Institut für Astronomie und Astrophysik Abteilung Astronomie Sand 1, D-72076 Tübingen, Germany
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This photo shows the Echelle on board electronics box with the cover opened. The housing was built by DASA and is identical to those electronics boxes used by DASA for the ASTRO-SPAS electronics. The whole electronics in this box (except for the DC/DC converters) was developed at our institute.

The Echelle electronics box contains the following components:

• a DC/DC converter for power supply
• a Motorola M68000 processor system
• the data aquisition unit for the Echelle detector

• reading the photon coordinates delivered from the data aquisition unit
• integration of images from single photon coordinates
• storing the data on the ASTRO-SPAS magnetic tape
• aquisition of housekeeping data like temperatures, voltages, etc.
• sending parts of the data to the ground station
• receiving and processing commands from the ground station

• 2 boards with 2 analog-to-digital converters each to sample the maximum voltage of the pulses for each registered photon
• 2 boards with one digital divider each to calculate the X- and Y-coordinates for each registered photon
• one board to calculate an address within the image memory of the on board processor
• one FIFO board to buffer the photon image memory addresses

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| Impressum Last modified 07 Feb 2005