Teledyne GFC-7001E - Trace CO Analyzer - Manual (Page 295)

Troubleshooting & Repair Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 295
13.5.7.3. Analog Outputs: Current Loop
To verify that the analog outputs with the optional current mode output are working properly, connect a 250 ohm
resistor across the outputs and use a voltmeter to measure the output as described in Section 7.4.3.4 and then
perform an analog output step test as described in Section 13.5.7.2.
For each step the output should be within 1% of the nominal value listed in the table below.
Table 13-11: Analog Output Test Function - Nominal Values Voltage Outputs
OUTPUT RANGE
2 -20 4 -20
NOMINAL OUTPUT VALUES
STEP % CURRENT V(250 OHMS) CURRENT V(250 OHMS)
1 0 2 mA 0.5V 4 1
2 20 5.6 1.4 7.2 1.8
3 40 9.2 2.3 10.4 2.6
4 60 12.8 3.2 13.6 3.4
5 80 16.4 4.1 16.8 4.2
6 100 20 5 20 5