Keysight Technologies E4417A Service Manual page 25

Power
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2
Performance Tests
When switching the range calibrator to STANDBY, allow enough time for the
NOTE
range calibrator to settle to its zero value before attempting to zero the power
meter. This settling would appear on the power meter display as downward drift.
When the drift has reached minimum, (typically less than 60 seconds), the range
calibrator is settled.
6 Set the filter length:
7 Zero the power meter:
8 Wait 30 seconds then verify that the power meter's reading is within ±0.05 μW.
Table 2-1
Zero Test Results
Min
–76.40 nW
30
– Press
Channel
.
– Highlight the Filter parameter using the up/down arrow keys.
– Scroll through the Filter values by pressing
MAN.
– Highlight the filter length using the forward arrow key. Press
Filter Length pop-up window is displayed. Set the filter length to 512.
– Press
Enter
.
Zero
Press
,
. Wait approximately 10 seconds for the wait symbol to
Zero
Cal
disappear.
Record the reading.
Channel A Actual Resul ts
_________________
Channel B Actual Resul ts
(E4417A Only)
_________________
Keysight E4416A/E4417A Power Meters Service Guide
. Select a value of
Change
Change
Max
+76.40 nW
. The

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