7097 Datasheet, PDF (1/2 Pages) Sonardyne sound in depth – Emergency Transponders

Datasheet
AODC Emergency Transponders
Sonardyne UK (Head Office)
T. [phone]
F. [phone]
E. [e-mail]
www.sonardyne.com
Description
Sonardynes AODC Emergency
Transponders have been developed
to satisfy the requirement for a
portable and economic device for
fitting to Diving Bells which will
provide an up-to-date means of
emergency relocation.
They also satisfy the growing need
for small, medium-range
transponders, which can be easily
handled/ deployed by divers and
vehicles and used for making high
precision measurements and
assisting area searches in low
visibility.
Operating in the frequency band of
37-40kHz, these transponders have
been developed to meet stringent
AODC requirement. They operate in
the 'Sequential Mode' and are
interrogated on their own individual
preset interrogation frequency
(Channels A or B). The reply
frequency is preset to the 'emergency
reply frequency' of 37.5kHz.
Key Features
• Meets AODC requirements
• Compact, rugged design
• Minimum interrogation range of
500 metres
• Choice of operating channels
• Up to 18 months listening life
The excellent transducer response
time and stable turnaround delays
allows good measurement accuracies
to be achieved and the delayed
response provides a 'down to zero'
ranging capability. The output power
selected allows a compromise
between an acceptable operating
life, operation in high levels of noise
and as a minimum, an interrogation
range of 500 metres.