| Deck Unit
- GeoAcoustics Universal Transceiver |
|
General |
|
| Power
requirements |
110-230VAC selectable input, 50-60Hz, 200W,
optional 24VDC. |
| Size |
42.8cm W x 48.8cm D x 27.5cm H. |
| Weight |
26.5kg. |
| Temperature |
Storage: |
-20
to 75°C |
|
Operating: |
-5
to 50°C. |
| Humidity |
10% to 95% RH, non-condensing. |
| Mounting |
The unit is suitable for either bench or rack
mounting. |
|
|
|
Operating Specification |
| Tow fish supply: |
Isolated 370V DC, earth leakage & short circuit protected. |
|
|
| Digital
Cable Link |
| Data Rate |
|
| Uplink: |
8MBits/sec. |
| Downlink: |
640kBits/sec. |
| Cable length: |
0-6000 m. |
| |
|
| Rear Panel
Connectors |
| BNC: |
Two each for
responder/1PPS key. |
| RS232: |
Six for
GPS/time/magnetometer etc. |
| Amphenol: |
MS3102A-22-34S for deck cable. |
| |
|
| Tow Fish |
|
| Tow speed: |
1 to 12 knots. |
| Weight: |
30kg in air plus optional ballast. |
| Dimensions: |
20cm H x 22.6cm W
x 127cm L, 2 fins on tail protrude 22cm. |
| Frame: |
Aluminium with shear release carry handle/tow point. |
| Nose: |
Shock absorbing, abrasive resistant acetal with responder option. |
| |
|
|
Subsea Electronics Pressure Vessel |
| Transmitter
Section |
| High frequency: |
410kHz ±1%. |
| Low frequency: |
114kHz ±1%. |
| Power output: |
3kW pulse ±20%. |
| Pulse length: |
Programmable. |
| Pulse fall time: |
3 cycles maximum. |
| Pulse repetition rate: |
50 pulses per second maximum. |
| Protection: |
Open and short circuit protected. |
| Efficiency: |
Greater than 80%.
|
| Receiver
Section |
|
| Hi frequency: |
410kHz. |
| Low frequency: |
114kHz. |
| Bandwidth: |
programmable
up to
16 kHz. |
| Output resolution: |
24 bits floating point. |
| Raw sample rate: |
40MHz. |
| Processing gain |
>30dB. |
| Output data rate: |
up to
50 Ksamples/sec per channel.
|
| Timing |
|
| GPS 1PPS resolution: |
20us. |
| Responder: |
100us.
|
| Attitude |
|
| Heading accuracy: |
±0.5 degree. |
| Heading resolution: |
0.1 degree. |
| Roll/pitch accuracy: |
±0.2 degree. |
| Roll/pitch resolution: |
0.1 degree. |
| Depth accuracy: |
1% full scale depth. |
| Depth resolution: |
0.1m.
|
| General |
|
| Size: |
12.2cm D x 55.2cm L.
|
| Transducers |
|
| Source level: |
223 ±3dB re 1µPa@ 1m. |
| Beam width: |
114kHz - 50° x 0.8°. |
| |
410kHz - 40° x 0.3°. |
| Sensitivity: |
-190dB re 1V/µPa. |
| Depression angle: |
20° ± 1° down.
|
Optional
Magnetometer Interface
A maximum of 2 optional sensors can be fitted: |
| Output voltage: |
24VDC. |
| Interface: |
RS232. |
| Baud rate: |
Up to 38.4 kbits/sec. |
Specifications subject to change without
notice.
|
