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Bioelectric Signal Amplifier modules

 MAPM

Monophasic Action Potential Module type 703 

The MAP module Type 703 is used for capturing and amplifying monophasic action potentials (MAPs). It has to be connected to special MAP electrodes. This module incorporates isolated input amplifiers in order to avoid hum interference. In this way the inputs are isolated electrically from the output circuits and from the housing.
The output voltages of the amplified MAP signals can be switched with jumpers to the PLUGSYS system bus. From the system bus they can be picked off by a ROM module (Recorder Output Module, e.g. ROM-DL) for direct recording or for data acquisition by computer.
A square-wave calibration generator with a 10 mV amplitude is incorporated for calibrating the amplitudes.
Inputs: A special connection box is recommended for connecting the MAP electrodes, with separate switch-off facility for the individual channels. The connection box has to be placed close to the electrodes so that the unscreened electrode leads can be kept as short as possible. The box is not part of the module and has to be ordered separately.

Description

Amplifier type  DC amplifier with automatic zeroing, 6 channels  
Input circuit differential inputs, isolated (floating input), isolating voltage 200 V DC max. 
Input impedance when switched on (INPUT ON): 1010 Ohm
when switched off (INPUT OFF): 5000 Ohm approx.
 
Common mode suppression better than 1 in 50 000 at 50 Hz 
Zeroing voltage range ±200 mV referred to the particular input resolution: 0.1mV 
Filter low-pass filter 1 kHz, 2 kHz and 5 kHz 
Gain setting x0.5:    100
setting x1:       200
setting x2:       400
 
Calibration square-wave signal 10 mV 2 Hz (120/min). The calibration signal is activated with a switch. 
Outputs the output signals of the 6 MAP signals are linked by jumpers to the PLUGSYS bus system. The link to the display unit is provided by a Recorder Output Module (ROM) installed in the PLUGSYS system. 
Supply 5 V 1.2 mA from the PLUGSYS system bus 
Dimensions module for the PLUGSYS housing, width: 12 E (60.6 mm), height: 3 U (128.7 mm), depth: Eurocard (220 mm) 
Connector  96-pin VG connector to DIN 41612 submin-D 15-HD 
Weight 0.5 kg 
Input box:   (order separately) input box with 6 differential inputs, sockets suitable for 2 mm dia. plug pins, including approx. 2 m connecting cable. 


HUGO SACHS ELEKTRONIK-HARVARD APPARATUS GmbH
Gruenstrasse 1 · D-79232 March-Hugstetten · GERMANY
Phone: +49 (0) 76 65 - 92 00-0 · Fax: +49 (0) 76 65 - 92 00-90