13 TRACe Subsystem
632 N1911A/1912A P-Series Power Meters Programming Guide
TRACe[1]|2:MEASurement:REFerence? <numeric_value>
This command is used to find the reference power level. This provides the
reference power level to calculate the pulse parameters.
Commonly used reference levels are 0 %, 10 %, 50 %, 90 %, and 100 %. You can
set the reference level to measure overshoot at 125 % and undershoot at –25 %.
Algorithm
P
x%
= P
0%
+ x/100 (P
100%
- P
0%
)
where:
– 0 % <= x <= 100 %
–P
0%
= level of low state
–P
100%
= level of high state
–P
0%
, P
100%
and P
x%
are all in the same unit of measurement, for example,
Watts.
Syntax
Reset Condition
On reset, this parameter is not affected.
Example
TRAC
:MEAS
1
2
:REF
?
numeric_value
TRAC2:MEAS:REF? 100 This command returns the high state
power for trace 2.
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