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I/O Port Cable
I/O Port Cable Pinouts for Oxygen Sensor

This is only documentation of the unterminated I/O port cable connection information for use with a single oxygen sensor. This configuration will work with the VR3, Pursuit, and Explorer dive computers. The unterminated cable alone is NOT a complete solution because we do not supply any type of generic cable sealing gland, sensor mount or sensor connector. These must be provided by the designer of a complete custom O2 monitoring solution.

Fischer plug # SC 103 A057
Inside the male connector of the cable you will see a 'half circle' key (i.e. thicker side). Note the pinouts are mirror imaged for the plug vs the receptacle, so best to use the key as your landmark for identifying the correct pins.

Example Cable In the four conductor shielded cable,
Fischer Plug Pin 1 (center) is the solid blue or green conductor.
Fischer Plug Pin 3 is the solid white conductor and

Other conductors in the cable are unused for a single sensor O2 monitoring application and left unterminated.

Molex Part 22-01-3037
with polarizing rib On the female Molex Connector
The solid white conductor is Circuit 1 and
The solid blue or greenconductor is Circuit 3
Take care not to confuse solid color conductors in the cable with striped conductors.

R-22 type O2 Sensor On the Oxygen Sensor
Circuit 1 (white) connects to positive pin and
Circuit 3 (blue or green) connects to negative pin.
Once the cable is assembled, and an O2 sensor connected, on the male end of the Fischer connector you should be able to measure approximately 10mv (in air) between pin 3 (positive) and the center pin 1 (negative).

© by Fill Express, LLC

I/O Port Cable	I/O Port Cable Pinouts for Oxygen Sensor This is only documentation of the unterminated I/O port cable connection information for use with a single oxygen sensor. This configuration will work with the VR3, Pursuit, and Explorer dive computers. The unterminated cable alone is NOT a complete solution because we do not supply any type of generic cable sealing gland, sensor mount or sensor connector. These must be provided by the designer of a complete custom O2 monitoring solution.
Fischer plug # SC 103 A057	Inside the male connector of the cable you will see a 'half circle' key (i.e. thicker side). Note the pinouts are mirror imaged for the plug vs the receptacle, so best to use the key as your landmark for identifying the correct pins.
Example Cable	In the four conductor shielded cable, Fischer Plug Pin 1 (center) is the solid blue or green conductor. Fischer Plug Pin 3 is the solid white conductor and Other conductors in the cable are unused for a single sensor O2 monitoring application and left unterminated.
Molex Part 22-01-3037 with polarizing rib	On the female Molex Connector The solid white conductor is Circuit 1 and The solid blue or greenconductor is Circuit 3 Take care not to confuse solid color conductors in the cable with striped conductors.
R-22 type O2 Sensor	On the Oxygen Sensor Circuit 1 (white) connects to positive pin and Circuit 3 (blue or green) connects to negative pin. Once the cable is assembled, and an O2 sensor connected, on the male end of the Fischer connector you should be able to measure approximately 10mv (in air) between pin 3 (positive) and the center pin 1 (negative).