Keysight Technologies 3458A Guide D'utilisation page 295

operation
parameter
OFF
CONT
CTHRM
DB
DBM
FILTER
FTHRM
NULL
PERC
PFAIL
RMS
SCALE
STAT
CTHRM2K
CTHRM10K
Keysight 3458A User's Guide
Numeric
Description
Equiv.
0 Disables all post-process math operations
Enables the previous math operation. To resume two math
1
operations, send MMATH CONT,CONT
Result = temperature (Celsius) of a 5 kW thermistor (40653B).
3
Function must be OHM or OHMF (10 kW range or higher).
Result = 20 x log
4
initialized to 1, yielding dBV.
Result = 10 x log
5
be ACV, DCV, or ACDCV.
Result = output of exponentially weighted digital low-pass filter.
6
Response is set by DEGREE register.
Result = temperature (Fahrenheit) of a 5 kW thermistor (40653B).
8
Function must be OHM or OHMF (10 kW) range or higher).
Result = reading-OFFSET register. The OFFSET register is set to
9
first reading—after that you can change it.
10 Result = ((reading - PERC register) / PERC register) x 100.
11 Reading vs. MAX and MIN registers.
Result = squares reading, applies FILTER operation, takes square
12
root.
13 Result = (reading-OFFSET register) / SCALE register.
Performs statistical calculations on the present set of readings
and stores results in these registers:
SDEV = standard deviation
14 MEAN = average of readings
NSAMP = number of readings
UPPER = largest reading
LOWER = smallest reading
Result = temperature (Celsius) of a 2 kW thermistor (40653A).
16
Function must be OHM or OHMF.
Result = temperature (Celsius) of a 10 kW thermistor (40653C).
17
Function must be OHM or OHMF.
Command Reference
(reading/REF register). The REF register is
10
2
(reading /RES register/1 mW). Function must
10
6
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