Differences

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--- feedathon-daily-june-21-2018 [2018/06/22 18:23] – jrseti
+++ feedathon-daily-june-21-2018 [2023/10/28 18:36] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 ====Accomplishments====
-  - Sytem configuration refined and working as diagramed. See the NSG Configuration diagram below.
+  - System configuration refined and working as diagramed. See the NSG Configuration diagram below.
   - 16 feed pols hooked up to the RF switched. Verified the switch is working.
   - 200MHz filter from all the RFCB outputs removed. Now have 600MHz coming out out the RFCB
@@ Line 11: / Line 11: @@
   - Two SNAPS hooked up and working. Running through system tests now.
   - Figured out where to measure and debug the Feeds and signal chain. See the Signal Measurements Diagram below.
-  - A test run of the SNAP all night, all feeds hooked up to the RF switch 1GHz to 10BHz, source: 3c295.
+  - A test run of the SNAP all night, all feeds hooked up to the RF switch 1GHz to 10BHz, source: 3c295. Turns out the results were not that great because the signal levels in some cases were too strong for the SNAP. Jack and JonR are working to compensate.
   - Spectrum Analyzer testing. The 9kHz->3G scope could see Casa@1420, but could NOT see w3oh@6667. The other 2 scopes could see w3oh clearly.
+  - On the SA we were able to clearly see an 8MHz comb from 1 to 2GHz. We will be investigating. See pic below.
 {{ :nsg-configuration-v1.2.png?800 |}}
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 We were able to see the 8MHz comb on the new feeds from 1 to 2 GHz. We will be investigating...
 {{ :8mhz-comb-1hx-1.4g-june-21-2018.jpg?600 |}}
+Lots of action in the SPR, not much room:
+{{ :spr-working2-june-21-2018.jpg?600 |}}
+{{ :spr-working1-june-21-2018.jpg?600 |}}