Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 164)

Model 9110TH NOx Analyzer Operating Instructions
Teledyne Analytical Instruments 144
4.13.7.3. Electrical Test
The electrical test function creates a current, which substitutes 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 the following buttons:
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL
SETUP
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP X.X SECONDARY SETUP MENU
COMM VARS DIAG EXIT
DIAG SIGNAL I / O
NEXT ENTR EXIT
DIAG ELEC A1:NXCNC1=100PPM NOX=XXX.X
<TST TST>
EXIT
Press NEXT until…
DIAG ELECTRICAL TEST
PREV NEXT ENTR EXIT
Press TST until…
DIAG ELEC PMT = 1732 MV NOX=X.X
<TST TST> EXIT
While the electrical test is
activated, PMT should equal:
2000 mV ± 1000 mV
SETUP X.X ENTER DIAG PASS: 818
8 1 8
ENTR EXIT