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Troubleshooting & Service
Teledyne API
– T200 NO/NO2/NOx Analyzer Operation Manual
266
12.7.12.2. ELECTRICAL TEST
The electrical test function creates a current, which is substituted for the PMT signal and
feeds it into the preamplifier board.
This signal is generated by circuitry on the pre-amplifier board itself and tests the
filtering and amplification functions of that assembly along with the A/D converter on
the motherboard.
It does not test the PMT itself.
The electrical test should produce a PMT signal of about 2000 ±1000 mV.
To activate the electrical test, press:
Concentration display
continuously cycles
through all gasses.
SAMPLE
RANGE=500.0 PPB NOX= XXXX
<TST
TST>
CAL
SETUP
SETUP X.X
SECONDARY SETUP MENU
COMM VARS
DIAG
EXIT
SETUP X.X
PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK
MORE
EXIT
DIAG
SIGNAL I/O
PREV
NEXT
ENTR EXIT
SETUP X.X
ENTER PASSWORD
8
1
8
ENTR
EXIT
Continue pressing NEXT until ...
DIAG OPTIC
ELECTRICAL TEST
PREV NEXT
ENTR
EXIT
Continue pressing <TST or TST> until ...
SAMPLE
PMT=2750 MV NOX= XXXX
<TST TST> CAL
SETUP
DIAG ELEC
PMT=2750 MV NOX= XXXX
<TST TST> CAL
EXIT
While the ETEST is
active PMT should =
2000 mv ± 1000mv
06858E DCN7057
Summary of Contents for T200
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