CMU Program Examples
1100.4903.12 7.5 E-4
CMURF: ABOR:SPEC Abort spectrum measurement and free resources
FPRINT .............................................................................
FPRINT PRODUCE A RAMPED SIGNAL
FPRINT .............................................................................
CMURF: SOUR:RFG:PULS:STAT ON;*OPC? Select pulsed signal (as opposed to CW)
FPRINT .............................................................................
FPRINT CONFIGURE THE POWER/T MEASUREMENT
FPRINT .............................................................................
CMURF: SENS:POW:FREQ:CENT 900.0677 MHZ Set center frequency for power vs. time measurement
CMURF: SENS:POW:FREQ:BAND 20 KHZ Set resolution bandwidth of the RF analyzer
CMURF: SENS:POW:TIME:SPAN 1MS Set evaluation time of power measurement
CMURF: TRIG:SOUR IFP Trigger meas. by IF signal level (recommended)
CMURF: LEV:MAX –10 Set expected maximum input level
CMURF: CONF:ARR:POW:RANG 3E-4,1 Select single measurement point at 0.3 ms
CMURF: CONF:POW:CONT:REP SING,NONE,NONE Single shot measurement, no stop on error
CMURF: SYST:ERR? Read error queue
CMURF: INIT:POW Initiate power vs. time measurement
CMURF: READ:ARR:POW? Start single shot measurement, wait until it is
terminated, and return result (1 value)
FPRINT .............................................................................
FPRINT HAVE A LOOK AT SPECIFIC OFFSETS (SUPPRESSED CARRIER AT 900 MHZ)
FPRINT .............................................................................
CMURF: SENS:POW:FREQ:CENT 900 MHZ Set center frequency for power vs. time measurement
CMURF: READ:ARR:POW? Start single shot measurement, wait until it is
terminated, and return result (1 value)
FPRINT .............................................................................
FPRINT HAVE A LOOK AT SPECIFIC OFFSETS (THE OTHER SIDEBAND 900 MHZ - 67.7 KHZ)
FPRINT .............................................................................
CMURF: SENS:POW:FREQ:CENT 899.9323 MHZ Set center frequency for power vs. time measurement
CMURF: READ:ARR:POW? Start single shot measurement, wait until it is
terminated, and return result (1 value)
SETLOCAL Quit remote control mode
Symbolic Status Event Register Evaluation
The following example program shows how the EVENt part of the STATus:OPERation registers can
be read using the commands for symbolic status register evaluation typed in boldface. The program
provokes and evaluates the event Reference Frequency Not Locked (RFNL) which is reported by bit
no. 6 of the STATus:OPERation:CMU:SUM1:CMU1 sub-register assigned to the CMU base system
(see sections Symbolic Status Event Register Evaluation and STATus:OPERation Register in chapter
5).
CMUBASE: *RST;*OPC? Reset the instrument; prevent the following command
from being executed before *RST is complete
CMUBASE: *CLS Clear output buffer, set status byte
CMUBASE: CONF:SYNC:FREQ:REF:MODE?
CMUBASE: CONF:SYNC:FREQ:REF:MODE EXT Provoke event -> Reference Frequency Not Locked
(external reference frequency selected but no
external input signal available)
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