Setting The Units Of Measurement; Table 2-5 Measurement Units - Agilent Technologies E4419B User Manual

2 Power Meter Operation

Setting the Units of Measurement

The "dBm/W" menu is used to select the measurement units on the currently
selected window. These can either be logarithmic (dBm or dB) or linear (Watt
or %) units.
Table 2-5
modes.
Press
Softkeys which cannot be selected in your particular mode of operation
appear with their text grayed out.
When the unit of measurement is set to Watt, it is possible that negative power
N O T E
measurements may be displayed when measuring low power levels.

Table 2-5 Measurement Units

62
shows which units are applicable to the individual measurement
, then select the unit of measurement from
Measurement Mode
Single Channel
Ratio
Difference
1 When relative mode is on (that is,
compared to a reference value.
sets the measurement units to dBm (logarithmic units).
Relative Mode Off
Linear Log
Watt dBm
% dB
Watt dBm
,
Rel Off On
, ,
dBm W dB
1
Relative Mode On
Linear Log
% dB
% dB
% dB
is "On")
, the measurement is
E4419B Power Meter User's Guide
, or .
%