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blog:fringe_test_experiment_12_may_2010 [2010/05/12 00:10]
Jim Lovell created
blog:fringe_test_experiment_12_may_2010 [2011/10/26 06:37] (current)
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 +====== Fringe test experiment 12 May 2010 (day 132) ======
 +Fringe test with Tsukuba and Kokee, starting at 00:00 UT and running for 2h.
 +
 +== Setup ==
 +RF unit showing cross-over switches both in "​Direct"​ mode. Commenced observations recording nominal RCP. 
 +
 +12m signals going to DBBC/Mark5B and MarkIV-rack/​Mark5A simultaneously. IF setup was as follows:
 +
 +  * Unordered List ItemS-band IFs: input from 12m to DBBC and MarkIV
 +  * X-band lower 4 : input from 12m to DBBC and MarkIV
 +  * X-band upper 4 : 12m through DBBC, 26m through MarkIV
 +
 +DBBC was loaded with new firmware from Gino shortly before the experiment. Dave Graham'​s DBBC [[hardware:​dbbc|setup procedure]] was followed.
 +
 +== Observations ==
 +  * Started on time at 00:00 UT
 +  * Polarisations were swapped to nominal LCP on the 12m half-way through. Swap occurred between 00:59:10 and 01:02:23 UT
 +  * Formatter (H-maser) leads GPS by 15.3822 microsec at 2010.132.01:​50:​39.01
 +  * The Formatter time difference in the log is for the Mark5A data. 
 +  * The Mark5B data uses a different maser for its time source. The clkoff for this maser was essentially constant throughout the experiment at a value of 15.33 microseconds.
 +
 +
 +{{tag>​Hobart test}}
 +
 +
 +~~DISCUSSION~~
  
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