Back to main menu
KNOWN PROBLEMS AND BUGS (JTR 06 DEC 2002)
- XUI PROBLEMS
- DV PROBLEMS
- SYSTEM FREEZES
Frequency of occurence:
COMMON: several times per night
OCCASIONAL: once per night
RARE: once per run
- No response to GO
Integrations occasionally need to be aborted to correct a setting (eg.
forgetting to turn AUTOSAVE ON). This is done by clicking the red STOP
button next to the green GO button at the top of the XUI screen. When
the integration is restarted occasionally there is no response to clicking
the GO button ie. the status bar remains green and no integration in
progress "Busy... % time left" message appears, even after clicking on
GO several times. This is fixed by running the "array_init" macro on
bigdog. Similarly for guidedog. OCCASIONAL.
- Integration fails to finish
The most likely cause is that the telescope daemon has died.
The solution is to ask the operator to check and restart the
- Calibration macro fails to finish or hangs up
The most likely cause is that a GO error has occured (see 1),
probably because a STOP was used to end an integration early. When
STOP is used the exit is sometimes ungraceful and the array needs to
be reset. Abort the macro by clicking on the STOP button in the MACRO
window followed by the STOP button next to the GO button. Fix the GO
error by running the "array_init" macro on bigdog. Before restarting the
calibration macro make sure that all the lamps are off and the cal box
mirror is out. RARE.
Another possible cause is an error on the IN/OUT (cal box) mirror
(LMP/MIR/SH icon shows red ERROR message). Abort the macro by clicking
on the STOP button in the MACRO followed by the STOP button next to
the GO button. Fix by initialsing the mirror in the SETUP window.
Before restarting the calibration macro make sure that all the lamps
are off and the cal box mirror is out. VERY RARE.
Very rarely communication between XUI and the cal box can freeze causing
the LMP/MIR/SH icon to report a red ERROR message. To check this have the
operator 'ping hotdog'. If hotdog is not responding ask the operator to
check the CAT5 cables and remote AC power switches to the cal box. VERY
- The spectrograph focus mechanism fails to initialise, AFOCUS "Error"
The spectrograph focus mechanism takes two AFOCUS.INITs to initialise. BUG.
(Not something an observer will normally need to do.)
- Mechanism shows "Error" following a commandered move. Click on mechanism
init icon in SETUP menu (eg. "CalMir.Init"). VERY RARE.
Back to the top
- No A-B autmatic subtraction
When doing many cycles of A-B pairs (ABBAABBAABBA....) DV is supposed to
automatically display the latest (buffer C=) A-B pair. For reasons unknown
the auto update only works intermittently. The work-around is to update
manually by executing c=a-b in the DV MATH window. BUG.
Back to the top
- No responce from XUI and/or DV
If there are no indications of other problems such as above (GO hangs, mechanism
errors, or daemon hangs), and you can get no response from the XUI or DV, first
try restarting the ICs. If the screens on stefan have completely frozen then
the problem is probably with the system. As a last resort the TO can reboot
bigdog or/and guidedog. Follow the instructions in "SpeX statup and shutdown
Back to the top