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)
<100dB re 1µPa
Continuously Operating
2 years Alkaline
3 years Standard Lithium
4.5 years Long-Life Lithium
Sequential
Programmable 0–9 (1-401 Optional)
Anodised Aluminium Alloyed and
Stainless Steel
353mm (13.9”) x 64mm (2.5”)
1.9kg
1.2kg
Type 7835
12,000 Metres
>183dB re 1µPa @1m
>183dB re 1µPa @1m
Programmable 1-9
HF (35-55kHz)
<100dB re 1µPa
Continuously Operating
2 years Alkaline
3 years Standard Lithium
4.5 years Long-Life Lithium
Sequential
Programmable 0–9 (1-401 Optional)
Titanium Grade 5
376mm (14.45”) x 80mm (3.15”)
5.5kg
3.8kg
Specifications subject to change without notice - 10/2006
RF/Wirelessly
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