SIMRAD NEW 38/200 kHz Wide beam combi

Introduction
The 38/200 Combi W is a dual frequency transducer (38
and 200 kHz), and both frequencies operate with wide
beams (31°). This makes the transducer perfect for shallow
water fish detection using the 200 kHz frequency, and
excellent for bottom discrimination from shallow depths
and down to several hundred meters using both frequencies.
This is currently the only 200 kHz wide beam (31°) transducer
available on the market. It has been made possible
using the latest Simrad Composite Transducer Technology.
This unique technology also ensures a transducer
efficiency above 70%.

The new 38/200 Combi Wide
transducer has a lower power
rating than other transducers.
This means that the echo sounder
software must be set up to
automatically reduce the power
output to avoid damage to the
transducer.
Failing to do so may damage the
transducer beyond repair.
The maximum pulse power rating for
the transducer is:
38 kHz: 400 W
200 kHz: 250 W
Maximum continuous power rating is:
38 kHz: 5 W
200 kHz: 4 W
DO NOT apply more power than the rated
maximum! Exceeding the power input will
permanently damage the transducer.
The ES60, EQ60 and ER60 echo sounders
will provide automatic power reduction
when the 38/200 Combi Wide transducer is
selected. This feature is included from the
following software versions:
ES60: 1.5.2.76
EQ60: 1.5.2.76
ER60: 2.1.0
To check the current software version on
the echo sounder, go to the Help menu,
and select About the echosounder. Also,
on older software versions, you will not be
able to find this transducer listed among the
available transducers.
If it is necessary to upgrade the software,
the applicable software versions can be
provided by Quin Service dept.

For use with the xx44 and xx54 echo
sounders, you will need software version
2.02 or later, which automatically reduces
the power output when the transducer is
selected. Check that the transducer is listed
among the options!

If this transducer is used with any other
echo sounder, the warranty is voided!

Request colour brochures by email.

Order number
KSV-208845
Common specifi cations
Nominal impedance ..............................................75 ohms
Maximum transducer depth ....................................... 20 m
Cable length ............................................................... 15 m
Cable diameter ............................................. 10.6 ±0.5 mm
Weight with cable ....................................................... 5 kg
Storage temperature .........................................-20 to 70°C

Technical specifi cations 38 kHz
Resonant frequency .................................................38 kHz
Maximum pulse power input: .............................400 W(*)
Maximum continuous power input: ........................5 W(*)
Beamwidth longitudinal .......................................... 31 deg
Beamwidth transverse ............................................. 31 deg
Directivity, DI=10logD ..........................................15.5 dB
Side lobes ................................................. less than -15 dB
Back radiation .......................................... less than -20 dB
Source level at 400 W ............................... 208 dB re 1µPa
Transmitting response ..................... 164 dB re 1µPa per V
Receive sensitivity, open circuit .... -184 dB re 1V per µPa
Electroacoustic effi ciency ........................................... 50%

Technical specifi cations 200 kHz
Resonant frequency ...............................................200 kHz
Maximum pulse power input: .............................250 W(*)
Maximum continuous power input: ........................4 W(*)
Beamwidth longitudinal .......................................... 31 deg
Beamwidth transverse ............................................. 31 deg
Directivity, DI=10logD .............................................16 dB
Side lobes ................................................. less than -20 dB
Back radiation .......................................... less than -30 dB
Source level at 250 W ............................... 208 dB re 1µPa
Transmitting response ..................... 165 dB re 1µPa per V
Receive sensitivity, open circuit .... -197 dB re 1V per µPa
Electroacoustic effi ciency ........................................... 70%
(*) The transducer must be submerged in water when
transmitter power is applied. Transmitting in air will
damage the transducer permanently.

Warning!
Observe the maximum pulse power rating for this
transducer:
38 kHz: 400 W
200 kHz: 250 W
Maximum continuous power rating is:
38 kHz: 5 W
200 kHz: 4 W
DO NOT apply more power than the rated maximum!
Exceeding the power input will permanently damage the
transducer.

For those interested I have the current Simrad transducer installation manual which also covers this new model.
Please request by email if you need a copy. Approx 34 pages .


Regards
Frank