SIRIUS
®
TECHNICAL REFERENCE MANUAL
FPGA
A field-programmable gate array (FPGA) is an integrated circuit designed to be configured by the
customer or designer.
After manufacturing: hence field-programmable .
GND
The electrical ground (aka. earth).
GPS
The Global Positioning System (GPS) is a space-based global navigation satellite system that provides
reliable location and time information in all weather and at all times and anywhere on or near the Earth
when and where there is an unobstructed line of sight to four or more GPS satellites.
Hz
The hertz (symbol: Hz) is the SI unit of frequency defined as the number of cycles per second of a
periodic signal.
IRIG-B
The Inter Range Instrumentation Group (IRIG) is the standards body of the Range Commanders Council
(RCC). They publish a number of standards: e.g. IRIG time-codes The different time-codes defined in the
Standard have alphabetic designations. A, B, D, E, G, and H. IRIG-B has a Bit rate of 100 Hz.
LED
A light-emitting diode is a semiconductor light source. It is used in all modules of the SIRIUS® system to
indicate the status of the modules.
LEMO
LEMO is the name of the high quality push-pull connectors that are used for cable connections: e.g. the
power-supply cable and the sync cables of the SIRIUS® system. The company that produces these
connectors is also called LEMO ( www.lemo.com )
SIRIUS
®
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