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News Release from: Acal Microsystems
Subject: North Atlantic 76CS2
Edited by the Electronicstalk Editorial Team on 8 May 2006

Single card handles 12 rotational sensors

The North Atlantic 76CS2 is a single slot card containing 12 separate transformer isolated synchro/resolver-to-digital tracking convertors with extensive diagnostics.

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Available now from Acal Microsystems the North Atlantic 76CS2 is a single slot card containing 12 separate transformer isolated synchro/resolver-to-digital tracking convertors with an optional internal 5VA reference, and extensive diagnostics. System reliability has been substantially improved by the in-built diagnostic which immediately alerts the user to channel malfunctions, at the same time reducing bus traffic because the status registers do not require constant polling. One online and two offline tests can be selected.

The measurement channels can be field configured for either single or multi-speed to any ratio between 2 and 255 and incorporate synchro/resolver inputs, high linearity digital velocity outputs and angle change alert.

Having the unique capability to automatically shift to higher bandwidths, the S/D channels never lose tracking and even when large accelerations are encountered the shifting is smooth and continuous with no glitches.

Tracking rates are only limited to bandwidth restrictions, up to 150rev/s, at 16bit resolution.

A 'latch' feature permits the user to read all channels at the same time and the use of Type II servo loop processing techniques enables full accuracy tracking up to the specified tracking rate.

A step input will not cause any hang-up condition.

Intermediate transparent latches assure that current valid data is always available for any channel without affecting the tracking performance of the convertors.

For two-speed applications, the ambiguity circuits maintain monotonic outputs by compensating for variations of the zero positions between the coarse and fine Synchros.

However, if the maximum allowable angle difference of 90 degrees/n is exceeded, a flag will be set that indicates to the user that the input synchros are out of alignment.

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