Teledyne API Model 401 O
3
Photometric Calibrator Instruction Manual, 01124, Rev. J1
1.6 Electrical And Pneumatic Connections
1.6.1 Electrical Connections
Output #1 Ozone concentration - chart recorder
Output #2 Ozone concentration - DAS
Output #3 Test function analog output
Input #4 Zero valve request
Input #5 Span valve request
Input #6 N/C
There are 2 six-pin connector strips on the rear panel shown in Figure 1-2. The pins are divided
into 3-plus/minus pairs and have the functions shown above.
Outputs 1 and 2 have identical signals and electrical characteristics. Output 3 is the same as 1
and 2 electrically, but has analog TEST function signals routed to it. See Diagnostics in Section
5 for details.
1.6.2 RS-232
The RS-232 connection is a male 9-pin D-sub connector.
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