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Power Meter Remote Operation
Setting Measurement Limits
Agilent E4418B/E4419B Programming Guide 1-55
190 ENTER @Power;B
200 PRINT A,B
210 END
Setting Window Limits
The power meter can be configured to verify the current measurement in
either window against predefined upper and/or lower limit values. The
range of values that can be set for the upper and lower limits and the
default values depends on the measurement units in the currently
selected window - see Table 1-4.
The window based limits can also be set to output a TTL logic level at the
rear panel Rmt I/O port when the predefined limits are exceeded. You can
switch the rear panel TTL outputs on or off; set the TTL output level to
active high or low; and determine whether the TTL output represents an
over limit condition, under limit condition or both. Refer to Chapter 8
“OUTput Subsystem” for TTL output programming commands and to the
Agilent E4418B/E4419B User’s Guide for connector and pin-out
information.
Use the programming example for channel limits (page 1-54) as a guide to
programming window limits.
Checking for Limit Failures
There are two ways to check for limit failures:
1. Use the SENSe:LIMit:FAIL? and SENSe:LIMit:FCOunt?
commands for channel limits or the
Table 1-4: Range of Values for Window Limits
Window
Units
Max Min
Default
Max Min
dB +200 dB -180 dB 60 dB -120 dB
dBm +230 dBm -150 dBm 90 dBm -90 dBm
% 999.9 X% 100.0 a% 100.0 M% 100.0 p%
W 100.000 XW 1.000 aW 1.000 MW 1.000 pW
prog.book Page 55 Thursday, June 7, 2001 2:55 PM
- Programming Guide 1
- Legal Information 3
- Limitation of Warranty 4
- Exclusive Remedies 4
- Equipment Operation 5
- General Safety Considerations 6
- IEC 1010-1 Compliance 7
- Statement of Compliance 7
- User Environment 7
- Installation Instructions 7
- About this Guide 8
- List of Related Publications 10
- Table of Contents 11
- Table System... 1-45 12
- List of Figures 23
- List of Tables 25
- Introduction 28
- Interface Selection 29
- GP-IB Address 29
- RS232/RS422 Configuration 30
- Calibration 37
- Making Measurements 40
- Using MEASure? 41
- Using the CONFigure Command 46
- Using READ? 47
- Using INITiate and FETCh? 47
- Overview 56
- TABLE 20 57
- Making the Measurement 65
- TABLE 10 67
- Resolution 74
- Averaging 74
- Setting Offsets 77
- Setting Measurement Limits 79
- Setting Window Limits 81
- Checking for Limit Failures 81
- Measuring Pulsed Signals 84
- Triggering the Power Meter 87
- Idle State 89
- Initiate State 90
- Event Detection State 90
- Trigger Delay 91
- Trigger Mode 92
- Output Format 94
- Command Used 94
- 200 Readings/Sec 94
- Dual Channel Considerations 95
- How to Use Registers 100
- Power Meter Remote Operation 101
- Status Reporting 101
- Status Register 105
- Device Status Register 113
- Example Program 117
- Syntax Conventions 121
- SCPI Data Types 121
- Input Message Terminators 127
- Quick Reference 128
- MEASurement Commands 129
- CALCulate Subsystem 130
- CALibration Subsystem 131
- DISPlay Subsystem 131
- FORMat Subsystem 131
- MEMory Subsystem 132
- OUTPut Subsystem 132
- [SENSe] Subsystem 133
- STATus Subsystem 134
- SYSTem Subsystem 135
- TRIGger Subsystem 135
- UNIT Subsystem 136
- SERVice Subsystem 136
- SCPI Compliance Information 137
- SYSTem:RWLock 138
- TRANsmit:ECHO 138
- UNIT[1 138
- MEASurement Instructions 139
- CONFigure[1 145
- FETCh[1 159
- READ[1 173
- MEASure[1 187
- Figure 3-1: CALCulate Block 203
- CALCulate Block 203
- SENSe1 Block 203
- SENSe2 Block 203
- The CALCulate[1 204
- on the 205
- enabled 207
- disabled 207
- CALCulate[1 208
- CALCulate[1 213
- Error Message 218
- Conflict” occurs 218
- The CALCulate[1 221
- CALibration[1 231
- CALibration[1 234
- DISPlay[:WINDow[1 248
- Query Example 250
- MEMory:CATalog Node 267
- MEMory:CATalog[:ALL]? 268
- MEMory:CATalog:STATe? 270
- MEM :CAT :STAT ? 270
- MEMory:CATalog:TABLe? 271
- MEMory:CLEar Node 273
- MEMory:CLEar:TABLe 275
- MEM :CLE :TABL 275
- The MEMory:FREE Node 276
- MEMory:FREE[:ALL]? 277
- MEM :FREE :ALL 277
- MEMory:FREE:STATe? 278
- :FREE :STAT ? 278
- MEMory:FREE:TABLe? 279
- MEM :FREE :TABL 279
- MEMory:NSTates? 280
- MEM :NST 280
- The MEMory:STATe Node 281
- MEMory:STATe:CATalog? 282
- MEM :STAT :CAT 282
- MEMory:TABLe Node 285
- 80 Frequency 80 290
- OUTput Subsystem 295
- SENSe Subsystem 303
- Number of Averages 309
- • Auto-averaging is disabled 312
- CSET2) table 319
- B for channel B 329
- value is set but the 330
- [:INPut][:MAGNitude]? 333
- is not affected 333
- <numeric_value> 334
- or the values 336
- B for channel A 336
- “Hardware missing” occurs 359
- Device Status Register Sets 369
- Operation Register Sets 370
- STATus:PRESet 378
- Questionable Register Sets 379
- RO 396
- SYSTem:ERRor? 410
- SYStem:LOCal 412
- Command Setting Comments 413
- Setting Comments 414
- SYSTem:REMote 416
- SYST :REM 416
- SYSTem:VERSion? 419
- ABORt[1 423
- INITiate Node 424
- TRIGger Node 428
- IEEE488.2 Command Reference 453
- Universal Commands 455
- *SRE <NRf> 471
- TTL outputs 1-55 481
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