Teledyne T100 Manuel D’Utilisation

Page de 422
Teledyne API - T100 UV Fluorescence SO2 Analyzer  
Troubleshooting & Service 
 
 
253 
12.6.7.2. ANALOG OUTPUT VOLTAGES 
To verify that the analog outputs are working properly, connect a voltmeter to the output 
in question and perform an analog output step test as described in Section 5.9.2. 
For each of the steps, taking into account any offset that may have been programmed 
into the channel (refer to Section 5.9.3.4), the output should be within 1% of the nominal 
value listed in the Table 11-7 except for the 0% step, which should be within 2-3 mV. If 
one or more of the steps is outside of this range, a failure of one or both D/A converters 
and their associated circuitry on the motherboard is likely. 
Table 12-7: Analog Output Test Function - Nominal Values 
FULL SCALE OUTPUT VOLTAGE 
100MV 
1V 
5V 
10V
*
 
STEP 
NOMINAL OUTPUT VOLTAGE 
1 0 0 
mV 
0 0 0 
2 20 20 
mV 
0.2 
1 2 
3 40 40 
mV 
0.4 
2 4 
4 60 60 
mV 
0.6 
3 6 
5 80 80 
mV 
0.8 
4 8 
6 100 
100 
mV 
1.0 5 10 
Increase the Analog Out (AOUT) Cal Limits in the DIAG>Analog I/O Config menu. 
12.6.7.3. STATUS OUTPUTS 
The procedure below can be used to test the Status outputs. 
1.  Connect a cable jumper between the “-“ pin and the “” pin on the status output 
connector. 
2. Connect 
1000 
Ω resistor between the +5 V and the pin for the status output that is 
being tested. 
Table 12-8: Status Outputs Check Pin Out 
PIN 
(left to right) 
STATUS 
1 System 
Ok 
2 Conc 
Valid 
3 High 
Range 
4 Zero 
Cal 
5 Span 
Cal 
6 Diag 
Mode 
7 Spare 
8 Spare 
 
3.  Connect a voltmeter between the “-“ pin and the pin of the output being tested (refer 
4. Under the DIAG   SIGNAL I/O menu (refer to Section 5.9.1), scroll through the 
inputs and outputs until you get to the output in question. Alternately turn on and off 
the output noting the voltage on the voltmeter, it should vary between 0 volts for ON 
and 5 volts for OFF. 
06807C DCN6650