October 30, 1997

17
sound Togglefancy sounds
Qcdcomwill use distinctive sounds for various operations. If you don’t want to listen
to them you canturn them off with the sound command.
synch “Ping”the DSP by sending it data and asking it to send it back. This is useful
to check to see whether the controller is alive and receiving commands properly from
qcdcom, or if the electronics may need a hardware reset.
wf file Write FITS file
Qcdcom reads out the array into memory,and maintains the image there. The wf
command puts together a FITS header for the image and writes it to a disk file. If the
write fails (for example because the disk is full) wf w ill abort, but the program will keep
thedata in memory and you can save your data after rectifying the problem that prevented
thewrite.
8.3 Diagnostic commands
These commands are for diagnostic purposes only, and should not be used for normal observing.
They include commands to test the data link an d provide direct access to the DSP computer.
hall nloop Read Hall sensors
read the Hall effect sensors nloop times . The filter wheel 1 sens or is displayed, and
dependingon the position of the switch, either the pupil or filter wheel 2 sensor. This is
usefulwhen adusting the offset levelof the amplifiers between warm and cold conditions
to get the sensors withinthe rangeof the A/D’s.
diag rm M:addr -addr Read DSP mem
rm reads the P:, X:, or Y: memory of the DSP chi p. All in hex (alas?).
diag wm M:Xaddr Xval Write DSPmem
rm writes values to the P:, X:, or Y:memory of the DSP chip. Also in hex (also
alas?).
diag ii Re-init I/O
ii reinitializes the I/O with the parallel interface and fiber-opticsparallel interface
electronics.
diag ic Init camera
ic instructs the DSP cpu to reload its memory from ROM.This has the effect of
destroyingany downloaded code and replacing it with the basic monitor program which
has code for a different detector.
diag oc cmd Issue a command to the DSP interpreter
oc sends a three letter mnemonic command to the DSP cpu. Most of the useful
commands are sent by various qcdcomcommands automatically, but some commands
can only be sent via oc.