TREX: sonic Messages: 12 Entries..

Poulos, Militzer, West visit 1600 Local 17 Apr 

We shot boom angles with the new Theodolite.Shots were taken from the road west of the tower at ~ 50 m distance. The original records for the table below are noted in Poulos' green record notebook.

Sonic   Solar    Solar  Solar    Solar       Actual    Resulting   Corrected
Height  time of  Elev   Azim      Azim       Azim      Boom angle  Boom angle
        Record   stor   stor    stor d m     Meas'd    Meas        (cardinal)
------  ------   -----  ------  ----------  ---------- ----------  ----------
05 m     1730    67.15  266.38  254d 46.8m  266d 30.5m  92d 21.2m   92d 13.7m
10 m     1715    64.15  264.02  271d 49.8m  264d 13m    91d 11.2m   91d  0.2m
15 m     1655    60.19  260.74  254d 46.8m  260d 40m    90d 26.5m   90d 31m
20 m     1615    52.38  253.54  267d 19.2m  253d 47.5m  91d 48.5m   91d 33m
25 m     1655    60.19  260.74  254d 46.8m  260d 40m    90d 26.5m   90d 31m
30 m     1615    52.38  253.54  267d 19.2m  253  47.5m  91d 48.5m   91d 33m

Poulos and Militzer shot boom angles with the new Theodolite. The leveling bubble was noted as slightly misaligned but tolerably so. John will pursue adjustment tomorrow. Shots were taken from the road west of the tower at ~ 60 m distance. Leveling was completed using a method of dual confirmation of boom parallel siting, theodolite leveling and predicted and actual sun targeting reading. The original records for the table below are noted in Poulos' green record notebook.

Sonic   Solar    Solar  Solar    Solar      Actual    Resulting   Corrected
Height  time of  Elev   Azim      Azim      Azim      Boom angle  Boom angle
        Record   stor   stor    stor d m    Meas'd    Meas        (cardinal)
------  ------   -----  ------  ----------  --------  ----------  ----------
05 m     1625    54.75  254.78  254d 46.8m  255d 05m   91d 11m    90d 52.8m
10 m     1810    75.57  271.83  271d 49.8m  272d 00m   90d 02m    89d 49.8m
15 m     1625    54.75  254.78  254d 46.8m  255d 05m   91d 11m    90d 52.8m
20 m     1740    69.56  267.32  267d 19.2m  267m 37m   91d 37m    91d 19.2m
25 m     1625    54.75  254.78  254d 46.8m  255d 05m   91d 11m    90d 52.8m
30 m     1740    69.56  267.32  267d 19.2m  267m 37m   91d 37m    91d 19.2m

Cable for 2m sonic at central failed when the hotfilm system
was being re-installed. The 2m sonic is now only connected to
daisy.

13Apr06, ~10:30PDT

Installed 2 'cross' guy wires to 5m tower to try to help stablizing the oscillations in the wind.

NOTE: this may have effected the sonic levels as the cables were tightened.

Restarted 25 m sonic with rserial -h /dev/ttyS10 central.
Then & T Ae D & (?)

The 3 hotfilm sonics are now going through nids central. This was done
by extending the sonic cables to each the nids box. Whenever the hot film
is active these sonics need to be reconnected to Daisy.

In order to collect the 1,2,3 m sonic data when the hot-films are not running,
we are cabling them to the viper data system.

I have saved ads3.xml as ds3.xml.old and modified ads3.xml with the
following additional code:

           
            
            
            
            
            
            
            
            

With the serializer swap to CSAT 1117 mentioned earlier, we had a sonic that
could go to 30m.s.  We have just installed it.  That means, for the first time
for TREX, all standard sensors finally are working!  (Only 5 days and 1 1/4
IOPs late.)

Naturally, the network has started being flakey just to spite us.  My guess
is that the wind is moving the antennae around (though the TPOP looks quite
stable at the base).  The usb drives seem to be working through this.  I've
just played around with TPOP channels.  Gordon had left it as channel 11, but
I'm now running on 8 (after trying 2,3, and 5).

Since our now 2 spare sonics consisted of a dead sonic with a serializer and
a good sonic without a serializer (and we need a serializer still at 30m.s),
We just pulled the serializer out of 672 and installed it in 1117.  Note that
this breaks the sequence that sonics with S/N <700 had serializers and newer
ones didn't.  Someone will have to make a decision later as to whether to 
swap this serializer back.

After all the swapping, here is the latest list.  [Note that 20m.c was 671, not
674 as in Chris's notes.]

		Central		South		West
30		671		1119		540
25		1123		674?		1120
20		855		1122		0800
15		856		1124		539
10		832		1121		536
5		538		537		677

"Spare" [waiting to be used with the hot-film system]
672 [has serializer, but reports 8000 on all data channels
1117 [works, but no serializer]

Now all but South 30m has a serializer, as originally intended.  We will try
to put 672's serializer in 1117.

Today consisted of relocating sonics/sonic boxes to put them in the correct positions.  The west site is completed with sonics containing serializers at 5m and 30m.  Central is completed with the exception of the 30m sonic.  We are still troubleshooting as to the data we are receiving from 30m.  We were unable to complete central due to winds.  South needs both serialized sonics mounted possibly tomorrow, pending weather conditions.  

The central site crashed again overnight last night so the morning was spent debugging the issue.  The base computer was not recognizing the DHCP and we were having issues with the USB drive.  We are still uncertain as to the problem of the central site going offline at night but the USB seems to be functioning properly at this time.

The logger cable for the NW radiometer at the central site was also repaired this morning.

Shot boom angles today, though the theodolite base wouldn't turn much -- had
to do a VERY coarse adjustment rotating the entire theodolite head.

Fortunately, much of the tower looked the same:

30m	93 deg 13'
25m	92 deg 35'
20m	92 deg 35'
15m	92 deg 35'
10m	92 deg 35'
5m	85 deg 21' [separate tower]