Simrad 38-7 - REV C User manual

TRANSDUCER
Simrad 38-7
38 kHz Single-beam transducer
(855-164017 Rev.C)
Introduction
The 38-7 is a large, single-beam transducer incor-
porating 88 Tonpilz elements. It has a relatively
narrow beam with substantial range capability.
Order number
KSV-082776
Technical specications
Resonant frequency.........................................38 kHz
Beamwidth, circular.....................................7 deg ±1
Directivity index ..........................................28 ±1 dB
Equivalant two-way beam angle............. -20.5 ±1 dB
Side lobes..........................................less than -15 dB
Back radiation ...................................less than -35 dB
Impedance:
Nominal...................................................60 ohms
Max. variation in |Z| .........................45 - 80 ohms
Max variation in phase angle .........................±30 deg
Transmitting response.............................185.5 dB ±2
re 1µPa per V
Receiving sensitivity, open circuit ........ -170.5 dB ±2
re 1V per µPa
Electroacoustic efciency:
Typical ............................................................0.70
Minimum........................................................0.50
Maximum input power ..................................4000 W
Maximum duty cycle at max. power.................... 1 %
Maximum transducer depth ............................... 50 m
Cable length ....................................................... 20 m
Cable diameter ................................................ 11 mm
Weight without cable ........................................40 kg
Storage temperature ................................-20 to 70 °C

Manufacturer:
Simrad AS
Strandpromenaden 50
P.O.Box 111
N-3191 Horten
Telephone: [phone]
Data
Installation