The white light source is a subrack unit containing two Ocean Optics HL-2000-HP-232 halogen light sources and a Moxa NPort 5450
serial device server. Serial ports 1&2 are used to control the light sources, while the remaining ports 3&4 are available on the rear side of the subrack.
This device is common to both sides of the telescope: in the future the 2 light sources will be used for DX and SX reflection on-axis sources. At the moment both sources are used on the DX side, one in reflection and one in transmission through the hologram
A spare unit with bulb exist and is stored Argos3U
|| Swapped the so-called DX and SX sources: now SX source is in reflection through CalUnitSystemDx, while DX source is in transmission through the hologram.
|| Swapped back: now DX source is in reflection through CalUnitSystemDx, while SX source is in transmission through the hologram.
|| SX light source (#1) bulb died. Unit was replaced with spare. Bulb was replaced in the unit taken out and left as spare.
|| The DX unit is not stable. It continuously reset to the default OFF state. This might be related to low temperature. After redirecting the cooling flow it worked again.
Current known config
copy and paste from above when config is changed
Use of the unit is described in this topic
General software instructions can be found in MPIA
wiki page: https://svn.mpia.de/trac/gulli/argos/wiki/whiteLight
A user manual
can be found in the LBT
CAN archive: http://abell.as.arizona.edu/~hill/xlbt/lbtg/653g921a.pdf
The subrack schematics are also in the LBT
The Ocean Optics HL-2000-HP-232 light source manual is here: http://abell.as.arizona.edu/~hill/xlbt/lbtg/653g922a.pdf
decribe how to repair or replace a broken part
List of components devices