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HP 8921A Cell Site Test Set

User’s Guide

Firmware Version A.15.00 and above

HP Part No. 08921-90022

Printed in U. S. A.

December 1997

Rev. F

DUPLETXRX PREV TESTS

CO NFIHELPMSSG HOLD PRINT

SCREEN CONTROL

LOCAL

ADRS

RECAL

SAVE

MEAS

PRESE

INSTRUMENT STATE

DATA FUNCTIONS

INCR

REF

INCR

METER

IN CR

AVG

LO HI

CURSOR CON-

PUSH TO

CANCE

SHIFT

k1’

k2’

k3’

ASSIG

RELEA

USER

DATA

789

456

123

ENTER

GHz

MHz

kHz

Ω

ppm

ON/OFF

YES

MEMO

AUDIO IN

LOHI

MAX

AUDIO SQUELCVOL-

MIC/

MA X POW ER 200

ANT INDUPLEX OUTRF IN/OUT

MAX POWER

POWE

OF O

Manufacturer’s Declaration3
Safety Considerations4
General4
Safety Earth Ground4
Safety Symbols4
Safety Considerations for this Instrument5
Declaration of Conformity8
Regional Sales and Service Offices10
Contents13
Table of Contents15
Before Connecting a Radio40
Connecting a Radio to the Test Set40
Accessing the Test Set’s Screens41
List of Screens41
Accessing Screens42
Changing a Field’s Setting43
Different Types of Fields43
Underlined Immediate-Action Field44
Unit-Of-Measure Field44
Numeric-Entry Field45
To Make a One-Of-Many Choice45
To Change a Value45
One-Of-Many Field45
How Do I Verify that the Test Set Is Operating Properly?46
Instrument Quick Check46
Instrument Functional Diagram47
Configuring Your Test Set49
To Set the Date and Time50
General Operating Information50
To Set RF Voltage Interpretation (50 /Emf)50
To Set Screen Intensity50
To Change the Beeper Volume51
To Verify or Change the Low-Battery Setting51
Operating Overview53
Example of How Global Fields Work54
Interaction between Screens54
- Priority RX TEST and TX TEST Fields55
- Example of How Priority Fields Work56
- Where to Access Measurements57
Displaying Measurements57
- Displaying RF Measurements58
- Transmitter Frequency58
- Transmitter Frequency Error58
- Transmitter Power58
- Displaying AF Measurements59
- FM Deviation, am Depth, AC Level59
- AF Measurements Selected by AF Analyzer Input Setting59
- SINAD, Distortion, SNR, AF Frequency, DC Level, DC Current60
- AF Power60
- To Change the Measurement’s Unit-Of-Measure61
- To Use the Analog METER Format62
- To Make Beat Frequency Measurements62
- To Enter Numbers63
- Decimal Values63
Entering and Changing Numbers63
- Changing the Unit-Of-Measure for Settings64
- Hexadecimal Values64
- To Enter and Change the Unit-Of-Measure64
- Entering the Unit-Of-Measure for Settings64
- To Change the Increment or Decrement Setting65
- Using the Pre-Defined Increment/Decrement Keys65
- Specifying an Increment Value65
- To Change the Increment Value65
- To Print a Screen’s Contents66
Printing a Screen66
To Set a HI And/Or lo LIMIT67
Using Measurement Limit Indicators67
- To Reset or Remove Limits68
- To Reset a Limit that Has Been Exceeded68
- To Remove a Limit68
- Example of Setting HI and lo Limits68
- To Use Measurement Averaging69
Averaging Measurements69
- To Set a Specific Reference70
- To Use the Present Value as a Reference70
Setting a Measurement Reference70
- To Save an Instrument Setup71
- To Recall an Instrument Setup71
Saving and Recalling Instrument Setups71
- Example of Saving and Recalling an Instrument Setup72
- To Remove (Clear) an Individual Save Register72
- To Clear All Save Registers73
- Register Names73
- POWERON Settings73
- BASE Settings74
- Memory Considerations74
- Instrument Hardware Changes74
Using USER Keys75
- To Use the Pre-Assigned Local USER Keys76
- An Example of Pre-Assigned Local User Keys76
- Example of Assigning a Local USER Key77
- To Release Local USER Keys77
- To Assign Local USER Keys77
- To Assign Global USER Keys78
- To Release Global USER Keys78
- Example of Assigning a Global USER Key78
- To Set an RF Offset79
- Example of Setting an RF Offset79
Setting an RF Generator/Analyzer Offset79
- Running IBASIC Programs from Memory Cards80
- Using HP-IB Control80
Using Remote Control80
- Equivalent Front-Panel Control Characters81
- To Configure for Serial Port Operation81
- Using an ASCII Terminal81
- Adjacent Channel Power Screen85
How the Test Set Measures Adjacent Channel Power (ACP)86
Field Descriptions87
- ACP Meas87
  - Operating Considerations87
  - The Adjacent Channel Power Screen87
  - Afgen1 Freq88
  - Afgen1 to88
  - Carrier Ref88
  - Channel BW88
  - Relationship between Tune Freq, Ch Offset, and Channel BW Fields89
- Ch Offset90
  - Ext TX Key90
  - Input Atten90
  - Input Port91
  - Lower and Upper ACP [Ratio:level]91
- Res BW92
  - Tune Freq92
  - Tune Mode92
  - TX Freq Error/Tx Frequency93
  - TX Power93
  - TX Pwr Zero94
  - AF Analyzer Screen95
  - AF ANALYZER Functional Block Diagram96
  - Block Diagram96
  - AC Level97
  - AF Anl in97
- AF Cnt Gate98
  - AF Freq98
  - SNR Operation98
  - AM Depth99
  - Audio in lo99
  - Current99
  - DC Current99
  - DC Level100
  - De-Emp Gain100
  - De-Emphasis100
  - Distn100
  - Detector101
  - Detector Types101
  - Ext Load R102
  - Filter 1 and Filter 2102
  - FM Deviation102
- Gain Cntl103
- Input Gain103
- Notch Freq104
- Notch Gain104
- Pk Det to104
  - Scope to105
  - Settling105
  - Sinad106
  - Snr106
- Speaker ALC107
- Speaker Vol107
- TX Freq Error/ TX Frequency107
- Call Processing Subsystem109
- Description of the Call Processing Subsystem110
  - Operational Overview111
  - Call Processing State Diagram112
  - Accessing the Call Processing Subsystem’s Screens113
  - Call Processing Subsystem’s Screens113
  - Connecting a Mobile Station114
- Using the Call Processing Subsystem114
  - Connecting a Mobile Station to the Test Set115
  - 600 Ohm Impedance116
  - Mobile Station Audio out Impedance116
  - Generalized Procedures Using the Call Processing Subsystem117
- The CALL CONTROL Screen118
  - Called Number120
  - Chan120
  - Cntl Channel120
  - Display121
  - AMPS, TACS, and JTACS CALL CONTROL Screen with Meas Selected122
  - CALL CONTROL Screen with Decoding Error Message Display122
  - ESN (Dec)123
  - ESN (Hex)123
  - Handoff123
  - MS ID124
  - Order125
  - Page125
  - Pwr Lvl125
  - Phone Num126
  - Register126
  - Sat127
  - Scm127
  - Sid127
  - System Type128
  - TX Freq Error128
- Using the CALL CONTROL Screen to Test Call Processing Functions129
  - Conditioning the Test Set for Call Processing130
  - Configure the Test Set131
  - Register a Mobile Station132
  - Turn on the Test Set’s Control Channel132
  - Page a Mobile Station133
  - Paging a Mobile Station that Has Not Registered with the Test Set134
  - Handoff a Mobile Station to a New Voice Channel135
  - Release a Mobile Station135
  - Change the Transmit Power Level of a Mobile Station136
  - Originate a Call from a Mobile Station137
  - Send an Alert Order to a Mobile Station138
- CALL DATA Screen139
- Display Word142
- CALL DATA Screen Message Field Descriptions144
  - RECCW a Message Fields144
  - RECCW B Message Fields146
  - RECCW C Message Fields148
  - RECCW D Message Fields149
  - RECCW E Message Fields150
  - Rvcordcon Message Fields151
  - To View Decoded Reverse Channel Words from Mobile Station Registration153
- Using the CALL DATA Screen153
  - To View the Decoded Reverse Channel Words from a Mobile Station Page154
  - To View the Decoded Reverse Channel Words from Mobile Station Release158
  - To View the Reverse Channel Words from a Mobile Station Origination160
- CALL BIT Screen161
- Message Contents that Can be Modified Using the CALL BIT Screen163
- CALL BIT Screen Message Field Descriptions167
  - SPC WORD1 Message Fields167
  - SPC WORD2 Message Fields169
  - ACCESS Message Fields171
  - REG INC Message Fields173
  - REG ID Message Fields175
  - C-FILMESS Message Fields177
  - MS WORD1 Message Fields179
  - Msmessord Message Fields180
  - MS Intvch Message Fields182
  - FVC O Mes Message Fields183
  - FVC V Mes Message Fields185
  - Selecting the Message Content Generation Method187
- Using the CALL BIT Screen187
  - System Operation When Data Spec Field Set to Std188
  - System Operation When Data Spec Field Set to Bits189
  - Changing the Content of a Message Field190
  - Typical Example191
- ANALOG MEAS Screen192
- Using the ANALOG MEAS Screen195
  - To Make an RF Sensitivity Measurement196
  - To Make an FM Hum and Noise Measurement197
- CALL CONFIGURE Screen198
  - Configure Screen201
  - Antenna in202
  - Base Freq (User Defined)203
  - Beeper204
  - Chan Space204
  - Date205
  - Duplex out205
  - Firmware205
  - Intensity207
  - Low Battery207
  - Notch Coupl207
  - Range Hold208
  - RF Chan Std209
  - RF Display210
  - RF Gen Volts210
  - RF In/Out211
  - RF Level Offset211
  - RF Offset212
  - RX/TX Cntl213
  - Total RAM214
- Signaling Decoder Screen215
- Decoder Frequency Measurements216
- Field Descriptions for Decoder Modes216
  - The Decoder’s Signal Source216
  - AMPS-TACS Control/Voice and NAMPS/NTACS Control Channel Decoder217
- AMPS-TACS, NAMPS-NTACS Decoder217
  - Decoder Mode Differences217
  - Arm Meas218
  - The NAMPS-NTACS Voice Channel Decoder218
  - Gate Time219
  - Input Level219
  - Num of Bits220
  - Polarity220
  - RECC Data (NAMPS-NTACS: RECC)220
  - Single/Cont221
  - Stop Meas221
  - Trig Level221
  - Trigger Pattern (Bin)221
  - Decoding the Reverse Control Channel (RECC) Data222
  - Interaction with the Encoder222
- Using the AMPS/TACS, NAMPS/NTACS Decoder222
  - Decoding AMPS-TACS Reverse Voice Channel (RVC) Data223
  - Decoding NAMPS-NTACS Reverse Voice Channel (RVC) Data223
  - Interpreting Decoded Data224
  - NAMPS-NTACS Reverse Voice Channel Measurements225
- Continuous Digital Controlled Squelch System Decoder226
  - The CDCSS Sequence Decoder Screen226
  - AF Analyzer Settings230
- Using the CDCSS Decoder230
- Digital Paging Decoder231
  - Data Display232
  - Data Rate232
  - Display Page232
- Dual-Tone Multi-Frequency (DTMF) Decoder235
- Measurement Limits240
- Using the DTMF Decoder240
- EDACS Decoder241
  - EDACS Transmitter Testing244
  - Transmitter Test Procedure244
- Using the EDACS Decoder244
  - Define the Control Channel Settings245
  - Prepare the Decoder for Transmitter Measurements245
  - Make Basic Transmitter Measurements246
  - Making Other Transmitter Measurements246
- Function Generator Decoder247
  - The Function Generator Decoder Screen247
  - Decoding Considerations250
- Using the Function Generator Decoder250
- LTR Decoder251
- Decoding Mobile Radio Signaling Data255
- Using the LTR Decoder255
- MPT 1327 Decoder257
  - Decoder Triggering258
  - Manually Decoding MPT 1327 Signals258
  - Triggering the MPT 1327 Decoder259
  - Detecting and Querying Messages260
- NMT Decoder262
  - The NMT Decoder Screen263
  - Frame Log264
  - Load Test265
  - NMT Test Entry265
  - General Encoder Operation267
- Using the NMT Decoder/Encoder267
  - General Decoder Operation268
  - Manual Testing of NMT Radios269
  - Standard Equivalents269
  - Required Test Set Settings270
  - Special Frame Suffixes271
- Creating NMT Tests272
  - Entering Tests into the Decoder’s RAM273
  - Using Direct Command Entry274
  - Programming Using an External Computer275
  - Copying Programs to Mass Storage276
  - Downloading Programs276
  - Begin277
  - End277
  - EXIT N277
  - Program Command Syntax277
  - GOTO L278
  - RCHAN C278
  - TCHAN C278
  - SEND F279
  - SEND F N279
  - Valid Channel Assignments279
  - Clear280
  - REPEAT N L280
  - WAIT N280
  - The Tone Sequence Decoder Screen281
- Tone Sequence Decoder281
  - Freq282
  - Freq Error282
  - Duplex Test Screen285
  - DUPLEX TEST Functional Block Diagram286
- Signaling Encoder (AF Generator 2)299
- Field Descriptions for Encoder Modes300
- AMPS-TACS NAMPS-NTACS Encoder301
  - AMPS-TACS/NAMPS-NTACS Mode Forward Control Channel (FOCC)301
  - Control and Voice Channel Identifiers301
  - AMPS-TACS Mode Forward Voice Channel (FVC)302
  - NAMPS-NTACS Mode Forward Voice Channel (FVC)302
- B/I Delay (FOCC)303
  - Bursts303
  - Busy/Idle (FOCC)303
- Data Level303
  - AMPS-TACS/NAMPS-NTACS FOCC Message and Filler Data Format305
  - Filler (FOCC)305
  - FM Coupling306
  - Message (FOCC)307
  - NAMPS-NTACS FVC Message Data Output Format309
  - Message/Dst (FVC)310
  - P310
  - SAT Freq (FVC)311
  - SAT Level (FVC: AMPS-TACS)311
  - Send DSAT (FVC)311
  - Send Filler (FOCC)311
  - Send Mode312
  - Standard312
  - Stop DSAT (FVC)312
  - Stop Filler (FOCC)312
  - Automated Test Software313
  - Encoder/Decoder Interaction313
- Using the AMPS-TACS, NAMPS-NTACS Encoder313
- Using this Information313
- CDCSS Encoder314
  - The CDCSS Encoder Mode Screen314
  - Afgen2 to315
  - Audio out315
  - CDCSS Data Stream Bit Assignments318
  - The CDCSS Data Stream318
  - The Turn-Off Code318
- Using the CDCSS Encoder318
- Digital Paging Encoder319
- The Digital Paging Encoder Mode Screen319
- Error Bit320
- Mssg Length321
- DTMF Sequence Encoder324
- The DTMF Sequence Encoder Mode Screen324
- EDACS Encoder328
  - The EDACS Trunked Radio Encoder Mode Screen328
  - Control Channel, Number329
  - Control Channel, RX Frequency329
  - Control Channel, TX Frequency329
- Group ID330
- Handshake330
- Logical ID331
- Signaling Dev332
  - Sub-Audible Dev333
  - Working Channel, Number333
- Using the EDACS Encoder334
  - Testing EDACS Mobiles335
  - Testing the Mobile’s Receiver335
  - Testing the Mobile’s Transmitter335
  - Connect the Mobile to the Test Set336
  - Mobile Receiver Test Procedure336
  - Get the Mobile up on the Control Channel337
  - Make Receiver Measurements338
- Function Generator Encoder339
  - The Function Generator Encoder Screen339
  - Afgen2 Freq340
- LTR Encoder342
- The LTR Trunked Radio Encoder Mode Screen342
- Ltr Message344
- How Message 1 and Message 2 Fields Are Used to Create Trunking Data346
- Using the LTR Encoder346
  - Radio Test Examples347
  - To Test Your Receiver347
  - To Make a 12 Db SINAD Measurement348
  - To Test Your Transmitter348
  - Performing Channel Changes349
- Address Qualifier350
- MPT 1327 Encoder350
- The MPT 1327 Trunked Radio Encoder Mode Screen350
- Aloha Number351
- Control Channel352
  - Delay Parameter for Repeat Transmissions353
  - Delay Parameter to Actual Response Delay353
  - Traffic Channel353
  - Undisplayed Controls353
  - Forward Control Channel Message and Filler Buffers354
  - Sequence of Events in Assembling a Signaling Message356
  - Forward Control Channel in Control Mode and Not Sending357
  - Forward Control Channel in Control Mode and Sending359
  - Control and Traffic Channel Message Structures360
  - Traffic Channel Message Generation360
  - Forward Control Channel Message Structure361
  - Traffic Channel Message Structure361
  - Signaling Mode Transitions Table362
  - Manually Testing MPT 1327 Radios363
  - System Identity363
- Using the MPT 1327 Encoder363
- Radio Unit under Test364
- Simulated Calling Unit365
- Nordic Mobile Telephone (NMT) Encoder366
- The NMT Encoder Screen366
- Access Channel Number367
- Access Channel Power367
- Add Info367
- NMT Additional Information Bits368
- Alarm Level High369
- Alarm Level Low369
- Batt Save370
- BS Identity370
- Calling Channel Number371
  - Calling Channel Power371
  - Dut372
- Meas Field Strength373
  - Mgmt/Maint373
  - Msn373
- Phi Signal373
  - Password374
  - Pre-Emp374
  - SIS Challenge374
  - SIS Response374
  - Traffic Area - Main376
  - Traffic Channel (Alt) Number376
  - Traffic Channel (Alt) Power376
  - Traffic Channel (Main) Number377
  - Traffic Channel (Main) Power377
  - The Tone Sequence Encoder Mode Screen378
- Tone Sequence Encoder378
  - Symbol Definition380
  - Symbol Sequence380
  - Help Screen381
  - I/O Configure Screen383
  - The I/O Configure Screen384
  - Data Length385
  - HP-IB Address385
  - IBASIC Echo385
  - Inst Echo385
  - Parity386
  - Rcv Pace386
  - Save/Recall387
  - Serial Baud387
  - Serial in388
  - Stop Length388
  - Xmt Pace388
  - Message Screen389
  - Oscilloscope Screen391
  - The Oscilloscope Screen and Menus392
  - Oscilloscope Main Functions393
  - Oscilloscope Main Menu Fields393
  - How the Oscilloscope Displays Measurements394
  - Markers on the Oscilloscope394
  - Oscilloscope Marker Menu Fields394
  - Marker Measurements395
  - Reading Measurement Results at the Oscilloscope’s Markers395
  - Oscilloscope Trigger Menu Fields396
  - Cont/Single397
  - Level (DIV)397
  - Pre-Trig397
  - Oscilloscope Input Indicator398
  - Selecting the Oscilloscope’s Input398
  - Using the Oscilloscope398
  - Print Configure Screen399
- Abort Print400
  - FF at End400
  - FF at Start400
  - The Printer Configurations Screen400
- Radio Interface Screen403
- Data I/O404
- Radio Interface Functional Description404
  - Audio Analyzer405
  - Audio Source405
  - External Transmitter Key Relay405
  - Interrupt Capability405
- Field Descriptions406
  - The Radio Interface Screen406
  - I/O Config408
  - Output Data408
  - Parallel Data in408
  - Setting the Radio Interface’s Logic Level409
- Using the Radio Interface (Manual Operation)409
  - Inputting Data411
  - Outputting Data412
  - HP-IB Command Summary415
  - Inputting Data over HP-IB415
- Using the Radio Interface (Remote Operation)415
  - Outputting Data over HP-IB416
  - Using Interrupts over HP-IB416
  - RF Analyzer Screen417
  - RF ANALYZER Functional Block Diagram418
  - The RF Analyzer Screen419
  - RF Cnt Gate423
  - Sensitivity423
  - Squelch423
  - RF Generator Screen429
  - RF GENERATOR Functional Block Diagram430
  - The RF Generator Screen431
  - Atten Hold434
  - MIC Pre-Emp434
  - Mod in to435
  - Output Port435
  - RF Gen Freq435
  - RX Test Screen439
  - The RX Test Fields and Their Functions440
  - The RX Test Screen441
  - Service Screen447
  - Counter Connection448
  - RAM Initialize449
  - Spectrum Analyzer Screen451
  - The Spectrum Analyzer Screen and Menus452
  - Center Freq453
  - Ref Level453
  - Spectrum Analyzer Main Functions453
  - Spectrum Analyzer Main Menu Fields453
  - RF In/Ant454
  - Span454
  - RF Generator Menu Fields, Fixed Operation455
  - Using the Spectrum Analyzer with the RF Generator455
  - RF Generator Menu Fields, Tracking Operation457
  - Using the Spectrum Analyzer with the Tracking Generator457
  - Offset Freq458
  - Port/Sweep458
  - Setting Markers on the Spectrum Analyzer459
  - Spectrum Analyzer Marker Menu Fields459
  - Reading Measurement Results at the Spectrum Analyzer’s Markers460
  - Spectrum Analyzer Auxiliary Functions461
  - Spectrum Analyzer Auxiliary Menu Fields461
  - No Pk/Avg463
  - Automatic Calibration464
  - Setting Resolution Bandwidth and Sweep Rate464
  - Using the Spectrum Analyzer464
- Tests Screen465
- Description of the Tests Subsystem466
  - Tests Subsystem Screens467
  - Cnfg External Devices468
  - Exec Execution Cond468
  - The TESTS (Main Menu) Screen468
  - Freq Channel Information469
  - IBASIC IBASIC Cntrl469
  - Library469
  - Parm Test Parameters469
  - Proc Save/Delete Procedure470
  - Select Procedure Filename470
  - Select Procedure Location470
  - Seqn Order of Tests470
  - The TESTS (Channel Information) Screen471
  - Delete Ch472
  - Insert Ch472
  - Main Menu472
  - Print All472
  - The TESTS (Test Parameters) Screen473
  - The TESTS (Order of Tests) Screen474
  - Delet Stp475
  - Insrt Stp475
- TESTS (Pass/Fail Limits)476
  - The TESTS (Save/Delete Procedure) Screen478
  - Code Location479
  - Enter Procedure Filename479
  - Pass Word479
  - Procedure Library480
  - The TESTS (Execution Conditions) Screen481
  - Autostart Test Procedure on Power-Up482
  - If Unit-Under-Test Fails482
  - Output Results for483
  - Test Procedure Run Mode483
  - The TESTS (External Devices) Screen484
  - External Disk Specification485
  - The TESTS (Printer Setup) Screen487
  - The TESTS (IBASIC Controller) Screen490
- ROM Programs492
- Using the Signal Strength Meter492
- The Signal Strength Meter Screen492
- Securing a Test Procedure493
- Clearing RAM493
- TX Test Screen495
- TX TEST Functional Block Diagram496
- The TX Test Screen497
- Afgen1 Lvl500
- Connector, Key, and Knob Descriptions507
- Connector Descriptions508
- Ant in508
- Audio in509
- Audio Monitor Output510
- Crt Video Output511
- DC Current Measurement511
- Chassis Ground511
- DC Input512
- Digital Test Connections512
- Ext Scope Trigger Input513
- Headphone513
- MIC/Acc514
- Hp-Ib514
- MEMORY CARD Slot514
- To Use the Microphone515
- MIC/ACC Operating Considerations515
- MIC in Specifications515
- MIC/ACC Connections516
- Modulation Input517
- Parallel Port517
- Pin Numbers for the Radio Interface Connector519
- Radio Interface519
- Serial Port523
- Serial Port Connections524
- 10 Mhz REF INPUT525
- 10 Mhz REF OUTPUT525
- DATA Keys526
- DATA FUNCTIONS Keys527
- INSTRUMENT STATE Keys528
- SCREEN CONTROL Keys528
- Miscellaneous Keys and Buttons529
- USER Keys529
- Knob Descriptions530
- Modifications, Accessories, Manuals, Support531
- Hardware Upgrades and Modifications532
- Hardware Retrofits and Modifications532
- Accessories535
- Power Cables540
- HP Support for Your Instrument547
- Customer Training547
- Error Messages549
- General Information about Error Messages550
- Positive Numbered Error Messages551
- Negative Numbered Error Messages552
- IBASIC Error Messages553
- HP-IB Error Messages554
- Text Only Error Messages555
- The Message Display556
- Non-Recoverable Firmware Error557
- Required Hardware for Additional Test Set Functions559
- Decoder Buffer Full560
- Turn off Either am or FM Settings560
- Cal File Checksum Incorrect - Initializing File560
- Squelch Interrupt Overflow560
- One or more Self Tests Failed561
- Change Ref Level, Input Port or Attenuator561
- Change RF Gen Amplitude, Output Port or Atten Hold561
- Direct Latch Write Occurred561
- Index563

Brand	HP
Model	8921A
Category	Test Equipment
Language	English

HP 8921A User Manual

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