4-14
IM DM7560-02EN
4.4 Calculation function
4.4.4
dB calculation
*This cannot be set with Section 4.4.3 Scaling (SCALING / dB) calculation simultaneously.
Calculation
Selection of dBV, dBm
dBm
Calculation result = 10·log
10
{ ( measurements)
2
/ ( standard
resistance) / (1.0×10
-3
) }
Standard resistance value
Unit Ω
Selection from 4, 8, 16, 32, 50, 75, 93, 110, 124, 125, 135, 150,
200, 250,300, 500, 600, 800, 900, 1000, 1200, 8000
dBV
Calculation result = 20 · log
10
( | measurements | /standard voltage)
Standard voltage value Selection from unit V, 1μV, 1mV, 1V
REL calculation
Is possible to set by above 2 calculations.
Display of different value deducted dB standard value from
calculation result.
dB standard value
It is possible to set by three kinds (DEFAULT value,
measurements,and a numeric input).
Setting range
The range of a numeric input is ±500.0000. (Seven significant digits)
Appropriate function
Valid only for DCV, ACV function
4.4.5
STATISTIC calculation
Calculation
Calculates maximum value (MAX), minimum value (MIN), average
value (AVE) and standard deviation (σ).
ON/OFF
Setting by menu
Display
Is possible to display on secondary display.
The mean value cursor and the σ cursor are displayed in the
histogram chart.
4.4.6
Limit calculation
Judgment
All function
ON/OFF
The Upper limit and the lower limit value can be enabled or disabled
individually.
Limit value
The upper limit and the lower limit values are set in seven
significant digits with eight kinds of multiplier (p,n,μ,m,k,M,G,T).
HIGH
Measurement value > the upper limit value
LOW
Measurement value < the lower limit value
GO
When either or both HIGH judgment and LOW judgment is ON
- - -
State that is neither HIGH nor LOW.
Setting range
Seven significant digits
With eight kinds of multiplier (p,n,μ,m,k,M,G,T)
Display
Trend chart
Displays HIGH/LOW threshold line in graphics.
Histogram chart
Displays HIGH/LOW marks and threshold line in graphics.
LIMIT judgment
Displays HIGH/GO/LOW on upper part of screen, primary display
and secondary display.
