Boonton 4530 Peak Power Meter User Manual Manuel d'utilisateur télécharger pdf (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 }

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 169 170

Pas de commentaire

Boonton 4530 Peak Power Meter User Manual Manuel d'utilisateur Page 139