A6 Vector Ratio Detector Service Sheet - Agilent Technologies 4284A Service Manual

4-13. A6 VECTOR RATIO DETECTOR SERVICE SHEET

The A6 vector ratio detector board is covered by the exchange assembly program. T h e part
number of an A6 rebuilt exchange board is listed in Table 4-A6-1.
Reference
HP Part
Designator
Number
A6
A6
0 4 2 8 4 - 6 6 5 0 6
0 4 2 8 4 - 6 9 5 0 6
These troubleshooting aids provide a list of jumpers and test points. T h e jumpers are listed
in Table 4-A6-2, and the test points are listed in Table 4-A6-3. T h e test point locations are
shown in Figure 4-A6-1.
Reference
Description
Designator
A6J3 Phase Sensitive Detector
Input Selection
A-D Converter Input
A6J4
Selection
Table 4-A6-1. 6 Replaceable Parts List
C
Qty.
D
5 1
VECTOR R AT I O DETECTOR
VECTOR R AT I O DETECTOR ( R E - B U I LT )
Table 4-A6-2. A6 Jumper List
4-A6-1
Description
Use
Normal Position:
Connects either EDUT or ERR signals
to the phase sensitive detector.
Test Position:
Connects GND t o t h e i n p u t o f t h e
phase sensitive detector.
Normal Position:
Connects the phase detected signal to
the A-D converter.
Test Position:
Connects the GND to the input of the
A-D converter.
Mfr
Mfr Part Number
Code
28480 0 4 2 8 4 - 6 6 5 0 6
28480 0 4 2 8 4 - 6 9 5 0 6
CD
Cy,
CD
CD
V5