Multichannel Systems MPA32I Manual - Manual (Page 23)

Pin Layout
17
7.2 Test Model Probe
Test signal IN: You can use the jumper to connect the signal input pin (Signal IN) to ground
(standard situation for a noise level test), or you can connect a data source, for example, a sine
wave generator to the input (and the ground of the test signal to the signal ground input) to test
the signal distribution. The input signal is distributed across all recording channels.
REF I N: The standard situation in an experiment should be that the reference electrode has
properties identical or close to the recording electrodes. You can remove the jumper to connect
the reference output of the test model probe to the same resistors as the recording channels to
mimic the experimental situation, or you can use the jumper to connect the reference output to
ground.
DC
i
4.7 M
Dynamic
i
330 k
Capacitanc 150 pF