Setting The Units Of Measurement; Measurement Units - HP E4419B User Manual

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.
(logarithmic units). Table 2-5 shows which units are applicable to the
individual measurement modes.
Press
. Softkeys which cannot be selected in your particular mode of operation
%
appear with their text grayed out.
Note
Single Channel
Ratio
Difference
1. When relative mode is on (that is,
measurement is compared to a reference value.
HP E4419B User's Guide
dBm/W
, then select the unit of measurement from
When the unit of measurement is set to Watt, it is possible that
negative power measurements may be displayed when measuring
low power levels.
Table 2-5: Measurement Units
Measurement
Mode
Watt
%
Watt
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Setting the Units of Measurement
Preset
sets the measurement units to dBm
Local
Relative Mode Off
Linear Log
dBm
dB
dBm
Rel
,
Rel Off On
Offset
Power Meter Operation
dBm W , , dB or
1
Relative Mode On
Linear Log
% dB
% dB
% dB
is "On")
, the
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