Multichannel Systems PGA Manual User Manual
Page 13
First Use of the PGA
9
Warning: Do not mismatch the polarity of the power supply. False connection may damage
the device.
Important: Make sure that the reference input is always connected, because signals applied to
the reference input are subtracted from the recording signal input channels. If the reference
input is unconnected or connected to an electrode in an active area (for example, it sees signals
of interest), this will either lead to signal loss or to a very high noise level. Connect the reference
input to the ground of the setup when you are not using a reference. For more information,
please see
Differential Amplifier and Noise Reduction
.
1. Place the PGA on a stable surface, where the air can circulate freely and the PGA is not exposed
to direct sunlight.
2.
Connect the input signal source, for example, a SC8x8 or SC2x32 signal collector connected
to miniature preamplifiers, to the 68-pin MCS standard input connector of the PGA.
3. Connect the 68-pin MCS standard output connector to the MC_Card input of the data acquisition
computer by a 68-pin MCS standard cable. Make sure the IPS10W as a power supply source is
properly installed to the data acquisition computer. Check the output power if you are in doubt.
For more information, please see the ME-Systems Manual.
4. If the data acquisition computer has no IPS10W, connect a suitable power supply, for example
a PS40W, to the 4 mm power input sockets. An internal power supply transforms the supply
voltage into the internal supply voltage.
5. Connect the USB connector to a free USB 1.1 port of the computer with a Type A - B USB cable.
The connector on the PGA side is type B; the connector on the computer side is type A.
The computer connection is necessary for programming the PGA, but not for operating it.
6. Switch on the PGA. The LEDs on the rear panel must light up, otherwise the power is insufficient.
7. Install the PGA-Control program provided together with the PGA to the connected computer.
The PGA driver is installed automatically as well.