Fluorolog-3 v. 2.2 (9 Aug 2002)
TRIAX operation with the Fluorolog
®
-3
14-39
Note:
To pre-
vent damage
to the knife-
edges, the
slits never
close com-
pletely. There-
fore some light
always enters.
Troubleshooting
Should there be a problem with the TRIAX spectrograph, check the following chart for
possible problems. Try the remedies listed on these pages before contacting Spex
®
Fluorescence Service.
Problem
Possible Cause
Remedy
Spectrometer is off.
Check AC outlet (mains), power switch, and
fuse.
Cables are improperly con-
nected.
Check external cable connections.
Internal cables are not con-
nected.
Check internal ribbon cables, and jumpers on
circuit boards.
Spectrograph does not re-
spond to any commands
Software is inappropriate.
Check that system software matches the hard-
ware.
Improper parameters used with
correct command.
Check that the failing command is valid, and
that parameters are within correct limits for that
function.
Spectrograph responds to
some commands, but not all
Software is inappropriate.
Exit DataMax. Check that the software matches
the hardware, especially device configuration.
Slit and wavelength drives
and accessories do not move
Bad electrical connection.
Test turret as follows:
1
Exit DataMax.
2
Disconnect power.
3
Remove top cover of TRIAX.
4
Gently move turret partway through its
range of movement.
5
Reconnect power.
6
Turret should automatically return to home
position.
7
Check control-cable connections and inter-
face.
Make sure all covers are in place.
Be sure that the are between the sample and the
entrance slit is enclosed and light-tight. Test by
blocking the entrance slit.
Check detector mounting and housing for light
leaks.
Background signal is too high
Light leak.
Test for stray light:
1
Start at detector, close exit and entrance
slits and shutters in order.
2
Be sure all openings and screw holes are
plugged.
3
Check that the cover, side, and baseplate fit
tightly.
4
In a dark room, shine small flashlight at a
suspicious part or joint, and observe de-
tected signal levels.
Signal is too noisy
Signal is too weak.
Try to increase signal strength at the detector.
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