Freedom R8000 Series User manual

R8000 Series
Communications Systems Analyzer
AUTOTUNE USER GUIDE
Motorola APX Series Radios
Freedom Communication Technologies
2002 Synergy Blvd, Suite 200
Kilgore, Texas 75662
Copyright 2021 Freedom Communication Technologies
All Rights Reserved
Printed in U.S.A.
FCT-1215 Rev. C

AutoTune for Motorola APX Series Radios User Guide
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AUTOTUNE™ SOFTWARE LICENSE AGREEMENT
The software license agreement governing use of the R8000 Series
Communications Systems Analyzer AutoTune software is located in FCT-1365
R8000 Series Communications Systems Analyzer Operator’s Manual.
TRADEMARKS
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trademarks of Freedom Communication Technologies, Inc.
MOTOROLA, MOTO, MOTOROLA SOLUTIONS and the Stylized M logo are
trademarks or registered trademarks of Motorola Trademark Holdings, LLC and
are used under license. All other trademarks are the property of their respective
owners. © 2011–2013 Motorola Solutions, Inc. All rights reserved.
OpenG License
Copyright (c) 2002, Cal-Bay Systems, Inc. <[email protected]>
Copyright (c) 2002, Jean-Pierre Drolet <[e-mail]>
Copyright (c) 2002-2007, Jim Kring <[e-mail]>
Copyright (c) 2002-2005, Rolf Kalbermatter <[e-mail]>
Copyright (c) 2003-2004, Paul F. Sullivan <[e-mail]>
Copyright (c) 2004, Enrique Vargas <[e-mail]>
Copyright (c) 2004, Heiko Fettig <[e-mail]>
Copyright (c) 2004, Michael C. Ashe <[e-mail]>
Copyright (c) 2005-2006, MKS Instruments, Inc., author: Doug Femec
<[e-mail]>, IM dafemec
Copyright (c) 2006, JKI <[e-mail]>
Copyright (c) 2006, JKI <[e-mail]>; Authors: Jim Kring
<[e-mail]>, Philippe Guerit <[e-mail]>
Copyright (c) 2007, JKI <[e-mail]> (Author: Jim Kring
<[e-mail]>)
Copyright (c) 2008, Ton Plomp <[e-mail]>
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TABLE OF CONTENTS
1. Introduction....................................................................................................1
2. Scope ............................................................................................................1
2.1. Supported Models....................................................................................1
2.2. Required Options.....................................................................................1
3. Motorola APX Portable Radio Test Setup......................................................2
3.1. Cable Sweep ...........................................................................................2
3.2. Test Hardware .........................................................................................3
3.3. APX Test Setup .......................................................................................3
4. Motorola APX Portable Alignment and Test Descriptions..............................5
4.1. Tx PA Bias (Auto) ....................................................................................5
4.2. Reference Frequency ..............................................................................6
4.3. TX Power Out ..........................................................................................7
4.4. TX Attenuator Limit ..................................................................................9
4.5. TX PA Saturation Reference..................................................................10
4.6. Tx Deviation Balance.............................................................................11
4.7. Rx Front End Filter.................................................................................12
4.8. Front End Gain ......................................................................................13
4.9. Rx VLIF DCA Phase Error .....................................................................14
4.10. Rx Duty Cycle Adjustment..................................................................15
4.11. RF Power ...........................................................................................16
4.12. Rx Distortion .......................................................................................17
4.13. Rx Analog Sensitivity (SINAD)............................................................18
4.14. Noise Squelch Threshold ...................................................................19
4.15. Modulation Fidelity..............................................................................20
4.16. Symbol Deviation................................................................................21
4.17. P25 Phase II Modulation Fidelity ........................................................22
4.18. P25 Phase II Symbol Deviation ..........................................................23
4.19. Rx Digital Sensitivity (P25 BER) .........................................................24
4.20. Rx Sensitivity (P25 Phase II BER)......................................................25
4.21. Voice Modulation (internal).................................................................26
4.22. Voice Modulation (external)................................................................28
5. Motorola APX Mobile Radio Test Setup ......................................................29
5.1. Cable Sweep .........................................................................................29
5.2. Test Hardware .......................................................................................30
5.3. Motorola APX Mobile Test Setup...........................................................30
5.4. Motorola APX Mobile High Power Test Setup .......................................31
6. Motorola APX Mobile Alignment and Test Descriptions..............................33
6.1. Tx PA Bias.............................................................................................34
6.2. Reference Frequency ............................................................................35
6.3. TX Power Out ........................................................................................37
6.4. TX Current Limit.....................................................................................39
6.5. TX Voltage Limit ....................................................................................40

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6.6. Tx Deviation Balance.............................................................................41
6.7. Rx Front End Filter.................................................................................42
6.8. Rx Distortion ..........................................................................................42
6.9. Rx Duty Cycle Adjustment .....................................................................45
6.10. RF Power ...........................................................................................46
6.11. Rx Distortion .......................................................................................47
6.12. Rx Analog Sensitivity (SINAD)............................................................48
6.13. Noise Squelch Threshold ...................................................................49
6.14. Modulation Fidelity..............................................................................50
6.15. Symbol Deviation................................................................................51
6.16. P25 Phase II Modulation Fidelity ........................................................52
6.17. P25 Phase II Symbol Deviation ..........................................................53
6.18. Rx Digital Sensitivity (P25 BER) .........................................................54
6.19. Rx Sensitivity (P25 Phase II BER)......................................................55
6.20. Voice Modulation (internal).................................................................56
7. Basic Troubleshooting .................................................................................58
8. Support Information .....................................................................................59
8.1. Technical Support..................................................................................59
8.2. Sales Support ........................................................................................59
9. References ..................................................................................................60
APPENDIX A. Sample Test Result Report..................................................... A-1
APPENDIX B. Revision History...................................................................... B-1
LIST OF FIGURES
Figure 3-1. APX Portable Test Setup Diagram .....................................................4
Figure 4-1. Place keyed radio next to analyzer speaker. ....................................26
Figure 4-2. Adjust analyzer volume until about 60% rated system deviation is
measured............................................................................................................27
Figure 5-1. Motorola APX Mobile Test Setup Diagram ......................................31
Figure 5-2. Motorola APX Mobile High Power Test Setup Diagram...................32
Figure 6-1. AutoTune prompt when test/alignment requires switching bands.....33
Figure 6-2. Place keyed microphone next to analyzer speaker. .........................56
Figure 6-3. Adjust analyzer volume until about 60% rated system deviation is
measured............................................................................................................57
Figure B-1. Sample Test Result Report ............................................................ A-3

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LIST OF TABLES
Table 4-2. Required R8x00 options for AutoTune for Motorola APX Series radios.
..............................................................................................................................1
Table 3-1. Portable Test Hardware Table .............................................................3
Table 4-1. Analyzer Configuration for Tx PA Bias (Auto) alignment......................5
Table 4-2. Tx PA Bias (Auto) alignment results ....................................................5
Table 4-3. Analyzer Configuration for Reference Frequency ................................6
Table 4-4. Reference Frequency alignment results ..............................................6
Table 4-5. Reference Frequency test results........................................................6
Table 4-6. Analyzer Configuration for TX Power Out............................................7
Table 4-7. Power Characterization Points alignment results.................................7
Table 4-8. Tx Power Characterization alignment results.......................................8
Table 4-9. Analyzer Configuration for Tx Attenuator Limit ....................................9
Table 4-10. Tx Attenuator Limit alignment results.................................................9
Table 4-11. Analyzer Configuration for Tx PA Saturation Reference..................10
Table 4-12. Tx PA Saturation Reference alignment results ................................10
Table 4-13. Analyzer Configuration for Tx Deviation Balance alignment ............11
Table 4-14. Tx Deviation Balance alignment results...........................................11
Table 4-15. Analyzer Configuration for Rx Front End Filter alignment................12
Table 4-16. Rx Front End Filter alignment results...............................................12
Table 4-17. Analyzer Configuration for Front End Gain alignment......................13
Table 4-18. Front End Gain alignment results ....................................................13
Table 4-19. Analyzer Configuration for Rx VLIF DCA Phase Error alignment ....14
Table 4-20. Rx VLIF DCA Phase Error alignment results ...................................14
Table 4-21. Analyzer Configuration for Rx Duty Cycle Adjustment alignment ....15
Table 4-22. R Duty Cycle Adjustment results .....................................................15
Table 4-23. RF Power test results.......................................................................16
Table 4-24. Analyzer Configuration for Rx Distortion Test ..................................17
Table 4-25. Rx Distortion test results..................................................................17
Table 4-26. Analyzer Configuration for Rx Analog Sensitivity (SINAD) test........18
Table 4-27. Rx Analog Sensitivity (SINAD) test results.......................................18
Table 4-28. Analyzer Configuration for Noise Squelch Threshold test................19
Table 4-29. Noise Squelch Threshold test results ..............................................19
Table 4-30. Analyzer Configuration for Modulation Fidelity test..........................20
Table 4-31. Modulation Fidelity test results.........................................................20
Table 4-32. Analyzer Configuration for Symbol Deviation test............................21
Table 4-33. Symbol Deviation test results...........................................................21
Table 4-34. Analyzer Configuration for P25 Phase 2 Modulation Fidelity test ....22
Table 4-35. P25 Phase 2 Modulation Fidelity test results ...................................22
Table 4-36. Analyzer Configuration for P25 Phase 2 Symbol Deviation test ......23
Table 4-37. P25 Phase 2 Symbol Deviation test results .....................................23
Table 4-38. Analyzer Configuration for Rx Digital Sensitivity (P25 BER) test .....24
Table 4-39. Rx Digital Sensitivity (P25 BER) test results ....................................24
Table 4-40. Analyzer Configuration for Rx Sensitivity (P25 Phase II BER) test ..25
Table 4-41. Rx Sensitivity (P25 Phase II BER) test results.................................25

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Table 4-42. Analyzer Configuration for Voice Modulation (internal) test .............26
Table 4-43. Voice Modulation (internal) test results............................................27
Table 4-44. Analyzer Configuration for Voice Modulation (external) test ............28
Table 4-45. Voice Modulation (external) test results...........................................28
Table 5-1. Mobile Test Hardware Table..............................................................30
Table 6-1. Analyzer Configuration for Tx PA Bias alignment ..............................34
Table 6-2. Tx PA Bias alignment results .............................................................34
Table 6-3. Analyzer Configuration for Reference Frequency ..............................35
Table 6-4. Reference Frequency alignment results ............................................35
Table 6-5. Reference Frequency test results......................................................36
Table 6-6. Analyzer Configuration for TX Power Out..........................................37
Table 6-7. Power Detection Calibration alignment results ..................................37
Table 6-8. Tx Power Characterization alignment results.....................................37
Table 6-9. Analyzer Configuration for Tx Current Limit.......................................39
Table 6-10. Tx Current Limit alignment results ...................................................39
Table 6-11. Analyzer Configuration for Tx Voltage Limit.....................................40
Table 6-12. Tx Voltage Limit alignment results ...................................................40
Table 6-13. Analyzer Configuration for Tx Deviation Balance alignment ............41
Table 6-14. Tx Deviation Balance alignment results...........................................41
Table 6-15. Analyzer Configuration for Rx Front End Filter alignment................42
Table 6-16. Rx Front End Filter alignment results...............................................42
Table 6-17. Analyzer Configuration for Rx Duty Cycle Adjustment alignment ....45
Table 6-18. R Duty Cycle Adjustment results .....................................................45
Table 6-19. RF Power test results.......................................................................46
Table 6-20. Analyzer Configuration for Rx Distortion Test ..................................47
Table 6-21. Rx Distortion test results..................................................................47
Table 6-22. Analyzer Configuration for Rx Analog Sensitivity (SINAD) test........48
Table 6-23. Rx Analog Sensitivity (SINAD) test results.......................................48
Table 6-24. Analyzer Configuration for Noise Squelch Threshold test................49
Table 6-25. Noise Squelch Threshold test results ..............................................49
Table 6-26. Analyzer Configuration for Modulation Fidelity test..........................50
Table 6-27. Modulation Fidelity test results.........................................................50
Table 6-28. Analyzer Configuration for Symbol Deviation test............................51
Table 6-29. Symbol Deviation test results...........................................................51
Table 6-30. Analyzer Configuration for P25 Phase 2 Modulation Fidelity test ....52
Table 6-31. P25 Phase 2 Modulation Fidelity test results ...................................52
Table 6-32. Analyzer Configuration for P25 Phase 2 Symbol Deviation test ......53
Table 6-33. P25 Phase 2 Symbol Deviation test results .....................................53
Table 6-34. Analyzer Configuration for Rx Digital Sensitivity (P25 BER) test .....54
Table 6-35. Rx Digital Sensitivity (P25 BER) test results ....................................54
Table 6-36. Analyzer Configuration for Rx Sensitivity (P25 Phase II BER) test ..55
Table 6-37. Rx Sensitivity (P25 Phase II BER) test results.................................55
Table 6-38. Analyzer Configuration for Voice Modulation (internal) test .............56
Table 6-39. Voice Modulation (internal) test results............................................57
Table 7-1. AutoTune Troubleshooting Chart.......................................................58
No table of figures entries found.

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AutoTune for Motorola APX Series Radios User Guide
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1. Introduction
The Freedom Communication Technologies R8000 Series Communications Systems
Analyzer AutoTune™ (hereafter “AutoTune”) is designed to provide an automated test
and alignment solution for supported two-way radios.
2. Scope
This document is intended to provide information regarding the tests and alignments
performed by AutoTune for Motorola APX portable and mobile two-way radios. This
document is restricted to radio-specific information.
Please refer to the R8000 Series Communications System Analyzer Owner’s Manual
(FCT-1365) for an overview and basic operating instructions for AutoTune itself.
2.1. Supported Models
The following Motorola APX Series radio models are supported:
•APX 900
•APX 1000/1000i
•APX 1500/1500 Enhanced
•APX 2000
•SRX 2200
•APX 2500
•APX 4000/4000Li
•APX 4500/4500Li/4500 Enhanced
•APX 6000/6000Li/6000XE/6000 Enhanced
•APX 6500/6500 Enhanced
•APX 7000/7000XE
•APX 7500
•APX 8000/8000H/8000XE
•APX 8500/8500HP
2.2. Required Options
Option Name
Reason
P25 Conventional Test Mode (R8-P25)
Used to perform P25 Tx Tests and
Sensitivity (P25 BER) tests.
P25 Phase 2 Test Mode (R8-P25_II)
Used to perform P25 Phase II Tx Tests and
Sensitivity (P25 Phase II BER) tests
Motorola APX(R8-AT_APX)
Motorola APX AutoTune, including
Enhanced (‘B’) series
Motorola APX8000 (R8-AT_APX8000)
Motorola APX 8x00 AutoTune
Table 2-1. Required R8x00 options for AutoTune for Motorola APX Series radios.

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3. Motorola APX Portable Radio Test Setup
Before servicing a radio with AutoTune, ensure the analyzer is running the current
system software version. Each system version release contains issue resolutions and/or
new/enhanced features.
•On the analyzer, navigate to Settings > About… Note the System version shown.
•Browse to the Freedom software upgrades webpage:
https://freedomcte.com/upgrades/
•If the first Current System Version shown on the webpage is more recent than
the analyzer System version, follow the webpage instructions to download and
apply the current system version software to your analyzer.
To perform the test and alignment procedures, the APX Portable radio must be
connected to the R8000 Communications Systems Analyzer as shown in Figure 3-1.
APX Portable Test Setup Diagram.
Make certain that the radio under test is configured as described in the
corresponding diagram before attempting to perform an alignment or test.
Failure to do so may result in poor radio performance and/or damage to the
analyzer or radio equipment under test.
3.1. Cable Sweep
Every RF cable connected between a radio under test and the analyzer attenuates the
signal propagating through it. The amount of attenuation varies by several factors such
as operating frequency, cable length, and cable type. Ensuring this attenuation is
accounted for by the analyzer is important to the accuracy of several tests and
alignments, primarily power tests.
Sweep the RF cable used between the Radio and Analyzer, label the RF cable with the
stored cable sweep name, and enable the Cable Sweep feature in the analyzer System,
System Settings… menu. Refer to Application Note FCT-1017 Utilizing Cable Sweep on
the Freedom Communications System Analyzer for instructions on how to perform a
cable sweep.

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3.2. Test Hardware
Test Aid
Recommended part
Description
USB radio programming
cable
Motorola PMKN4013_
USB cable for programming and
servicing radio.
Variable DC power supply
Astron VS-50M
DC power supply with sufficient
current sourcing capability.
RF test cable
Megaphase RF Orange
series
Shielded RF cable with low loss.
Reference cable
Pomona 5697
BNC cable for sweeping RF test
cable.
6 dB attenuator
Mini-Circuits 15542
Attenuator for reducing
Reference cable VSWR.
Audio cables
Pomona 5697
Connects analyzer and portable
test set for audio signals.
Portable test set
Motorola RLN4460_
Routes signals between radio
and analyzer for Rx audio and
microphone tests.
Table 3-1. Portable Test Hardware Table
3.2.1. Battery Eliminator
Battery eliminators interface portable radios to DC power supplies. They’re needed
because batteries cannot produce consistent voltage/current when the radio is keyed for
extended time periods, as it will be during an alignment. Attempting to use even a
nominally good battery will eventually result in power alignment failures. A battery
eliminator should always be used while performing portable radio alignments and tests
with AutoTune to achieve consistent alignment performance.
For APX portable radio models, use the following Motorola battery eliminator parts. For
more information, refer to the applicable Motorola basic radio service manual.
APX 900 / 1000 / 2000 / 4000
• Part Number: 66-012031001
APX 5000 / 6000 / 7000 / 8000 / SRX 2200
• Part Number: 66-009254001
3.3. APX Test Setup
Refer to the diagram below for the proper test setup. Note that the correct setting for
each RLN4460 test set control is highlighted in yellow.

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Figure 3-1. APX Portable Test Setup Diagram

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4. Motorola APX Portable Alignment and Test Descriptions
Note: Throughout this section are references to Test Frequency. Test Frequencies are
band- and mode -specific. A table of the frequencies used by each band may be found
in the respective radio service manual. See the References section for more details.
Note: All analyzer Mode settings are Standard unless otherwise indicated.
4.1. Tx PA Bias (Auto)
RF
Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
40 dB
Table 4-1. Analyzer Configuration for Tx PA Bias (Auto) alignment
4.1.1. Alignment
Note: This alignment applies only to APX 8000, APX 6000 Enhanced, and APX NEXT
portable models.
The Tx PA Bias alignment adjusts the radio power amplifier voltages. The radio is
placed into Test Mode. The radio PA bias is enabled and the current bias auto-adjusted.
The current bias is disabled. The final results are written to the log file.
Name
Description
Result
Pass or Fail. Pass unless radio error.
Frequency
Test Frequency
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot after alignment
Table 4-2. Tx PA Bias (Auto) alignment results

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4.2. Reference Frequency
RF Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
30 dB
Table 4-3. Analyzer Configuration for Reference Frequency
4.2.1. Alignment
The radio is placed into Test Mode at the highest TX Test Frequency and commanded
to transmit. Using a best linear fit algorithm, two frequency error measurements are
taken at two different radio softpot values. These frequency error measurements are
used to calculate the softpot value which minimizes frequency error. After programming
this new softpot value into the radio, the radio softpot is fine tuned until minimum
frequency error is detected. The frequency error is compared against test limits and the
final results written to the log file.
Name
Description
Result
Pass or Fail. Frequency Error within Max Limit, Min Limit
Frequency
Test Frequency
Freq Error
Measured frequency error after alignment
Min Limit
Minimum Limit (inclusive) for frequency error
Max Limit
Maximum Limit (inclusive) for frequency error
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot after alignment
Table 4-4. Reference Frequency alignment results
4.2.2. Test
The radio is placed into Test Mode at the highest TX Test Frequency and commanded
to transmit. The frequency error is measured by the analyzer and compared to test
limits. The final results are written to the log file.
Name
Description
Result
Pass or Fail. Frequency Error within Max Limit, Min Limit
Frequency
Test Frequency
Freq Error
Measured frequency error
Max Limit
Maximum Limit (inclusive) for frequency error
Min Limit
Minimum Limit (inclusive) for frequency error
Softpot
Radio softpot which yields Freq Error
Table 4-5. Reference Frequency test results

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4.3. TX Power Out
RF
Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
40 dB
Table 4-6. Analyzer Configuration for TX Power Out
4.3.1. Alignment
The TX Power Out alignment is composed of two parts: Tx Power Characterization
Points tuning and Tx Power Characterization tuning.
Power Characterization Points tuning adjusts the characterization points to account for
the variability of the power detection circuitry between radios. The radio is placed into
Test Mode and commanded to transmit at the first Test Frequency. The output level is
measured and then adjusted until near to a band-specific output level defined by the
APX Tuner software help file.
This process is repeated for all test frequencies. The final results are written to the log
file.
Name
Description
Result
Pass or Fail. Measured Power within manufacturer limits
Frequency
Test Frequency
Power
Measured radio output level
Target Power
Ideal Power
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot after alignment
Table 4-7. Power Characterization Points alignment results
Power Characterization tuning characterizes the power output level of the radio. The
radio is placed into Test Mode and commanded to transmit. Beginning at the lowest TX
Test Frequency, the output level is measured at two different points for each TX Test
Frequency. These measurements are used to calculate and program power coefficients
use to normalize the radio power output level across the radio band as specified by the
radio’s basic service manual.
This process is repeated for all test frequencies. The final results are written to the log
file.

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Name
Description
Result
Pass or Fail. Measured Power within manufacturer limits
Frequency
Test Frequency
Low Power
Measured low radio output level
High Power
Measured high radio output level
Diff (>1.5W)
Difference between Low Power and High Power. If outside
indicated limit, alignment is marked as Fail.
Table 4-8. Tx Power Characterization alignment results

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4.4. TX Attenuator Limit
RF Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
40 dB
Table 4-9. Analyzer Configuration for Tx Attenuator Limit
4.4.1. Alignment
Note: The Tx Attenuator Limit alignment applies to APX 8000 models only.
The Tx Attenuator Limit alignment adjusts the attenuator limiting radio PA driver power.
The radio is placed into Test Mode and commanded to transmit at the first Test
Frequency. The output level is measured and then adjusted until near to the band-
specific output level defined by the APX Family Tuner software.
This process is repeated for all test frequencies. The final results are written to the log
file.
Name
Description
Result
Pass or Fail. Measured Power within manufacturer limits
Frequency
Test Frequency
Power
Measured radio output level
Target
Ideal Power
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot after alignment
Table 4-10. Tx Attenuator Limit alignment results

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4.5. TX PA Saturation Reference
RF
Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
40 dB
Table 4-11. Analyzer Configuration for Tx PA Saturation Reference
4.5.1. Alignment
The Tx PA Saturation Reference alignment adjusts the radio for optimal TDMA F2
performance.
The radio is placed into Test Mode and commanded to transmit at the first Test
Frequency. The output level is measured and then adjusted until near to the band-
specific output level defined by the APX Family Tuner software help file.
This process is repeated for all test frequencies. The final results are written to the log
file.
Name
Description
Result
Pass or Fail. Power within Min Limit, Max Limit
Frequency
Test Frequency
Power
Measured radio output level
Min Limit
Minimum inclusive limit for Power to Pass alignment
Max Limit
Maximum inclusive limit for Power to Pass alignment
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot after alignment
Table 4-12. Tx PA Saturation Reference alignment results

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4.6. Tx Deviation Balance
RF
Control
Port
Frequency
Modulation
Attenuation
Monitor
RF IN/OUT
Test Frequency
FM
20 dB
Table 4-13. Analyzer Configuration for Tx Deviation Balance alignment
4.6.1. Alignment
The radio is placed into Test Mode at the highest TX Test Frequency and commanded
to transmit. The radio generates an 100 Hz modulation tone and the deviation of this
tone is measured with the analyzer. The radio then generates a 3 kHz modulation tone
and the deviation of this tone is measured with the analyzer. The radio softpot is
adjusted until the deviation difference between the first and second tones is within
range. This adjustment is performed for each TX Test Frequency and the percent
difference is compared against test limits. The results for each TX Test Frequency are
written to the log file.
Name
Description
Result
Pass or Fail. Percent difference between low and high tone
deviation less than or equal to Variance.
Frequency
Test Frequency
Low Tone
Deviation measured at 100 Hz tone
High Tone
Deviation measured at 3 kHz tone
Variance
Measured difference between Low and High Tone deviation
Max Limit
Maximum passable percent difference (inclusive) between Low and
High Tone deviation
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot setting after alignment
Table 4-14. Tx Deviation Balance alignment results

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4.7. Rx Front End Filter
RF Control
Port
Frequency
Modulation
Generate
RF IN/OUT, RF GEN OUT
Test Frequency
FM
Table 4-15. Analyzer Configuration for Rx Front End Filter alignment
4.7.1. Alignment
Note: This alignment is only performed for UHF R1 and UHF R2 band models.
The Rx Front End Filter adjusts the radio’s RF front end for optimal selectivity and
sensitivity.
The radio is placed into Test Mode at the first Rx Test Frequency. Depending on the
radio model under test, the analyzer generates a CW signal at -90 dBm or a 1 kHz
modulation tone at 60% rated channel deviation at -80 dBm. The radio softpot is then
auto-aligned. This adjustment is performed for each Rx Test Frequency. The results for
each Rx Test Frequency are written to the test log file.
Name
Description
Result
Pass or Fail. Pass unless radio reports an error.
Frequency
Test Frequency
Old Softpot
Original radio softpot setting
New Softpot
Radio softpot setting after alignment
Table 4-16. Rx Front End Filter alignment results
See Rx Analog Sensitivity (SINAD) for alignment verification test.