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Values in WinDaq are not correct when using DI-8B42-01 Modules

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Symptoms

Cause

Resolution

Place a 0.02µF capacitor across In+ and Ex+ on channels containing DI-8B42-01 modules

Applies To

Symptoms

WinDaq displays values that are not consistent with the input on channels containing DI-8B42-01 modules.

Cause

A design issue involving the DI-8B42 module that can cause the amplifier to oscillate when used with certain types of transmitters.

Resolution

To resolve these issues follow the steps below.

Place a 0.02µF capacitor across In+ and Ex+ on channels containing DI-8B42-01 modules.

Place the capacitor as shown below:

Applies To

DI-718B(x), DI-788 and DI-78B input expanders containing DI-8B42-01 modules.