2
General Power Meter Functions
32
N1913/1914A EPM Series Power Meters User’s Guide
Setting the Units of Measurement
The
Units
menu is used to select the measurement units for the currently
selected window. These can either be logarithmic (dBm or dB) or linear
(Watt or %) units. Presetting (
) the power meter sets the
measurement units to dBm (logarithmic units).
show units that are applicable to each measurement mode.
Press
,
. Select the unit of measurement from
,
,
,
and
. Softkeys which cannot be selected in your particular mode of
operation are grayed out.
Table 2-1
Measurement units - Single channel meters
Table 2-2
Measurement units - Dual channel meters
Units
dBm
W
dB
%
N O T E
When the measurement unit is set to Watt (W), it is possible that negative power results
are displayed when measuring low power levels.
Measurement Mode
Relative Mode Off
Relative Mode On
Log
dBm
dB
Linear
Watt
%
Measurement Mode
Relative Mode Off
Relative Mode On
Ratio
Log
dB
dB
Linear
%
%
Difference
Log
dBm
dB
Linear
Watt
%