Functional description
18 100,000 cts digital multimeters
1. Description of the “SETUP” menu (continued)
1. Measurement
Configuration of the
measurement
parameters
Filter: 300 MHz MLI filter for measure on variator
Impedance: choice of desired input impedance
Choice between 10 and 20 M
only in 100mVDC and 1000mVDC
As default, 10mV range = 10M
,
1,000mV range = 10M
dBm REF: adjustment of the reference in dBm
Adjustment of the reference resistance (dBm
REF) between 1 and
10000, for measurements in dBm from voltage
VAC or VAC+DC
- Selection of a digit by the navigation
key and modification of the digit
- Validation of the reference resistance
in dBm and exit from the menu by "Ok".
Default value 600
.
Reminder: a measurement of 0dBm with a
reference resistance of 600
is
made using a voltage of 0.7746 VAC.
W Ref: resistive power reference W
Adjustment of the reference resistance ()
between 1 and 10,000, for resistive power
measurements:
The calculation performed is:
(measured voltage)
2
/W Ref (unit W)
(measured current)
2
/W Ref (unit W)
Same adjustment as for the reference resistance
in dBm.
Default value 50
.
W REF is used for the calculation of the
resistive power (W) with
REF = W Ref and the calculation of the
power
(V A) with V (Ref) = W Ref
To calculate VxA, see §. MEAS+.
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