General SET-UP Outline :
- Mount and cable PUEO
- Install Focam session (Jim)
- Check (not extensive) that communication is OK with
real-time computer and with Prolog. This may involve :
- Moving a mirror (e.g. tvm 1)
- Verify that real-time display works
- Adjust amplitude of the membrane mirror :
- Astar 1 15
- Turn ON PUEO's ISIT camera
- tvm 2
- set Gopt to 128 (Maintenance UI)
- Center Astar and WFS (superimpose the two extrafocal images)
- Set the tip-tilt channel 1 to 1 volt (Maintenance UI)
- Adjust the frequency (knob, front panel of WFS electronics)
in order to get a edge to edge deviation of 88 mm on the screen
- Put back in initial conditions (o Volt on TT, tvm 0, ISIT OFF)
- Adjust the phase of the lock in detection :
- Astar 1 15
- Flux goes to APDs, Astar rougthly centered
- Adjust phase (wheel with two hexa numbers, front panel of WFS
electronics) so that the analog display shows "zero" (flux are
balanced)
- Make sure we are using the right aosave.ao (the one taken in Feb)
- Close the loop to make sure that everything is allright (in particular,
check that no actuator goes to limit).
- Optionnaly, compute a "fresh" set of offset voltages
- Measure the best WFS focus position for each filter (jim knows)
Writen March 18, 1997 by F. Rigaut.