10.6.6 Checking the Opto Interrupter

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

10.6.6 Checking the Opto Interrupter

Correct operation of the Opto Interrupter on the gas filter wheel can be confirmed by connecting an oscilloscope U6, Pin 11 on the Sync Demodulator board and comparing the waveform to Figure 10-1.The waveform should be symmetrical and 5 Volts peak to peak.

Figure 10-1: Opto Pickup Waveform

Figure 10-2: Detector Waveform

10-16

Page 110
Image 110
Teledyne 300M instruction manual Checking the Opto Interrupter, 1 Opto Pickup Waveform, 2 Detector Waveform, 10-16