Session Notes for CONT14 campaign: c1412
Prepared by D. Behrend, NVI, Inc./GSFC
Refer to http://ivscc.gsfc.nasa.gov/program/cont14/
for general information.
This set of notes consists of two parts:
1) Individual day notes
2) General CONT14 notes (repeated for all CONT14 days)
*** Individual day notes ***
===========================================================
----- Parameter listing --------------------------------------
Experiment: C1412 Description CONT14 DAY 12
Scheduler: NASA Correlator: BONN
Start: 2014-137-00:02:28 End: 2014-138-00:00:00
Current yyyyddd: 2014137 (2014.38) ( 16795 MJD, SAT. 17MAY.)
Greenwich sidereal time: 15:40: 0.00 ( 0: 2:28 UT)
Sun's RA and DEC: 3h 34.9m 19d 15.7
===========================================================
First observations
Observation listing from file ./c1412.skd for experiment C1412
Source Start DURATIONS
name yyddd-hhmmss Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc
0059+581 14137-000228| 20 189 23 145 65 165 20 189 83 142 25|
0637-752 14137-000248| 90 21 195 122 195 |
0016+731 14137-000424| 20 20 20 20|
4C39.25 14137-000452| 20 20 20 |
0537-441 14137-000622| 20 20 20 20 |
End of listing.
===========================================================
Last observations
Observation listing from file ./c1412.skd for experiment C1412
Source Start DURATIONS
name yyddd-hhmmss Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc
0607-157 14137-234809| 32 20 53 53 |
...
1124-186 14137-235107| 20 20 |
2145+067 14137-235226| 25 20 23 25 |
1611+343 14137-235232| 20 20|
0749+540 14137-235240| 28 54 32 61 52 61 |
4C39.25 14137-235347| 20 20 20 |
0955+476 14137-235530| 32 38 36 30 38 20|
End of listing.
===========================================================
SKED Summary from file ./c1412.skd for experiment C1412
(all scans with at least one subnet station)
Average number of obs. per baseline per source(normalized by up-time) = 7.1
Min = 0.0 Max = 80.0 (Baseline Ft-Ts on 0017+200) RMS = 9.5
Total time: 1434 minutes ( 23.9 hours).
Key: Bd=BADARY Ft=FORTLEZA Hb=HOBART12 Ho=HOBART26 Ht=HART15M
Ke=KATH12M Kk=KOKEE Ma=MATERA Ny=NYALES20 On=ONSALA60
Ts=TSUKUB32 Wf=WESTFORD Ww=WARK12M Wz=WETTZELL Yg=YARRA12M
Ys=YEBES40M Zc=ZELENCHK
Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc Avg
% obs. time: 16 32 33 13 24 40 31 33 29 38 17 31 36 23 40 24 15 28
% cal. time: 5 4 5 6 5 5 6 5 5 5 7 5 4 6 5 5 5 5
% slew time: 57 42 15 63 23 15 31 31 25 29 27 21 13 15 14 39 56 31
% idle time: 21 21 45 17 47 39 32 30 39 27 48 41 46 56 40 31 23 36
total # scans: 453 344 462 481 426 449 509 430 469 415 591 473 375 484 422 467 450 452
# scans/hour : 19 14 19 20 18 19 21 18 20 17 25 20 16 20 18 20 19 19
Avg scan (sec): 31 79 62 23 49 76 52 66 54 79 25 57 84 41 82 45 28 54
# data tracks: 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32
# Mk5 tracks: 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32
Total TBytes: 1.0 2.0 2.1 0.8 1.5 2.5 1.9 2.0 1.8 2.4 1.1 1.9 2.3 1.4 2.5 1.5 0.9 1.7
Total TB(M5): 0.9 1.7 1.8 0.7 1.3 2.2 1.7 1.8 1.6 2.1 0.9 1.7 2.0 1.3 2.2 1.3 0.8 1.5
# OF OBSERVATIONS BY BASELINE
| Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc Total
-----------------------------------------------------------------------------------------------
Bd| 92 37 40 110 65 176 240 293 250 306 224 37 269 52 246 288 2725
Ft| 1 1 175 0 73 186 156 172 46 229 4 189 1 208 140 1673
Hb| 410 78 284 113 12 11 5 119 9 278 9 261 3 19 1649
Ho| 83 290 118 9 12 5 142 8 282 8 269 0 17 1694
Ht| 95 0 163 106 132 83 108 38 162 133 168 162 1796
Ke| 111 39 39 34 176 22 200 42 323 29 50 1799
Kk| 130 217 172 330 231 144 159 67 139 117 2297
Ma| 309 341 184 270 1 371 31 367 323 2976
Ny| 345 256 340 15 356 27 333 276 3091
On| 202 298 2 369 20 340 279 2966
Ts| 205 131 209 129 189 197 2904
Wf| 26 314 1 315 221 2821
Ww| 1 151 0 4 1314
Wz| 28 400 317 3203
Yg| 20 47 1560
Ys| 308 3065
Zc| 2765
Number of 2-station scans: 448
Number of 3-station scans: 326
Number of 4-station scans: 214
Number of 5-station scans: 159
Number of 6-station scans: 104
Number of 7-station scans: 89
Number of 8-station scans: 68
Number of 9-station scans: 94
Number of 10-station scans: 114
Number of 11-station scans: 34
Number of 12-station scans: 2
Number of 13-station scans: 0
Number of 14-station scans: 0
Number of 15-station scans: 0
Number of 16-station scans: 0
Number of 17-station scans: 0
Total number of scans: 1652
Total number of obs: 20149
Total integrated obs-time: 837956
Average obs-time: 41.6
Histogram of observation durations
Dur: 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300#Obs: |11756| 2702| 1655| 1331| 797| 662| 416| 279| 183| 134| 94| 55| 30| 19| 10| 16| 4| 1| 5Average X-band SNRs by baseline
| Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc AVG
----------------------------------------------------------------------------------------------
Bd| 36 55 89 67 71 58 79 108 70 196 60 41 106 48 173 172 109
Ft| 35 27 34 - 24 35 33 32 36 34 40 39 38 82 43 41
Hb| 64 34 42 32 39 38 38 69 34 36 45 32 66 49 46
Ho| 52 60 49 43 38 31 124 32 52 53 45 - 79 62
Ht| 35 - 55 43 39 65 34 26 65 30 119 95 57
Ke| 36 42 44 39 95 37 37 43 37 83 52 50
Kk| 32 41 28 78 36 30 39 23 72 50 46
Ma| 77 72 67 51 58 102 28 182 117 87
Ny| 74 91 61 30 99 30 170 117 88
On| 59 47 20 84 27 151 100 75
Ts| 60 51 91 57 153 138 98
Wf| 29 67 35 132 69 62
Ww| 24 30 - 44 40
Wz| 30 239 161 108
Yg| 44 38 37
Ys| 258 167
Zc| 128
Average S-band SNRs by baseline
| Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc AVG
----------------------------------------------------------------------------------------------
Bd| 18 27 46 42 28 44 32 43 30 80 32 20 42 23 34 64 43
Ft| 15 13 23 - 23 17 18 17 19 21 15 19 15 18 20 19
Hb| 47 24 22 31 21 21 22 37 20 20 19 23 16 23 30
Ho| 43 35 49 24 24 20 72 24 32 25 35 - 45 42
Ht| 22 - 31 30 26 41 30 18 37 25 33 50 32
Ke| 29 20 22 19 40 18 18 20 22 17 22 26
Kk| 27 34 27 66 35 26 30 26 26 36 37
Ma| 31 29 30 27 15 38 21 33 43 32
Ny| 30 42 32 17 38 23 33 46 34
On| 29 26 15 33 22 29 39 29
Ts| 34 27 40 33 33 61 47
Wf| 18 33 18 31 35 30
Ww| 15 17 - 26 23
Wz| 22 41 57 37
Yg| 17 23 25
Ys| 46 33
Zc| 46
===========================================================
*** General CONT14 notes ***
=====================================================================
CONT14 Session Notes
May, 2014
First session start: May 6, 2014 0:00:00 UT
End of last session: May 20, 2014 23:59:59 UT
The CONT14 sessions will be observed in UT days, i.e. in sessions
of 0-24 UT. UT-day observing yields the most accurate combination
and comparison of results from other techniques. This will also be
the operation mode of VGOS observing.
=====================================================================
Number of 24-hr sessions: 15
Participating stations:
Badary, Fortaleza, HartRAO (15-m), Hobart (12-m and 26-m), Katherine,
Kokee, Matera, Ny Alesund, Onsala, Tsukuba, Warkworth, Westford,
Wettzell, Yarragadee, Yebes, Zelenchukskaya
Average number of scans per day: 1,622
Average number of observations per day: 20,141
Total number of scans in campaign: 24,336
Total number of campaign observations: 302,115
=====================================================================
Schedules
The sources for the schedules are based on the best 100 sources. From
those, sources were removed iteratively that only contributed 5 observations
and less. Further, four sources that showed more than 20% of non-detections
in the R1 and R4 sessions over the last six months prior to CONT14 have
been removed as well. In a final step ICRF2 special handling sources were
added to the list, resulting in 73 sources used for creating the schedules.
The sources for the schedules are based on the best 155 sources (120 from the
geodetic.good catalog and 35 special handling sources). From the 155 sources,
sources were removed in an iterative process that contributed five or less
observations. The first iteration resulted in 81 remaining sources and the
last iteration resulted in 77 remaining sources. Further, four sources that
showed more than 20% of non-detections in the R1 and R4 sessions over the
last six months prior to CONT14 were removed as well. This resulted in 73 sources
for the CONT14 campaign, 50 geodetic.good sources and 23 special handling sources.
SNR Targets: Minimum SNR for all baselines (except with Hobart-26m):
X-band (margin 0): 20
S-band (margin 0): 15
Minimum SNR for baselines with Hobart-26m:
X-band (margin 0): 18
S-band (margin 0): 13
=====================================================================
Special Instructions
Refer to the schedule summary at the end of the file for the overall
schedule of sessions. One, two, three, or four session days will
be recorded onto one disk module. Several session days are grouped
together for sharing disks creating the following recording groups for
all stations. PLEASE DO NOT CHANGE RECORDING GROUPS, PLEASE FOLLOW
AS LISTED.
Recording groups for Bd, Ft, Hb, Ho, Ht, Ke, Kk, Ny, Ts, Wf, Ww, Wz,
Yg, Ys, and Zc:
C1401 ==> ---+
C1402,C1403 ==> |
C1404,C1405,C1406,C1407 ==> +---> Ship or e-transfer
C1408,C1409,C1410 ==> +---> to Bonn Correlator
C1411,C1412,C1413,C1414 ==> |
C1415 ==> ---+
Recording groups for Ma and On:
C1401 ==> ---+
C1402,C1403 ==> |
C1404,C1405 ==> |
C1406,C1407 ==> +---> Ship all modules to
C1408,C1409,C1410 ==> +---> Bonn Correlator
C1411,C1412 ==> |
C1413,C1414 ==> |
C1415 ==> ---+
All CONT14 sessions will be correlated at the Bonn Correlator. This
includes also the R4-equivalents.
The data transport to the correlator will be done either by physical
shipment of modules or by electronic transfer of data (e-transfer).
The following stations will ship their recording modules to the
Bonn Correlator: Bd, Kk, Ma, On, Wf, Wz, Ys, and Zc. The station
Ft will ship their modules to the Washington Correlator (WACO).
WACO will then e-transfer the Ft data to the Bonn Correlator.
The following stations will e-transfer their data to the Bonn
Correlator: Hb, Ho, Ht, Ke, Ny, Ts, Ww, and Yg.
CABLE CAL CHECK: A cable check should be performed before the start
of the first session and after the end of the last session. Stations
should NOT do any cable cal checks (or anything else that might
interrupt the 5 MHz to the antenna unit) between sessions.
SYSTEM CHECKS: With the exception of C1401 and C1415, all CONT14
sessions have a one-hour slot for each station to perform system and
pointing checks. The one-hour slots for all stations are staggered
over the 24-hour period of the session. Stations should check the
system and pointing during the one-hour slot preferably during the
first 30 min of the slot (to allow for corrective measures in the
subsequent 30 min if necessary). The station is scheduled in tag-along
mode during the one-hour slot allowing the station to leave and
re-enter the session at any given moment of the slot. The stations
should rejoin the current schedule as soon as practical.
The stations observing the various Intensive sessions have a 90-min
break from the CONT14 schedule followed by a 30-min period for system
and pointing checks, resulting in a two-hour slot (readily identifiable
in the table below by the 1/4 of an hour start and stop times). The
"Intensive stations" were also scheduled in tag-along mode during the
two-hour slot. The system and pointing checks, however, should be
performed after the Intensive observation.
The slots are as follows (for C1402 through C1414); the first day
of CONT14 (C1401) and the last day (C1415) have no station check
times.
Mon-Thu: Bd 19:15 - 21:15 UT C1402,C1403
Ft 14 - 15 UT C1407,C1408,C1409,C1410
Hb 4 - 5 UT C1414
Ho 5 - 6 UT
Ht 7 - 8 UT
Ke 23 - 24 UT
Kk 18:15 - 20:15 UT
Ma 10 - 11 UT
Ny 12 - 13 UT
On 8 - 9 UT
Ts 1 - 2 UT
Wf 15 - 16 UT
Ww 22 - 23 UT
Wz 18:15 - 20:15 UT
Yg 3 - 4 UT
Ys 9 - 10 UT
Zc 19:15 - 21:15 UT
Fri: Bd 18:15 - 20:15 UT C1404
Ft 14 - 15 UT C1411
Hb 4 - 5 UT
Ho 5 - 6 UT
Ht 7 - 8 UT
Ke 23 - 24 UT
Kk 18:15 - 20:15 UT
Ma 10 - 11 UT
Ny 12 - 13 UT
On 8 - 9 UT
Ts 1 - 2 UT
Wf 15 - 16 UT
Ww 22 - 23 UT
Wz 18:15 - 20:15 UT
Yg 3 - 4 UT
Ys 9 - 10 UT
Zc 18:15 - 20:15 UT
Sat: Bd 18:15 - 20:15 UT C1405
Ft 14 - 15 UT C1412
Hb 4 - 5 UT
Ho 5 - 6 UT
Ht 13 - 14 UT
Ke (see Sunday)
Kk 23 - 24 UT
Ma 10 - 11 UT
Ny 12 - 13 UT
On 11 - 12 UT
Ts 7:15 - 9:15 UT
Wf 15 - 16 UT
Ww 22 - 23 UT
Wz 7:15 - 9:15 UT
Yg 3 - 4 UT
Ys 9 - 10 UT
Zc 18:15 - 20:15 UT
Sun: Bd 19:15 - 21:15 UT C1406
Ft 14 - 15 UT C1413
Hb 4 - 5 UT
Ho 5 - 6 UT
Ht 13 - 14 UT
Ke 0 - 1 UT
23 - 24 UT
Kk 23 - 24 UT
Ma 10 - 11 UT
Ny 12 - 13 UT
On 11 - 12 UT
Ts 7:15 - 9:15 UT
Wf 15 - 16 UT
Ww 22 - 23 UT
Wz 7:15 - 9:15 UT
Yg 3 - 4 UT
Ys 9 - 10 UT
Zc 19:15 - 21:15 UT
Stations should rejoin as soon as practical after their system and
pointing checks. Before rejoining please consider the slewing time
from the antenna's current position to the next scan, including which
cable wrap the antenna should be on. You may need to pick a slightly
later scan in order to have enough slewing time and reach the correct
cable wrap.
A suggested technique for breaking away from the schedule is to use
the "halt" command to stop the schedule to begin the system checks.
Once checks are complete and the scan to rejoin the schedule has been
determined, a suggested way to rejoin is to use the following command:
schedule=session,#line
where "session" is the name of the .snp schedule file and "line" is the
line number for the scan shown in the schedule listing.
MODULE SHIPPING: The modules can be sent as soon as no further recording
is planned on them. This can be at the end of a single session (C1401,
C1415) or at the end of a set of sessions (recording group). Stations
should label the modules to indicate which session(s) the modules
contain.
The R-type sessions will be processed within the nominal 15 day time delay
for the rapid sessions. These sessions require that the modules be shipped
to the correlator expeditiously. Rapid sessions are C1401, C1403, C1407,
C1410, and C1414.
E-TRANSFER: The data of the R-type sessions need to be transferred as soon
as possible and all rapid sessions (C1401, C1403, C1407, C1410, and C1414)
are to be transferred before any of the other sessions. The Bonn Correlator
has a limited bandwidth for e-transfers (1 Gbps). Hence, e-transfer rates
are limited for each station to around 100 Mbps. The transfer of a single
session will thus take up to three full days per station. The Bonn
Correlator might be able to increase bandwidth for CONT14 for a limited
time. The e-transfer stations should consult with the Bonn Correlator
on organizing the e-transfers.
MIDOB: Each station should verify that their MIDOB procedure completes
in 20 seconds or less. The minimum scan length is 20 seconds.
MARK 5B OPERATIONS: Stations using Mark 5B recorders should be aware
that they should not automatically re-sync the 5B if they receive the
error message:
?ERROR sc -24 setcl: Mark 5B syncerr_gt_3, use fmset 's' option to fix.
This error message is poorly worded. Newer FS versions have the message
("using" misspelled):
?ERROR sc -24 setcl: Mark 5B syncerr_gt_3, CONSIDER uisng fmset 's' option to fix.
You should not use fmset to re-sync the Mark 5B unless fmout-gps is
greater than +/- 30 milliseconds. If you do a re-sync, please be sure
the time is correct as well. In other cases, you should not reset the
Mark 5B time unless it is off by more than +/- 5 seconds (as shown by
setcl in units of 0.01 seconds). For the station using a DBBC (in
particular AuScope stations), if the fmout-gps starts to change
continuously, it may be worthwhile to reset the DBBC (and re-sync and
set the time in the 5B with fmset), if that will stop the continuous
changing.
B2A PROBLEM: Please be aware that for some Mark 5 recorders it is not
possible to record a module in bank A if it has already been recorded
on in bank B. There should not normally be a need to move a module
from one bank to another. However, if it does, please be aware of this
restriction.
KEY SWITCH ISSUE: We would like to remind all stations to not touch the
Mark 5 while it is recording. If you turn a key switch while recording,
even for the inactive bank, you will probably corrupt the data on the
active disk pack. Additionally, if the key for the inactive bank is
turned to locked, the Mark 5 will not respond to some commands from the
FS for 20 seconds or more.
Please turn the key to "unlocked" only when not recording. Please turn
the key to "locked" only when the Mark 5 is not recording and the FS
will be idle for at least 20 seconds.
If you have any questions about this , please contact Ed,
(Ed.Himwich@nasa.gov).
LOG FILES: Log files should be ftp'd to an IVS Data Center every day,
following the end of each session. This will ensure the logs are
available for the correlator to set up for pre-passing and for
processing the rapid sessions. It will also let the status of
each station be checked. Automatic scripts process the logs each
night, the summary files and plots are posted on the session web
page, and the session performance matrix is updated.
STARTING SCHEDULES: For the first schedule you will need to make sure
that you start it early enough to reach the first source. Please check
to make sure you go to the right cable wrap for this scan. If your
antenna interface does not support the "cable wrap" parameter for the
"source=..." you may need to force the antenna to the right wrap
manually. Of course changing the wrap will require additional time if
it is needed. The cable wrap needed can be found in the DRUDG listing
(for example the one from option 5) or from the "source=..." command
in the .snp file.
Starting with the second schedule we have allowed enough time to slew
to the new source from the last source in previous schedule if the
schedule is started by 0000 UT. The cable wrap should be handled
correctly without taking special action if this rule is followed.
In order to get as much data, and with as few gaps, as possible, we have
allowed a minimum of only three minutes for changes between schedules. In
other words, at a schedule transition the old schedule will end
recording by 23:57:00 UT and the operator needs to start the new
schedule before 00:00:00 UT. This is a short time, but we think it
should be sufficient. For stations with Mark 5 recorders we think that
at most two operator actions should be needed for a schedule transition.
The first action is that between some schedules it may be necessary to
change the recording bank with a "mk5=bank_set=inc;" command and then
wait up to 20 seconds for the recorder to settle for the "Selected" LED
to come on. The second is that every schedule transition will require
the new schedule to be started with a "schedule=..." command. The
"bank_set" command should require less than 30 seconds for the operator
to enter and 20 seconds or so for the Mark5 to complete since the module
can already be inserted. The "schedule=..." command should require 30
seconds or less to enter. This still leaves an additional minute and a
half or so in case an old module must be removed and a new one inserted
and selected and/or there are minor problems. In case of a more serious
problem, please rejoin the schedule as soon as possible. Since we are
not expecting many problems, we didn't want to allow a lot of extra time
to handle them, but we recognize that they may happen. Once the schedule
has started, you will need to quickly enter a "mk5relink" to continue
the schedule after the "halt" in "ready_disk".
We aren't as familiar with K5 operations, but the personnel at Tsukuba
have in the past felt that three minutes is sufficient time.
Assuming that there is no need to insert a module, it is possible to
automate the transition for Mark 5 stations. The cable wrap
information is carried forward between consecutive schedules to make
this possible. There are many possible ways to automate this. One is
to place a procedure, perhaps called "change", in the "station"
procedure library with contents similar to:
"uncomment next two lines if a bank change is needed
"mk5=bank_set=inc;"
"!+30s
schedule=c14nnxx,#1
where "nn" is the schedule number and "xx" is the station's two letter
code. Before the schedule change time, the operator would enter a time
schedule command such as:
change@2014.ddd.23:58:00
where "ddd" is the day number. The contents of "change" would need to be
modified for each transition, changing the schedule name and possible
commenting/uncommenting the "mk5=..." and "!+30s" commands as
appropriate. You will also need to comment out the "halt" in your
"ready_disk" procedure. This approach has *NOT* been tested, but we expect
it to work. If you want to use this approach, it can easily be tested
before use and/or should be monitored the first time it is used. Other
schemes are possible as well.
READY, START, and STOP messages: Stations are requested to slightly
modify their normal procedures for sending READY, START, and STOP
messages. Please send the normal READY and START messages for the first
experiment and the normal STOP message after the last experiment. Due to
the quick transitions between schedules and the separate system check
time, the procedure for the other messages should be modified to make
them reasonable. A suggested scheme would be to send the STOP message as
soon as convenient after the start of the next schedule. The START
message for the new schedule can be sent as soon as convenient after
that. The READY message can be sent after the system checks later during
that schedule, summarizing the results for those checks and any other
status information.
If you normally use "msg" to send your READY, START, and STOP messages,
you probably still can. However, for the second and following schedules
the following changes are recommended:
(1) For the STOP message, please be sure the correct (previous) session
name is shown and enter disk inventory only for CONT14 modules. Any
problems should be summarized in the "comments" text box. Please be sure
to include information about any problems with disk modules requiring
use of a spare. (As a reminder, please be sure to send a timely message
about any disk module problem to ivscc@ivscc.gsfc.nasa.gov when the
incident happens. The sooner the Coordinating Center is informed of a
problem, the better the chance that a useful response will be possible.)
(2) After sending the previous schedule's end message, select the START
message form manually and enter the required information. Please verify
that the name of the session is correct. If you have the name and time
for the first source that was observed, please enter it. Otherwise, you
can use 0000 as the time and "source" as the name of the source.
(3) After performing the system checks, please select the READY message
form manually and enter the information as appropriate including the
session name. Please be sure to de-select the "auto-start" check-box on
the form. You can turn it off persistently using the "auto-start" check
box on the "Setup" menu. (If you do that, please be sure to re-enable it
after CONT14 is finished.) If "auto-start" is accidentally selected when
a READY message is sent, it may be possible to cancel the message on the
START form before an erroneous message is sent, but if not, please don't
worry about it. (As a reminder, *** please be sure to NOT do a cable check
during the system checks. ***)
MARK5 MODULE PREPARATION: Please prepare all modules you will use for
CONT14, including spares, before the session begins. It is strongly
recommended that all modules be conditioned after shipping and before
recording. Whether a module has been locally conditioned or not, it is
*necessary* to perform the so-called "FS Checks" procedure for *every*
module and to perform it using the Mark 5 it will be recorded in. This
procedure has recently (April 17) been re-distributed to the CONT14
stations that use Mark5s. Please note that you must use the large
directory size when checking the modules for. This means to use the
command
reset=erase
with no additional parameters. If you do not have a copy of the message
or have any questions. please contact Ed (Ed.Himwich@nasa.gov).
Please monitor the first "scan_check" after a change of module,
particularly at schedule transition, to make sure the new module is
working. If not, please change to a spare module and rejoin the schedule
as soon as possible. Please set the bad module aside, inform the
Coordinating Center (ivscc@ivscc.gsfc.nasa.gov) and only try to re-use
it if you have otherwise run out of media towards the end of CONT14.
=====================================================================
Table 1: CONT14 Observing Plan Summary
Day Code Start End Correlator Rapid
--- ----- ---------- ---------- ---------- -----
Mon system check
cable check
Tue C1401 126-000000 126-235700 Bonn *R1*
Wed C1402 127-000000 127-235700 Bonn
(this session includes a system check)
Thu C1403 128-000000 128-235700 Bonn *R4*
(this session includes a system check)
Fri C1404 129-000000 129-235700 Bonn
(this session includes a system check)
Sat C1405 130-000000 130-235700 Bonn
(this session includes a system check)
Sun C1406 131-000000 131-235700 Bonn
(this session includes a system check)
Mon C1407 132-000000 132-235700 Bonn *R1*
(this session includes a system check)
Tue C1408 133-000000 133-235700 Bonn
(this session includes a system check)
Wed C1409 134-000000 134-235700 Bonn
(this session includes a system check)
Thu C1410 135-000000 135-235700 Bonn *R4*
(this session includes a system check)
Fri C1411 136-000000 136-235700 Bonn
(this session includes a system check)
Sat C1412 137-000000 137-235700 Bonn
(this session includes a system check)
Sun C1413 138-000000 138-235700 Bonn
(this session includes a system check)
Mon C1414 139-000000 139-235700 Bonn *R1*
(this session includes a system check)
Tue C1415 140-000000 140-235959 Bonn
Wed cable check
Notes for stations:
- Do NOT do any cable checks other than the two checks shown.
- Each schedule will end no later than the listed "End" time.
- When schedule days change, enough time has been allowed to slew from
the last source of the old schedule to the first source of the new
schedule assuming the new schedule is started by 0000 UT. The actual
first observation can be up to a few minutes after the nominal
start.
- Shipping stations must send modules for the "Rapid" sessions express
to the correlator, as usual. e-transfer stations need to transfer the
data of all "Rapid" sessions first; non-"Rapid" sessions shall be
e-transferred after all "Rapid" sessions are completed. The correlator
is Bonn for all sessions.
- e-transfer stations need to keep all modules onto which CONT14 data
were recorded until the Bonn Correlator gives the go-ahead to re-use
these modules for other sessions.
- Stations should label the disk modules with DRUDG printed labels to show
which CONT14 session days are recorded on them.
- Stations should confirm all initiated shipments to the correlators.
- For the non-Intensive stations, there are one-hour slots for system
checks (see Table in SYSYEM CHECKS). The system checks should preferably
be performed in the first 30 min of the one-hour slot to allow for
corrective measures in the subsequent 30 min if necessary. The re-entry
can occur at any time during the one-hour slots, as the stations are
added in tag-long mode during that period. Please consider the cable
wrap when re-entering.
- The observation of the Int1, Int2, Ru-U Intensives will continue during
CONT14. There will be no Int3 Intensive. The slots for Intensive
observing and system checks are two hours and aligned with the Int1
Int2, and Ru-U Intensive observing periods. The stations Bd, Kk, Ts, Wz,
and Zc will leave the CONT14 schedule at the beginning of their two-hour
slots and re-join it after the Intensive and their system checks as
soon as possible. The system checks should be performed in the last
30 min of the two-hour slot. The re-entry can occur at any time during
the two-hour slots, as the stations are added in tag-long mode during
that period. Please consider the cable wrap when re-entering.
- If necessary, it should be possible to automate the change in
schedules. If you want to do this and want advice, see above or
please contact Ed (Ed.Himwich@nasa.gov).
Notes for the correlator (BONN):
- A disk module may contain data of one, two, three, or four observation
days. The disk modules have labels according to the sessions being recorded.
- The Int1, Int2, and Ru-U Intensive sessions will be observed during CONT14.
There are no Int3 Intensive sessions scheduled. The correlation of the Int1,
Int2, and Ru-U sessions will be done at the Washington, Tsukuba, and IAA
correlators; the shipment of the data for the Intensive sessions has
precedence over CONT14.
- Five of the 15 CONT14 days are considered rapid turn-around sessions.
These R1 and R4 equivalents are to be correlated first. The equivalents
are: C1401 = R1, C1403 = R4, C1407 = R1, C1410 = R4, C1414 = R1.
- The accumulation period (AP) should be set to 1 sec.
==============================================================================
Table 2: Recording Groups and Module Usage Summary:
===========================================================================================
Bd Ft Hb Ho Ht Ke Kk Ma Ny On Ts Wf Ww Wz Yg Ys Zc
===========================================================================================
C1401 0.9 1.7 1.8 0.8 1.4 2.2 1.7 1.9 1.6 2.3 0.9 1.7 2.1 1.3 2.3 1.4 0.9
-----------------------------------------------------------------------------------
B D D B B G D D D G B D G B G B B
===========================================================================================
C1402 0.9 1.6 1.8 0.7 1.3 2.1 1.7 1.8 1.6 2.1 0.9 1.7 2.0 1.3 2.2 1.3 0.8
C1403 0.9 1.6 1.7 0.7 1.3 2.1 1.8 1.8 1.6 2.1 0.9 1.7 2.0 1.3 2.2 1.3 0.8
-----------------------------------------------------------------------------------
1.8 3.2 3.5 1.4 2.6 4.2 3.5 3.6 3.2 4.2 1.8 3.4 4.0 2.6 4.4 2.6 1.6
D G G B G H G G G H D G G G H G D
===========================================================================================
C1404 0.9 1.6 1.8 0.7 1.3 2.1 1.7 1.8 1.6 2.1 1.0 1.7 2.0 1.3 2.2 1.3 0.8
C1405 0.9 1.6 1.9 0.7 1.3 2.3 1.7 1.8 1.6 2.1 0.9 1.7 2.1 1.2 2.2 1.4 0.8
. . . . . . . ----- . ----- . . . . . . .
. . . . . . . 3.6 . 4.2 . . . . . . .
. . . . . . . G . H . . . . . . .
. . . . . . . ===== . ===== . . . . . . .
C1406 0.9 1.6 1.8 0.7 1.3 2.0 1.7 1.8 1.6 2.1 0.9 1.7 2.1 1.3 2.1 1.4 0.8
C1407 0.9 1.6 1.8 0.7 1.2 2.1 1.7 1.8 1.6 2.1 0.9 1.7 2.1 1.3 2.2 1.3 0.9
-----------------------------------------------------------------------------------
3.6 6.4 7.3 2.8 5.1 8.5 6.8 3.6 6.4 4.2 3.7 6.8 8.3 5.1 8.7 5.4 3.3
G J J G H L J G J H G J L H L H G
===========================================================================================
C1408 0.9 1.6 1.7 0.7 1.2 2.1 1.6 1.8 1.6 2.1 0.9 1.7 2.0 1.3 2.1 1.4 0.8
C1409 0.9 1.6 1.8 0.7 1.2 2.1 1.6 1.8 1.6 2.0 1.0 1.7 1.9 1.2 2.1 1.3 0.8
C1410 0.9 1.7 1.8 0.7 1.4 2.2 1.6 1.9 1.6 2.2 0.9 1.8 2.0 1.3 2.2 1.3 0.8
-----------------------------------------------------------------------------------
2.7 4.9 5.3 2.1 3.8 6.4 4.8 5.5 4.8 6.3 2.8 5.2 5.9 3.8 6.4 4.0 2.4
G H H G G J H H H J G H H G J G G
===========================================================================================
C1411 0.9 1.7 1.8 0.7 1.3 2.1 1.5 1.8 1.6 2.1 0.9 1.7 2.0 1.2 2.1 1.3 0.8
C1412 0.9 1.7 1.8 0.7 1.3 2.2 1.7 1.8 1.6 2.1 0.9 1.7 2.0 1.3 2.2 1.3 0.8
. . . . . . . ----- . ----- . . . . . . .
. . . . . . . 3.6 . 4.2 . . . . . . .
. . . . . . . G . H . . . . . . .
. . . . . . . ===== . ===== . . . . . . .
C1413 0.9 1.7 1.7 0.7 1.3 2.0 1.7 1.9 1.7 2.2 1.0 1.7 1.9 1.3 2.2 1.4 0.9
C1414 0.9 1.7 1.8 0.7 1.2 2.1 1.7 1.8 1.7 2.1 0.9 1.7 2.0 1.3 2.2 1.3 0.8
-----------------------------------------------------------------------------------
3.6 6.8 7.1 2.8 5.1 8.4 6.6 3.7 6.6 4.3 3.7 6.8 7.9 5.1 8.7 5.3 3.3
G J J G H L J G J H G J J H L H G
===========================================================================================
C1415 0.9 1.8 1.9 0.7 1.4 2.2 1.7 1.9 1.6 2.2 1.0 1.7 2.1 1.3 2.3 1.4 0.8
-----------------------------------------------------------------------------------
B D D B B G D D D G B D G B G B B
===========================================================================================
Module sizes: B ( 1.44 TB) Note: The storage requirement listed includes
D ( 2.00 TB) the tag-along periods for system checks
G ( 4.00 TB) and the Intensives. Actuals will thus be
H ( 6.00 TB) slightly smaller.
J ( 8.00 TB)
L (16.00 TB)
Notes:
- Example (recording group C1408, C1409, C4110 for station Matera):
+ record session C1408 on the H module, then
+ record session C1409 on the same H module, and then
+ record session C1410 on the same H module.
- Suggestions for handling disk module changes are provided at the
end of this document.
- Tsukuba will record on K5 disks and will convert the K5 format to
Mark 5B. The Mark 5B data will then be e-transfered to a server at
Bonn.
- Each station has two spare modules allocated that can be used when
a regular disk fails:
Bd 2G
Ft 2J
Hb 2J
Ho 2G
Ht 2H
Ke 2L
Kk 2J
Ma 2J
Ny 2J
On 2J
Ts (2 K5 modules equivalent to G-size Mark 5 module)
Wf 2J
Ww 2L
Wz 2H
Yg 2L
Ys 2H
Zc 2G
- An "extra" disk is normally inserted once recording has started on
the last allocated disk for an experiment. This is done in case the
the current disk fills early. Typically, this should be the module
that would be inserted next if recording goes as planned. If nothing
goes wrong, this will make it easy to transition to the next
module/schedule. If a disk does fill early, the station will have to
consider how to record the end of the next experiment, since some of
that experiment's module will have been used to for the current
experiment. Please also see the DISK MODULE CHANGES section
below. Please inform the coordinating center
(ivscc@ivscc.gsfc.nasa.gov) if a module fills prematurely.
- Please use module sizes according to the latest distribution memo
dated April 15, 2014. The modules you have on site allocated for
CONT14 maybe larger than required, because the final schedule files
were created after the distribution memo. If you have any questions
please contact the Coordinating Center.
=====================================================================
Recording mode
Name Code
GEOSX8N 8F
Recording mode setup for:
BADARY FORTLEZA HART15M HOBART12 HOBART26 KATH12M KOKEE MATERA
NYALES20 ONSALA60 TSUKUB32 WARK12M WESTFORD WETTZELL YARRA12M YEBES40M
ZELENCHK
Mode Tot.Rate Tot.BandW #BBC #bits Barrel
Mk341:1 512 Mbits 256 MHz 14 2 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
8.00 MHz 1 32(*1) 32 0.00
X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz
S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz
Effective number of 1-bit channels recorded per sub-pass
X S Total
19.13 11.48 30.61
=====================================================================
===================
DISK MODULE CHANGES
===================
These experiments should only require one (or part of a) disk module
each. Some modules will have two, three, or four experiments recorded
on them. Stations should follow the assigned list of module sizes
according to Table 2 in these notes. DRUDG does not know the sizes, so
it shows an ever-increasing GByte count in the listings. Please be aware
that for the second experiment on a module, the Byte Count in the listing
will not reflect the volume of data on the module from the previous
experiment.
Here are four suggestions for handling the changes:
1) Planning: Select the modules you will use for each experiment ahead
of time using the sizes in Table 2 above as a guide.
2) Changes: After the last experiment for a module has been recorded
and recording has switched to a new module, change the old module as
soon as practical. You should put in the next module that is needed
after the new one that is currently recording. It is good practice to
change the module as soon as possible because then the FS will have a
module to switch to in case the one being recorded becomes full
prematurely. You should check periodically during the experiments that
the modules are filling at the expected rate.
If a module does fill prematurely, a window will appear prompting you
to change the module. The window will give both the VSN and bank that
needs to be changed. You should dismiss the window once the module
has been changed.
In situations where you have a module fill prematurely, you will need
to make a practical decision about the next module to put in. You will
at this point be recording the rest of the current experiment on the
module for the next experiment. It may be a good choice to put in
a spare module that will allow you to finish recording the next
experiment once the current module is full. Please be aware this may
affect your plans for automated module changes and which modules will
need to receive expedited shipping.
3) Labels: Label the modules before removing then from the Mark 5,
also affix a red dot. This will help avoid mixing-up the modules. At a
minimum, label the module with the experiment it was used in and its
sequence number.
You should be able to print a label using:
cd /usr2/log
drudg LOG_NAME VSN
where LOG_NAME is the name of the experiment log, including the ".log"
and VSN is the eight character VSN. It should be done whenever a module
has been filled or a schedule has ended (in the case of a not completely
filled module). This ensures that the label contains the correct informa-
tion. The label should then be affixed promptly to help keep track of
the module contents.
If you are not able to print module labels and need help trouble-shooting
this, please contact Ed (Ed.Himwich@nasa.gov). This issue can be worked
on even after CONT14 has started.
4) Locking and unlocking: When inserting or removing a module, turn
the latch to "locked" or "unlocked" only when the Mark 5 is not
recording. In addition, do not turn the key to "locked" unless the FS
will not be sending commands (either to setup or start recording) to
the Mark 5 for at least 20 more seconds. An "unlocked" module can be
safely slide in or out at anytime.
If you have any questions, please contact Ed Himwich
(Ed.Himwich@nasa.gov).