Performance Tests
Instrument Accuracy Test
2-12 Agilent E4418B/E4419B Service Guide
Procedure
The following procedure should be performed for the Instrument Accuracy
Test.
Note 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.
WARNING 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.
5. Press then .
6. Press , for a reading in watts.
7. Press on the power meter, and set the value
to 4.
8. Set the range calibrator as follows:
• RANGE: 100 mW
• POLARITY: NORMAL
•FUNCTION: STANDBY
• REF SWITCH: EXT
•LINE: OFF
Local
Confirm
W
Setup
Resolutio
4402serv.book Page 12 Tuesday, October 14, 2003 3:18 PM
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