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Teledyne API Model 200A NO
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Analyzer Instruction Manual, 02246, Rev. G, DCN 5247
Table 5-5-20: RS-232 Calibration Examples
Action RS-232 Commands Comments
Zero Calibration C ZERO
C COMPUTE ZERO
C EXIT
Z/S valves switched to admit
zero gas. Zero cal in Single
Range mode.
Zero Calibration of low range -
AutoRange Enabled
C ZERO 1
C COMPUTE ZERO
C EXIT
Z/S valves switched to admit
zero gas. Zero calibration of
low range in Auto Range
mode.
Span Calibration of high range -
AutoRange Enabled
C SPAN 2
C COMPUTE SPAN
C EXIT
Z/S valves switched to admit
span gas. Span calibration of
high range in Auto Range
mode.
Zero Calibration with Dynamic
Calibration enabled
C ZERO
C EXIT
Z/S valves switched to admit
zero gas. Instrument is zero
calibrated if DYN CAL is
enabled.
Zero Calibration C ZERO
C EXIT
Z/S valves switched to admit
zero gas. Instrument zero is
just checked, but not changed.
Execute AutoCal Sequence #2 C ASEQ 2 Execute a predefined AutoCal
Sequence. Executes sequence
immediately, ignoring time and
date parameters.
Span Calibration Check C SPAN
C EXIT
Z/S valves switched to admit
span gas. Instrument span is
just checked, but not changed.
Whenever the analyzer starts or finishes an IZS calibration, it issues a status report to the RS-232
interface. If the RS-232 interface is in the normal mode, these reports will be sent. Otherwise,
they will be discarded. Table 5-19 shows the format of the text of the calibration messages. An
example of an actual sequence of calibration status messages is:
C DDD:HH:MM IIII START MULTI-POINT CALIBRATION
C DDD:HH:MM IIII NOX=xxxxx PPB NO=xxxxx PPB NO2=xxxxx PPB
C DDD:HH:MM IIII FINISH MULTI-POINT CALIBRATION
5-35
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