Multichannel Systems MPA32I Manual - Manual (Page 22)

32-Channel Miniature Preamplifier Manual
16
7 Pin Layout
7.1 Power Supply
Supply voltage is applied to the output connector pins 19 and 37. The voltage source should
supply a stable noise-free voltage. Do not exceed the maximum voltage.
Pin 19: –3 V to –8 V
Pin 37: +3 V to +8 V
Warning: Do not mismatch the polarity of the power supply. A false connection may damage
the unit.
Input Connector
This illustration shows the pin layout viewed from the front, with the case screws upside down.
The two reference inputs are used for connecting a reference electrode. Both inputs are equal,
so it does not matter which of the two inputs is used. If both are used, the mean of both
reference signals is used as reference.
Output Connector
The signal ground is connected to the ground of the amplifier. The signal ground is used as
the reference for the following filter amplifier.