Readings drift in scxi-1531 module

[ESchell]

When reading PCB Piezoelectronic accelerometers using
the scxi-1531 module, the DC baseline of the reading
drifts around. The accel has no DC response and the
module is AC coupled. I can solve this by post-
processing the data, but I'd prefer to solve it at
the system software or hardware level.

[George M.]

Hi,

Your question is best answered in an online Knowledge Base. Following the steps in this Knowledge Base should resolve your issue. Have a GREAT DAY!

[ESchell]

Ok. The knowledgebase info is good. BUT the scxi
module in question is the 1531 accelerometer input
module. It is designed to connect to ICP
accelerometers that are always AC coupled, so I would
expect that this problem would have been accounted
for in the design of the module. The recommendation
to install shunt resistors to ground the DC component
is a problem because there is no terminal block with
this module (where it would be easy to install extra
components).