LTR® Trunked Mobile Radio Test Software
HP 11807A,E Option 010 Software
User’s Guide
for the HP8921A,B
HP Part No. 11807-90125
Printed in U. S. A.
January 1995
LTR® is a U.S. regis t ered trademark of E. F. Jo hns on Company.
Rev A
1
Copyright © Hewlett-Packard Company 1995
RESTRICTED
RIGHTS LEGEND
Use, duplication or disc los ure b y the U.S. Gover nment i s su bject to r estr ictions as
set forth in s ubparagra ph (c) ( 1) (ii) of the Rights in Technica l Data and Computer
Software clause in DFARS 252.227-7013.
Hewlett-Packard Company
3000 Hanover Street
Palo Alto, CA 94304
U.S.A.
Rights for non- DOD U.S. Government Departments and Age ncies are as s et forth
in FAR 52.227-19 (c) (1, 2).
2
Contents
1 Product Description
HP 11807A,E Software 14
Available Tests 16
Finding the Information You Need 18
Additional Services Available 19
Table of Contents
Table of Contents
3
Contents
2 Making Connections
What You Should Know Before Making Connections 22
4
Contents
A.14.00
Table of Contents
3 Using the Software/HP 8920B, or HP 8920A FW Above Rev.
Firmware Enhancements 28
Testing Overview 30
Customizing Testing 34
5
Contents
4 Using the Software/HP 8920A FW Rev Below A.14.00
Firmware Enhancements 60
Testing Overview 62
Running Tests 64
Customizing Testing 68
6
Contents
tions
Table of Contents
5 Test, Parameter, and Pass/Fail Limit (Specification) Descrip-
Introduction 96
Test_01: TX and RX stand-by current drain 101
Test_02: TX frequency error 103
Test_03: TX output power 104
Test_04: TX modulation limiting 106
Test_05: TX audio frequency response 108
Test_06: TX audio distortion 110
Test_07: TX microphone sensitivity 112
Test_08: TX FM hum and noise 114
Test_09: TX residual AM hum and noise 116
Test_10: TX signaling deviation & freq/code 117
Test_11: RX hum and noise 119
Test_12: RX audio distortion 121
Test_13: RX frequency response 123
Test_14: RX usable sensitivity 125
Test_15: RX conv audio squelch sensitivity 127
Test_16: RX conv squelch blocking 129
Test_17: RX squelch opening with signaling 130
Test_18: RX audio sensitivity 132
7
Contents
Test_19: RX conv variation to sens w/freq 133
Test_20: RX quick test 135
Test_21: TX quick test 138
Test_22: RT manual test 141
Parameters 145
Pass/Fail Limits (Specifications) 151
8
Contents
Table of Contents
6 Reference (Alphabetical)
Conventions Used 158
Channel Information (Frequencies) 159
Copying Files 165
Data Collection (Saving and Retrieving Test Results) 167
Disks 177
Exiting a Program 180
HP-IB Control Annunciators 181
Memory Cards 182
Parameters 188
Pass/Fail Limits (specifications) 190
Pausing or Stopping a TEST 192
Printing 193
Procedures 205
RAM Disk 211
Saving Te sts Results 214
Serial Port 215
Test Execution Conditions 217
USER Keys 219
9
Contents
7 Problem Solving
Data-Collection Function Does Not Work 223
Establishing a Trunked Transmit or Receive Channel 225
Memory Space Problems 226
Printing Problems 228
Program was Incorrectly Loaded 230
Radio Drastically Fails One or More Tests 232
Radio Fails CTCSS/CDCSS Tests 234
Radio Volume Can’t Be Set Wh en the Meter is Displayed 235
Test Procedure Doesn’t Run on Your Test Set 236
Test Set Doesn’t Power Up 237
Transmitter Isn’t Keying 238
10
Contents
Table of Contents
Glossary 241
11
Contents
Index 245
12
1
Product Description
Chapter 1
Product Description
13
Chapter 1, Product Description
HP 11807A,E Software
HP 11807A,E Software
The HP 11807A,E Software performs fast, accurate, automated tests that
determine the RF and audio performance of conventional and trunked mobile
radios using the EF Johnson LTR standard. The measurement methods and
specifications used for these tests are based on methods and values derived from
the following industry sta nda rds:
EIA/TIA-204-D (RX)
EIA-152-C (TX)
EIA RS-220 (CTCSS)
TIA/EIA-603 (RX, TX, Subaudible signaling)
Materials Included in This Package
This package contains the following materials. Verify that all the materials are
present and inspect them for damage. If a part is missing or appears to be
damaged, contact your nearest Hewlett-Packard sales or service office.
• HP 11807A Option 010 Test Software (part number 11807-10022) or HP 11807E Option 010 Test Software (part number 11807-10029).
• SRAM memory card (uninitialized), for saving your own test procedures and results.
• For HP 11807A, 32 Kbyte SRAM (part number HP 85700A).
• For HP 11807E, 64 Kbyte SRAM (part number HP 83230A).
• HP 11807A,E Option 010 Software Reference Guide (part number 11807-90125)
• HP software product license agreement
Additional Equipment Required
• HP 8920A,B RF Communications Test Set equipped as follows -
• Serial prefix greater than 3240 (SER 3240AXXXXX, displayed on the rear panel).
• HP 8920A firmware r evisi on A.0 7.03 or above. The revision is displayed in the up-
per-right corner of the I/O CONFIGURE screen. To access this screen, select the
More field (located at the bottom-right corner of the TESTS screen), then select IO
CONFIG.
• HP 8920A Option 004: Tone/Digital Signaling
• HP 8920A Option 005: 512k RAM expa nsion. The previ ously suppli ed 256k RAM
expansion is adequate for this software.
14
Recommended Equipment
• HP 8920A Option 001: High Stability Timebase
Chapter 1, Product Description
HP 11807A,E Software
Ordering Upgrades
• HP 8920A Option 003: HP-IB/Serial Communications/Current Measurement - only required for current measurements.
• HP 8920A Option 010: 400 Hz High Pass Filter (HPF)
• Programmable power supply - only required when making transmitter power measurements at high and low power supply settings. This must be an IEEE 488.2 SCPI-compatible sup ply, such as the HP 6651A thr ough HP 6655A series.
If your test set does not contain all of the required options listed above, or has an
earlier firmware revision or serial number, you must update your instrument to
meet those requirements. Order the necessary upgrade kit(s) from your local
Hewlett-Packard sales office. Regional sales offices are listed at front of this
manual.
• For firmware revi sions prior to A.07.03, order Firmware Upgrade kit: P/N 08920-61058
• For instruments with serial prefix 3240 or below, order the Modulatio n Dis tr ibution
Board: P/N 08920-60309.
• HP 8920A Option 003: HP-IB/Serial Communications/Cur rent Measu rement retrofit
kit: P/N 08920-61818
• HP 8920A Option 001: High Stability Timebase retrof it kit: P/N 08920-61835
Product Description
Chapter 1
• HP 8920A Option 004: Tone/Digital Signaling retrofit kit: P/N 08920-61052
• HP 8920A Option 005: 512k RAM expansion retrofit kit: P/N 08920-61053
• HP 8920A Option 010: 400 Hz High Pass Filter (HPF) retrofit kit: P/N 08920-61054.
(A maximum of two optional filters can be installed in your test set. If you already have
two optional filters installed, one of them must be removed before installing this kit.)
15
Chapter 1, Product Description
Available Tests
Available Tests
The following tests can be performed with this software.
1. Transmitter and Receiver stand-by current drain
2. Transmitter frequency error
3. Transmitter output power
4. Transmitter modulation limiting
5. Transmitter audio frequency response
6. Transmitter audio distortion
7. Transmitter microphone sensitivity
8. Transmitter FM hum and noise
9. Transmitter residual AM hum and noise
10. Transmitter signaling deviation & frequency/code
11. Receiver hum and noise
12. Receiver audio distortion
13. Receiver frequency response
14. Receiver usable sensitivity
15. Receiver (conventional) audio sque lch se ns itivity
16. Receiver (conventional) squelch blocking
17. Receiver squelch opening with signaling
18. Receiver audio sensitivity
19. Receiver (conventional) variation to sensitivity with frequency
16
Chapter 1, Product Description
Available Tests
Combinations of these tests are pre-configured under the following test names:
20. Receiver quick test: This test performs tests 11 through 18 listed above.
Software Features
21. Transmitter quick test: This test performs tests 2 through 10 listed above.
22. RT manual test: This test allows you to do some basic transmitter and receiver tests.
This test differs in operation from the other tests by continually displaying updated
measurement results as long as a measurement is selected: the other tests make a single
measurement for each data point, and then display the result.
See chapter 5, "Test, Parameter, and Pass/Fail Limit (Specification) Descriptions,"
on page 95
.
The followin g features sim plify testing:
• While adjustments are being made, a large meter display and auditory feedback are provided.
• Results of tests and pass/fail indications are displayed on the Tes t Set CRT, and can be
printed, or collected in a disk drive, memory card, PC, or HP Palmtop computer.
• The software allows the operator to change testing order, pass/fail limits, param e ters
and external device configurations.
Product Description
Chapter 1
17
Chapter 1, Product Description
Finding the Information You Need
Finding the Information You Need
This manual describes the setup and use of the HP 11807A,E Software with the
HP 8920A,D Test Set. The book is arranged in self-contained chapters to provide
the following information:
5
6
18
7
Additional Services Available
Consult the test set User’s Guide or call the HP 8920A,D
Hotline 1-800-922-8920 (in the USA and Canada only) and give your software
model number.
Chapter 1, Product Description
Additional Services Available
Product Description
Chapter 1
19
Chapter 1, Product Description
Additional Services Available
20
2
Making Connections
Making Connections
Chapter 2
21
Chapter 2, Making Connections
What You Should Know Before Making Connections
What You Should Know Before Making Connections
Although this manu al pr ovides inst ruct ions for conne cting the test set, it is helpf ul
to understand the ba sic operation of the HP 89 20A,B,D. Refer to the HP 8920A,B
User’s Guide for information concerning -
• Safety considerations.
• Providing power to the HP 8920A,B,D.
• Maximum signal levels for all connectors.
TRANSMITTER
CURRENT LIMITING
If a programmable power supply is listed on the External Devices (or Edit
Configuration) screen, maximum power supply current is lim ited to 1.1 × pass/fail
limit TX current drain. For example, if this pass/fail limit’s value is set to 10 Amps, power
supply current will be limited to 11 Amps.
Before testing, make sure this value is set high enough to allow proper operation
of the radio under test.
22
Chapter 2, Making Connections
What You Should Know Before Making Connections
Making Connections
Figure 1 Hardware Configuration Diagram
Chapter 2
23
Chapter 2, Making Connections
What You Should Know Before Making Connections
Required and Optional Connections
The Hardware Configuration drawing on the previous page indicates the
connections required to perform all tests under automatic control (although the
software may still prompt you to make some manual radio adjustments). Some
connections can be deleted, but may limit the tests that can be performed, or
change the way the test is performed when run.
The following table indicates what c onne ct ions are required a nd opt ional for each
test.
Table 1 Required Connections for Tests 1-12
HP 8920A to Radio Connections
X = Required
0 = Optional
RF IN/OUT ⇒Antenna X
DC CURRENT MEAS ⇒ Pwr
Supply
MIC/ACC ⇒ Microphone Key O OOOOOOOOO O O
AUDIO OUT ⇒ Microphone In O OOXXXXXOX X X
AUDIO IN ⇒ Ext. Speaker O OOOOOOOOO X X
Audio Load Across AUDIO IN O O O O O O O O O O X X
HP-IB ⇒ Programmable Pwr
c
Supply
a. Not “required” for this measurement but provides an external load for the transmitter
when keyed.
b. Not required if a programmable power supply with current measuring is used.
c. Required any time an optional programmable power supply is used.
1 2345678910 11 12
a
XXXXXXXXX X X
b
X
X XXXXXXXXX X X
OOOOOOOOO O O
Test Number
24
What You Should Know Before Making Connections
Table 2 Required Connections for Tests 13 - 22
Chapter 2, Making Connections
HP 8920A to Radio Connections
Test Number
X = Required
0 = Optional
13 14 15 16 17 18 19 20 21 22
RF IN/OUT ⇒ Antenna XXXXXXXXXX
DC CURRENT MEAS ⇒Pwr
OOOOOOOOOO
Supply
MIC/ACC ⇒ Microphone Key OOOOOOOOOO
AUDIO OUT ⇒ Microphone In OOOOOOOOXX
AUDIO IN ⇒ Ext. Speaker XXXXXXXXOX
Audio Load Across AUDIO IN X X X X X XXXOX
HP-IB ⇒ Programmable Pwr SupplyXXXXXXXXXX
Making Connections
Chapter 2
Figure 2 Exploded View of MIC/ACC Connections
25
Chapter 2, Making Connections
What You Should Know Before Making Connections
26
3
Using the Software/HP 8920B, or HP
8920A FW Above Rev. A.14.00
27
Using the Software with FW
Above A.14.00
Chapter 3
Chapter 3, Using the Software/HP 8920B, or HP 8920A FW Above Rev. A.14.00
Firmware Enhancements
Firmware Enhancements
NOTE: The firmware revision A.14.00 in the HP 8920A,D had several enhancements, which are
standard in the HP 8920B. This chapter applies to users with:
• HP 8920A test sets with firmware revision above A.14.00
• All HP 8920B test sets.
The test set’s firmware revision is displayed on the top right corner of the
configuration screen.
• Press SHIFT CONFIG to display the configuration screen and read the firmware
revision.
If you have an HP 8920A test set with firmware revision below A.14.00, refer to
chapter 4, "Using the Sof tware/ HP 892 0A FW Re v B elo w A. 14 .00, " on pa ge
59. Contact Hewlett-Packard at 1-800- 922-8920 for details on up grading your
firmware if desired.
The software can be run on the factory default settings or customized to your
individual needs and specific requirements. This chapter provides detailed
information on how to load, run, and customize the software.
The test set has two methods of accessing on-line help. In each of the screens in
the test environment, k4 (
Help) accesses specific information about how to set
up/use the current screen. SHIFT HELP accesses the master help file, with an
alphabetical listing of help topics.
28
Chapter 3, Using the Software/HP 8920B, or HP 8920A FW Above Rev. A.14.00
What You Should Know Before Using the Software
To properly operate this software, you must understand the manual operation of
your radio, and the various configuration information programmed into it.
Operating information should be provided in the radio’s manual. Programmed
information must be provided by the programmer, or by reading the information
over a data bus.
To be able to test your radio, you must know:
• Which channels are conventional and which are trunked.
• The transmit and receive frequencies for each channel.
• Conventional radio settings:
• Squelch type.
• Squelch tone frequency for CTCSS radios.
• Squelch code for CDCSS radios.
• Trunked radio settings:
• Area number
• Home channel number
• Transmit group identification number
• Receive group identification number
Firmware Enhancements
29
Using the Software with FW
Above A.14.00
Chapter 3
Chapter 3, Using the Software/HP 8920B, or HP 8920A FW Above Rev. A.14.00
Testing Overview
Testing Overview
Pressing TESTS will display what is called the TESTS (Main Menu) screen. To
begin testing, you must first load the software and make connections. From this
screen you have the option to:
Begin running tests:
• The factory default settings are acceptable for your application or
• The software has already been customized and saved to a memory card
Customize the software:
• Decide which te sts you desire to run (Order of Tests)
• you may want to run all, some, or just one of the tests.
• Specify which channels to test (Channel Information)
• the FCC RX and TX frequencies will vary from radio to radio, as well as channel
to channel.
• you may want to test one, some, or all of the channels on your radio.
• Change the pass/fail limits for specific measurements (Pass/Fail Limits)
• you may want the pass/fail limits to have tighter or looser specifications than the
default settings.
• Change the test environment and conditions (Test Parameters)
• decide output format.
• enter specific information about radio equipment and/or environment.
• Save any or all of the above customized changes to a memory card (Save/Delete
Procedure)
Set Up Test Set:
• Print test results or ce rtain screens.
• Decide when and where test results are displayed (Execution Conditions/
Printer Setup)
30
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