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lbaops:lbajan2007:v190fholog

The log from experiment v190f has been copied to:

ftp.atnf.csiro.au:/pub/people/vlbi/incoming/

ANTAB and UVFLG files have been copied to the same place.

Additional experiment notes:

Data:

Ho1/1-7 shipped to Steven Tingay, Swinburne using Australian airExpress con note 01921606 on Jan 30/2007

Setup information:

Agilent 4.0 GHz

Rx fixed LO 5.2 GHz

Sky center freq 1.666 GHz

9 dB attenuation

Phase shift trombone 181 steps out from the inner limit

Rx 2. XYZ posn = 259, -260, 18

IF to control room 576 MHz

LCP is 40 dB stronger than RCP at 1666 MHz when injecting in to tone port (LCP).

LCP is being recorded.

Control room LOs:

702 for IF1

670 for IF2

Coherence check tones used (MHz 2nd harmonic):

819.5, 827.5, 835.5, 843.5

Observer: Jamie McCallum, Jamie Stevens.

Comments follow:

2007.027.00:55:50.29;“CAL heights derived from scans on 3C348. Scans were affected by noticable interference spikes.

2007.027.00:58:00.32;”3/4 overcast, thick low cloud. Light winds.

2007.027.02:44:17.52;“System coherent

2007.027.02:46:46.86;”DAS levels are running high. wth

2007.027.02:47:03.58;“Not out of limits.

2007.027.02:48:19.29;” A series of showers has passed, sky overhead is clear. Windy.

2007.027.05:00:52.56;“System coherent

2007.027.05:03:57.16;”Weather is changeable - scattered clouds, moderate winds with occasional showeres.

2007.027.06:27:34.18;“DAS levels are varying considerably. Interference?

2007.027.08:02:12.83;”DAS levels have steadied.

2007.027.08:02:34.96;“System coherent

2007.027.08:03:23.75;”Measured system temperatures seem unreliable, probably due to interference.

2007.027.08:04:38.35;“Weather is 7/8 overcast and windy. Occasional showers.

2007.027.11:42:51.40;”System coherent

2007.027.11:44:44.65;“Momentarily stopped the recorder in cDisko, trying to stop the vc017 disk-cleaner. Restarted immediately.

2007.027.11:48:04.85;”Missed one scan v190_Ho_027_114400.lba

2007.027.14:00:34.93;“Now recording to xraid0_1

2007.027.14:01:51.84;”System coherent

2007.027.14:03:48.29;“Weather is cool, lightwinds and mostly clear.

2007.027.17:33:13.96;”System coherent

2007.027.17:34:55.44;“Weather is cool, light winds and 25% thin scattered overcast.

2007.027.21:17:15.55;”System coherent

2007.027.21:20:39.76;““Weather is warm, 1/2 thick cloud moving in and calm.

2007.027.23:35:19.55;”Weather is warm, calm and 50% cloud cover.

2007.027.23:37:44.35;”System coherent

2007.028.00:25:20.78;“Jamie S taking over for Jamie M

2007.028.00:25:41.08;”LBA DAS monitor program just crashed, have brought it back up

2007.028.00:25:59.62;“again with VSOP_HO.PRO, but have not issued setup, just using for

2007.028.00:26:03.24;”monitoring

2007.028.00:26:30.84;“DAS power levels still good, but IF1 power levels had dipped

2007.028.00:26:41.28;”just before the crash, causing an alarm

Regards,

Brett.

lbaops/lbajan2007/v190fholog.txt · Last modified: 2015/12/18 16:38 (external edit)