Appendix f factory tests – Kipp&Zonen Brewer MkIII User Manual
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MKIII OPERATOR’S MANUAL
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APPENDIX F
FACTORY TESTS
SETUP AND CALIBRATION TESTS
The tests and calibration techniques described here are essentially those performed by the factory
before the Brewer Spectrophotometer is shipped. [Refer to the Final Test Record for the set of test
results, graphs, and derived constants for a specific instrument.] Some of these tests (HV, SH)
would only be performed by the user after repair or replacement of one or more of the instrument's
optical or mechanical components. In contrast, the HG (mercury-line calibration) and SL (standard
lamp) tests should be performed at least once per day. The remaining tests should be carried out
at approximately monthly intervals to verify correct instrument performance.
The order in which these tests are described is significant. Tests which follow later in the sequence
assume that the earlier tests and calibrations have been successful. A complete instrument
recalibration (a task not to be undertaken lightly) would therefore follow the ordering implied in this
section.
Table F-1 summarizes the settings of the Brewer’s controllable elements for each of the setup
tests. The software will automatically set the elements to where they should be for a specific test.
All of the following tests assume that the spectrometer is in focus and properly aligned in
accordance with the Optical Frame Alignment document.
Table F.1: Settings for Brewer Tests
Test Wave-
Length
Slitmask
Motor
Position
Std Lamp Hg
Lamp
Filter
Wheel 1
Filter
Wheel 2
Iris
Prism
Azimuth
Tracker
DT
Ref
3,5,7
On
Off
1
0,1
Open 180°
N/A
HG Estab Ref 0
Off
On
1
0
Open 180°
N/A
HV Ref
1,2
On
Off
1
0
Open 180°
N/A
RS Ref
0-7
On
Off
1
0
Open 180°
N/A
SC Ref
0-6
Off
Off
1
0,1,2
Close Point at sun Point at
sun
SH Ref
0-2
On
Off
1
0
Open 180°
N/A
SL
Ref
1-6
On
Off
1
0
Open 180°
N/A
SR N/A
N/A
Off
Off
N/A
N/A
N/A
N/A
0°-360°
SH SHUTTER-MOTOR (SLITMASK MOTOR) TIMING TEST
The SH test determines the optimum value for the timing constant used in the control of the
slitmask motor.
Measurements of the Dark Count, and light intensity of the tungsten-halogen (standard) lamp are
taken through the HG and Wavelength 1 slits for a range of motor-delay constants. Observations
are typically made over a range of 20 different values for the delay constant.
APPENDIX F FACTORY TESTS