User Manual

Specifications A-3
IS Digital Si gnal Pr ocessor Board (5000-0636)
Processor
Texas Instruments VC33 DSP (Di gi t al Signal
Processor)
Memory
1 megabyte non-volatile (program, conf i guration,
and data storage); 512 kil obyt es stati c RAM
Data Storage
140 days (1 velocity and 2 depth readings at a 15-
minute sample rate)
Comm Protocol
Enhanced AccuYapp f or modem, wireless, and
serial c ommunicat i ons
Clock
Battery-backed RTC Module
Inputs/Outputs
Isolated frequency input (to read IS bat tery)
Isolat ed serial communications
Accubus High-Speed I/O (to other i nt ernal P CBs)
Protection
Agency-approved optois ol at ors; current-limiting
resistors