How Measurements Are Calculated - HP E4418B Programming Manual

Power Meter Remote Operation

How Measurements are Calculated

How Measurements are Calculated

Figure 1-9 details how measurements are calculated. It shows the order in
which the various power meter functions are implemented in the
measurement calculation.
Sensor A Sensor A
SENSe1
A
:
: AVER1 GAIN1 :GAIN2 :
GAIN3
B
:AVER1 :GAIN1 :GAIN2 :GAIN3
SENSe2
Sensor B
Sensor B
The MEASure commands in this figure can be replaced with the FETCh?
and READ? commands.
Note
1-70
Figure 1-9: How Measurements are Calculated
Upper Measurement Window
Upper Measurement Window
CALCulate1
:MATH
"A" | "B"
:LIMit
"A-B" | "B-A"
"A/B" | "B/A"
Upper Measurement Window
"A/B" | "B/A"
"A-B" | "B-A"
:LIMit
"A" | "B"
:MATH
CALCulate2
Lower Measurement Window
All references to channel B in the above diagram refer to the
HP E4419B only. The MEAS[1|2]:POW:AC? and
MEAS[1|2]:POW:AC:REL? are the only commands relevant to the
HP E4418B.
UNIT1:POW
:REL
:GAIN
UNIT1:POW:RAT
UNIT2:POW:RAT
:REL
:GAIN
UNIT2:POW
HP E4418B/E4419B Programming Guide
MEAS1:POW:AC?
MEAS1:POW:AC:DIFF?
MEAS1:POW:AC:REL?
MEAS1:POW:AC:DIFF:REL?
MEAS1:POW:AC:RAT:REL?
MEAS1:POW:AC:RAT?
HPIB
HP-IB
MEAS2:POW:AC:RAT?
MEAS2:POW:AC:RAT:REL?
MEAS2:POW:AC:DIFF:REL?
MEAS2:POW:AC:REL?
MEAS2:POW:AC:DIFF?
MEAS2:POW:AC?