2 initiate and abort commands – Boonton 4530 Peak Power Meter User Manual User Manual

Page 79

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4-5

Boonton Electronics

Chapter 4

4530 Series RF Power Meter

Remote Operation

MEASure:VOLTage

Description:

Return average voltage using a default instrument configuration.

Syntax:

MEASure[1|2]:VOLTage?

Returns:

Average voltage in linear volts

Valid Modes:

Automatically sets to Modulated or CW voltage mode before measurement.

4.5.2 INITiate and ABORt Commands

The purpose of the INITiate group of commands is to start and control the process of data acquisition once a
measurement has been configured. Depending on settings, the power meter may be commanded to begin either a
single measurement

(INITiate:CONTinuous OFF

) which stops when complete, or enter a “free-run” mode where data

acquisition occurs continuously (

INITiate:CONTinuous ON

). The

ABORt

command terminates any operation in

progress and prepares the instrument for an INITiate command. In some operating modes, the INITiate commands do
not actually start measurements, but rather arm a hardware trigger, which is then used to gate the actual measurements
cycle.

INITiate:CONTinuous

Description:

Set or return the data acquisition mode for single or free-run measurements. If

INITiate:CONTinuous

is set to ON, the 4530 immediately begins taking measurements

(Modulated, CW and Statistical modes), or arms its trigger and takes a measurement each
time a trigger occurs (Pulse mode). If set to OFF, the measurement will begin (or be armed)
as soon as the INITiate command is issued, and will stop once the measurement criteria
(averaging, filtering or sample count) has been satisfied. Note that

INITiate:IMMediate

and

READ

commands are only valid when

INITiate:CONTinuous

is set to OFF.

Syntax

:

INITiate:CONTinuous <asc>

Argument:

<asc> = ON, OFF

Valid Modes:

Any

INITiate:IMMediate

Description:

Starts a single measurement cycle when

INITiate:CONTinuous

is set to OFF. In CW or

Modulated mode, the measurement will complete once the power has been integrated for
the full FILTer time. In Pulse mode, enough trace sweeps must be triggered to satisfy the
AVERaging setting. In Statistical mode, acquisition stops once the sample count reaches
the preset terminal count. In each case, no reading will be returned until the measurement
is complete. This command is not valid when

INITiate:CONTinuous

is ON.

Syntax:

INITiate[:IMMediate[:ALL]]

Argument:

None

Valid Modes:

Any

Restrictions:

INITiate:CONTinuous

must be OFF

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