Settings and performance of acoustical instruments:
|
Frequency |
38 kHz |
120 kHz |
|
|
Basic range (m) |
0-100/0-250 |
0-100 |
|
|
Bandwidth |
3.0 kHz |
3.3 kHz |
|
|
Pulse length |
0.6 m.sec. |
0.6 m.sec. |
|
|
TVG and gain |
20 logR -20 dB |
20 logR 0 dB |
|
|
Recorder gain |
7 |
4 |
|
|
Transmitter power |
External transm. |
High |
|
|
Transducer dimension |
8° x 8° |
10° circular |
|
|
(ceramic) |
30 x 30 cm |
|
|
|
Discriminator |
5 - 7 |
- |
|
|
Source level + voltage response |
138.4 dB |
113.2 dB |
|
|
Measured |
14 May 1982 |
14 May 1982 |
|
|
Integrator treshold |
A |
0.5 |
0 |
|
|
B |
0.5 |
0 |
|
Integrator gain |
A |
20 dB x 10 |
10 dB x 10 |
|
|
B |
20 dB x 10 |
10 dB x 10 |
|
Depth intervals (m) |
A |
4-100/4-200 |
4-50 |
|
|
B |
100-300/200-400 |
50-100 |
|
Bottom stop |
ON |
ON |
|
