npi PA-2S

The PA-2S is designed to amplify small bio-electrical signals. Two channels are available and can be used independently from each other in AC or DC mode. DC offsets can be compensated either by the using the OFFSET controls (coarse and fine) or they can be eliminated using the AC position of the input switches. The inputs and outputs are BNC connectors.

Input and output configurations are selectable. The PA-2S can be connected internally to other modules of the EPMS-07 system, e.g. to one channel of an EXT-08, to a DPA-2F or to an INT-20M module. Both INPUT and OUTPUT signals can be linked internally to other EPMS modules. The LC Display shows which amplifier / channel is used (see below) and indicates if the linear region of the amplifier is exceeded.

Specification

INPUT RANGE:  ±12 V     INPUT IMPEDANCE:  1 MΩ

INPUT CAPACITANCE: 30 pF

AC COUPLING AT INPUT: corner frequency of 0.3 Hz (if AC/0/DC-switch at BNC connector is switched to AC)

OFFSET COMPENSATION:  ±1 V (coarse) or ±100 mV (fine)

GAIN: rotary-switch, OFF-10-20-50-100-200-500-1000

OVERLOAD: starting to light up at ±10 V

OUTPUT: impedance 250 Ω, max ±12 V, short circuit protected

DIMENSIONS: front panel 12 HP (60.6 mm) x 3U (128,5 mm), 175 mm deep.