7835

Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Datasheet Deep Marker Transponder Description Part of Sonardyne’s Coastal Acoustic product range, the Type 7835 transponder have been designed for low cost applications where a compact design is an important operational factor but where deep water operation is required. The transponders enable critical targets such as underwater structures, diving bells and instrumentation packages to be marked unambiguously and later relocated using Sonardyne's Homer-Pro and ROV-Homer range and direction systems. The transponders operate with Sonardyne's diver hand-held range and direction device Homer-Pro (Type 7797) and ROV-Homer (Type 7832) for use on Remotely Operated Vehicles (ROVs). The diver's/ROV's unit interrogates the transponder to be relocated (specified by the diver or ROV pilot) and from the reply, determines both the range and direction of the transponder. Key Features • Use for relocating targets of special interest e.g. tools, diving bells, seabed instrument packages... • Choice of depth rating; 4,000 Metre or 12,000 Metre • Compact and rugged design • Up to 3,600 unique addresses • Compatible with Scout USBL, Prospector, ROV-Homer and Homer Pro relocation systems • HF frequency band from 35-55kHz • Long life battery packs give up to 4.5 years listening life The compact design of the transponders enable normal or emergency relocation of points of interest, underwater distance measurement and small target and diver tracking. The unit operates in the HF frequency band from 35-55kHz. External programming of interrogation address and reply frequencies are incorporated. Sonardyne UK (Head Office) T. +44 (0) 1252 872288 F. +44 (0) 1252 876100 E. sales@sonardyne.com www.sonardyne.com Specifications Deep Marker Transponder Feature Depth Rating Transmit Source Level Reply Frequency Operating Frequency Range Receive Sensitivity Switch On Quiescent Life Interrogation Mode Interrogation Address Mechanical Construction Dimensions (LxDia) Weight in Air Weight in Water Type 7835 4,000 Metres >183dB re 1µPa @1m >183dB re 1µPa @1m Programmable1-9 HF (35-55kHz) 183dB re 1µPa @1m >183dB re 1µPa @1m Programmable 1-9 HF (35-55kHz)