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ETH-256 Two Channel Combination Bridge/Biopotential Amplifier

The ETH-256 is a high performance general-purpose life science research amplifier. Its high input impedance and high CMR allows low noise recording of biopotential signals, as well as outputs from strain gauge type transducers, such as force, displacement and pressure. The optional C-ISO-256 isolated head stage may be used with the ETH-256 for recording ECG, EMG and EEG signals from humans.

$1,695.00$1,995.00

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SKU ETH-256 Category

Description

The ETH-256 is a high performance general-purpose life science research amplifier. Its high input impedance and high CMR allows low noise recording of biopotential signals, as well as outputs from strain gauge type transducers, such as force, displacement and pressure. The optional C-ISO-256 isolated head stage may be used with the ETH-256 for recording ECG, EMG and EEG signals from humans.

Each channel can provide +/-5.0V of excitation at 50 mA, adequate for most commonly used transducers. In addition, customers may specify adapter cables to accommodate Grass, Gould or HP sensors.

The ETH-256 offers eight gain settings, x1, x5, x10, x50, x100, x500, x1k and x5k. Signals may be further conditioned using high and low pass frequency filters. All filters are four pole active design with sharp roll offs. High pass filter cuts, useful for biopotential measurements, are available at DC, 0.03 Hz, 0.3 Hz and 3 Hz. Low pass filters, useful for limiting high frequency noise, are available at 5 Hz, 50 Hz, 150 Hz, 2 kHz and 10 kHz.

Either of the ETH-256 amplifier’s channels may be configured as a bridge-style transducer amplifier or as a biopotential amplifier. In bridge mode the ETH-256 amplifier’s 10 gigOhm input impedance and differential input allow it to accept input from force, displacement or pressure transducers. In addition, input from many thermistors, pH electrodes and other variable resistance devices is possible. In the biopotential mode, the ETH-256 functions as a low noise AC coupled preamplifier.

Also  consider the IA-400D  a 4 channel amplifier, that with the C-ISO-256, can also be used for measuring biopotentials such as ECG, EMG etc in humans.

IA-400D vs ETH-256C

Comparision between the IA-400D and the ETH-256

Quick Comparision between the ETH-256 and IA-400D

 ETH-256IA-400D
Number of Channels24
GainSet by Transducer and
x1,x5, x10, x100, x500, x1k, x5k?
Set by Transducer
(x400 with C-ISO-256)
Low Pass Filter5, 50, 150, 2k, and 10 kHz50Hz and 10kHz
High Pass FilterDC, 0.03, 0.3, and 3 HzDC (0.05 Hz with C-ISO-256)
Transducer Excitation Voltage+5V and -5V+5V and -5V
Power12 VAC wall adapter12 V DC wall adapter

Specifications

Number of channels2
Operational ModesBridge, Biopotential (ECG, EMG, EEG) 
Gainx1, x5, x10, x100, x500, x1k, x5k
Low Pass Filter
(4 pole active)
5, 50, 150, 2k, and 10 kHz
High Pass Filters
(4 pole active)
DC, 0.03, 0.3,
and 3 Hz
Input Impedance10 gigOhm
Output Impedance10 Ohm
CMR100 db @ 60 Hz
Offset Range+
5 V
Input Range+
5 V
Input ConnectorBNC and DIN
IsolationOptical with optional C-ISO-256
Noise<10 mV (RTI)/<2 uVolt
(RTI)
Transducer Excitation Voltage+
5 V
Current50 mA/channel
Power12 VAC wall adapter (A-P12-AC-35-1A )
EnclosureAluminum

Transducers compatible with the ETH-256

Design Your System

Choose the parameters you want to Measure

ECG/EKG
EMG : Number of Channels
Invasive BP : Number of Channels
Non-Invasive BP : Number of Channels
Flow : Number of Channels
Temperature: Number of Channels
Force: Number of Channels
Stimulation: Describe the type

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