cNODE - Transponders for HiPAP and MicroPAP
cNODE® is a series of transponders for underwater acoustic positioning and data link. They have more than 500 channels available, and can all be positioned by HiPAP® underwater positioning systems. Each underwater target to be positioned must have a transponder or a responder installed. The transponder operates acoustically while the responder requires a cable for triggering. The cNODE® range of transponders are backwards compatible with the older FSK channels and telemetry protocols and can therefore be used by any HiPAP® system.
Cymbal and compatibility
The new cNODE® range of transponders are compatible with HiPAP® FSK channels and telemetry protocols. The new HiPAP® 502/452/352/352P/102 systems works with the Cymbal acoustic protocol for more accurate positioning and high speed data link (up to 8000 bits/second). Ranges can be measured with 0.02 m accuracy and over longer distances due to more energy in the signals.
The various cNODE® models have either 4000 metre or 7000 metre depth rating. They have different source levels, dependant on the beam pattern, lifetime and functions. The cNODE® transponders can use both frequency shift (FSK) modulation technique and the Cymbal acoustic protocol which utilizes wideband Direct Sequence Spread Spectrum (DSSS) signals.
The cNODE® concept has a modular construction such that the transducer, transponder electronics, battery pack and optional add-on’s can be replaced individually. The Floating collars have been redesigned and are very user friendly and secure in use. The HiPAP® MF systems (not HiPAP 102) may also position Diver Emergency Channels A and B, but at a reduced range, typical max. range 1000 metre.