Procedure - Agilent Technologies 4418B Service Manual

Power meter
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Performance Tests
Instrument Accuracy Test

Procedure

The following procedure should be performed for the Instrument Accuracy
Test.
Note
WARNING
2-12
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 2-3.
2. Unplug the range calibrator's power cord. Due to a ground loop
design problem with the 11683A option H01 range calibrator, it
will not operate properly unless ground loops are eliminated. The
instrument will continue to operate with no power applied, and
disconnecting the power cord eliminates the problem.
There is a small risk of mild electrical shock from the
chassis of the 11683A option H01 range calibrator unless
the power meter is connected.
3. Figure 2-3 shows the HI/LO outputs of the DC calibrator
connected to the DC reference input of the range calibrator.
Ensure that the Guard and LO output of the DC calibrator are
floating, and are not connected to the earth ground.
4. Switch the power meter on.
Preset
5. Press
then
Local
dBm/W
6. Press
,
for a reading in watts.
W
Meas
7. Press
on the power meter, and set the
Setup
to 4.
8. Set the range calibrator as follows:
RANGE: 100 mW
POLARITY: NORMAL
FUNCTION: STANDBY
REF SWITCH: EXT
LINE: OFF
.
Confirm
Agilent E4418B/E4419B Service Guide
value
Resolution

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