Power Meter Remote Operation
Making Measurements
1-12
EPM-P Series Power Meters Programming Guide
Example 6 - Making a Ratio Measurement
The following command can only be carried out on the E4417A. It queries
the upper window to make a ratio measurement of channel A/B. The
expected power and resolution parameters are defaulted, leaving them at
their current settings.
Note
E4417A only.
The operation of the
MEASure?
command when the source list parameter
is defaulted depends on the current setup of the window concerned (for
example, A, B, A/B, A-B etc.) and on the particular command used (for
example,
MEAS[:POW][:AC]?
and
MEAS:POW:AC:RAT?
).
This means that when the source list parameter is defaulted, there are a
number of possibilities.
Command
Current Window Setup
Measurement
MEAS1[:POW][AC]?
Upper Window: A
A
B
B
Any Other
A
MEAS2[:POW][AC]?
Lower Window: A
A
B
B
Any Other
B
MEAS1:POW:AC:RAT
Upper Window: A/B
A/B
B/A
B/A
Any Other
A/B
MEAS1:POW:AC:RAT? DEF,DEF,(@1),(@2)
specifies window
specifies the relationship of the
channels in the ratio
Channel A / B
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