HP EPM E4418A, Руководство пользователя

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HP4402.book : chapter2.fm 25 Tue Apr 22 15:20:23 1997
Power Meter Operation
Setting Offsets
HP EPM-441A User’s Guide 2-25
2. The power meter displays the offset value in a pop up window.
Modify this offset (see below) as desired.
■
Use or to modify the digit on which the cursor is
currently positioned.
■
Use or to move to other digits.
3. To confirm your choice press .
4. is automatically set to “
On
” when a value is
entered using .
Display offsets can be disabled and re-enabled simply by pressing
.
The display offset is a function of the window. That is, if you have selected
a two window display each can have its own offset.
Figure 2-3 displays the effects of the channel and display offsets on the
power meter’s displayed reading.
Figure 2-3: Effect of Offsets on a Channel Measurement
† Channel Offset entered using
,
, ,
.
†† Display Offset entered using
, .
dB
Offset Off On
Offset
Offset Off On
Ch Input with
Ch Input
Ch
Offset
†
Display
Offset
††
READING
ON POWER
METER
DISPLAY
Ch Input with Ch Offset and
Ch Offset
Display Offset
System
Inputs
Input Settings More
Offset
Rel
Offset
Offset