Kipp & Zonen Brewer Mk III Operator's Manual page 47

SH Slit Mask (shutter) Motor Timing Test
Normally a factory test, the SH command is used to determine the timing constant used in
the control of the slit mask motor.
See Appendix F.
SI Solar Siting
Brewer observations using the solar disc as the radiation source require that the Zenith
Prism of the instrument be pointed very accurately toward the sun. The SI command is used
in the initial set-up of the instrument and for subsequent checking of pointing accuracy.
After the date, time, and station co-ordinates have been set accurately, a set of four controls
on the front of the instrument are used to introduce 'Horizon' and 'North' corrections which
compensate for any offsets that may occur. These corrections are saved and used by the
software in future pointing calculations.
See also Section 7.
SIM Lunar Siting
Brewer observations using the lunar disc as the radiation source require that the input
window of the instrument be pointed very accurately toward the moon. (Normally the SI
command is used if at all possible, as a siting using the moon is much more difficult task
than a siting using the sun.) The SIM command is used in the initial set-up of the instrument
and for subsequent checking of pointing accuracy in the event that the SI command cannot
be used.
After the date, time, and station co-ordinates have been set accurately, a set of four controls
on the front of the instrument are used to introduce 'Horizon' and 'North' corrections which
compensate for any offsets that may occur. These corrections are saved and used by the
software in future pointing calculations.
See also Section 7.
SK Scheduled Operation
SK allows an operating schedule, created by the SE command to be run for the current day.
At the end of the schedule, the program returns to the main menu and must be restarted the
next day.
See also Section 8, and SE and SKC.
SKC Continuous (scheduled) Operation
SKC allows an operating schedule, created by the SE command, to be run continuously -
that is, at the end of the local day a set of summary records is produced (see ED), and the
schedule waits for the beginning of the next day and the schedule starts again.
See also Section 8, and the SE and SK commands.
SL Standard Lamp Test
SL initiates the most important quality assurance test in the Brewer commend set. This test
essentially performs an ozone measurement using an internal quartz-halogen lamp as the
source. The test should be run at least at the start and end of the day and should be
preceded by an hp and an hg, The values of R5, R6, and F1 should be monitored carefully,
and any changes should be noted and investigated.
For the SL test, the iris is opened, FW#1 is set to position 1, and FW#2 is set to position 0.
See also Appendix F for details on the test.
SLSUM Standard Lamp Summary
SLSUM reads the daily Data (B) file and prints out the 'summary' results of the day's SL
tests In addition entries are made in the SLOAVG.nnn file.
The SLSUM command is usually invoked as part of the ED command.
See Appendix A for an example of the SL average files.
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MKIII OPERATOR'S MANUAL