wapp correlators
20apr,2005
calcontrol
Measurements
Documentation
History
Cal control:
- The cal multiplexor port 3 is for the wapp control of the cal ttl
input signal.
- The ttl signal comes from the program caltrig running on aeroncpu
(it does not come from the wapps).
- The source codes is at:
/home/cima/Wapp/Software/Dual/Sources/Utilities/caltrig.c
- It is the parallel port server for aeroncpu.
- The program writes it's log to /share/cima/Logs/Cal/
cal.log and caltrig.log
Measurements
14sep10: jumps in beam5b power
(attenutors?).
08mar07:
bad cable wapp 4 brd 1 polB (alfa 6B) causes gain jumps.
06feb07:
wapp start times for pulsare differ on the 4 wapps.. how pulsar
datatking
is started.
06apr06:
ntp time jumps on the wapps 2003-2006. where they come from.
19apr05:
wapp clock drifts when taking data.
19apr05:
ntp time server drifts when wapps take data.
Documentation:
Bill sisk's documentation
HISTORY:
- 07mar07: wapp4 brd1 b (alfa6b) had a bad cable from digitizer up
to the
filter boards. It was replaced on 07mar07. It
had
been bad since at least the beginning of feb07.The total power we jump
by a few percent.
- 05apr06: wapp4 disc failed. rebuilt.
- 03apr06: disabled cron.daily cpu intensive jobs (slocate, etc)
from
running
at 4am every day.
- 15jul05: wapp1-3 have their kernel upgraded 2.4.15? to 2.4.31.
- 09jun05: wapp4 has its kernel upgraded 2.4.15? to 2.4.31.
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