Boonton 4530 Peak Power Meter User Manual - Manual (Page 139)

4-65
Boonton Electronics Chapter 4
4530 Series RF Power Meter Remote Operation
4.8.2 Modulated Mode Example - Signal in: 100 microsecond wide periodic pulse waveform, modulating a 1
GHz carrier. Peak sensor in use.
NOTE
When the trigger source is set to Bus or to Bus in combination with a signal source, the READ
command cannot be used. If it is, a trigger deadlock error code is generated. READ is a macro
command which is equivalent to the sequence
ABORt;INITiate;FETCh[:<function>]?.
a. Using the GPIB bus trigger to initiate a single averaged measurement:
CALC1:MODE modulated Set for modulated measurement mode
TRIG:SOURce bus Set trigger source for bus
ABORT Measurements STOP and triggers go to idle.
INIT:CONT off Set for single, triggered measurement
INIT:IMMEDIATE STOP with blank graph and empty readings
{send GET} or *TRG One random trace appears in graph mode
FETCH1:ARRAY:CW:POWER? Returns average, peak and minimum power readings.
{send GET} No effect; measurement is complete
b. To make successive measurements of average power in the Modulated mode, set TRIG:SOURce to IMMEDIATE
and INIT:CONT on . Then use the FETCH command as above to get readings. The bus trigger is not needed and will
be ignored if sent.
4.8.3 CW Mode Example - Signal in: 0dBm, 50MHz CW signal from internal calibrator. CW sensor in use.
NOTE
When the trigger source is set to Bus or to Bus in combination with a signal source, the READ
command cannot be used. If it is, a trigger deadlock error code is generated. READ is a macro
command which is equivalent to the sequence
ABORt;INITiate;FETCh[:<function>]? .
a. Using the GPIB bus trigger to make single complete measurements.
CALC1:MODE cw Set for CW measurement mode
TRIG:SOUR bus Set trigger source for bus
ABORT Measurements STOP and triggers go to idle.
INIT:CONT off Set for single, triggered measurement
while { more = 1} Loop for a series of complete measurements.
INIT:IMMEDIATE STOP with blank graph and empty readings
{send GET} or *TRG One random trace appears in graph mode
FETCH1:CW:POWER? Returns CW power reading. Sending GET again has no effect;
the measurement is complete.
{ end while }