Measurement Commands
Measurement Commands
2-2
EPM-P Series Power Meters Programming Guide
Measurement Commands
Measurement commands are high level commands used to acquire data.
They enable you to trade interchangeability against fine control of the
measurement process.
The
CONFigure
,
FETCh?
,
READ?
and
MEASure?
commands all have a
numeric suffix which refers to a specific window/measurement. For
example:
•
CONFigure1?
: Returns the configuration of the upper
window/upper measurement.
•
CONFigure2?
: Returns the configuration of the lower
window/upper measurement.
•
CONFigure3?
: Returns the configuration of the upper
window/lower measurement.
•
CONFigure4?
: Returns the configuration of the lower
window/lower measurement.
Measurement
Command
Description
MEASure?
Provides the simplest way to program a power meter for
measurements.
MEASure?
is a compound command which is
equivalent to an
ABORT
followed by a
CONFigure
and a
READ?
. It does not enable much flexibility or control over
measurement settings.
CONFigure
Used to change the power meter’s configuration values.
CONFigure
must then be followed by another command which
takes the measurement—for example, a
READ?
followed by a
FETCh?
.
READ?
Takes a measurement using parameters previously set up
using either CONFigure or lower level commands.
READ?
is
equivalent to an
ABORt
followed by an
INITiate
1
(which
performs the data acquisition) and a
FETCh?
FETCh?
Retrieves measurements taken by
INITiate
1
.
1.
INITiate
is described in chapter 13, Trigger Subsystem.
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