Boonton 4530 Peak Power Meter User Manual Instrukcja Użytkownika Pobierz pdf (Strona 137)

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Boonton Electronics Chapter 4

4530 Series RF Power Meter Remote Operation

4.8 SCPI EXAMPLE PROGRAM FRAGMENTS.

4.8.1 Pulse Mode Example - Signal in: 100 microsecond wide periodic pulse waveform, modulating a 1 GHz

carrier. Peak sensor in use, trigger level is valid and results in synchronized trace when viewed in GRAPH mode.

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 measurement:

CALC1:MODE pulse Set for pulse 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} One random trace appears in graph mode

FETCH1:ARRAY:MARKER:POWER? Returns marker-related power reading array.

{send GET} No effect; measurement is complete.

b. Using the GPIB bus trigger to initiate successive measurements:

CALC1:MODE pulse Set for pulse measurement mode

SENS1:AVER 1 Make each measurement display independent.. For > 1, succes-

sive triggered traces will be averaged.

TRIG:SOUR bus Set trigger source for bus

ABORT Measurements STOP and triggers go to idle.

INIT:CONT on Continuous measurements subject to signal trigger conditions.

(INIT:IMMEDIATE) CAN’T USE since INIT:CONT is ON -- Error condition!

{send GET} One random trace appears in graph mode.

FETCH1:ARRAY:MARKER:POWER? Returns marker-related power reading array.

{send GET} New measurement cycle for each trigger.

c. Use an internal signal trigger to initiate a single measurements:

CALC1:MODE pulse Set for pulse measurement mode

TRIG:SOUR sensor1 Set trigger source for sensor1 input signal

ABORT Measurements STOP and triggers go to idle.

INIT:CONT off Set for single, triggered measurement

INIT:IMMEDIATE Single measurement trace.

FETCH1:ARRAY:MARKER:POWER? Returns marker-related power reading array. Repeat

INIT:IMMEDIATE for each additional measurement cycle.

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Boonton 4530 Peak Power Meter User Manual Instrukcja Użytkownika Strona 137