Table of contents
- 1. Details
- 2. Test Setup
- 3. Results
Details
Purpose of the test was to investigate a drop in amplitude of the last 4 BBCs of board C in the PV DBBC3 system. This drop has been seen during the GMVA fringe tests f191a and f192a.
Test Setup
The 4-8GHz noise source was connected to all 4 IF inputs of the DBBC3. The DDC_V 124 was loaded and all 32 BBCs were tuned to the same frequency. A test recording was done.
Prior to the recording the system was checked by the monitorDDC.py script: PPS and samplers were in an OK state.
Results
The amplitude drop could be reproduced in the test
| board | ||
|---|---|---|
| A | ||
| B | ||
| C | ||
| D |
