CAMMICE Operations

The following are e-mail messages regarding the operation of the CAMMICE instrument.
Most recent messages are at the top. Older messages are down below.

Date: Wed, 5 Mar 1997 13:07:35 -0800
From: "Patricia Lew"
Subject: Upcoming Mics RS Table Chan
To: "Cammice Team"
Precedence: bulk
Sender: cammice-team-request@nis.lanl.gov

Subject: Time: 12:54 PM
Upcoming Mics RS Table Change Date: 03/05/97

FYI:
The normal MICS rate scaler table will be changed between 065:05:00:00 and
065:05:45:00 (about an hour before the radiation belts). I will give you
exact execution times tomorrow. The complete change requires about 40 minutes
and contains two table calculations at 15 minutes a piece. During this time
data will not be transmitted by the DPU.

For details on the new "normal" MICS rate scaler table see the following:
ftp://leadbelly.lanl.gov/pub/CCR/AERO/mics_rate_scalers_v2_970228.gif

Happy Analyzing,
Patty Lew

Date: Wed, 29 Jan 1997 15:02:46 -0800
From: "Patricia Lew" <patricia_lew@qmail2.aero.org>
Subject: Cammice Command Lists
To: "Cammice Team" <cammice-team@lanl.gov>
Precedence: bulk
Sender: cammice-team-request@nis.lanl.gov

Subject: Time: 3:01 PM
Cammice Command Lists Date: 01/29/97

FYI:
There are updates for the MICS and HIT command summaries in the following
directory:
ftp://leadbelly.lanl.gov/pub/CCR/command_histories/.

The files are ASCII tab-delimited files and are titled: HitCmd_012697.Txt and
MicsCmd_012697.Txt. As the filenames indicate, the summaries are valid
through 1/26/97 (inclusive).

Questions regarding the summaries should be sent to
patricia_lew@qmail2.aero.org.
Patty Lew

Subject: Time: 9:52 AM
New Hit Sensor State Date: 01/29/97

FYI:
As per Ted's request the HIT sensor is now in the following mode as of
029:05:26:37:
Cal off, Pileup On, ABar=A, IgnoreA threshold, AntiC Off,
Mux 0, E' on, dE on, ABC Slope low, CBar=C, B/C=B, Bite 0

Patty

Subject: Time: 12:53 PM
HIT in new mode Date: 01/22/97

As per Ted's request the HIT sensor is now in the following mode as of
022:20:20:49.

Cal off, Pileup On, ABar=A, IgnoreA threshold, AntiC Off,
Mux 0, E' on, dE on, ABC Slope low, CBar=CBar, B/C=B, Bite 0

Patty

Subject: Time: 3:05 PM
Hit back on Date: 11/22/96

FYI:
With Jim looking at the MICS data while in the radiation belts, it appears
that the MICS boundary changes look good. Events were falling into RS0, RS9,
RS10, and RS11 (though very few in 9,10,11) We saw RS0 go up to 1005, RS9
from 1-3, RS10 from 1-5, and RS11 from 1-2.

MICS cross off was executed at 327:22:24:21. HIT was turned on at 22:26:06.

Bad news for HIT though. The rates were as follows:
HID5: 50-70
A0: 450559-466943
A1: 943-1119
B1: 15103 - 13516
C: 11-40
Rst: 11263 - 12031
Err: 3775-4198
Vld: 171
A2: 32
St: 19251-24063
A3: 32
A4: 32

I did get some information from Wainwright. As of 11/18/96 the sun angle was
at 113.9 degrees relative to the z axis. So with a nominal HIT 22 degrees
field of view, HIT may still be seeing the sun.

Patty

Subject: Time: 10:44 AM
Cammice commands Date: 11/18/96

FYI:
There are updates for the MICS and HIT command summaries in the following
directory:
ftp://leadbelly.lanl.gov/pub/CCR/command_histories/.

The files are ASCII tab-delimited files and are titled: HitCmd_111096.Txt and
MicsCmd_111096.Txt. As the filenames indicate, the summaries are valid
through 11/10/96 (inclusive).

Questions regarding the summaries should be sent to
patricia_lew@qmail2.aero.org.
Patty Lew

Ted, team:
The HIT/HDPU was turned off around 1948 UT on 11/9/96 and MICS was put in
cross mode.
This will give us time to evaluate some unusual outputs we have been getting.
Patty will put exact command times in the history file shewill be updating.
We had the POCC bring up the GSE and I verified that the MICS was indeed in
cross mode.

Team:
The MICS/MDPU is back on the air as of ~0400 UT 1/6/96. The stepping HV for
the ESA is limited to a maximum of step 24. There were some problems at higher
step levels so we will keep it in this mode. We are still analyzing what has
happened and will keep everyone informed. Thanks go to Stefano Livi for going
to Goddard and running the recovery process.
Regards, Joe Fennell

Dear fellows,

MICS is again operational!
It has been restarted today (Nov 6th, day 311) at about 4 AM UT.
During the restart procedure, a new "latch up" event was observed,
and the procedure was started anew. For safety reasons, I decided
to limit the HV at step 24 ("Normal mode"). During the next days,
Joe, Norm, Patty, and me will try to identify the causes of the
problem and to figure out counterreactions. Needless to say that
any comment/suggestion/contribution/idea will be most welcome!

Regards

Stefano

Team:
The MICS/MDPU had another episode last night (0920UT Day 310). This one
occurred when satellite was not being monitored so we have no information on
what happened until the tape recorded data is dumped. Patty Lew turned the
MDPU/MICS off and we plan to turn things back on later today. Hydra, again ,
had gone into an eprom write protect mode. The symptoms for MICS/MDPU were
the same. The DPU voltage monitor was at 4.5 volts and no TM was coming out.
Patty turned off the keep alive power to flush the RAM because if we power
cycled the DPU with keep-alive on the unit would come up in its previous state
with all high voltages on. We will keep you informed of what we learn and
what we are planning to do.
Regards, Joe F.

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