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When satisfied after one or two adjustment sequences have been
carried out that an acceptable throughput energy has been established,
the front cover plate (5) can be repositioned onto the optical unit.
For some spectrometer configurations, if the Benchmark™ baseplate is
mounted on a rail or is movable in the spectrometer, further
improvements may be possible by adjusting the position of the Quest.
Firmly secure the Benchmark™ baseplate with the Quest Accessory into
this new position before use.
Note:
In some spectrometers it may be necessary to remove the Quest
ATR optical unit before securing the baseplate. Where this is the case,
ensure that the Benchmark™ baseplate does not move when removing
the Quest ATR optical unit.
6.4. Procedure to Follow from Any Accidental Mis-
Alignment
If a mistake is made during the alignment procedure and no signal from
the detector can be obtained, then it may be possible to recover the
situation by making a rough
visual
alignment of the mirror optics M1,
M3, and M6. This will allow enough energy to reach the detector for the
alignment procedure described above to be followed.
Note:
The following procedure should also be used if no energy is
observed at the detector on installation.
1. Ensure the fault is with your Quest unit by removing the accessory
and checking for a signal to show that the spectrometer is functioning
correctly (consult Spectrometer manual/dealer for more information).
2. Remove the
Benchmark™
baseplate, front cover plate (5) and any
puck assembly from the top of the optical unit.
3. Using the 2.5 mm ball driver tool in the screws (8), (10) and (12),
adjust all three mirrors M1, M3 and M6 ONLY for their angle of tilt
such that these mirror surfaces are
normal
(i.e. at a 90° right angle)
with relation to the
back plane
of the main mirror mount frame
assembly.
