Simrad 38-9 - DATASHEET REV B Datasheet

Simrad 38-9
Single beam echo sounder transducer

Introduction

The Simrad 38-9 is a medium
size, 38 kHz single beam echo
sounder transducer. It incorporates
48 Tonpilz elements. The circular
transducer body is easily mounted.

Order number

KSV-203635

Technical specifications

• Resonant frequency: 38 kHz
• -3 dB bandwidth: 7 kHz
• Circular beamwidth: 9 deg
• Directivity D: 400
• DI = 10 log D: 26 dB
• Equivalent two-way beam
angle Ψ: 0.016
• 10 log Ψ: -18 dB
• Side lobes: Less than -18 dB
• Back radiation: Less than -25 dB
• Nominal impedance: 75 ohm
• Max. variation in |Z|: 60 to 95 ohm
• Max. variation in
phase angle: ±30 deg
• Transmitting response:
177 dB re 1μPa per V
• Receiving sensitivity, open
circuit: -171 dB re 1V per μPa
• Electro-acoustic efficiency: 0.70
• Max. pulse power input: 1500 W
• Max. continuous input: 30 W
• Max. transducer depth: 100 m
• Cable length: 20 m
• Cable diameter: 11 mm
• Weight: 18 kg
• Storage temperature: -20° to 70°C
M A X I M I Z I N G
-30
Beam pattern
Y O U R P E R F O R M A N C E
(CD017017A)
0
30
-10
-20
-30
-40
0
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A T S E A
Susceptance, mS
5
38
35
0
43
-5
33 kHz
5 10
Conductance, mS
Admittance
(CD017017B)
40
15 20