The fieldsystem and rdbe at AO
12oct21
Intro:
An Overview: using the 12m,fs,and rdbe
at AO..
- equipment used
- software to prepare and run the experiment
- looking at the data online
- An experiment example
- rdbe fdds mixer values for various frequency ranges
Documentation
sched,fieldsystem,rdbe, and
mark6 documentation
- sched program
- rdbe
- mark5c recorder
- mark6 recorder
- vdif
- field system
History
- 22oct21: cables from AO if/lo now go directly
to the rdbe inputs (bypass the old tape
distribution amps). The cables were also swapped. AO polA
(left rack) now goes to first IF input of rdbe . This is rcp
(according to the patriot feed documentation). The splitter
that was used so send each pol to rdbe2,rdbe4 was
changed.Old splitter went to 1Ghz. new splitter goes to2.5
Ghz.
Measurements
211011 -
test data: xband, IF cfr 8550, tone 8552, 2 chan, 16Mhz bw, 60
secs of data on blank sky.
211015 -
test data: xband, IF cfr:8550, tone 8620, 4 chan: 8600a,b,
8616 a,b , 60 secs on blank sky
211018 -
test data: xband, IF cfr:8550, tone 8543, used both
rdbe's: 8x16Mhz channels:8532,8548,8564,8580.
211019:
check 2 bit quantization levels.
211022:
test data: xband IF cfr 8386, tone 8386, 8x64 Mhz global vlbi
mode.
211105:
evn fringe test
12meter page
home_~phil