Four channel transducer amplifier

Presentation

The ETH-401 is a dedicated bridge amplifier for BIOSEB transducers that provides four channels of excitation power, gain, and noise filtration. It exhibits low system noise and offset, making it suitable for use with high resolution data acquisition systems.
The ETH-401 is an ideal solution for interfacing low bandwidth transducers, such as those used to measure force, blood pressure and displacement to data acquisition systems such as the IX-118.


Operating principle

Gain control on the ETH-401 is very straightforward. A programming resistor placed in the DIN-8 connector is used to definitively set the gain. BIOSEB transducers set the ETH-401 gain to the optimal value for a given measurement. However, this does not limit the ETH-401 to use with BIOSEB transducers. Most of non-BIOSEB transducers, can be set to work with the ETH-401.

The ETH-401 is an inherently very low offset device. This, together with the low offsets characteristic of bridge-style transducers and the high resolution of the IX-118 data acquisition system dramatically minimizes the need for offset control. The ETH-401 user experience is simplified as a result.

The ETH-401 is packaged in a low profile aluminum enclosure that provides both durability and increased noise immunity. The device has a small foot print and multiple units are easily stacked to save bench space.

Key features

• 4 Differential DIN8 Connector
• Four channels of excitation power, gain, and noise filtration
• Low system noise and offset
• High resolution minimizes the need for offset control
• Very straightforward gain control
• Small foot print and multiple units are easily stacked to save bench space
• Low profile aluminum enclosure that provides both durability and increased noise immunity

Domains of application

• Interfacing low bandwidth transducers
• Amplifying signals for measurements of force, blood pressure, and displacement to data acquisition systems
• Teaching or research context for all physiology applications