Teledyne GFC7001T User Manual download pdf (Page 277)

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Troubleshooting and ServiceTeledyne API – Model T300/T300M CO Analyzer

Teledyne Analytical Instruments 277

Table 12-10: Analog Output Test Function - Nominal Values Voltage Outputs

FULL SCALE OUTPUT OF VOLTAGE RANGE

(see Section 5.9.3.1)

100MV 1V 5V 10V

STEP % NOMINAL OUTPUT VOLTAGE

1 0 0 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

For each of the steps the output should be within 1% of the nominal value listed in the

table below except for the 0% step, which should be within 0mV ±2 mV. Make sure

you take into account any offset that may have been programmed into channel (see

Section 5.9.3.9).

If one or more of the steps fails to be within these ranges, it is likely that there has been

a failure of either or both of the DACs and their associated circuitry on the motherboard.

To perform the test connect a voltmeter to the output in question and perform an analog

output step test as follows:

1 2 ... 272 273 274 275 276 277 278 279 280 281 282 ... 325 326

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Teledyne GFC7001T User Manual Page 277

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