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Performance Tests
Zero Test
Procedure
The following procedure should be performed for the Zero Test.
Note
Note
-76.40 nW
2-6
The procedure details the key presses required on the
Agilent E4418B. For the Agilent E4419B the equivalent key
presses should be performed on both channels.
1. Connect the equipment as shown in Figure 2-1.
2. Switch the power meter on.
Preset
3. Press
then
Local
dBm/W
4. Press
,
for a reading in watts.
W
5. Set the range calibrator as follows:
RANGE............................................ 3 µW
POLARITY ...................................... NORMAL
FUNCTION..................................... STANDBY
LINE ................................................ ON
When switching the range calibrator to STANDBY, allow enough
time for the 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. On the power meter press
,
Filter Filter On Mode Man Length
length to 512 in the pop up window then press
7. On the power meter press
seconds for the wait symbol to disappear.
8. Wait 30 seconds then verify that the power meter's reading is
within ±0.05 µW. Record the reading.
Table 2-2: Zero Test Results
Channel A
Min
Actual Result
________________
.
Confirm
System
,
Input Settings
Inputs
,
,
Zero
,
. Wait approximately 10
Zero
Cal
Channel B
Actual Result
(Agilent E4419B
Only)
________________
Agilent E4418B/E4419B Service Guide
,
,
More
, and set the filter
Enter
.
Max
+76.40 nW
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