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radar interface

RI Radar Interface

mar13

Intro:

The Radar Interface (RI) is an A/D system built at the observatory. It has 4 12 bit 10 MHz A/D converters. These A/D's feed 4 16k(?) deep fifos. The device interfaces with the VME bus in the da vme crate. The flexible sampling modes include:

1,2,4,8,12 bit sampling
continuous or windowed sampling (in conjunction with the rtg or the sps).

The ri History:

1970's miguel feyjoo build the first ri with 1 MHz samplers.
1989 (?) edwin torres built the first ri that interfaced to the harris computers.
1994 bill sisk rebuilds the ri, now runs off the vme bus first ri was build by edwin torres and jon hagen around 1989is workhorse has been in operation since the early 1990's .

Documentation:

Radar interface manuals

current version (bill sisk 1994)

Ch 1-8: general info (.pdf)
Ch 9 PAL source code (.pdf)
Ch 10. Appendices: datasheets and schematics(.pdf)

first ri (edwin torres, jon hagen 1990)

Ch 1-8: general info (.pdf)
Ch 9 Manufacturer's Data Sheets (.pdf)
Ch 10. Schematics (.pdf)

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