64-Channel System  Programmable via RS-232

The 64 channel programmable gain main amplifier (PGMA-64) was designed especially for amplification of neuronal signals.
 
The PGMA-64 has 64 amplifier channels with ac-coupled differential input stages on each channel. Each of the 64 channels has a bandpass filter characteristic. The cut-off frequencies of this bandpass filters can be adapted to the requirements of our customers. (eg. 0.06Hz - 15kHz).

Each channel has a variable gain. The gain can be selected via rotary switch at the front panel and is displayed on a LC-display. Furthermore it is possible to select a gain for each of the 64 channels via software interface on a personal computer.  In this case the gain factor is displayed on the PC monitor.
It is possible to adjust gain values of 5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000 (±1,5%).
The PGMA-64 is a very low noise main amplifier system.