[evlatests] [Vlite-external] WIDAR P-band status update: 20APR2015

[Ken Sowinski]

On Thu, 23 Apr 2015, Bryan Butler wrote:

>
> while we can set the switching state from within scripts, it is not done in 
> the script that was used to take the data huib reported on.  that script is 
> at: /home/mchost/evla/scripts/test/4band/newer/TSUB0001_sb30399031_1.evla
>
> unless it is getting set incorrectly automatically by the executor, something 
> else is going on here.

The executor was never taught to deal with the new F318.  I have
just commited the cahgne which will remedy that.

Ken


> Eric Chavez wrote on 4/23/15 9:21 :
>>  That is correct Rob,
>>
>>  I attached a screen shot of the current state of the F318 Cals.
>>
>>  Commands for F318
>>
>>  0=cals off
>>  1=cals on
>>  3=cals on switching
>>
>>  We performed a F318 upgrade in Ant 14 yesterday. This was left in the
>>  "cals on switching" state, while all other cals are off.
>>
>>  So it looks like the low band set up scripts wrong.
>>
>>  Eric
>>
>>  On 4/22/2015 4:35 PM, Rob Selina wrote:
>> >  Hi Huib,
>> > 
>> >  Thanks for the report.
>> > 
>> >  The switched power issues appear to be associated with the F318
>> >  installations. When you ran the script, we had F318s installed in
>> >  EA03, EA05, EA06, EA11 and EA19 (EA20 is a separate issue).
>> > 
>> >  Looking at the device browser, the control points for the cal signals
>> >  appear to be turned off (FE_A_Calib_Cmd = 0 ...I think it should be
>> >  set to 3). We'll follow up to make sure this is set as part of the
>> >  default setup.
>> > 
>> >  Cheers,
>> > 
>> >  Rob
>> > 
>> > 
>> >  -----Original Message-----
>> >  From: Vlite-external [mailto:vlite-external-bounces at listmgr.nrao.edu]
>> >  On Behalf Of Huib Intema (NRAO)
>> >  Sent: Wednesday, April 22, 2015 4:16 PM
>> >  To: EVLA test; VLITE external
>> >  Subject: [Vlite-external] WIDAR P-band status update: 20APR2015
>> > 
>> >  Dear P-banders,
>> > 
>> >  Here is the outcome of a short VLA WIDAR P-band status test (few
>> >  minutes on 3C48) we ran on April 20. EA17 was out. Unfortunately,
>> >  several antennas have no switched power. And as usual, quite a few
>> >  have bandpass ripples.
>> > 
>> >  Major points of attention are:
>> > 
>> >  + EA13 no longer has low power nor erratic bandpass shape in YRH (thanks
>> >  for the fix!)
>> > 
>> > ~  EA05 no longer has fast bandpass ripple (fixed or transient?) ~ EA19
>> >  no longer has fast bandpass ripple on XLV and YRH (fixed or
>> >  transient?)
>> > 
>> >  - EA02 has 10 percent bandpass ripple on XLV and YRH (both 6.2 MHz =
>> >  24 m)
>> >  - EA03 has 20 percent bandpass ripple on XLV and YRH (both 3.1 MHz =
>> >  48 m)
>> >  - EA03 has no switched power
>> >  - EA04 has 20 percent bandpass ripple on XLV (20 MHz = 7.5 m)
>> >  - EA05 has no switched power
>> >  - EA06 has no switched power
>> >  - EA08 has 10 percent bandpass ripple on YRH (3.6 MHz = 42 m)
>> >  - EA11 has no switched power
>> >  - EA13 has 20 percent bandpass ripple on XLV (20 MHz = 7.5 m)
>> >  - EA14 has 40 percent bandpass ripple on XLV (20 MHz = 7.5 m)
>> >  - EA14 has 20 percent bandpass ripple on YRH (20 MHz = 7.5 m)
>> >  - EA15 has 13 percent power in the cross-polarizations
>> >  - EA19 has no switched power
>> >  - EA20 has 30 percent bandpass ripple on XLV (20 MHz = 7.5 m)
>> >  - EA20 has 13 percent power in the cross-polarizations
>> >  - EA20 switched power varies over time (factor of two)
>> >  - EA21 has 30 percent bandpass ripple on XLV (140 MHz = 1.1 m)
>> >  - EA21 has 50 percent power on XLV
>> >  - EA26 has deformatter problem on XLV (already reported to Vivek)
>> >  - EA28 has 10 percent bandpass ripple on XLP (3.6 MHz = 42 m)
>> > 
>> >  -- Huib
>> > 
>> > 
>> >  _______________________________________________
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>> >  Vlite-external at listmgr.nrao.edu
>> >  https://listmgr.nrao.edu/mailman/listinfo/vlite-external
>> > 
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>> 
>> 
>>
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