Session Notes for CONT08 campaign: c0802
Prepared by C. Thomas and D. Behrend, NVI, Inc./GSFC
Refer to http://ivscc.gsfc.nasa.gov/program/cont08/
for general information.
Note: Updated version with Zc using 64 track recording mode.
This set of notes consists of two parts:
1) Individual day notes
2) General CONT08 notes (repeated for all CONT08 days)
*** Individual day notes ***
===========================================================
Parameter values for experiment C0802
Experiment description: CONT08 Day 02
Scheduler: CCT Correlator: WACO
Nominal start: 2008-226-00:04:10 Nominal end: 2008-226-23:57:00
Current yyyyddd: 2008226 (2008.62) ( 14692 MJD, WED. 13AUG.)
Greenwich sidereal time: 21:31: 0.00 ( 0: 4:10 UT)
Sun's RA and DEC: 9h 32.1m 14d 37.0
===========================================================
First observations
Observation listing from file ./c0802.skd for experiment C0802
Source Start DURATIONS
name yyddd-hhmmss Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc
0955+476 08226-000410| 20 24 24 20 20 20 |
1519-273 08226-000608| 100 128 128 |
0235+164 08226-000646| 29 29 20 20 20 |
1954-388 08226-000930| 130 130 |
0133+476 08226-000939| 20 20 20 20 20 20 20 20|
End of listing.
===========================================================
Last observations
Observation listing from file ./c0802.skd for experiment C0802
Source Start DURATIONS
name yyddd-hhmmss Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc
2052-474 08226-234848| 174 174 |
0642+449 08226-234907| 20 20 20 20 20 20 20 20|
1357+769 08226-235134| 20 20 24 24 20 20 20 20 20|
1954-388 08226-235320| 131 131 |
0955+476 08226-235347| 20 24 24 20 20 20 20 |
0552+398 08226-235602| 27 20 20 27 20 20 20 20|
End of listing.
===========================================================
SKED Summary from file ./c0802.skd for experiment C0802
(all scans with at least one subnet station)
Average number of obs. per baseline per source(normalized by up-time) = 9.3
Min = 0.0 Max = 1872.0 (Baseline Ny-On on 1606+106) RMS = 35.1
Total time: 1432 minutes ( 23.9 hours).
Key: Hh=HARTRAO Kk=KOKEE Mc=MEDICINA Ny=NYALES20 On=ONSALA60
Sv=SVETLOE Tc=TIGO Ts=TSUKUB32 Wf=WESTFORD Wz=WETTZELL
Zc=ZELENCHK
Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc Avg
% obs. time: 21 30 14 19 17 12 41 16 25 15 9 20
% cal. time: 4 8 6 6 6 6 4 7 6 6 4 6
% slew time: 62 29 44 28 28 62 12 22 23 13 50 34
% idle time: 12 33 35 46 48 20 41 54 45 65 36 40
total # scans: 341 645 476 533 478 476 369 607 480 501 356 478
# scans/hour : 14 27 20 22 20 20 15 25 20 21 15 20
Avg scan (sec): 53 40 25 30 31 21 96 22 45 25 21 36
# data tracks: 32 32 32 32 32 32 32 32 32 32 32
# Mk5 tracks: 32 32 32 32 32 32 32 32 32 32 32
Total GBytes: 1309 1873 872 1168 1083 718 2546 975 1568 901 545 1233
Total GB(M5): 1163 1665 775 1039 962 638 2263 867 1393 801 485 1096
# of tapes : 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
tape change times (hhmm):
Total number of tapes: 1.6 Total GBytes (M5) recorded: 12051.2
# OF OBSERVATIONS BY BASELINE
| Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc StnTotal
-----------------------------------------------------------------
Hh| 0 228 94 176 153 138 73 100 208 125 1295
Kk| 114 236 148 174 180 409 248 136 123 1768
Mc| 293 388 352 63 184 211 442 266 2541
Ny| 354 359 17 337 249 335 253 2527
On| 400 33 221 219 433 280 2652
Sv| 21 249 189 390 298 2585
Tc| 22 158 45 17 694
Ts| 155 208 183 2041
Wf| 228 140 1897
Wz| 290 2715
Zc| 1975
Number of 2-station scans: 519
Number of 3-station scans: 219
Number of 4-station scans: 89
Number of 5-station scans: 110
Number of 6-station scans: 110
Number of 7-station scans: 93
Number of 8-station scans: 117
Number of 9-station scans: 46
Number of 10-station scans: 0
Number of 11-station scans: 0
Total # of scans, observations: 1303 11345
===========================================================
*** General CONT08 notes ***
=====================================================================
CONT08 Session Notes
August, 2008
First session start: August 12, 2008 0:0000 UT
End of last session: August 26, 2008 23:5959 UT
The CONT08 sessions will be observed in UT days, i.e. in sessions
of 0-24 UT. The schedules are written this way following a request
from the analysts. UT day observing is needed to make the most
accurate combination and comparison of results from other techniques.
=====================================================================
Number of 24-hr sessions: 15
Participating stations:
Kokee, HartRAO, Medicina, Ny Alesund, Onsala, Svetloe, TIGO,
Tsukuba, Westford, Wettzell, Zelenchukskaya
Average number of observations per day: 11,440
Total number of campaign observations: 171,594
=====================================================================
Schedules
The sources for the schedules are based on the best 80 sources of
the good geodetic source catalog, which showed less than 15% of non-
detections in the R1 and R4 sessions in the first half of 2008.
An extra 3 seconds is added at the start of each scan for correlator
synchronization. These extra seconds are not included in the
calculation of the scan SNR.
SNR Targets: Minimum SNR for all baselines (except with TIGO):
X-band (margin 5): 20
S-band (margin 3): 15
Minimum SNR for baselines with TIGO:
X-band (margin 5): 15
S-band (margin 3): 12
Zelenchukskaya was tagged along.
=====================================================================
Special Instructions
Refer to the schedule summary at the end of the file for the overall
schedule of sessions. Several session days will be recorded onto 1 or
2 disk modules. One module may be used to record more than one session
or session parts. Several session days are grouped together for sharing
disks creating the following recording groups.
Recording groups for Kk, Mc, Sv, Tc, Ts, Wf, Wz, Zc:
C0801 ==> ---+
C0802,C0803 ==> |
C0804,C0805 ==> |
C0806,C0807 ==> +---> Washington
C0808,C0809,C0810 ==> |
C0811,C0812 ==> |
C0813,C0814,C0815 ==> ---+
Recording groups for Hh, Ny, On:
C0801 ==> ---+
C0802,C0803 ==> |
C0804,C0805,C0806,C0807 ==> +---> Washington
C0808,C0809,C0810 ==> |
C0811,C0812,C0813,C0814,C0815 ==> ---+
All CONT08 sessions will be correlated at the Washington Correlator.
This includes also the R1-equivalents.
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 C0801, all CONT08 sessions have a
two-hour slot for each station to perform system and pointing checks.
The two-hours slots for all stations are staggered over the 24-hour
period of the session. Stations should check the system and pointing
during the two-hour slot preferably during the first 30 min of the slot
(to allow for corrective measures in the subsequent 90 min if necessary).
The station is scheduled in tag-along mode during the two-hour slot
allowing the station to leave and re-enter the session at any given
moment of the slot.
The slots are as follows (for C0802 through C0815):
Weekdays: Hh 12-14 UT
Kk 18-20 UT
Mc 06-08 UT
Ny 10-12 UT
On 08-10 UT
Sv 04-06 UT
Tc 16-18 UT
Ts 00-02 UT
Wf 14-16 UT
Wz 18-20 UT
Zc 02-04 UT
Weekend: Hh 13-15 UT
Kk 00-02 UT
Mc 15-17 UT
Ny 17-19 UT
On 11-13 UT
Sv 05-07 UT
Tc 21-23 UT
Ts 07-09 UT
Wf 19-21 UT
Wz 07-09 UT
Zc 09-11 UT
Stations should rejoin as soon as possible. Before rejoining please
consider the slewing time from the antenna's current position to the
next scan. You may need to pick a slightly later scan in order to
have enough slewing time. Stations with AZEL antennas should also check
the cable-wrap of the next scan, as shown in the schedule listing. If
the wrap needs to be change, you may need to pick a later scan that will
allow the antenna enough time to slew around. If your antenna interface
does not respect the cable-wrap parameter in the "source=..." command,
you may need to force the antenna to the new wrap manually.
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 at has been
determined, a suggested way to rejoin is to use a command of the form
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.
FS TIME: Please check your FS/formatter clock offset during each system
check period with:
sy=run setcl &
If the offset has exceeded +/- 25 centiseconds, please reset the FS
clock model with:
sy=run setcl offset &
Please be sure to verify the formatter time against GPS so that you are
not just reseting the FS to an incorrect formatter time.
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 recording group, or within
a recording group when a module filled up and the recording is continued
on a second module. 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 by express. The expedited shipment holds also for modules
that contain both rapid and non-rapid data.
LOG FILES: Log files should be ftp'd to the 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 more time. 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 any antenna position if the schedule is started by
0000 UT. Enough time is included for a change in cable wrap if it is
necessary, based on the position of the expected position of the antenna
at the end of the previous schedule. The cases where a change in cable
wrap is necessary, or there may be a change in direction necessary, are
given in the table below. If your antenna interface supports the "cable
wrap" parameter for the "source=..." command you can ignore this table.
If your antenna does not implement the "cable wrap" parameter,
then you may need to manually force a wrap change according to the
table. For schedule day transitions with "Y", the antenna is expected to
need a wrap change. For schedule day transitions with "m", the antenna
may need to be forced to go the long way depending on where it ends the
previous schedule. For schedule day transitions with a ".", no action is
expected. Please check your schedule listings to help determine what the
needed action is in the "Y" and "m" cases. When it is necessary to
manually force the direction of antenna motion, please begin the change
in wrap as soon as possible after the end of the previous schedule.
Cable-wrap changes at schedule day changes.
-------------------------------------------
Stations
--------------------------------
Days Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc
Old new --------------------------------
1 2 . m m . m . m . . m .
2 3 . . . . . . . . . . .
3 4 . . . . . m . . . . .
4 5 . . . . . Y . . . Y .
5 6 . . m Y . m m . . m .
6 7 . . . . . Y . . . Y .
7 8 . . . m . . . . . m m
8 9 . . . Y . . . . . Y .
9 10 . . . . . . . . . . .
10 11 . . . . . . . . . . .
11 12 . . . . . m . Y . . .
12 13 . . . . . . . Y . . .
13 14 . . . . . . Y . . . .
14 15 . . . . . . Y . . . .
-----------------------------------------
This table gives the expected cable-wrap
changes for each station on the changes
between schedule days in CONT08.
Y = changes wrap
m = may need to go long way
. = no change expected
-----------------------------------------
In order to get as much data, and with as few gaps, as possible, we have
allowed a minimum of only 3 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
feels that 3 minutes is sufficent time.
It should be possible to automate the transition for Mark 5 stations if
there is no need to manually force a cable wrap change or insert a
module. You can do this by placing 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=con08nnxx,#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@2008.ddd.23:58:00
were "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 CONT08 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 CONT08 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.)
MODULE TESTING: Please test all modules you will use for CONT08,
including spares, before the session begins. To do this, please record a
few seconds of data, do a "scan_check", and erase the data. There will
not be time to test the modules during the session, but we expect
failure will be rare. 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 new 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 toward the end of
CONT08.
=====================================================================
Table 1: CONT08 Observing Plan Summary
Day Code Start End Correlator Rapid
--- ----- ---------- ---------- ---------- -----
Mon system check
cable check
Tue C0801 225-000000 225-235700 Washington *R1*
(system check)
Wed C0802 226-000000 226-235700 Washington
(system check)
Thu C0803 227-000000 227-235700 Washington *R4*
(system check)
Fri C0804 228-000000 228-235700 Washington
(system check)
Sat C0805 229-000000 229-235700 Washington
(system check)
Sun C0806 230-000000 230-235700 Washington
(system check)
Mon C0807 231-000000 231-235700 Washington *R1*
(system check)
Tue C0808 232-000000 232-235700 Washington
(system check)
Wed C0809 233-000000 233-235700 Washington
(system check)
Thu C0810 234-000000 234-235700 Washington *R4*
(system check)
Fri C0811 235-000000 235-235700 Washington
(system check)
Sat C0812 236-000000 236-235700 Washington
(system check)
Sun C0813 237-000000 237-235700 Washington
(system check)
Mon C0814 238-000000 238-235700 Washington *R1*
(system check)
Tue C0815 239-000000 239-235959 Washington
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 "End" time.
- Stations must send modules for the "Rapid" sessions express to the
correlator, as usual. The correlator is Washington for all sessions.
- Stations should label the disk modules to show which CONT08 session
days are recorded.
- Stations should confirm all initiated shipments to the correlators.
- The observation of the Int1 and Int2 Intensives will continue during
CONT08. There will be no Int3 Intensive. The pointing slots of two
hour length are aligned with the Int1 and Int2 Intensive observing
periods. The stations Kk, Ts, and Wz will leave the CONT08 schedule
and re-join it after the Intensive as soon as possible. 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
- 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. However for AZEL antennass if the
cable-wrap needs to be changed and the antenna interface will not handle
this automatically, it will be necessary to manually force the antenna to
the correct wrap. The cases where the wrap changes between schedules are
listed in the following table. In these cases, at the end of the old schedule
and if your antenna will not change wraps automatically, you should promptly
take action to force the needed change in the wrap.
- If necessary, it should be possible to automate the change in schedules in
cases where manual intervention is not needed to change the cable wrap. If
you want to do this and want advice, please contact Ed (Ed.Himwich@nasa.gov).
Notes for the correlator (WACO):
- A disk module may contain data of 1, 2, or possibly 3 observation
days. The disk modules have labels according to the sessions
being recorded.
- A session may be spread over 2 modules for one station and fit
on a single module for another station.
- The Int1 and Int2 Intensive sessions will be observed during CONT08. There
are no Int3 Intensive sessions scheduled. The correlation of the Int1
and Int2 sessions has precedence over CONT08 correlation.
- Five of the 15 CONT08 days are considered rapid turn-around sessions. These
R1 and R4 equivalents are to be correlated first. The equivalents are:
C0801 = R1, C0803 = R4, C0807 = R1, C0810 = R4, C0814 = R1.
- The accumulation period (AP) should be set to 3 sec.
=====================================================================
Table 2: Recording Groups and Module Usage Summary:
===================================================================
Hh Kk Mc Ny On Sv Tc Ts Wf Wz Zc Avg
===================================================================
C0801 1267 1594 779 1069 1028 661 2266 982 1373 762 472 1114
-----------------------------------------------------------
B D A B B A G B B A A
===================================================================
C0802 1163 1665 775 1039 962 638 2263 867 1393 801 485 1096
C0803 1110 1685 718 1059 1000 639 2152 975 1404 846 502 1099
-----------------------------------------------------------
2273 3350 1493 2098 1962 1277 4415 1842 2797 1647 987 2195
H H D D,B D B H D G D B
===================================================================
C0804 1110 1633 782 1035 960 639 2169 1012 1402 822 479 1095
C0805 1167 1596 744 1054 1034 638 2160 926 1397 896 502 1101
. ---------- . . --------------------------------
. 3229 1526 . . 1277 4329 1938 2799 1718 981 2196
. 2D D . . B H D G D B
======== . ========== . . ==================================
C0806 1150 1576 772 1012 1028 658 2105 965 1360 932 521 1098
C0807 1166 1591 761 1004 978 643 2090 941 1370 851 497 1081
-----------------------------------------------------------
4593 3167 1533 4105 4000 1301 4195 1906 2730 1783 1018 2179
H 2D D H G B H D G D B
===================================================================
C0808 1127 1555 786 992 1011 637 2131 952 1377 795 495 1078
C0809 1142 1563 759 999 998 640 2183 901 1363 845 497 1081
C0810 1152 1637 769 1003 1004 630 2080 964 1408 848 521 1092
-----------------------------------------------------------
3421 4755 2314 2994 3013 1907 6394 2817 4148 2488 1513 3251
H H G H G D H,A G G,A G D
===================================================================
C0811 1096 1544 737 1041 1005 636 2054 902 1388 812 519 1067
C0812 1151 1610 748 1025 1029 651 2086 993 1334 901 509 1094
. ---------- . . ----------------------------------
. 3154 1485 . . 1287 4140 1895 2722 1713 1028 2161
. 2D D . . B H D G D B
======== . ========== . . ==================================
C0813 1215 1634 786 1061 1047 628 2160 982 1319 927 491 1114
C0814 1124 1620 739 1036 1018 643 2186 897 1372 851 509 1090
C0815 1094 1611 746 1069 1026 627 2065 935 1425 827 514 1085
-----------------------------------------------------------
5680 4865 2271 5232 5125 1898 6411 2814 4116 2605 1514 3289
H H G H H D H,A G G,A G D
===================================================================
Module sizes: A ( 960 GB)
B (1440 GB)
D (2000 GB)
G (4000 GB)
H (6000 GB)
Notes:
- Example (recording group C0808,C0809,C0810 and station TIGO):
+ record session C0808 on the H module,
+ record session C0809 on the H module, and
+ record first part of session C0810 on the H module and the
remaining part on the A module.
- Suggestions for handling disk module changes are provided at the
end of this document.
- Tsukuba will record on K5 disks and then e-transfer to Haystack.
Haystack records data on listed Mark 5 modules.
- Each station has one or two spare modules alloted that shall be
used when a regular disk fails:
Hh H
Kk 2D
Mc G
Ny H
On G
Sv D
Tc H,A
Ts G
Wf G
Wz G
Zc D
- An "extra" disk is normally inserted once recording has started
on the last allocated disk for an experiment. This is done in case
the last allocated disk fills early. Normally this should be the
smallest available spare. However, if some other disk used in the
experiment has failed and filled prematurely, the station should
consider how much additional space is likely to be needed when
selecting the "extra" disk. Please inform the coordinating center
(ivscc@ivscc.gsfc.nasa.gov) whenever you use a spare.
=====================================================================
Recording mode
Name Code
GEOSX8N 8F
Recording mode setup for:
HARTRAO KOKEE MEDICINA NYALES20 ONSALA60 SVETLOE TIGOCONC TSUKUB32
WESTFORD WETTZELL
Mode Tot.Rate Tot.BandW #chan #bits Barrel
Mk341:1 506.368 Mbits 253.184 MHz 14 2 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
8.00 MHz 1 32(*1) 32 0.02
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 channels recorded per sub-pass
X S Total
19.780 11.868 31.648
Recording mode setup for:
ZELENCHK
Mode Tot.Rate Tot.BandW #chan #bits Barrel
Mk341:2 506.368 Mbits 253.184 MHz 14 2 NONE
Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed
8.00 MHz 1 16(*2) 32 0.01
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 channels recorded per sub-pass
X S Total
19.780 11.868 31.648
=====================================================================
===================
DISK MODULE CHANGES
===================
These experiments will require 1, 2, or 3 disk modules each. Stations
should follow the assigned list of modules 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 you may have to change
modules during some schedules, plan accordingly. Here are four suggestions
for handling the changes:
1) Mark module change times. Select the modules you will use for
each experiment, note their sizes, and then mark by hand the
approximate places in the schedule where each module is expected
to be full (you will have to estimate this when you start an experiment
with a partially filled module). This is the time when you should
expect to change a module. Mark by hand which bank will be changed
and which module will be inserted. You can use the DRUDG Option 5
listing for this purpose.
2) Change modules promptly. When a module is full, the FS will
automatically switch to the next one and put up a prompt window
saying that you should change the old one. It is good practice to
change the module as soon as it's called for because then the FS will
have a module to switch to in case the one being recorded to becomes
full prematurely. You should check periodically during the experiments
that the modules are filling at the expected rate. The window prompting
you to change the module will give both the VSN and bank that needs to
be changed. You should dismiss the window once the module has been changed.
3) 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. This can be done even when the FS
is still writing to log during the experiment. 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
complete information. 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 CONT08 has started.
4) 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 be 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).