IHOP02: Site 7 Messages, 27 Entries..

This entry was made post-project from information in my paper logbook.

Arrived 15:03
Primary concern was the GOES interference.
GOES DCP 120 inside Eve box. Shielded both Tsurf and Kr cables with foil.
Comparison of Kr signal prior and post shielding indicated that shielding helped
Dirt clod taken from near NW leg of Rad stand

06/25/02  17:15 - 18:00 Local

Purpose: Final Trime Soil Measurement.
	SDR 'Shield-Off' Test begun
	Removed solar panels

SDR Test: See also entry #265 for more.
	Turned off station, removed rf shielding, downloaded
	previous sdr data to panasonic.
	17:42 began new test, sdr #5, st7_0625.off

Trime measurements
ISFF	26.2(33), 26.0(33), 26.1(33), 26.0(33)
P10	34.6(37), 34.6(37), 34.6(37), 34.5(37)

TRH Note: was bad while we were here, perhaps before because we
	didn't check it before shutting down EVE to begins the	
	new SDR test.   It apparently came back correctly later.

06/23/02 11:45-13:40 Local

Purpose: No GOES messages coming in.

The station was actually up and running OK.

GOES:	Another power plug problem!
	The power plug was slightly ajar.
	It seems that the shield on this cable
	stiffened it enough so that opening
	the door caused it to disconnect even though
	it appears as if it was still in the front-
	panel socket.

SDR:	The error LED was flashing indicating the recorder failed.
	(This unit has been a problem child.)
	Removed microDrive #2 files copied covering ~24 hours for 6/21.
	(see entry #265 for more)

	Replaced button battery so date/time/etc. will stay put.
	Moved unit to 'pin-jack' method so it can be used without
	power cycling EVE.
	Swapped code to version 7.3.
	Installed microDrive #5 and restarted, but...

	NOTE: The drive is making noise continuously so it'll
	probably die.  This older version of the sdr board/code
	leaves the drive running so it's more vulnerable to problems.
	Need to make the upgrade to the newest version.

RAD Cleaned ~17:10z
Move_metppf done

Went to station 7 to get the SDR communication cable.
Also cleaned Krypton.
I apparently did something wrong because the station went down.
Will fix today!

  I went by station 7 to check on the SDR system to see if the changes
made yesterday worked. Based on the filenames and sizes, everything looks
good. Below are the filenames and size
filename	created		size (bytes)
06202151.00Z	00:51:12	12045610
06202152.00Z	08:51:16	12060324
06202153.00Z	16:27:12	11090682
06202154.00Z	16:27:12	322033

The last file was created after I stopped data collection to examine
the filenames.

  At 7 the flashcard in the SDR was removed and replaced with another
larger capacity card. The configuration parameters of the SDR were 
checked and the filename was changed to a more representative name.
  There were not mice or nest in the rain gauge.

Note About SDR files:
	They were once again short files.
 ls -l /mnt/pccard
-rwxr-xr-x    1 pam      rtf             0 Jan  1  2011 041912ao.00z
-rwxr-xr-x    1 pam      rtf             0 Jun 20 16:35 06180000.00z
-rwxr-xr-x    1 pam      rtf         60535 Jun 20 16:46 06180001.00z
	However Steve checked the configuration of the SDR-OEM
	and it was ok.  Perhaps that unit has a problem, or else
	the media (in this case one of the 192mB compact flash cards)
	was bad.
	The files were stored in,
	/aster_data/aster/projects/IHOP02/raw_data/sdr/s07

Went to station 7 to get the fast data. The 340 flash was
replaced with a 196 flash. We will need to change the 196
in a few days.
  I also cleaned the domes and the krypton.

[The primary reason for this visit is to install an SDR at this site to allow
the possibility of recovering low water vapor flux signals from the raw data.]

[It also was a clear morning, preceding a MCS storm later in the afternoon, so
we finished our series of shading tests at s7-9.]

Arrived 10:00

copy metppf.166 /card
remove 10Mb card from EVE
move_metppf
insert 20Mb card in EVE with new stn7 config.dat (fastout)
power off EVE
install SDR board and cabling with microdrive #2
10:10 EVE on again
delete config.dat, kryton.dat, reboot EVE

10:15 Cleaned Kr
10:18 Cleaned radiometers

10:20 - 10:30 Sun Shadow tests captured to s7l.020615

removed microdrive; copied 400K file to Panasonic; reinserted

Depart 10:38

Arrived 16:11

A series of tests were carried out to determine and reduce Kr signal noise 
The fast data was acquired for later analysis (logged as s7.020610):

- Battery pack ( 1.61v ) to AMP-9 - Good ~ 8035
- Battery pack to serial A/D - Good ~ 16065
- Kr 1394 installed (head in zip-log bag); wired directly to A/D (lots of 
  GOES noise)
17:00 disconnected the grey cable from Kr box and reconnected using 
      red cable (better shielding?)
17:05 removed plastic bag covering Kr head
- connected via front panel
Turned off station and re-did GOES shielding (twisted wires vs. clip leads to
  ground, shielded GOES transmitter power as well). Noise now ~80, 

A crudely-annotated plot of the above data is attached.

Conclusion: most of the "noise" seen on this station was still GOES 
interference.  I've significantly reduced it, but it is still present.

Time will tell if 1394 behaves better at this station than its former location
at s9.  It checks out okay in the lab (13mA, 1.7V in dry air -- even
better than 1392 that just came back from Campbell) and I've just replaced
the 4-pin connector which had a small amount of white corrosion.  Nevertheless,
I don't have much confidence that the connector change will fix the low-noise
problem.

Changed station configuration to use kry1394s.dat calibration file.

Departed 17:38

Arrived 14:12

Set GOES transmission time.

Exchanged serializer and examined noise:
Didn't have a working CSAT-1 serializer in the spare box :(, also the A/D
from the one CSAT-1 spare didn't work with the CSAT-1 CPU in the box.
Thus, changed to a configuration with the old CSAT-1 CPU and the A/D from
the UW-1 that we removed from s9 yesterday.  The reference voltages were
nearly the same -- the CPU is -88 and the A/D is -86.  I left it this way.
I used "fastsave" to examine the data, expecting a good result to be a large
reduction in h2o'h2o'.

h2o	w'h2o'	h2o'h2o'
17.82	0.029	0.145		before changes; obviously bad
17.91	0.023	0.199		"
18.24	0.023	0.028		change to -86 A/D; (short fastsave)
18.02	0.012	0.264		" (normal length fastsave)
18.03	-0.001	0.336		"; reseated all connectors on EVE and also 
				changed to spare Krypton signal cable

Obviously, none of these changes improved matters.  I went back to the normal
cabling, though I left the -86 A/D board in place.

The only thing I can think of next is to work on the front panel itself!

Removed Kr 1393 for transport to station 8 for tests

Depart 15:21

[A series of visits to isolate problem with krypton fluxes;
back to s7 to install s8's krypton]
Arrive: 1745
- installed kypton 1393 box and head
Depart: 1757

NOTE: Didn't change calibration files -- station is still using 1391 
calibrations (but good enough for these tests?)

[A series of visits to isolate problem with krypton fluxes;
s7 visit to remove krypton; also change CR10 power; also calibrate PIR]
Arrive: 1311
- clean radiometers; start shading tests, though scattered clouds, 2x 60s each
  captured to s7l.020608
- removed krypton 1391 at 1320
- moved GOES antenna back from SE to SW tripod leg (where we had put it during
  the GOES interference tests a while ago)
- CR10 power to standalone battery
- copied /card
Depart: 1340

[This typed in 6 Jun for stuff done 5 Jun since I was too soggy yesterday.]

Peggy Lemone and Fei Chen visited yesterday.  I took them to sites 7,9,8 while
I rehung krypton electronics (which were cleaned up and had new 6-pin connectors
installed in the trailer) in plastic boxes and downloaded /card.  All of these
were serviced by climbing -- the towers were not dropped.

It was raining during all of these visits, so all kryptons were wet.  All 
krypton signals were only ~30mV -- hopefully they will recover.

I intended to do the logger power rewiring at s7 and s9, but forgot to bring
power cables :(

Approximate times were:
s7: 1340-1420 (drove in -- Peggy walked)
s9: 1530-1600 (started to drive in, got stuck in the mud!)
s8: 1630-1700 (walked in) had error downloading /card; DID NOT GRAB SDR

Arrived in heavy rain at 14:40.
Drove only to gate. Steve ran to station, climbed up and removed Kr electronics
Departed at 15:00

We did several things at site 7.  Our primary reason for the visit was to see
if the glitch in the analog channels seen in the high-rate data at s8 also
occurred at non-supersites.  Using "sbusdebug" to watch Tsfc voltages, it was
obvious that the glitch does occur here.  The counts = 0.1mV changed by ~250
when the GOES transmitter was on.  I captured a bit of this on the Panasonic
using minicom (this file is now in $PAM/projects/IHOP02/captures/s7.020529).  
We further found out
by attaching the dummy RF load that this problem disappears.  Thus, it is an
RF interference problem.  We moved the antenna from the SW to E leg of the
tripod, but this didn't appear to work.  (Note that we left it in this position
which is rather close to the sonic.)  During the process, I rebooted a few
times and even powered-off the station once.  Note that the /card data should
recover much of the data while the GOES was off.

We left the station with GOES back running and the antenna near the sonic.

During all of this, an EVE error started appearing: "Illegal Address, 21 ticks".
Since all of the data channels appeared to be working, we ignored this.

Also, it seemed to me that the CR10x data didn't get started after one of the
reboots, so I used "lineon 2"; "lineoff 2" to get it going again.  I'm assuming
that this really wasn't necessary.

Replaced TRH206 w/ TRH003.  TRH206 blew the Sbus fuse.  It is a 2 amp
fuse, but none was available, so I replaced it with a 3 amp fuse.
Downloaded local storage.

Opened KH2O electronics and was corroded again.  Cleaned internal
power connector terminals and applied Seal & Peel to internal
connectors.  Cleaned KH2O windows.

Visited site 7, 1220-1505 CDT, May 28

Replaced TRH206 w/ TRH003.  TRH206 blew the Sbus fuse.  It is a 2 amp
fuse, but none was available, so I replaced it with a 3 amp fuse.
Downloaded local storage.

Opened KH2O electronics and was corroded again.  Cleaned internal
power connector terminals and applied Seal & Peel to internal
connectors.  Cleaned KH2O windows.

Tightened terminal screws in Campbell data logger enclosure.

TWH extracted the following from Josh Uebelherr and Joseph Alfieri
email recieved 5/25/02

8) Site 7: 5/16/02
Arrival: 1550
Departure: 1705
Conditions: heavy overcast, light NE winds, light 'sprinkle of rain for
about ten minutes at 1705

-Radiometers cleaned at 1700, some dust on domes prior to cleaning

-Gravimetric soil core taken at 1654

-Cuttings of the representative species to be used for porometry were
taken for identification purposes.

TWH extracted the following from Josh Uebelherr and Joseph Alfieri
email recieved 5/25/02

5) Site 7: 5/15/02
Arrival: mid-afternoon
Departure: mid-afternoon

-No maintenance or measurements performed, only visited site for survey
with David Yates to discuss surface characterization and sampling method

Tom visted site 8 1455 - 1515 CDT, May 21

Took site photographs.  First took two pictures of site from SE, then
two consecutive series of photos from next to the tripod at 45 degree 
azimuth intervals, starting from North and proceeding clockwise 
through E,S,W,N.

Replaced EVE prom EVE 4/21/02 6047 with IHOP02 5/14 0xA7BA

Tom cleaned the windows on the kh2o sensor head and opened the 
electronics box to clean the internal connectors on the bulkhead 
power connector.  The latter were corroded.  Used Peel and Seal to
seal the electronics box.

Tom visted site 7 2:45 - 4:45 pm CDT, May 19.

Cleaned the kh2o head and the power connector inside the electonics 
box, reset the GOES clock, and downloaded the local data storage.

Replaced EVE prom EVE 4/21/02 6047 with IHOP02 5/14 0xA7BA

Measured multiplexer and CR10 supply voltages: 14.0 V

Checked logger coefficients at Site 7.  
They were as listed in logbook entry 20.

Site 7 was completed yesterday.
Sonic serial number: 539
Sonic Height: 2.7 m
Sonic Direction: 92 degrees
Krypton serial number: ????
Tsfc serial number: 3577-6
TRH serial number: 206
Prop serial number: 00318
Prop direction: 175 degrees
Radiation height: 2.2 m
Profile box: 10

NOTE: No krypton has been setup here yet.

Coefficients downloaded to the
CR10x logger at station 7:


Q7-97035	NET(A+)	00	9.26
x	A-	01	11.52
E-29137	PYGIN	02	246.9135802
NA	PYGOUT	03	0
E-26235	PSPIN	04	111.7318436
NA	PSPOUT	05	0
H-983212	x	06	38.4
PAR-Q9125	x	07	.238563277
Pin-Tcase	A0	10	-35.3986664
x	A1	11	71.5120618
x	A2	12	-28.527393
x	A3	13	7.5105057
x	A4	14	.5295503
Pin-Tdome	A0	15	-35.671396
x	A1	16	71.415322
x	A2	17	-28.56534
x	A3	18	7.592893
x	A4	19	.499873
Pout-Tcase	A0	20	0
x	A1	21	0
x	A2	22	0
x	A3	23	0
x	A4	24	0
Pout-Tdome	A0	25	0
x	A1	26	0
x	A2	27	0
x	A3	28	0
x	A4	29	0
TS-NCAR001	A0	30	-240.18024
x	A1	31	228.29406
x	A2	32	10.24176
MS-010	A0	45	-.187
x	A1	46	.037
x	A2	47	.335
E-29137	x	51	246.9135802
NA	x	52	0
E-26235	x	53	111.7318436
NA	x	54	0
Pin-Tcase	A0	55	-35.3986664
x	A1	56	71.5120618
x	A2	57	-28.527393
x	A3	58	7.5105057
x	A4	59	.5295503
Pin-Tdome	A0	60	-35.671396
x	A1	61	71.415322
x	A2	62	-28.56534
x	A3	63	7.592893
x	A4	64	.499873
Pout-Tcase	A0	65	0
x	A1	66	0
x	A2	67	0
x	A3	68	0
x	A4	69	0
Pout-Tdome	A0	70	0
x	A1	71	0
x	A2	72	0
x	A3	73	0
x	A4	74	0
ACTIVE	x	99	0

Post IHOP coefficients downloaded from cr10x

00:+9.2600
01:+11.520
02:+246.91
03:+0.0000
04:+111.73
05:+0.0000
06:+38.400
07:+.23856
10:-35.399
11:+71.512
12:-28.527
13:+7.5105
14:+.52955
15:-35.671
16:+71.415
17:-28.565
18:+7.5929
19:+.49987
20:+0.0000
21:+0.0000
22:+0.0000
23:+0.0000
24:+0.0000
25:+0.0000
26:+0.0000
27:+0.0000
28:+0.0000
29:+0.0000
30:-240.18
31:+228.29
32:+10.242
45:-.18700
46:+.03700
47:+.33500
51:+246.91
52:+0.0000
53:+111.73
54:+0.0000
55:+0.0000
56:+1.0000
57:+0.0000
58:+0.0000
59:+0.0000
60:+0.0000
61:+1.0000
62:+0.0000
63:+0.0000
64:+0.0000
65:+0.0000
66:+0.0000
67:+0.0000
68:+0.0000
69:+0.0000
70:+0.0000
71:+0.0000
72:+0.0000
73:+0.0000
74:+0.0000
99:+0.0000