ADVANCED MEASUREMENT
91
dB is, specifically, defined as [dBm−dBmref]. When the
dB measurement is activated, the GDM-9060/9061
calculates the dBm using the reading at the first moment
and stores it as dBmref.
Press the Shift + Math key to
activate Math setting menu as the
following figure shown.
Further press the F1 (Function) key
to enter the Math Function menu as
the figure shown below.
Press F2 (dB) key to enable the dB
function. The screen, after activation,
will appear as figure below.
Measured
dB Value
Indicator dB On
F3 (REF Ω) to
select reference
resistance
To change the reference resistance,
press the F3 (REF Ω) key to enter the
setting menu. Scroll the Knob key or
press Number keys to enter the
desired value of reference resistance.
Push the F6 (Enter) key or the
Knob key (Enter) to confirm the
input reference resistance.
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