Design

In 1991, a special front-end module for high resolution signal averaged electrocardiohraphy (late potentials detection) was designed and built by Dr. Gramatikov, as an extension to the existing ECG Computer System 1222. The module is an extension to the system's amplifier, which is isolated by means of optocouplers and a DC-DC converter. The module accommodates in a separate box which, which connects to the system's amplifier PCB. It is also connected to 4 couples of patient cables.

Some more pictures:

Click here for a picture of the front-end module and the system's main PCBs: amplifier board, digital board, and modified serial interface board.

The modified RS 232 serial board connects directly to the digital board.

Click here for a block diagram of the HiRes front end module.