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SYSTEM PERFORMANCE AND DATA TYPES
SeaBat T-Series Subsea Operator's Manual
Page 53
January 31, 2019
Version 7
Table 5: SeaBat T-Series Subsea System Performance
Parameters
400kHz
200kHz
Operating frequency, deep
400kHz
200kHz
Operating frequency, shallow
190-420kHz (CW) / 200-400kHz (FM)
Across-track receive beam widths*
(nominal values)
T20:
1.0°
T50:
0.5°
T20:
2°
T50:
1°
Along-track transmit beam widths
(nominal values)
1°
2°
Number of beams
Max. 512, min. 10
Max. swath coverage,
T20
140° ED/165° EA
Max. swath coverage,
T50
11
150° ED/165° EA
Depth, typical
12
CW:
0.5-150m
FM:
0.5-180m
CW:
0.5-300m
FM:
0.5-450m
Depth, max.
13
CW:
225m
FM:
300m
CW:
400m
FM:
575m
Ping rate (range dependent)
Up to 50 pings/s
Pulse lengths CW
Single head: 15-300µs
Dual head:
30-300µs
Pulse lengths FM
Single head: 300µs-20ms
14
Dual head:
300µs-5ms
Depth resolution
6mm
Depth rating
6000m or 400m
Temperature
Operating:
-2ºC to +36ºC
Storage:
-30ºC to +70ºC
*
Receive center beam widths
15
:
T20: 1.07° (at 400) / 2.14° (at 200kHz)
T50: 0.54° (at 400) / 1.07° (at 200kHz)
11
Seabed will not be 100% insonified when exceeding approx. 140° in equi-distant mode.
12
This is a depth range within which the system is normally operated, from the minimum depth to a depth
value corresponding to the max. swath -50%.
13
This is a single value corresponding to the depth at which the swath is reduced to 10% of its max. value.
14
Max. 5ms at 66kHz for T50.
15
Receive center beam width mean values from far-field simulation. All beam widths measured at -3dB, center
beam unsteered, with a sound velocity of 1440m/s, 30dB Chebyshev shading applied.
Summary of Contents for SeaBat T Series
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