driving the Onsala 20m via CANopen

The old control system used GBV 5410 amplifiers and KSY 548.30-1 motors (0.51 Nm/A) to drive the antenna via an analog output signal in the range of ±5000 DAC units from the digital control loop. The DAC signal yields a voltage ±10V at 16bit resolution (i.e. 10V/32768). The amplifier produces 6A per 5V.

About nain

This is a Drupal installation on a ReadyNAS 312, located at Onsala Space Observatory, Sweden.

The machine also serves as a Ubuntu/Debian repository for radio-astronomical software developed externally and in-house.

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