Agilent Technologies 4284A Service Manual page 121

4-1 3. AS VECTOR RATIO DETECTOR SERVICE SHEET
The A6 vector ratio detector board is covered by the exchange assembly program. The part
n u m ber of an A6 rebuilt exchange board is listed in Table 4-A6-1 .
Reference
HP Part
Designator
Number
AS
A6
0 4 2 8 4 · 665 0 6
0 4 284 · 69 5 0 6
These troubleshooting aids provide a list of jumpers and test pOints. The j umpers are listed
in Table 4-A6-2 , and the test pOints are listed in Table 4-A6-3 . The test point locations are
shown in Fig u re 4-A6-1 .
Reference
Description
Designator
A6J3 Phase Sensitive Detector
I nput Selection
A-D Converter I n put
A6J4
Selection
Table 4-A6-1 . 6 Replaceable Parts List
C
Qty.
D
5 1 V E C T O R R A T I O D E T E C T O R
V E C T OR R A T I O D E T E C T O R ( R E · BU I L T )
Table 4-A6-2. A6 Jumper List
4-A6-1
Description
Use
Normal Position:
Connects either EDUT or E R R Signals
to the phase sensitive detector.
Test Position:
Connects G N D to the input of the
phase sensitive detector.
Normal Position:
Connects the phase detected signal to
the A-D converter.
Test Position:
Connects the G N D to the input of the
A-D converter.
Mfr
Mfr Part Number
Code
0 4 2 84 - 66 5 06
0 4 2 84 - 69 5 0 6