Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. sales@sonardyne.com
www.sonardyne.com
Datasheet
Wideband Mini Transponder (WMT)
Description
Sonardyne’s existing Wideband Sub-
Mini transponder (WSM) is typically
interrogated by a responder trigger
down the ROVs’ umbilical or a
narrow band tone signal. In some
situations, reverberation or multipath
of the tone interrogation can cause
interference problems. The new
WMT is Sonardyne’s first mini-sized
transponder, slightly larger than the
WSM and providing full two-way
Wideband interrogation and reply
which completely mitigates
interference from other users and to
other users.
For use on ROVs, the WMT includes
responder trigger, an integrated
Li-Ion battery pack that is charged
from the ROV’s power supply and
full RS232communications enabling
channel set up, power, gain etc. to
be changed from the surface.
An On/Off switch helps ensure the
battery pack is not discharged when
not in use. When an umbilical trigger
is not available, then full Wideband
mode provides excellent USBL
performance in a small, lightweight
form.
New remote transducers, either omni
or directional are available for both
the WMT and existing WSM range.
These make installation on an ROV
easier as the transducer can be
installed where there is good line-of-
sight.
The main body of the transponder,
the more expensive part, can then be
installed within the ROV frame where
it is well protected. Transducers can
then be easily replaced if damaged.
Key Features
•
Full two-way Sonardyne
Wideband® interrogation and
reply – mitigates any interference
and multi-path issues
•
Mini size – lightweight and small
•
Responder mode
•
Li-Ion battery pack
•
Optional remote transducer
•
Pressure sensor option
•
Full RS232 control from the surface
•
External On/Off switch
•
New, versatile and future-proof
design
Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. sales@sonardyne.com
www.sonardyne.com
Specifications
Wideband Mini Transponder (WMT)
510.3 mm [20.09 in]
Ø93.1 mm [3.67 in]
Over PVC sleeve
Ø88.0 mm [3.46 in]
Housing
M AX
350.0 mm [13.78 in] (Clamping area)
499.0 mm [19.65 in]
Ø93.1 mm [3.67 in]
Over PVC Sleeve.
]
in
Ø88.0 mm [3.46 in]
Housing.
System Features
Depth Rating
Frequency Band
Transducer beam shape
Source Level (re 1 µPa @ 1m)
Depth Sensor
Communications Interface
External Supply Voltage
External Power
Battery Life
(Lithium Ion 15V)
Mechanical Construction
Dimensions
Weights (Air / Water)
Options
Specifications subject to change without notice – 03/2009
Ø
.0
98
6
.8
[3
m .
m AX
M
350.0 mm [13.78 in] (Clamping area)
High Power
Low Power
Sleep
Wideband Listening
Battery Charging
Peak (during transmission)
Listening
Continuous 5 sec interrogation
Type 8190-3111
Type 8192-3112
3,000 Metres
3,000 Metres
MF (19-36kHz)
MF (19-36kHz)
Omni-Directional ± 130º
Directional ± 40º
187 dB
193 dB
181 dB
187 dB
± 0.5% full scale
± 0.5% full scale
RS232 (9,600 – 115,200 baud)
18-50 Volts DC
18-50 Volts DC
<300mW
<300mW
<500mW
<500mW
6W
6W
<50W
<50W
30 days
30 days
Approx 6 days at low power Approx 6 days at low power
Anodised Aluminium alloy
Anodised Aluminium alloy
and Plastics
and Plastics
499mm x 93mm
510mm x 98mm
5.1 / 2.2Kg
7.0 / 3.5Kg
Remote, cable connected transducer (see separate datasheet)
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