Dark Calibration Test - Teledyne 300E Instruction Manual

Model 300E Carbon Monoxide Analyzer
Instruction Manual

6.6.5. Dark Calibration Test

The Dark Calibration Test interrupts the signal path between the IR Photo-Detector
and the remainder of the Sync/Demod Board circuitry. This allows the instrument
to compensate for any voltage levels inherent in the Sync/Demod circuitry that
might effect the calculation of CO concentration. Performing this calibration returns
two offset voltages, One for CO MEAS and on for CO REF that are automatically
added to the CPU's calculation routine. The two offset voltages from the last
calibration procedure may be reviewed by the user via the front panel display.
To activate the Dark Calibration procedure or review the results of a previous
calibration, press:
Electric offset for Reference signal
DIAG DARK
Electric offset for Measurement signal
DIAG DARK
P/N 04288 REV: A
Exit at Any
Time to Return
to main the
SETUP Menu
DIAG
PREV
DIAG DARK
REF DARK OFFSET: 0.0 mV
EXIT
MEAS DARK OFFSET: 0.0 mV
EXIT
SAMPLE RANGE = 50.0 PPM
< TST TST > CAL
SETUP C.3
CFG DAS RNGE PASS CLK MORE
SETUP C.3
COMM VARS DIAG HALT
SETUP C.3 ENTER DIAG PASS: 818
ENTR
8 1 8
DIAG SIGNAL I / O
NEXT ENTR
Repeat Pressing NEXT unti . . .
DARK CALIBRATION
ENTR
NEXT
CO DARK CALIBRATION
VIEW CAL
Calibration runs automaitcally
DIAG DARK DARK CAL 1% COMPLETE
DIAG DARK DARK CALIBRATION ABORTED
Operating Instructions
CO =
SETUP
EXIT
EXIT
EXIT
EXIT
EXIT
Exit returns
to the
EXIT
previous menu
Display
tracks %
complete
EXIT
EXIT
85