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Operating Instructions
4.13.7.2. Optic Test
activated, PMT should be
Note
158
The optic test function tests the response of the PMT sensor by turning on an LED
located in the cooling block of the PMT (Fig. 10-15). The analyzer uses the light
emitted from the LED to test its photo-electronic subsystem, including the PMT and the
current to voltage converter on the pre-amplifier board. To make sure that the analyzer
measures only the light coming from the LED, the analyzer should be supplied with zero
air. The optic test should produce a PMT signal of about 2000±1000 mV. To activate
the electrical test press the following touchscreen button sequence.
SAMPLE
< TST TST > CAL
SETUP X.X
CFG DAS RNGE PASS CLK
SETUP X.X
COMM VARS
SETUP X.X
DIAG
DIAG
PREV NEXT
DIAG OPTIC
<TST TST>
While the optic test is
DIAG ELEC
2000 mV ± 1000 mV
<TST TST>
This is a coarse test for functionality and not an accurate calibration tool. The
resulting PMT signal can vary significantly over time and also changes with low-
level calibration.
Teledyne API - Model T200H/T200M Operation Manual
RANGE = 500.0 PPB
PRIMARY SETUP MENU
MORE
SECONDARY SETUP MENU
DIAG
ALRM
ENTER DIAG PASS: 818
8
1
8
SIGNAL I / O
NEXT
Press NEXT until...
OPTIC TEST
A1:NXCNC1=100PPM
Press TST until...
PMT = 2751 MV
NOX=X.X
SETUP
EXIT
EXIT
ENTR
EXIT
ENTR EXIT
ENTR
EXIT
NOX=XXX.X
EXIT
NOX=X.X
EXIT
07270D DCN7141
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