7451A/7461A/7461P Digital Multimeter Operation Manual
5.9 Calculation Functions
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Memory recall
5.9
Calculation Functions
This instrument supports the following eight calculation functions.
Reads out the number of measurement results IRPO? Outputs the number of valid measurement results. Example of reply: IRPO01000
Reads out the data range IRNO?
Outputs the range of valid data.
Example of pre-trigger = 25%:
IRNO-250, 749
Readout range setting IRD
Only current range of valid data can be set.
In pre-trigger = 25%:
IRD-250, 749 OK
In pre-trigger = 75%:
IRD-250, 749 NG
Reads out data IRO?
Outputs the data in the range set by IRD command.
If this command is executed before the trigger is detected, an error occurs.
Item
Function
NULL calculation
Subtracts a fixed value from a measurement value.
Smoothing calculation
Calculates the moving average.
Scaling calculation
Calculates (
)
C.
dB calculation
Calculates 20 log
10
(
).
dBm calculation
Calculates 10 log
10
(
).
Comparator calculation
Performs a comparative calculation (HI/GO/LO).
MAX/MIN calculation
Calculates the maximum, minimum and average values.
Statistical calculation
Calculates the maximum value, minimum value, average value,
standard deviation, and dispersion.
M-B
A
M
D
M
2
D
1
10
-3
