7351 Series Digital Multimeter Operation Manual
5.9 Calculation Functions
5-17
5.9
Calculation Functions
This instrument supports the following eight calculation functions.
Figure 5-4 Calculation System Diagram
NOTE:
1.
The following results may be obtained from calculating the data. This is because the internal resolutions of mea-
surement values and setting values for the calculation are higher than the resolutions of the displayed data and
remote output data.
• If the buzzer is set to ON in the MAX/MIN calculation, the buzzer sounds when the MAX or MIN value is
renewed. However the buzzer may sound even when the display and remote output data are not changed.
2.
If the calculation is set to ON, the display of the calculation result is different from the ordinary measurement
values and the decimal point and unit do not depend on the current measurement range.
<Example>
DC voltage measurement, measurement range: 2000 mV, input voltage: 1 V
Measurement value:1000.00 mV
Calculation Result:1.00000 V
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
dB
dBm
Measurement
data
Calculation
Results
Number of data
Maximum value
Minimum value
Average value
NULL
Smoothing
Scaling
Comparator
MAX/MIN
Data memory
Statistics
Number of data
Maximum value
Minimum value
Average value
Standard deviation
Dispersion
