Simrad ES70 - REFERENCE MANUAL REV A Reference Manual page 20

Simrad ES70
Table 1 Maximum detection depth, single beam transducers (cont'd.)
Transducer Frequency
(kHz)
38/200D 38
38–9 38
38–7 38
50/200D 50
50–7 50
120–25 120
50/200D 200
Table 2 Maximum detection depth, split beam transducers
Transducer Frequency
(kHz)
ES18–11 18
ES38B 38
ES70–11 70
ES120–7C 120
ES200–7C 200
These range calculations assume a normal sea water salinity (3.5 ppt) and temperature
(+10 degrees Celcius), an average bottom (surface backscattering strength = -20 dB) and
a noise level typical for a moving vessel.
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Pulse Bandwidth
duration
(hz)
(ms)
4,09 766
4,09 766
4,09 766
2,05 1493
2,05 1493
1,02 3026
1,02 3088
Pulse
Bandwidth
duration (hz)
(ms)
8,21 382
4,09 766
2,05 1526
1,02 3026
1,02 3088
Tx power Range fish
(W)
(m)
1000 500
1500 800
2000 950
1000 500
2000 700
1000 390
1000 280
Tx power
Range fish
(W) (m)
2000 1100
2000 950
800 450
1000 440
1000 270
Range
bottom (m)
2100
2600
2800
1500
1900
800
550
Range
bottom (m)
7000
2800
1100
850
550
338106/A