sonardyne uk (head office) t. +44 (0) 1252 872288 f. +44 (0) 1252 876100 e. sales@sonardyne.com www.sonardyne.com datasheet high power transponder / responder (discontinued) description sonardyne?s type 7823-04 is a high powered, directional transponder/ responder developed for deepwater rov positioning and long range towfish tracking applications. designed with size and weight in mind, the battery pack common to sonardyne's full size transponders has been removed to give full functionality in a 5,000 metre rated housing that is just 0.6 metres long and weighs 18.5kg in air. the unit can be operated in transponder mode, triggered on the common interrogation frequency, or in responder mode, electronically triggered, replying on any one of the 14 sonardyne reply frequencies. this gives the flexibility to avoid a frequency that may already be in use by or one that is being adversely affected by noise. in a deep tow tracking scenario, slant ranges of 5,000 metres can be achieved by utilising the unit's low frequency capabilities. acoustic energy is attenuated as it passes through the water column, the higher the frequency; the more its energy is attenuated. . key features ? sonardyne usbl compatible ? depth rated to 5,000 metres ? high power (205db) source level enables use over long laybacks ? directional transducer beam pattern; 15 degrees ? rugged, compact design for ease of mounting on most types of rov and towfish ? externally powered via main umbilical ? can be operated in responder mode (triggered electrically) or in transponder mode, interrogated on cif
sonardyne uk (head office) t. +44 (0) 1252 872288 f. +44 (0) 1252 876100 e. sales@sonardyne.com www.sonardyne.com specifications subject to change without notice - 10/2006 specifications high power transponder / responder (discontinued) feature type 7823-04 depth rating 5,000 metres (6,000 metres optional) operating frequency mf (19-32khz) transducer beamshape directional 15 o transmit source level (dependent on channel) 205 db re 1 pa @1m receive sensitivity threshold <85 db re 1 pa power supply 28-32v dc @ 2 amps directivity index 12db at 0 o pulse length 4ms responder trigger delay 61.3ms responder trigger ttl pulse (min 3ms) triggered on positive going edge. configured for simultaneous tran sponder and responder modes transponder turn around delay 62.5ms mechanical construction aluminium alloy, hard anodised dimensions (lxdia) 582mm (22.9?) x 178mm (7.0?) weight in air 18.5kg weight in water 9.2 kg
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