measurement
antenna and precise, low visibility multi-axis positioning system (MAPS).
The AMS 8050 System includes our versatile EMQuest™ EMQ 100
Antenna Pattern Measurement Software. The software makes fully
automated (pattern and frequency response) measurements for both
active and passive antennas, including their vector and scalar qualities, in
either transmit or receive mode. Post-processing capabilities include
calculations for directivity, gain, radiation efficiency, total radiated power
and total isotropic sensitivity. EMQ 100 also calculates industry specific
quantities such as Near-Horizon Partial Radiated Power and NearHorizon Partial Isotropic Sensitivity required by the CTIA Over-The-Air
Performance Test Plan. Advanced graphic capabilities allow data to be
shown in a variety of 2-D and 3-D formats, exported to Microsoft Excel,
PDF files or saved in Microsoft RTF format.
2
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Specifications
AMS-8050, Antenna Measurement System
2. Specifications
2.1. Standard Configuration
•
AMS-8050 fully RF anechoic test chamber
•
Approximate weight: 1,800 lbs (816.5 kg)
•
Approximate outer dimensions (L x W x H):
8 ft. x 4 ft. x 6 ft. (2.53m x 1.30m x 1.85m)
•
Prepared for transportation (with crate) approximate weight
2,890 lbs (1311 kg) and approximate dimensions (L x W x H),
9.83 ft. x 5.83 ft. x 7.3 ft. (2.99m x 1.78m x 2.23m)
•
MAPS (Multi-Axis Positioning System) and drive system
(mounted in the drive cart)
•
Model 2090 Option 1 controller (mounted in the system cart)
•
Model 3164-04 dual-polarized antenna
(mounted in the end wall)
•
Communication antenna (mounted in the ceiling)
•
Electrical power filter for drive system motor-bases (mounted in
the drive cart)
•
Electrical power filter for equipment/EUT outlets
(mounted in the drive cart)
•
One, type “N” feed thru (mounted in the system cart)
•
One, type “SMA” feed thru, fixed (mounted in the system cart)
•
One, type “SMA” feed thru, rotating
(mounted in the system cart)
•
One, IEC outlet strip for test equipment
(mounted in the system cart)
•
RF Shielded hatch, opening dimension:
30 in. x 30 in. (76.2cm x 76.2cm)
©ETS-Lindgren—May, 2006
Rev. A—P#399777
3
AMS-8050, Antenna Measurement System
Specifications
2.2. Optional Items
2.2.1. Infrared (IR) Camera System
The IR camera system including monitor, power filter and
required cables, allows the user to observe the EUT while a
test is in progress.
•
Camera panel module with integrated filter
•
15-inch (38.1 cm) LCD monitor
•
Cameral power supply
•
BNC video cable
2.2.2. Portable Comput (g Device (PCD) Mount
The portable computing device mount allows center rotation
of small to medium size notebook, laptop, or tablet devices.
The weight limit is 15 lbs (6.8 kg). The mount will
accommodate a 4.5 in. deep x 10.5 to 14 in. wide x 15.5 in.
long (11.43 cm x 26.67 to 35.56 cm x 39.37cm) device.
2.3. Electrical Power Requirements
A qualified electrician must bring the following power requirements
to the location of the AMS-8050 system.
2.3.1. Drive System Electrical Requirement
The drive system power requirement is a 250 VAC-50/60
Hz-15 Amps, NEMA plug configuration 6-15.
Figure 2. Drive System Wiring
Schuko power plugs are included for European power
requirements. The exchange of the power connections
requires a qualified electrician. Please provide a 230 VAC
10 Amp Schuko connection.
4
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Specifications
AMS-8050, Antenna Measurement System
2.3.2. Equipment/EUT Receptacle Requirement
The equipment/EUT power requirement is 115/230 VAC-5
Amps, NEMA plug configuration 5-15.
Figure 3. Equipment/EUT Wiring
Schuko power plugs are included for European power
requirements. The exchange of the power connections
requires a qualified electrician. Please provide a 230 VAC
10 Amp Schuko connection.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
5
AMS-8050, Antenna Measurement System
Specifications
This page intentionally left blank.
6
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Getting Started
AMS-8050, Antenna Measurement System
3. Getting Started
3.1. Unpacking and Acceptance
Step 1. Upon delivery of your order, inspect the shipping container
for evidence of damage. Record any damage on the delivery
receipt before signing. In case of concealed damage or loss, retain
the packing materials for inspection by the carrier.
Step 2. Remove the shipping container (see separate uncrating
instructions included inside of the crate).
Step 3. Check all materials against the packing list below to verify
that the equipment received matches what was ordered. If you find
any discrepancies, note them and call ETS-Lindgren customer
service for further instructions.
Ensure that you are satisfied with the contents of your order and
the condition of your equipment prior to putting the system into
service.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
7
AMS-8050, Antenna Measurement System
Getting Started
3.2. Packing List
The following items are included in the packaging. Use the
checklist below to verify all items were included with the system.
Rec’d
System Cart Drawer Contents
Cable Kit containing:
Rotary joint
One (1) Part #107569
SMA adapters
Two (2) Part #514052
One (1) Part #514053
Two (2) Part #514054
Two (2) Part #514062
SMA attenuator
One (1) Part #514061
Ferrite beaded cables
One (1) Part #109013-06, 15.24 cm
One (1) Part #109013-07, 17.78 cm
One (1) Part #109013-08, 20.32 cm
One (1) Part #109013-12, 30.48 cm
One (1) Part #109013-18, 45.72 cm
One (1) Part #109013-57, 1.448 m
Storage Box Contents:
Silicone oil, Part #890943
SMA torque wrench, Part #891076
Schuko plug, Part #510089
Schuko cord set, two (2), Part #670023
EMQuest™ Pattern Measurement software
CD and diskette, Part #EMQ-100
T-handled Allen wrench, Part #960010
Tool Kit, Part #110583
AMS-8050 User Manual, Part #399777
Model 2090 Series Controller Manual, Part #399199
Model 3126 Sleeve Dipole user manual, Part #399155
Model 3164 Horn Antenna user manual, Part #399261
Dipole carrying case including:
One (1) Model 3126-1880 precision reference
sleeve dipole
One (1) Model 3126-1845 precision reference
sleeve dipole
One (1) Model 3126-2140 precision reference
sleeve dipole
8
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Getting Started
AMS-8050, Antenna Measurement System
Rec’d
Packed inside system cart rear opening:
SAM head (solution not included), Part #107182
Antenna mount package including:
One (1), vertical range loss test fixture, part
#110165
One (1), horizontal range loss test fixture, part
#110166
SAM head mounting plate, Part #110122, with
screws
Free space mounting, Part # 110185
Off set mount, Part #110161
IEC C13-C14 electrical cords, two (2), Part #670038
RF cable kit, part #107552-72 including:
One (1) RFC-SMR-100-SMS, 2.54m, part
One (1) RFC-SMR-100-SMS 5.08m, part
One (1) RFC-SMS-100 2.54m part
One (1) RFC-SMS-100, 3.05m part
Figure 4. AMS-8050 Standard System Packing List
©ETS-Lindgren—May, 2006
Rev. A—P#399777
9
AMS-8050, Antenna Measurement System
Getting Started
3.3. Additional Equipment
This section describes additional pieces of equipment, provided by
the user, required to complete tests in the AMS-8050. These items
are not included in the standard system configuration. Contact your
sales representative for more information regarding recommended
compatible equipment. Figure 5 illustrates the recommended
configuration; customer provided items are listed in green.
Figure 5. AMS-8050 Recommended System Configuration
3.3.1. Wireless Communication Tester
A wireless communication tester is need for over-the-air
(OTA) testing [AMPS, CDMA 2000, CDMA-1, GSM,
GPRS/EGPRS, TDMA and WCDMA options] (customer
selected testing).
3.3.2. Spectrum Analyzer
A spectrum analyzer is needed as the measurement
receiver; an RF switch is configured to toggle the
measurement receiver to the two receiving ports of the dualpolarized antenna.
3.3.3. Vector Network Analyzer
By using a vector network analyzer, the signal generator and
the multi-channel receivers are integrated into a single unit
with phase lock for both amplitude and phase
measurements. In this test configuration, the AUT is excited
through a RF cable by the built-in, synthesized signal
generator of the VNA.
10
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Getting Started
AMS-8050, Antenna Measurement System
3.3.4. Windows Compatible Computer
The EMQuest™ EMQ-100 software must be installed on a
Windows 2000 or XP compatible computer with Microsoft
Office see current EMQuest™ documentation for the most up
to date system specifications. Contact customer service.
3.4. Locating the AMS-8050
Figure 6 below illustrates the overall dimensions of the AMS-8050
with a small allowance on each side to pass the system through
doorways, hallways, etc. The next figure, figure 7, illustrates the
minimum hallway and doorway widths required to maneuver the
system without disassembling it. If the hallway and doorway
dimensions are met, move the system to its destination. If these
dimensions are not met, the system will need to be split into two
sections. To successfully disassemble the system, follow the
instructions in the relocation section below.
NOTE: If using an elevator to relocate the system, verify the
elevator will accommodate the size and weight of the system and
accompanying personnel before attempting to relocate.
Figure 6. AMS-8050 Dimensions
©ETS-Lindgren—May, 2006
Rev. A—P#399777
11
AMS-8050, Antenna Measurement System
Getting Started
Figure 7. Minimum Corridor and Doorway Dimensions for AMS-8050 Location
12
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Getting Started
AMS-8050, Antenna Measurement System
3.4.1. RF Shielded Hatch
Close the hatch carefully to ensure that the locking
mechanism is engaged at all points; excessive force is not
required. Do not operate the hatch if it does not close
properly.
Figure 8. RF Shielded Hatch and Locking System
3.4.2. Environmental Requirements
The AMS-8050 must be protected against humidity, water,
dirt or condense water. The operating temperature must be
70°F (+/-20°F) and the relative humidity must be 70% (+/20%) to ensure proper operation.
3.4.3. Transport to Location
Before moving the AMS-8050 to a location, verify the
dimensions of the hallway and doorway meet those
illustrated in figure 7 above. If the dimensions are
acceptable, ensure the power has been removed from the
system then release the brake from each caster and relocate
the system. If the dimensions of the hallway and doorway do
not meet those illustrated in figure 7, the system will need to
be disassembled (see the steps below).
©ETS-Lindgren—May, 2006
Rev. A—P#399777
13
AMS-8050, Antenna Measurement System
Getting Started
If the AMS-8050 was ordered with the intention of splitting
the system for transport to its final location, a kit
(part # 110886) is included in the packaging. The kit
includes the necessary bolts, washers, etc. to connect the
two sections of the system and as a result allows the system
to be shipped with a limited number of fasteners in place. If
the kit was not received, please contact customer service.
These items are required to complete the disassembly of the
AMS-8050 system:
•
A minimum of two people
•
Torque wrench
•
Socket wrench
The steps below demonstrate how to successfully split the
system into the drive cart and the system cart. Make note of
the placement of all items before separating the carts to
ensure successful assembly in the new location.
1. Disconnect power from the two main power cords.
2. Disconnect the power cord from the filter to the integrated
power strip.
3. Remove the bolts along the outer middle seam of the
system.
4. Remove the bolts along the seam inside the system cart
section.
5. Remove the penetrations in the sidewall of the system
cart section.
WARNING
Failure to remove all of the penetrations from the system cart will
result in damage to the drive system integration.
Complete the steps in reverse when assembling the system
in its new location. For answers to questions not addressed
in this manual, contact customer service.
14
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4. Configuring the AMS-8050 for Use
Prior to placing the AMS-8050 test system in service, the following items
must be configured to ensure proper operation.
4.1. Locking Casters
Once the AMS-8050 has been moved to the intended location,
ensure the casters are in the locked position prior to configuring or
operating the AMS-8050. Apply pressure to the foot bar provided
on each caster to lock them in place. Remember to release the
brake before attempting to move the system.
Figure 9. Caster in the Unlocked Position
©ETS-Lindgren—May, 2006
Rev. A—P#399777
15
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.2. Multi-Axis Positioning System (MAPS™)
ETS-Lindgren’s Multi-Axis Positioning System (MAPS) is designed
to perform measurements of spherical antenna patterns in addition
to effective isotropic radiated power of wireless devices. The
MAPS is equipped with two motor bases, one to control each
rotation axis, that are controlled through the Model 2090 series
controller through fiber optic control lines. The rotating shaft and
assembly is constructed of low reflective dielectric materials. The
integrated MAPS system is installed in the drive cart section of the
AMS-8050 system.
Figure 10. Integrated MAPS System
16
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.3. Antennas
4.3.1. Communication Antenna
The communication antenna is mounted in the top of the
system in the drive cart section above the MAPS. This
antenna is a cavity-backed, square, double-armed, printed
spiral antenna developed specifically for ETS-Lindgren’s
AMS series of chambers. It is a circularly polarized, low
profile antenna used for communication with the wireless
equipment under test with a frequency range of
approximately 700 MHz to 3 GHz.
Figure 11. ETS-Lindgren Communication Antenna
©ETS-Lindgren—May, 2006
Rev. A—P#399777
17
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.3.2. Model 3164-04 Diagonal Dual Polarized Horn Antenna
The Model 3164-04 diagonal dual polarized horn antenna is
installed in the end wall of system cart section, opposite the
MAPS. For additional information regarding this antenna,
please refer to the user manual included with the system.
Figure 12. ETS-Lindgren Model 3164-04 Antenna
(The optional IR Camera is shown to the left of the antenna)
18
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.3.3. Model 3126 Precision Reference Sleeve Dipole
Antennas
Three sleeve dipole antennas (Models 3126-880, 3126-1845
and 3126-2140) are packaged in a custom carrying case
located in a drawer of the AMS-8050 system. For additional
information regarding these antennas, please refer to the
user manual included.
Figure 13. ETS-Lindgren Model 3126 Dipole Antenna Kit
4.4. Model 2090 Option 1 Controller
The Model 2090 Option 1 controller is mounted in the lower section
of the system cart. Ensure the Model 2090 controller parameter
files are configured correctly prior to putting the system into service.
Refer to the Model 2090 Series Controller user manual for
information regarding operation and configuration. The steps for
connecting the cables associated with the Model 2090 follow in the
Cable Connection section.
Figure 14. ETS-Lindgren Model 2090 Option 1 Controller
©ETS-Lindgren—May, 2006
Rev. A—P#399777
19
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.5. Cable Connection
The following steps will prepare the system to communicate with
the software and integrated controller.
4.5.1. Cables to Antennas
Begin by connecting the cables to the integrated antennas.
1. Using a stepladder and the longest of the RF-Cables,
move to the top of the system to access the
communication antenna.
2. Attach the connector that has a 90-degree angle to the
communication antenna. Make certain the cable has
good connection by using an SMA torque wrench. Good
connections will ensure accurate test results.
3. Fit the cable into the interchange provided at the top of
the system.
CAUTION
The top of the system is not designed to support a load of
any kind. Do not physically climb on top of the chamber.
Figure 15. Communication Antenna Connection
20
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4. Next, using the two similar length RF cables, attach the cables
to the dual polarized horn antenna integrated into the end panel
of the AMS-8050.
5. Make certain that the cable including a 90-degree connector is
connected to the horizontal polarization of the antenna.
6. Use the cable that has straight SMA connectors on both ends to
connect the vertical polarization of the antenna.
7. Verify the cables have been joined securely with the antenna by
using an SMA torque wrench.
8. Carefully feed all three RF cables into the feed through port
provided directly below the dual polarized horn antenna.
Figure 16. Model 3164-04 Cable Connection
©ETS-Lindgren—May, 2006
Rev. A—P#399777
21
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.5.2. Routing Cables in the System
The following steps are achieved by working in the system
cart portion of the AMS-8050.
1. Ensure the four fiber optic cables for the MAPS are
connected to the device interface ports marked on the
back of Model 2090 controller. Confirm the blue cables
are connected to the top ports and the orange cables are
connected to the bottom ports.
2. Connect the two RF cables for the integrated horn
antenna to the relay switches marked “C” the back panel
of the Model 2090 controller.
3. Finally connect the power cord provided to the power port
on the back of the controller.
Figure 17. Model 2090 Controller Connections
NOTE: Schuko power plugs are included for European
power requirements. Exchange of connections requires a
qualified electrician. Please provide a 230 VAC 10 Amp
Schuko connection.
4. Connect the vector network analyzer and
wireless communication tester to the Model
2090 Option 1 controller using the relay
switches on the back of the controller.
The customer may provide two additional pieces of
equipment to integrate into the relay switches at the back of
the Model 2090 Option 1 controller.
22
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.5.3. Ferrite Beaded Cable from MAPS
The following steps will prepare the MAPS (Multiple Axis
Positioning System) for the addition of a EUT/AUT.
1. Remove the absorber from the top of the MAPS
turntable.
2. Remove the three bolts from the turntable top using the
t-handled wrench provided.
3. Locate the rotary joint located in the center of the MAPS
drive. Connect the longest ferrite-beaded cable provided
to the rotary joint using the SMA torque wrench provided.
Figure 18. Rotary joint and Cable Connections
©ETS-Lindgren—May, 2006
Rev. A—P#399777
23
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4. Route the cable from the rotary joint through the slot
provided next to the MAPS penetration in the turntable
top through the top of the MAPS.
Figure 19. Ferrite Beaded Cable to the Top of the Turntable
5. Replace the turntable top keeping the excess slack of the
cable above the top of the turntable.
24
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.5.4. Final Connections
To complete the setup of the AMS-8050 system, follow these
steps:
1. Connect the power for the controller into the integrated
power strip.
2. Next, connect the power cord provided to the power filter
located under the cart to the integrated power strip.
3. Finally, to provide power to the entire system, connect
the filter power cord to a 125-volt, 15-amp power source
and the AMS 8050 power cord to a 250-volt 15-amp
power source.
4.6. Mounts
The AMS-8050 includes several mounts to assist in securing
antennas or EUT to the mast of the integrated MAPS unit. The
following sections describe how each mount is installed.
4.6.1. SAM Head Mount
Follow these steps to secure the SAM head to the MAPS.
1. The user must attach the clear plate, or SAM head
mount, to the bottom of the SAM head by installing the
four plastic screws provided prior to mounting it to the
MAPS.
CAUTION
Support the SAM head through out the entire installation
process. Failure to support the SAM head when installing or
removing it from the MAPS could result in damage to it and
the system.
2. Place the SAM mount on the MAPS shaft and lock it into
place by turning the lever 180 degrees.
3. Place the knobs in the SAM head plate through the holes
in the mounting coupling on the MAPS shaft and let the
SAM head slide down to secure it in place.
4. Finally, place the locking ring at the bottom of the SAM
mounting fixture and lock the thumbscrew to prevent the
SAM head from loosening during testing.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
25
AMS-8050, Antenna Measurement System
CAUTION
Configuring the AMS-8050 for Use
Check the SAM head mount prior to each test to verify it has
not loosened during previous tests.
Figure 20. Mounted SAM Head
Use only clear masking tape to secure the EUT to the SAM
head. Other types of tape may cause interference in the test
space. Place the tape in an “X” pattern over the EUT to
secure it to the head.
CAUTION
Verify the tape is secure before each series of tests. Failure
to secure the EUT properly may result in damage to the EUT
and the absorber in the AMS-8050.
CAUTION
Remove the SAM head from the mounting fixture prior to
removing the fixture. Failure to do so could result in damage
to the head, chamber and user.
26
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.6.2. Free-Space Mount
To connect the free-space mount fixture to the MAPS
coupling, turn the lever 180-degrees to lock it in place.
Figure 21. Free-Space Mount
©ETS-Lindgren—May, 2006
Rev. A—P#399777
27
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.6.3. Offset Mount
To attach the offset mount to the turntable top, begin by
carefully removing the two absorber patches from the top of
the turntable. Store the absorber patches in a safe location
during the calibration equipment set up. Use the two allen
screws included to attach the fixture to the top of the
turntable.
Figure 22. Offset Mount
28
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.6.4. Vertical and Horizontal Dipole Mounts
The following steps demonstrate how to attach the vertical
and horizontal mounts to the range/path loss fixture.
1. For a vertical mount, use the shorter of the two clear
plastic tubes with the white Teflon collar.
2. Insert the threaded end of the tube into the offset mount
on the turntable and carefully hand tighten.
3. Thread the ferrite-beaded cable through the slots of the
tube to the AUT and ensure a tight connection.
4. Insert the AUT into the vertical mount and tighten the
thumbscrews provided.
5. Replace the two absorber patches to the top of the
turntable.
Note: When the absorber is replaced on the turntable it may
not be even with the surrounding absorber. Verify the
absorber will not be damaged during rotation before
proceeding.
Figure 23. Vertical Dipole Mount
©ETS-Lindgren—May, 2006
Rev. A—P#399777
29
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
For horizontal mounts, use the clear plastic tube with the
clear Teflon collar.
1. Insert the threaded end of the tube into the offset mount
on the turntable and carefully hand tighten.
2. Thread the ferrite-beaded cable through the slots of the
tube to the AUT and ensure a tight connection.
3. Slide the AUT into the horizontal mount.
4. Replace the two absorber patches to the top of the
turntable.
Note: When the absorber is replaced on the turntable it may
not be even with the surrounding absorber. Verify the
absorber will not be damaged during rotation before
proceeding.
Figure 24. Horizontal Dipole Mount
30
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.6.5. Optional Portable Computing Device Mount
The portable computing device mount allows center rotation
of small to medium size notebook, laptop or tablet
computers. The weight limit is 15 lbs (6.8 kg). The mount
will accommodate a device 4.5 in. deep x 10.5 to 14 in. wide
x 15.5 in. long (11.43 cm 26.67 to 35.56 cm x 39.37cm).
1. Attach the PCD mount fixture to the MAPS coupling
then turn the lever 180 degrees to lock it in place.
2. Secure the PCD to the mounting fixture with the
provided device straps.
CAUTION
Confirm the device mounted in the PCD has sufficient
clearance to rotate without damaging the absorber before
continuing.
Figure 25. Optional PCD Mount
©ETS-Lindgren—May, 2006
Rev. A—P#399777
31
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
4.7. Optional Infrared (IR) Camera System
The AMS-8050 may, as an option, include an IR camera system.
The camera allows the device under test to be monitored during
rotation. The system is useful to ensure the device has not
changed from the initial position. The system includes:
•
IR Camera module includes the IR camera, an absorber patch
and an integrated RF filter
•
Flat panel monitor (included but not shown)
•
Coaxial cable to monitor (included but not shown)
•
Power cord (included but not shown)
Figure 26. Option IR Camera Module
(monitor not shown)
32
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Configuring the AMS-8050 for Use
AMS-8050, Antenna Measurement System
4.7.1. Installation of the Optional IR Camera System
To install the optional IR camera you will need:
•
Two people
•
7/16 inch wrench included in toolkit
1. Remove the plastic cover in the floor of the system
cart behind the storage drawers.
2. Remove the existing shielded panel located in the top
of the system cart area behind the storage drawers.
NOTE: Absorber is attached to the existing panel. Remove
the panel with care. Store the panel in a secure location.
The panel may need to be used in the future without the IR
camera system.
3. Slide the IR camera mounting system at a 45-degree
angle through the opening with the lens pointed
toward the drive cart/MAPS. When the camera is
inside the AMS-8050 test area, carefully straighten
the camera mount and align the holes on the panel
and the system.
4. Insert the screws removed from the original panel into
the camera panel and tighten.
5. Run the video cable to connect to the monitor.
6. Plug the power supply into the IEC power strip
mounted in the floor of the system cart.
7. Finally, connect the plug from power supply into the
camera filter port.
For information regarding the operation of the monitor, refer
to the operator’s manual included with the system.
4.8. EMQuest EMQ-100 Antenna Pattern Measurement
Software
Please refer to the help file included with the EMQuest software for
operation instructions and additional resources.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
33
AMS-8050, Antenna Measurement System
Configuring the AMS-8050 for Use
This page intentionally left blank.
34
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TIS Range Calibration
AMS-8050, Antenna Measurement System
5. TIS Range Calibration
This procedure guides the user to determine the proper range calibration
loss values contributed to the test equipment used for Total Isotropic
Sensitivity (TIS) tests.
5.1. Equipment Required
In addition to the AMS-8050 system and its associated accessories,
the user will need the following to complete this test:
•
Vector network analyzer (VNA), an equipment rack
configuration is suggested
•
Low-Loss Cable required to reach from the receive port of the
VNA to the transmit antenna mounted on the turntable in the
chamber (spare loop back RF cable)
5.2. Thru-Calibration
The equipment rack must be configured in TIS test mode. Once
the range calibration is complete, return all connections for the
equipment back to the configuration for the TIS test mode.
1. Turn on power to the equipment rack.
2. Turn off power to the spectrum analyzer and the wireless
communication tester, as these will not be needed for this
test.
3. Turn on power to the vector network analyzer and allow 30
minutes for warm-up.
4. Connect a cable from the SMA connector, located in the
sidewall of the system cart, to the transmit port of the vector
network analyzer.
5. Next, connect the 10 dB attenuator and longest ferritebeaded cable to the cable located under the MAPS turntable
and to the receive port input on the VNA using a loop back
RF cable.
NOTE: Refer to Section 4.4.3 Ferrite Beaded Cable from MAPS for
instructions to connect the cable under the MAPS.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
35
AMS-8050, Antenna Measurement System
TIS Range Calibration
5.3. Software Set-up Procedure
1. Open the EMQuest™ measurement software.
2. Select and load the parameter file labeled “Range Cal” in the
Parameters folder. All parameter files are standard for each
test and will not need to be modified.
NOTE: Refer to the EMQuest™ software help file and the
AMS-8050 video tutorial included with this manual for additional
information regarding parameter creation.
Figure 27. Open EmQuest™
36
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TIS Range Calibration
AMS-8050, Antenna Measurement System
3. Fill in all test information fields in the parameter file by
entering the appropriate variables (i.e. EUT manufacturer,
model number, test type, and serial number).
Figure 28. Setting Up the Parameter File
©ETS-Lindgren—May, 2006
Rev. A—P#399777
37
AMS-8050, Antenna Measurement System
TIS Range Calibration
4. Open the Test Information table by pressing the “+” symbol
to view other folders. Select the Operator/Comments folder
and fill in the name of the operator, temperature, humidity
factor, test comments (setup description, etc.) and any other
variables. List the polarization and antenna type used for
each test i.e. Theta Polarization_3126-880 LF Antenna.
Figure 29. Complete the Test Information Table
5. The Parameters folder will remain standard for each test
and will not be modified.
6. The Frequency Range folder will remain standard for each
test and will not be modified. The frequency range 780 MHz
to 2290 MHz is sufficient to cover TIS frequencies.
7. The Corrections folder is not required.
8. Select the Paths folder and set the raw data path. Create a
folder to save the data taken during the test.
9. The Notification folder is not required.
38
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TIS Range Calibration
AMS-8050, Antenna Measurement System
5.4. Phi Polarization (Vertical) Measurement
1. Go to the Equipment menu located on the toolbar at the top
of the EMQuest™ software window as shown below. In the
drop down window, select the Theta positioner. Once you
have selected the Theta positioner, go to the Target window
and enter 90.0. Select Seek, which will move the turntable
into test position.
Figure 30. Equipment Menu
©ETS-Lindgren—May, 2006
Rev. A—P#399777
39
AMS-8050, Antenna Measurement System
TIS Range Calibration
2. Install the offset mount and insert the vertical dipole mount
(clear tube) and necessary extensions into the center of the
turntable as shown below. Install the dipole antenna and
adjust the elevation to bore sight with the center of the quadridge antenna (receive antenna) mounted in the end wall of
the AMS-8050.
Figure 31. Phi Axis (Vertical) Antenna Mount Set-up
3. Go to the Equipment menu located on the toolbar at the top
of the EMQuest™ software window as shown in figure 30
above. In the drop down window ensure the switch settings
are correct to perform the thru calibration.
4. Select the Run Test button on the EMQuest™ software
toolbar to start the response test. The software will ask you
to connect the cables together for a cable calibration, press
OK. Once the cable calibration is complete, the software will
ask you to connect the cable or equipment to be measured,
do not press OK unless you intend to check the cable
calibration.
40
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TIS Range Calibration
AMS-8050, Antenna Measurement System
5. Disconnect the spare loop back RF cable from the 10 dB
attenuator and ferrite-beaded cable. Next, connect the 10
dB attenuator and ferrite-beaded cable to the Model 3126880 dipole sleeve antenna under test (AUT). Secure the
AUT in the mount.
6. Return to the equipment rack, remove the cable that is
connected to RF 3 Out on the wireless communication tester
and connect it with the spare loop back cable connected to
the receive port input on the VNA.
7. Once all of the cable connections are complete, reinstall the
absorber on the turntable and close the chamber door.
Select OK on the EMQuest™ software to start the test.
8. Once the test is complete, remove the low frequency
antenna and install the next antenna. At this time, change
the comments section to reflect the change of antenna.
NOTE: Repeat this step for each antenna to be used for the TIS test.
9. When all information is updated to reflect the AUT, select the
Run Test button on the EMQuest™ software toolbar to start
the response test. The software will automatically test the
antenna. However, if the cable calibration is lost, repeat
steps three and four in the Software Set-Up Procedure
section above. Follow the instructions from the software.
Once the cable calibration is complete, repeat steps three
through six of this section.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
41
AMS-8050, Antenna Measurement System
TIS Range Calibration
5.5. Theta Polarization (Horizontal) Measurement
1. Once again, go to the Equipment menu located on the
toolbar at the top of the EMQuest™ software window as
shown in figure 30 above. In the drop down window, select
Theta Positioner. Next, go to the Target window and enter
“90.0”. Select Seek which will moved the turntable into test
position.
CAUTION
The absorber may not sit flush on the turntable top. Verify
the absorber on the tabletop and the absorber surrounding
the table will not be damaged during rotation before
continuing.
2. Install the horizontal dipole mount and the high frequency
antenna. Use an alignment tool to achieve the center of the
quiet zone. Connect the cable to the antenna then verify it is
properly mounted in the center of the quiet zone,. At this
time, change the Comments section in the EMQuest™
software, to reflect the change of polarization.
Figure 32. Theta Axis (Horizontal) Equipment Set-Up
42
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TIS Range Calibration
AMS-8050, Antenna Measurement System
3. Replace the absorbers on the turntable top.
NOTE: The absorbers may not sit flush. Before beginning the test,
verify the absorbers will not be damaged.
4. Go to the Equipment menu located on the toolbar at the top
of the EMQuest™ software window as shown in Figure 30.
Ensure the switch settings are correct to perform thru
calibration.
NOTE: Thru calibration is not required if it was performed in the
previous polarization and equipment or cables are not changed.
5. When all of the information is updated to reflect the AUT,
select the Run Test button on the EMQuest™ software
toolbar to start the response test. The software will
automatically start the test. However, if the cable calibration
is lost, repeat steps three and four in the Software Set-Up
Procedure section above. Follow the instructions from the
software. Once the cable calibration is complete, repeat step
five through seven above.
6. Once the test is complete, remove the antenna and install
the next antenna to be tested. At this time, change the
comments section to reflect the change of antenna along
with the polarization.
7. When all information is updated to reflect the AUT, select the
Run Test button on the EMQuest™ software toolbar to start
the response test. The software will automatically test the
antenna. However, if the cable calibration is lost, repeat
steps three and four in the Software Set-Up Procedure
section above. Follow the instructions from the software.
Once the cable calibration is complete, repeat steps four
through six of this section.
5.6. Range Calibration Data
1. Once the measurements are complete, find and open the
corresponding Phi and Theta raw data files. Go to the
Equipment menu, located on toolbar at the top of
EMQuest™ software window as shown in figure 28 above
©ETS-Lindgren—May, 2006
Rev. A—P#399777
43
AMS-8050, Antenna Measurement System
TIS Range Calibration
and select Tools. Next, select Correction File Generator
in the drop down menu.
2. Fill in all identification information along with
operator/comments. Be sure to note Theta or Phi axis in
your comments along with TIS range type.
3. In the Frequency Response Data folder, Data Type is
“Loss”, Units are “User-defined”, finally select the dB box.
4. Go to the raw-data files and copy the corresponding data
into the chart given in the Correction File Generator tool.
The 3126-880 antenna data may be used from 780 MHz to
982 MHz. The 3126-1845 antenna data may be used from
1635 MHz to 1995 MHz. The 3126-2140 antenna data
may be used from 1990MHz to 2280 MHz.
5. After all of the data has been inserted into the Correction
File Generator tool, select the Graph folder and double
check the data. Typical loss will be between –10.0 dB and
–40.0 dB. Once data is verified, select the Create File
button on the bottom of the screen and save the new
response file as Theta or Phi along with TIS range type i.e.
TIS_Theta Axis Correction.
6. Once both correction response files are created and saved,
close the corresponding raw data files. Find the current
correction files and open each file.
7. Next, perform a side-by-side comparison of the newly
created correction files and the current correction files to
be used from the last range calibration. If the
measurements are within the specifications, close the
current correction files and archive them into a folder in the
same format as described in step 8 of the Software Set-up
Procedure section above.
8. Archive the current correction files before proceeding.
9. Go back to the newly created correction file. Copy the files
and paste them to the location the correction files are
stored. These response files will now be used in all TIS
measurements. Verify all parameter files that will be
affected by the newly created correction files are changed.
NOTE: Range calibrations must be done on a regular basis to
ensure the integrity of the TIS measurements.
44
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TRP Range Calibration
AMS-8050, Antenna Measurement System
6. TRP Range Calibration
This procedure directs the user on how to determine the proper loss
values contributed to the test equipment for Total Radiated Power (TRP)
tests.
6.1. Equipment Required
In addition to the AMS-8050 system and its components, the user
will need the following to complete this test:
•
Vector network analyzer (VNA) , an equipment rack
configuration is recommended.
•
Low-Loss Cable required reaching from the receive port of the
vector network analyzer to transmit antenna mounted on the
turntable in the chamber (spare loop back RF cable)
6.2. Pre-Calibration
The equipment rack must be configured in TRP test mode. Once
the range calibration is complete, return all connections for the
equipment back to the configuration for the TRP test mode.
1. Turn on power for the equipment rack.
2. Turn off power to the spectrum analyzer and the wireless
communication tester, as these will not be needed for this test.
3. Turn on the vector network analyzer and allow 30 minutes for
warm-up.
4. Connect a cable from the SMA connector, located in the
sidewall of the system cart, to the transmit port of the vector
network analyzer.
5. Next, connect the 10 dB attenuator and longest ferrite-beaded
cable to the cable located under the turntable to the receive port
input on the vector network analyzer using a loop back RF
cable. Refer to Section 4.5.3 for instructions to connect the
cable under the MAPS.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
45
AMS-8050, Antenna Measurement System
TRP Range Calibration
6.3. Software Set-up Procedure
1. Open the EMQuest™ measurement software.
2. Select and load the appropriate parameter file labeled as
“Range Cal” in the Parameters folder. All parameter files are
standard for each test and should not have to be modified.
NOTE: Refer to the EMQuest™ software help file and the
AMS-8050 video tutorial included with this manual for additional
information regarding parameter creation.
Figure 33. Open EmQuest™
46
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TRP Range Calibration
AMS-8050, Antenna Measurement System
3. Fill in all test information fields in the parameter file by entering
the appropriate variables (i.e. EUT manufacturer, model
number, test type, and serial number).
Figure 34. Setting Up the Parameter File
©ETS-Lindgren—May, 2006
Rev. A—P#399777
47
AMS-8050, Antenna Measurement System
TRP Range Calibration
4. Open the Test Information table by pressing the “+” symbol to
view other folders. Select the Operator/Comments folder and
fill in name of operator, temperature, humidity factor, test
comments (setup description, etc.) and any other variables. List
the polarization and antenna type used for each test i.e. Theta
Polarization_3126-880 LF Antenna.
Figure 35. Complete the Test Information Table
5. The Parameters folder should remain standard for each test
and should not be modified.
6. The frequency range should remain standard for each test and
should not be modified. The frequency range 780 MHz to 2290
MHz is sufficient to cover TRP frequencies.
7. The Corrections folder is not required.
8. Select the Path folder and set the raw data path. Create a
folder to save the data taken during the test.
9. The Notification folder is not required.
48
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TRP Range Calibration
AMS-8050, Antenna Measurement System
6.4. Phi Polarization (Vertical) Measurement
1. Go to the Equipment menu located on the toolbar at the top of
the EMQuest™ software window as shown in figure 36 below.
In the drop down window, select the Theta Positioner. Once
you have selected the Theta Positioner, go to the Target
window and enter 90.0. Select Seek, which will move the
turntable into test position.
Figure 36. Equipment Tab
©ETS-Lindgren—May, 2006
Rev. A—P#399777
49
AMS-8050, Antenna Measurement System
TRP Range Calibration
2. Install the alignment plate as shown in figure 37 below and
insert the center post (clear tube) and necessary extensions in
the center of the turntable. Install the AUT and adjust the
elevation to be at bore sight with the center of the quad-ridge
antenna (receive antenna) mounted in the end wall of the AMS8050.
Figure 37. Phi Antenna (Vertical) Mount Set-Up
3. Go to the Equipment menu located on the toolbar at the top of
the EMQuest™ software window as shown in figure 36 above.
In the drop down window ensure the switch settings are correct
to perform the thru calibration.
4. Press the Run Test button on the EMQuest™ software toolbar
to start the response test. The software will ask you to connect
the cables together for a cable calibration, press OK. Once the
cable calibration is complete, the software will ask you to
connect the cable or equipment to be measured. Do not press
OK unless you intend to check the cable calibration.
50
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TRP Range Calibration
AMS-8050, Antenna Measurement System
5. Disconnect the spare loop back RF cable from the 10 dB
attenuator and ferrite-beaded cable.
6. Now connect the 10 dB attenuator and ferrite-beaded cable to
the Model 3126-880 antenna under test (AUT), located in the
chamber. Secure the AUT in the.
7. Return to the equipment rack, remove the cable that is
connected to RF 3 Out on the wireless communication tester
and connect it with the spare loop back cable connected to the
receive port input on the VNA.
8. Once all of the cable connections are complete, reinstall the
absorber on the turntable and close the chamber door. Select
OK in the EMQuest™ software to start the test.
NOTE: The absorber may not sit flush on the turntable top.
Verify the absorber on the turntable as well as the absorber
that surrounds it will not be damaged during rotation before
proceeding.
9. Once the test is complete, remove the antenna and install the
next antenna. At this time, change the comments section to
reflect the change of antenna.
NOTE: Repeat this step for each antenna to be used for the TRP test.
10. When all information is updated to reflect the AUT, select the
Run Test button on the EMQuest™ software toolbar to start the
response test. The software will automatically test the antenna.
However, if the cable calibration is lost, repeat steps three and
four in the Software Set-Up Procedure section above. Follow
the instructions from the software. Once the cable calibration is
complete, repeat steps four through six of this section.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
51
AMS-8050, Antenna Measurement System
TRP Range Calibration
6.5. Theta Polarization (Horizontal) Measurement
1. Once again, go to the Equipment menu located on the toolbar
at the top of the EMQuest™ software window as shown in figure
36 above. In the drop down window, select the Theta
Positioner. Once you have selected it, go to the Target window
and enter “90.0”. Select Seek that will move the turntable into
test position.
2. Install the theta axis, horizontal, dipole mount and insert the
high frequency antenna. Use an alignment tool to achieve the
center of the quiet zone. Once the high frequency antenna is
properly mounted in the center of the quiet zone, connect the
cable. At this time, change the Comments section in the
EMQuest™ software, to reflect the change of polarization.
Figure 38. Theta Antenna Mount Set-Up
3. Go to the Equipment menu located on the toolbar at the top of
the EMQuest™ software window as shown in figure 36. Ensure
the switch settings are correct to perform thru calibration.
52
©ETS-Lindgren—May, 2006
Rev. A—P#399777
TRP Range Calibration
AMS-8050, Antenna Measurement System
4. When all information is updated to reflect the AUT, select the
Run Test button on the EMQuest™ software toolbar to start the
response test. The software will automatically test the antenna.
However, if the cable calibration is lost, repeat steps three and
four in the Software Set-Up Procedure section above. Follow
the instructions from the software. Once the cable calibration is
complete, repeat step five through seven above.
5. Once the test is complete, remove the antenna and install the
next antenna. At this time, change the comments section to
reflect the change of antenna along with the polarization.
NOTE: Repeat this step for each antenna to be used for the TRP test.
6. When all information is updated to reflect the AUT, select the
Run Test button on the EMQuest™ software toolbar to start the
response test. The software will automatically test the antenna.
However, if the cable calibration is lost, repeat steps three and
four in the Software Set-Up Procedure section above. Follow
the instructions from the software. Once the cable calibration is
complete, repeat steps four through six of this section.
6.6. Range Calibration Data
1. Once the measurements are complete, find and open the
corresponding Phi and Theta raw data files. Go to the
Equipment menu, located on toolbar at the top of EMQuest™
software window as shown in 36 above and select Tools.
2. Now select Correction File Generator in the drop down menu.
Fill in all identification information along with operator
comments. Be sure to note Theta or Phi axis in your comments
along with TIS range type.
3. In the Frequency Response Data folder, Data Type will be
“Loss”, Units will be “User-defined”, finally select the dB box.
4. Now go to the raw-data files and copy the corresponding data
into the chart given in the Correction File Generator tool. The
3126-880 antenna data may be used from 780 MHz to 982
MHz. The 3126-1845 antenna data may be used from 1635
MHz to 1995 MHz. The 3126-2140 antenna data may be used
from 1990MHz to 2280 MHz.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
53
AMS-8050, Antenna Measurement System
TRP Range Calibration
5. After all data has been inserted into the Correction File
Generator tool, select the Graph folder and double check the
data. Typical loss will be between –10.0 dB and –40.0 dB.
6. Once data is verified, select the Create File button on the
bottom of the screen and save new response file as Theta or
Phi along with TIS range type i.e. TIS_Theta Axis Correction.
7. Once both correction response files have been created and
saved, close the corresponding raw data files. Find the current
correction files to be used and open each file.
8. Next, perform a side-by-side comparison of the newly created
correction files and the current correction files to be used from
the last range calibration. If the measurements are within the
specifications, close the current correction files and archive
them into a folder in the same format as described in step 8 of
the Software Set-up Procedure section above. Archive the
current correction files before proceeding.
9. Go back to the newly created correction file. Copy the files and
paste them to the location you are storing your correction files.
These response files will now be used in all TIS measurements.
Be sure to change all parameter files that will be affected by the
newly created correction files. Range calibrations must be done
on a regular basis to ensure the integrity of the TIS
measurements.
54
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
7. Total Isotropic Sensitivity (TIS) Test
This procedure applies to Receiver Performance tests, also known as
Total Isotropic Sensitivity or TIS, for wireless handheld devices.
7.1. Equipment Required
In addition to the AMS-8050 system and components, the user will
need the following to complete this test:
•
Windows compatible computer
•
Wireless communication tester
7.2. Pre-Calibration
NOTE: All equipment must have current calibration to be effective
during this test.
1. Visually inspect the AMS-8050 test system for damaged
absorber material, which would comprise the test accuracy.
If damaged absorber if found, replace it before conducting
the test.
2. With the equipment turned off, daisy chain the wireless
communication tester with the Model 2090 controller and the
computer system using GPIB cables.
3. Turn all test equipment on and allow it to warm up a
minimum of 30 minutes.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
55
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
7.3. Software Set-up Procedure
1. Open the EMQuest™ measurement software.
2. Select and load the appropriate CDMA or GSM sensitivity
parameter file for the desired cellular standard test. All
parameter files are standard for each test and should not
have to be modified.
NOTE: Refer to the EMQuest™ software help file and the
AMS-8050 video tutorial included with this manual for additional
information regarding parameter creation.
3. Fill in all test information fields in the parameter file by
entering the appropriate variables (i.e. EUT manufacturer,
model number, test type, and serial number).
Figure 39. Setting Up the Parameter File
56
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
4. Open the Test Information table by pressing the “+” symbol
to view other folders. Select the Operator/Comments folder
and fill in name of operator, temperature, humidity factor,
test comments (setup description, etc.) and any other
variables.
Figure 40. Complete the Test Information Table
©ETS-Lindgren—May, 2006
Rev. A—P#399777
57
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
5. The Parameters folder should remain standard for each test
and will not be modified once the correct parameter file is
created.
Figure 41. Parameter Folder Set-Up
58
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
6. Select the Frequency Range folder and set the desired
frequencies (Receive Channels).
Figure 42. Frequency Range Set-Up
7. Set it to the desired RX test channel (with the same
frequency as in test parameter file). See chart below.
Band
Cellular A
Cellular B
Cellular C
PCS A
PCS B
PCS C
Channel
Pair
1013
384
777
25
600
1175
Designation
CH1-RX
CH2-RX
CH3-RX
CH4-RX
CH5-RX
CH6-RX
Frequency
(MHz)
869.7
881.52
893.31
1931.25
1960.00
1988.75
Table 1. CDMA Cellular and PCS Test Frequencies
©ETS-Lindgren—May, 2006
Rev. A—P#399777
59
AMS-8050, Antenna Measurement System
Band
Channel Pair
Cellular A
128
Cellular B
190
Cellular C
251
Total Isotropic Sensitivity (TIS) Test
Designation
CH1-RX
CH2-RX
CH3-RX
Frequency (MHz)
869.2
881.6
893.8
Table 2. GSM-850Test Frequencies
Band
PCS A
PCS B
PCS C
Channel
Pair
512
661
810
Designation
CH1-RX
CH2-RX
CH3-RX
Frequency
(MHz)
1930.20
1960.00
1989.80
Table 3. GSM-1900 Test Frequencies
8. The Equipment folder settings are standard for each test.
Figure 43. Equipment Folder Set-Up
60
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
9. Select the Corrections folder and enter the required range
calibration and reference antenna gain corrections for each
polarization. Include any other cable corrections, etc. as
needed. For CDMA test, a correction factor must be
generated to show the difference between a test run with
2.0% frame error rate (FER) with 500 frames and 0.5% FER
with 2,000 Frames. The 2,000 frames measurement should
be added to the file, while the 500 frames measurement will
be subtracted from the file.
Figure 44. Corrections Folder Set-Up
©ETS-Lindgren—May, 2006
Rev. A—P#399777
61
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
10. Select the Paths folder and set your raw data path.
Figure 45. Path Folder Set-Up
11. Output and Notification tabs are not required.
62
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
7.4. Hardware Set-Up Procedure
With the software and wireless communication tester set-up
complete, the next step is to position the phone in the chamber. It is
crucial that the tests start at the correct position or the data will be
misrepresented.
The “free-space” start position will always involve the phone facing
the back wall. This position is zero degrees. The earpiece is
positioned directly over center of the turntable.
Figure 46. Free-Space Mount with EUT
©ETS-Lindgren—May, 2006
Rev. A—P#399777
63
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
The figure below illustrates the SAM, left ear position. The start
position is when the SAM head nose will faces toward the back
wall. Remember that the ear to be tested will always be at the
center of rotation. Therefore, for the left ear, the position will start
with the SAM head below the center of rotation. By design the
center of the SAM head/earpiece is directly over center of the
turntable.
Figure 47. SAM Head Left Ear, EUT Mounted
64
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
The figure below illustrates the SAM, right ear position. In the start
position the SAM head nose will face the back wall. Remember that
the ear being tested will always be at the center of rotation.
Therefore, for the right ear, the start position for the SAM head is
above the center of rotation. By design the center of the SAM
Head/Earpiece is directly over center of the turntable.
Figure 48. SAM Head Right Ear, EUT Mounted
Mount the phone on the MAPS as shown in figures 46 - 48 above
for the corresponding test type. Reinstall all absorber onto
turntable.
NOTE: Verify the absorber sits firmly on the top of the turntable
and will not damage the surrounding absorber when the turntable
begins to rotate.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
65
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
At this point, the software is ready to establish a call. Select the
Run Test button on the EMQuest™ toolbar to start the TIS test and
follow the software queries.
CDMA phones have auto-answer capabilities; therefore, it may not
be necessary to remove the phone from the phantom head to
access the buttons.
If the phone loses power/connection during the test, the software
will “time-out” waiting on the wireless communication tester.
Recharge the phone or switch batteries as needed and re-establish
the call before selecting retry. Typical problems associated with
“time-out” failures are the result of wrong frequency/channel on the
software compared to the wireless communication tester. Check
both settings to determine they are the same.
Repeat these steps for all frequencies and modes.
7.5. Relative Sensitivity on Intermediate Channels
Once the test is complete, determine and note the following
settings (located on the bottom of the table section in raw data) as
they will be used later in this procedure.
Bore Sight Phi position for all three channels: A single
orientation can be used for all three reference channels, provided
that the measured radiated sensitivity for that orientation and each
reference channel is within 3 dB of the best sensitivity measured for
that channel.
Bore Sight Theta position for all three channels. A single
orientation can be used for all three reference channels, provided
that the measured radiated sensitivity for that orientation and each
reference channel is within 3 dB of the best sensitivity measured for
that channel.
Determine which polarization had the greatest sensitivity at bore
sight.
66
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
Figure 49. Raw Data Table
©ETS-Lindgren—May, 2006
Rev. A—P#399777
67
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
1. Open and select the appropriate intermediate channel
parameter file for the desired cellular standard test. All
parameter files are standard for each test.
NOTE: Refer to the EMQuest™ software help file and the
AMS-8050 video tutorial included with this manual for additional
information regarding parameter creation.
Figure 50. Parameter File
2. Refer to the Software Setup section above for steps to filling out
test information in parameter file.
68
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
3. Select the Frequency Range folder and set the desired
frequencies and step size (See table 4 and table 5 below for
each band’s receive channels).
Figure 51. Frequency Range Set-Up Folder
©ETS-Lindgren—May, 2006
Rev. A—P#399777
69
AMS-8050, Antenna Measurement System
Total Isotropic Sensitivity (TIS) Test
Test Type Channels
GSM-850 128-160
Test Type Channels
GSM-1900 512-588
Steps of 2
GSM-850 159-221
Steps of 2
GSM-1900 586-736
Steps of 2
GSM-850 221-251
Steps of 2
GSM-1900 734-810
Steps of 2
Steps of 2
Table 4. GSM Intermediate Channels and Step Size
Test Type Channels
CDMA PCS 25-315
Steps of 10
CDMA PCS
315-890
Steps of 10
CDMA PCS 885-1175
Test Type Channels
CDMA Cell
1013
1023
10-190
Steps of 10
CDMA Cell 190-380
384
390-580
Steps of 10
CDMA Cell 580-770
777
Steps of 10
Steps of 10
Table 5. CDMA Intermediate Channels and Step Size
70
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Isotropic Sensitivity (TIS) Test
AMS-8050, Antenna Measurement System
4. Once the desired frequency range is inserted into the
EMQuest™ software, select the Equipment folder and go to
Sensitivity tab. Take the power level for the greatest sensitivity
at bore sight and increase RF signal level of the wireless
communication tester by 5 dB. For example, if the greatest
sensitivity is –68.5 dB, increase by 5 dB to –63.5 dB. Insert this
value into the Initial Signal Level (Max) field.
5. Ensure that the correct RF switching is selected for the
corresponding polarization to be measured.
6. Once all values are inserted into the proper location, select the
Run Test button on the EMQuest™ toolbar and follow the
software queries. CDMA phones have auto-answer capabilities;
therefore it may not be necessary to remove the phone from the
phantom head to access the buttons.
7. When the test is finished, check the data thoroughly as it will be
noted with a pass or fail. If the EUT fails at any frequency, recheck all settings and repeat the test.
For both the full TIS test and the intermediate channel tests,
Freespace, SAM left ear and SAM right ear configurations for all
channels and frequencies will be conducted.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
71
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
8. Total Radiated Power (TRP) Test
This procedure applies to Radiated Power tests, also known as Total
Radiated Power or TRP, for wireless handheld devices.
8.1. Additional Equipment Required
In addition to the AMS-8050 system and components, the user will
need the following to complete this test:
•
Windows compatible computer
•
Spectrum analyzer
•
Wireless communication tester
8.2. Pre-Calibration
NOTE: All equipment must have current calibration to be effective
during this test.
1. Visually inspect the AMS-8050 test system for damaged
absorber material, which would comprise the test accuracy.
2. With equipment turned off, daisy chain the wireless
communication tester with the spectrum analyzer, multi-device
controller and the computer system using GPIB cables.
3. Turn all test equipment on and allow it to warm up a minimum of
30 minutes.
72
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
8.3. Software Set-up Procedure
1. Open the EMQuest™ measurement software.
Figure 52. Open EMQuest™
2. Select and load the appropriate parameter file for the desired
cellular standard test. All parameter files are standard for each
test and will not have to be modified.
NOTE: Refer to the EMQuest™ software help file and the
AMS-8050 video tutorial included with this manual for additional
information regarding parameter creation.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
73
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
3. Fill in all test information fields in the parameter file by entering
the appropriate variables (i.e. EUT manufacturer, model
number, test type, and serial number).
Figure 53. Setting Up the Parameter File
74
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
4. Open the Test Information table by pressing the “+” symbol to
view other folders. Select the Operator/Comments folder and
fill in the name of the operator, temperature, humidity factor, test
comments (setup description, etc.) and any other variables.
Figure 54. Complete the Test Information Table
©ETS-Lindgren—May, 2006
Rev. A—P#399777
75
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
5. The Parameters folder will remain standard for each test and
will not be modified once the correct parameter file is created.
Figure 55. Parameter Folder Set-Up
76
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
6. Select the Frequency Range folder and set the desired
frequencies (receive channels).
Figure 56. Frequency Range Set-Up
Parameter
Type
Band
VMAC
Setting
AMPS
800 MHz
0
Table 6. Analog Wireless Communication Tester Parameters
Band
Cellular A
Cellular A
Cellular B
Cellular B
Cellular B
Cellular B
Channel
Pair
991
991
384
384
799
799
Designation
CH1-TX
CH1-RX
CH2-TX
CH2-RX
CH3-TX
CH3-RX
Frequency
(MHz)
824.04
869.04
836.52
881.52
848.97
893.97
Table 7. Analog Test Frequencies
©ETS-Lindgren—May, 2006
Rev. A—P#399777
77
AMS-8050, Antenna Measurement System
Parameter
Type
Band Class (Cell only)
Band Class (PCS only)
Channel (Reg.)
SID
NID
Radio Configuration
Service Option
Rate
Power Control
Total Radiated Power (TRP) Test
Setting
CDMA
0
1
As needed *
As needed *
As needed *
1
2
Full
Always Up
*Registration channel, SID/NID are service
provider specific and need to be provided by
customer.
Table 8. CDMA Wireless Communication Tester Parameters
Cellular and PCS Bands
7. Select the Equipment folder and set the required equipment
settings. The Phi and Theta positioner as well as the
polarization switch settings are standard for each test.
Figure 57. Equipment Set-Up Overview
78
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
Figure 58. Equipment Set-Up GSM Screen
8. It is important that adequate resolution is available to detect all
peaks and nulls in the resulting signal. The specified value
should be acceptable for a 501-point/per/trace analyzer. For
analyzers with fewer points, reduce the span to a slightly wider
than the maximum pulse width. Using a spectrum analyzer with
sufficient resolution and sweep rate, configure the following:
Resolution BW
Video BW
Sweep time
Detector
Filter
Trigger Mode
Trigger Level
Analog
(AMPS)
300 kHz
300 kHz
50 ms
Positive Peak
Average
Free Run
-65
GSM
TDMA
CDMA
300 kHz
300 kHz
0.7 ms
Positive Peak
GSM Pulse
Video
-65
300 kHz
300 kHz
7 ms
Positive Peak
TDMA Pulse
Video
-65
3 MHz
10 kHz
100 ms
RMS
Average
Free Run
-65
Table 9. Spectrum Analyzer Configuration
©ETS-Lindgren—May, 2006
Rev. A—P#399777
79
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
9. Set the trigger level slightly above the noise floor (5-10 dB),
sufficient to avoid spurious triggers from the noise floor, but low
enough to provide maximum dynamic range. For AMPS and
CDMA, the trigger level is used by the average filter solely to
detect a dropped call. If the signal drops below the trigger level,
the software will retry the specified number of times and then
pop up a dialog for user intervention.
10. Adjust the attenuation and reference level settings to give
maximum dynamic range (lowest noise floor) while ensuring that
the maximum signal level received stays away from the top of
the spectrum analyzer graticule. Gain compression is likely if
the signal gets within a few dB of or passes the top of the
spectrum analyzer window. The ceiling level setting is provided
for the filter to protect against this possibility. Set the ceiling at
or below the top of the spectrum window for most
configurations.
11. The RMS detector is preferred, as it averages many samples for
each data point. The sample detector only records one sample
per data point. The trace is noisier, resulting in a noisier
resulting average power.
80
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
12. Select the Corrections folder and enter the required range
calibration and reference antenna gain corrections for each
polarization. Include any other cable corrections, etc. as
needed. Also, enter the conducted power of the EUT as the
antenna port input power.
Figure 59. Correction Folder Set-Up
©ETS-Lindgren—May, 2006
Rev. A—P#399777
81
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
13. Select the Paths folder and set your raw data path.
Figure 60. Paths Folder Set-Up
14. Output and Notification tabs are not required.
82
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
8.4. Hardware Set-Up Procedure
With the software and wireless communication tester set-up
complete, the next step is to position the phone in the chamber. It is
crucial that the tests start at the correct position or the data will be
misrepresented.
The “free-space” start position will always involve the phone facing
the back wall. This position is zero degrees. The earpiece is
positioned directly over center of the turntable.
Figure 61. Free-Space Mount with EUT
©ETS-Lindgren—May, 2006
Rev. A—P#399777
83
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
The figure below illustrates the SAM, left ear position. In the start
position the SAM head nose will face the back wall. Remember that
the ear being tested will always be at the center of rotation.
Therefore, for the left ear, the start position for the SAM head is
below the center of rotation. By design the center of the SAM
Head/Earpiece is directly over center of the turntable.
Figure 62. SAM Head Left Ear, EUT Mounted
84
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Total Radiated Power (TRP) Test
AMS-8050, Antenna Measurement System
The figure below illustrates the SAM, right ear position. In the start
position the SAM head nose will face the back wall. Remember that
the ear being tested will always be at the center of rotation.
Therefore, for the right ear, the start position for the SAM head is
above the center of rotation. By design the center of the SAM
Head/Earpiece is directly over center of the turntable.
Figure 63. SAM Head Right Ear, EUT Mounted
Mount the phone on the selected positioner as shown in figures 61
to 63 for the corresponding test type. Install all absorber onto
turntable.
NOTE: Verify the absorber sits firmly on the top of the turntable
and will not damage the surrounding absorber when the turntable
begins to rotate.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
85
AMS-8050, Antenna Measurement System
Total Radiated Power (TRP) Test
At this point, the software is ready to establish a call. Select the
Run Test button on the EMQuest™ toolbar to start the TRP test
and follow the software queries.
CDMA phones have auto-answer capabilities; therefore, it may not
be necessary to remove the phone from the phantom head to
access the buttons.
If the phone loses power/connection during the test, the software
will “time-out” waiting on the wireless communication tester.
Recharge the phone or switch batteries as needed and re-establish
the call before selecting retry. Typical problems associated with
“time-out” failures are the result of wrong frequency/channel on the
software compared to the wireless communication tester. Check
both settings to determine they are the same.
Repeat these steps for all frequencies and modes.
86
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Passive Test
AMS-8050, Antenna Measurement System
9. Passive Test
This procedure applies to general passive tests performed in the AMS8050 test system
9.1. Equipment Required
In addition to the Ams-8050 system and components, the user will
need the following to complete this test:
•
Windows Compatible Computer
•
Vector Network Analyzer with multi ports
•
Alignment tool such as a laser
9.2. Pre-Calibration
NOTE: All equipment must have current calibration to be effective
during this test.
1. Visually inspect the test system for damaged absorber
material, which would comprise the test accuracy.
2. With equipment turned off, daisy chain the vector network
analyzer with the Model 2090 controller and the computer
system using GPIB cables.
3. Turn all test equipment on and allow it to warm up for a
minimum of 30 minutes.
9.3. Range Calibration for Passive Antenna Testing
See previous sections of this manual for information regarding this
test procedure.
Note: Calibration must be performed with all of the cables in the
test configuration that feed the AUT from the network analyzer and
measure the received signal back from dual polarized horn antenna
to the network analyzer. This includes all necessary RF-connectors
and rotary joints that may be required to perform full 3D testing.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
87
AMS-8050, Antenna Measurement System
Passive Test
9.4. Software Set-Up Procedure
1. Open the EMQuest™ measurement software.
Figure 64. Open EMQuest™
2. Select and load the appropriate parameter file for the desired
test or create new parameter file.
88
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Passive Test
AMS-8050, Antenna Measurement System
3. Fill in all test information fields in the parameter file by
entering the appropriate variables (i.e. EUT manufacturer,
model number, test type, and serial number).
Figure 65. Complete Test Information Fields
©ETS-Lindgren—May, 2006
Rev. A—P#399777
89
AMS-8050, Antenna Measurement System
Passive Test
4. Open Test Information folder by pressing the “+” symbol to
view other folders.
5. Select the Operator/Comments folder and fill in the name of
operator, temperature, humidity factor, test comments (setup
description, etc.) and any other.
6. Enter the required parameters for Parameter folder or use
pre-set parameters with your opened parameter file.
Figure 66. Parameters Folder
90
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Passive Test
AMS-8050, Antenna Measurement System
7. Select the Frequency Range folder and set the desired
frequencies to be tested.
Figure 67. Frequency Range Set-Up
©ETS-Lindgren—May, 2006
Rev. A—P#399777
91
AMS-8050, Antenna Measurement System
Passive Test
8. Select the Equipment folder and enter the equipment
settings. Phi positioner, Theta positioner and the polarization
switch are standard for each test and should not be
modified.
Figure 68. Equipment Folder Equipment Settings
92
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Passive Test
AMS-8050, Antenna Measurement System
9. Enter the required test parameters for the vector network
analyzer such as: Points per trace, IF Bandwidth, Power and
Sweep Time. Note that when performing passive tests the
calibration setting must be set for no calibration.
Figure 69. Test Parameter Set-Up
©ETS-Lindgren—May, 2006
Rev. A—P#399777
93
AMS-8050, Antenna Measurement System
Passive Test
10. Select the Corrections folder and enter the required range
calibration and reference antenna gain corrections for each
polarization. Include any other cable corrections, etc. as
needed.
Figure 70. Correction Set-Up
94
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Passive Test
AMS-8050, Antenna Measurement System
11. Select the Paths folder and set your raw data path.
Figure 71. Paths Folder Set-Up
12. The Output and Notification folders are not required.
©ETS-Lindgren—May, 2006
Rev. A—P#399777
95
AMS-8050, Antenna Measurement System
Passive Test
This page intentionally left blank.
96
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Maintenance
AMS-8050, Antenna Measurement System
10. Maintenance
The AMS-8050 antenna measurement system requires minimal
maintenance to sustain accuracy and ease of use. The following items
outline suggested maintenance.
10.1. Hatch Maintenance
Periodically, the user must clean the finger stock around the hatch
of the AMS-8050 with isopropyl alcohol. Note that finger-stock
exists on both the hatch and the hatch-frame. Apply the cleaning
agent and wipe the springs carefully, ensuring that the cloth does
not catch on the springs bending or breaking them. The contact
surfaces of the hatch leaf must be kept clean from dirt and grease.
It is very important that the RF-contact springs and knives are kept
clean.
Regularly check for foreign objects in the contact spring profile.
Foreign objects may damage the fingerstock and the hatch frame.
Promptly remove any foreign objects. If damage occurs to the
fingerstock, contact customer service to order replacement parts.
Figure 72. AMS-8050 Hatch Fingerstock Area
CAUTION
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Do not grease or paint the fingerstock.
97
AMS-8050, Antenna Measurement System
Maintenance
10.2. Antenna Calibration
Only the dipole antennas included with the AMS-8050 must be
calibrated regularly. Please refer to the IEEE standards for
frequency of calibration suggested for each type of antenna.
10.3. Part Lubrication
A tube of silicone oil is included with the AMS-8050 system. The
user should periodically use this oil to lube the synthetic pieces of
the dipole and SAM head mounts.
98
©ETS-Lindgren—May, 2006
Rev. A—P#399777
Warranty
AMS-8050, Antenna Measurement System
11. Warranty
SCOPE AND DURATION OF WARRANTIES
Seller warrants to Buyer that the AMS-8050 to be delivered hereunder will be (1) free from
defects in material, manufacturing workmanship, and title, and (2) conform to the Seller’s
applicable product descriptions and specifications, if any, contained in or attached to Seller’s
quotation. If no product descriptions or specifications are contained in or attached to the
quotation, Seller’s applicable product descriptions and specifications in effect on the date of
shipment shall apply. The criteria for all testing shall be Seller’s applicable product
specifications utilizing factory-specified calibration and test procedures and instruments.
All product warranties, except the warranty of title, and all remedies for warranty failures are limited in
time as shown in the table below.
Duration of Warranty Period
Product Warranted
Workmanship
1 year*
Anechoic AMS-8050
5 years
Performance
Filters
1 year
Doors & Accessories
1 year
MAPS
2 years
Controller
2 years
Antennas
2 years
Ear Rotation Mount
2 years
Free Space Mount
2 years
Optional Custom Equipment
1 Year
*Workmanship of the AMS-8050 includes the quality of AMS-8050 shielding and absorber only and
excludes Filters, Doors or EMCO equipment.
Any product or part furnished to Buyer during the warranty period to correct a warranty failure shall be
warranted to the extent of the unexpired term of the warranty applicable to the repaired or replaced
product.
The warranty period shall commence on the date the product is delivered to Buyer; however, if Seller
assembles the product, or provides technical direction of such assembly, the warranty period for such
product shall commence on the date the assembly of the product is complete. Notwithstanding the
foregoing, in the event that the assembly is delayed for a total of thirty (30) days or more from the date
of delivery for any reason or reasons for which Seller is not responsible, the warranty period for such
product may, at Seller’s options, commence on the thirtieth (30th) day from the date such product is
delivered to Buyer. Buyer shall promptly inspect all products upon delivery. No claims for shortages will
be allowed unless shortages are reported to Seller in writing within ten (10) days after delivery. No other
claims against Seller will be allowed unless asserted in writing within thirty (30) days after delivery (or
assembly if the products are to be assembled by Seller) or, in the case of alleged breach of warranty,
within the applicable warranty period.
WARRANTY EXCLUSIONS
Except as set forth in any applicable patent indemnity, the foregoing warranties are exclusive and in lieu
of all other warranties, whether written, oral, express, implied, or statutory. EXCEPT AS EXPRESSLY
STATED ABOVE, SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED, BY STATUTE OR
OTHERWISE, WHETHER OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE
OR USE OR OTHERWISE ON THE PRODUCTS, OR ON ANY PARTS OR LABOR FURNISHED
DURING THE SALE, DELIVERY OR SERVICING OF THE PRODUCTS. THERE ARE NO
WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF.
Warranty coverage does not include any defect or performance deficiency (including failure to conform
to product descriptions or specifications) which results, in whole or in part, from (1) negligent storage or
handling of the product by Buyer, its employees, agents, or contractors, (2) failure of Buyer to prepare
the site or provide an operating environmental condition in compliance with any applicable instructions
or recommendations of Seller, (3) absence of any product, component, or accessory recommended by
Seller but omitted at Buyer’s direction, (4) any design, specification, or instruction furnished by Buyer, its
employees, agents or contractors, (5) any alteration of the product by persons other than Seller, (6)
combining Seller’s product with any product furnished by others, (7) combining incompatible products of
©ETS-Lindgren—May, 2006
Rev. A—P#399777
99
AMS-8050, Antenna Measurement System
Warranty
Seller, (8) interference with the radio frequency fields due to conditions or causes outside the product as
furnished by Seller, (9) improper or extraordinary use of the product, or failure to comply with any
applicable instructions or recommendations of Seller, or (10) acts of God, acts of civil or military
authority, fires, floods, strikes or other labor disturbances, war, riot, or any other causes beyond the
reasonable control of Seller. This warranty does not cover (1) contact fingers or replacements unless
loss is caused by a defect in material or manufacturing workmanship within the scope of this warranty
and (2) removal and reconstruction of walls, partitions, ceilings and other facility costs arising from
repair or replacement of the product or parts thereof by Seller under the warranty. Seller does not
warranty products of others which are not included in Seller’s published price lists for shielding products
and systems supplies and accessories.
BUYER’S REMEDIES
If Seller determines that any product fails to meet any warranty during the applicable warranty period,
Seller shall correct any such failure by either, at its option, repairing, adjusting, or replacing without
charge to Buyer any defective or nonconforming product, or part or parts of the product. Seller shall
have the option to furnish either new or exchange replacement parts or assemblies.
Warranty service during the applicable warranty period will be performed without charge to Buyer within
the contiguous 48 United States during Seller’s normal business hours. After the warranty period,
service will be performed at Seller’s prevailing service rates. Subject to the availability of personnel,
after-hours service is available upon request at an additional charge. For service outside the contiguous
48 United States, travel and per diem expenses, when required, shall be the responsibility of the Buyer,
or End User, whichever is applicable.
The remedies set forth herein are conditioned upon Buyer promptly notifying Seller within the applicable
warranty period of any defect or nonconformance and making the product available for correction.
The preceding paragraphs set forth Buyer’s exclusive remedies and Seller’s sole liability for
claims based on failure of the products to meet any warranty, whether the claim is in contract,
warranty, tort (including negligence and strict liability) or otherwise, and however instituted,
and, upon the expiration of the applicable warranty period, all such liability shall terminate. IN
NO EVENT SHALL SELLER BE LIABLE TO BUYER FOR ANY SPECIAL INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND ARISING OUT OF, OR AS
A RESULT OF, THE SALE, DELIVERY, NON-DELIVERY, SERVICING, ASSEMBLING, USE
OR LOSS OF USE OF THE PRODUCTS OR ANY PART THEREOF, OR FOR ANY
CHARGES OR EXPENSES OF ANY NATURE INCURRED WITHOUT SELLER’S WRITTEN
CONSENT DESPITE ANY NEGLIGENCE ON BEHALF OF THE SELLER. IN NO EVENT
SHALL SELLER’S LIABILITIES UNDER ANY CLAIM MADE BY BUYER EXCEED THE
PURCHASE PRICE OF THE PRODUCT IN RESPECT OF WHICH DAMAGES ARE
CLAIMED. This agreement shall be construed in accordance with laws of the State of Illinois.
In the event that any provision hereof shall violate any applicable statute, ordinance, or rule of
law, such provision shall be ineffective to the extent of such violation without invalidating any
other provision hereof.
Any controversy or claim arising out of or relating to the sale, delivery, nondelivery, servicing,
assembling, use or loss of use of the products or any part thereof or for any charges or expenses in
connection therewith shall be settled in Austin, Texas by arbitration in accordance with the Rules of the
American Arbitration Association, and judgment upon the award rendered by the Arbitrator may be
entered in either the Federal District Court for the Western District of Texas or the State District Court in
Austin, Texas, all of the parties hereto consenting to personal jurisdiction of the venue of such court and
hereby waive the right to demand a jury trial under any of these action.
100
©ETS-Lindgren—May, 2006
Rev. A—P#399777