Hello,
I am running a test with two accelerometers to measure vibration in a cantilever.
I am using the SCB-68 connector block. The accels tie in to the connector block....1 line has signal, the other is a ground. I have one accel tied in to Channel 0 and the other tied in to Channel 1.
When I run the test, I get the impulse spike from the accel on the hammer. The hammer has an accel in it and is used to impart a force onto the beam. The other accel is mounted on the beam and it provides the typical transient response curve. So far, so good...
The problem, however, is that the curve (when there are no inputs) is not flat, but rises slightly, as if the units are not grounded properly.
Has anyone seen this or offer a suggestion? I believe all the connections are set up properly.
Thanks!