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CALCulate1 Subsystem
:CALCulate1:DATA?
Attribute Summary
Description
Use the CALCulate1 commands to query uncorrected
frequency-spectrum data. In NORMAL measurement
update mode, 15,047 values are returned. If the
Agilent 86121A is set for FAST measurement update
mode (low resolution), 7,525 values are returned.
The commands in this subsystem have the following
command hierarchy:
:CALCulate1
:DATA?
:TRANsform
:FREQuency
:POINts
Queries uncorrected frequency-spectrum data of the
input laser line.
Preset State: not affected
SCPI Compliance: standard
Query Only
The returned values are proportional to squared Watts
(linear) units. No amplitude or frequency correction is
applied to the values. To obtain the logarithmic (dB)
result, normalize the returned values by the largest
value, then take five times the logarithm of the normal-
ized values.
Be prepared to process a large amount of data when
this query is sent. The amount of data returned
depends on the measurement update state of the
instrument which can be set using the
:CALCulate1:TRANsform:FREQuency:POINts com-
mand or the resolution argument of an instrument func-
tion.
Refer to "Measurement Instructions" on page
When NORMAL measurement update is specified, over
250 kilobytes of data (15,047 values) can be returned to
the computer. When FAST measurement update is speci-
fied, over 125 kilobytes of data (7,525 values) can be
returned.
CALCulate1 Subsystem 5-17
5-11.
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