Boonton 4530 Peak Power Meter User Manual Uživatelský manuál stáhnout pdf (Strana 140)

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Chapter 4 Boonton Electronics

Remote Operation 4530 Series RF Power Meter

b. Making successive 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.

{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.

(The bus trigger serves no purpose unless an ABORT command is issued to reset the trigger system and stop the

measurement. Otherwise, just set TRIGger:SOURce immediate and use FETCH to input readings on demand. )

4.8.4 Statistical Mode Example - (CDF, CCDF, DISTRIBUTION) - Signal in: CDMA signal at 0dBm average

power, at a 900MHz center frequency.

a. Start a CCDF measurement.

CALC1:MODE CCDF Set CCDF display mode.

TRIG:SOUR immediate Set for “immediate” start on trigger arming

ABORT Reset the trigger system.

INIT:CONT off Set for single, triggered measurement

INIT:IMMEDIATE Restart statistical processing.

FETCH1:AMEASURE:POWER? Return statistical reading array.

b. Using the bus trigger to start a CCDF measurement.

CALC1:MODE CCDF Set CCDF display mode

TRIG:SOUR bus Set trigger source for bus

ABORT Reset trigger system.

INIT:CONT off Set for single, triggered measurement

INIT:IMMEDIATE Reset measurement.

{send GET or *TRG} Start the measurement

FETCH1:AMEASURE:POWER? Return statistical reading array

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Boonton 4530 Peak Power Meter User Manual Uživatelský manuál Strana 140