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The following diagram applies only when the optional Resisitve Resistive Sensor mezzanine board is in place.

Using the screw (SW1) on the mezzanine board, the OP7818 can be set to operate with a thermistor or resistive sensor. Note that with the mezzanine board in place, there can be no jumpers on pins for jumper array (J4) and SW2 and SW3 screws must be in the off position and switch SW4 is in Current mode (position I).

In Resisitive Resistive sensor mode, the screw must be turned to the left, to RTD.


The faceplate provides a DB37F connector (see “Connector Connector Pin Assignments” for details) and a series of status LEDs.


Product name


Part number


Product type

OP7000 back 16 Ain

Number of channels


Input modes

Voltage,  current  current or resistive sensor


Provided by OP7000

Maximum Current

±25 mA

Maximum voltage

±20 V


18.8 x 16.4 cm (7.4 in x 6.46 in)

I/O connector


Operating temperature

10 to 40 ºC (50 to 104ºF)

Storage temperature

-55 to 85ºC (-67 to 185ºF)

Relative humidity

10 to 90%, non condensing

Maximum altitude

2,000 m (6562 ft.)