GDM-8261 User Manual
56
Select reference
resistance
To change the reference resistance,
press the Up/Down key. The new
resistance appears in the 2nd display.
The following is the resistance list.
2 4 8 16 50 75 93
110 124 125 135 150 250 300
500 600 800 900 1000 1200 8000
Deactivate dBm
measurement
To cancel the dBm measurement,
press the Shift key followed by the
key, or simply activate another
measurement.
/
dBm
Measure dB
Background
dB is defined as [dBmdBmref]. When the dB
measurement is activated, the GDM-8261 calculates the
dBm using the reading at the first moment and stores it
as dBmref.
Activate dB
Press the Shift key followed by the
Hz/P key. The 1st display shows dB,
and the 2nd display shows the
current Voltage reading.
Hz/P
dB
dB result appears
dB Indicates dB measurement
-00.617mV Indicates the present Voltage reading
dBmref
Press the 2nd key to see the dBm
ref value.
2ND
Deactivate dB
measurement
To cancel the dB measurement,
press the Shift key followed by the
Hz/P key, or simply activate another
measurement.
Hz/P
dB
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