Program Examples CMU
1100.4903.12 7.4 E-4
ECHO ON
FPRINT ............................................................................
FPRINT INITIALISATION ROUTINE:
FPRINT ASK FOR THE IDENTIFIER OF THE CMU, RESET THE INSTRUMENT,
FPRINT DEFINE THE SECONDARY ADDRESSES FOR ALL AVAILABLE FUNCTION GROUPS
FPRINT ............................................................................
CMUBASE: *IDN? Identification query
CMUBASE: *RST;*OPC? Reset the instrument; prevent the following command
to be executed before *RST is complete
CMUBASE: *CLS Clear output buffer, set status byte
CMUBASE: SYST:REM:ADDR:SEC 1,"RF_NSig" Define function group RF Non Signalling; the CMU Base
system is always assigned secondary address 0
FPRINT .............................................................................
FPRINT CONNECTORS
FPRINT .............................................................................
CMURF: INP:STAT RF2 Define input connector RF2
CMURF: OUTP:STAT RF2 Define output connector RF2
FPRINT .............................................................................
FPRINT RF GENERATOR SETTINGS
FPRINT .............................................................................
CMURF: SOUR:RFG:FREQ 900 MHZ Set RF generator frequency
CMURF: SOUR:RFG:MOD SSB Switch on frequency offset (single side band modulation)
CMURF: SOUR:RFG:MOD:SSB:FREQ 67.7 KHZ Set offset frequency
CMURF: INIT:RFG;*OPC? Switch on RF generator
FPRINT .............................................................................
FPRINT SPECTRUM ANALYZER SETTINGS
FPRINT REFERENCE LEVEL ONLY EXISTS IN THE MANUAL MODE (Defines display area)
FPRINT .............................................................................
CMURF: SENS:SPEC:FREQ:CENT 900 MHZ Set center frequency for spectrum measurement
CMURF: SENS:SPEC:FREQ:SPAN 500 KHZ Set frequency span
CMURF: SENS:SPEC:FREQ:BAND 20 KHZ Set resolution bandwidth of the spectrum analyzer
CMURF: CONF:SPEC:CONT:REP SING,NONE,NONE Single shot measurement, no stop on error
FPRINT .............................................................................
FPRINT SPECTRUM MEASUREMENT AT 900 MHZ + OFFSET 67.7 KHZ, 1 POINT
FPRINT .............................................................................
CMURF: CONF:ARR:SPEC:RANG 900.0677 MHZ,1 Select single measurement point at 900.0677 MHz
CMURF: READ:ARR:SPEC? Start single shot spectrum 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: CONF:ARR:SPEC:RANG 900 MHZ,1 Select single measurement point
CMURF: READ:ARR:SPEC? Start single shot spectrum 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: CONF:ARR:SPEC:RANG 899.9323 MHZ,1 Select single measurement point
CMURF: READ:ARR:SPEC? Start single shot spectrum measurement, wait until it is
terminated, and return result (1 value)
FPRINT .............................................................................
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