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Depending on the seabed
positioning accuracy and telemetry range that is required,
the transponder can be operated in either Extra High Frequency
(EHF) mode with relative positioning accuracies of better
than +/- 5cm or in Medium Frequency (MF) mode with relative
positioning accuracies of +/- 15cm. In EHF mode telemetry
ranges are up to 1km whilst in MF mode, ranges of up to
3km can be achieved. Note: All ranges are subject to local
levels of noise.
The unit is depth rated
to 2,500 metres and has a fully instrumented bottom endcap
with acoustic release mechanism. It is compatible with existing
acoustic topside calibration and navigation equipment, in
the relevant frequency band
Technical Specifications
:-
| Feature |
MF Mode |
EHF Mode |
| Depth Rating |
2,000 Metres |
2,000 Metres |
| Frequency Modes |
MF (18-36kHz) |
EHF (50-110kHz) |
| Transmit Source level |
192dB re 1µPa @1m |
>190dB re 1µPa @1m +/-3dB |
| Transducer Beamshape |
Omni-Directional (±130 degrees) |
Omni-Directional (±130 degrees) |
| Typical Accuracy |
0.15 – 1.0 Metres |
0.05 – 0.15 Metres |
Receiver Threshold
Battery Life (Listening) |
<85dB re 1µPa
Lithium: 818 days |
<90dB re 1µPa
Lithium: 818 days |
No. of Transmissions (High
Power)
|
Lithium: 3.4 x 106 |
Lithium: 17 x 106 |
| Operating Life @ 4s Interrogation
in High Power |
Lithium:112 days |
Lithium:257 days |
| Features |
Pressure relief System
valve
12 channels Simultaneous Receiver
Acoustic Release Mechanism |
Optional Sensors Depth
Temperature
Salinity |
Quartz or Strain Gauge
PRT
Conductivity |
| Mechanical Construction |
Aluminum Alloy Hard Anodised22.8kg |
| Dimensions (LxDia) |
1453mm (57.2”) x
178mm (7”)11.6kg |
| Weight in Air |
30kg |
| Weight in Water |
13.4kg |
Features:-
- Compatt with EHF and MF frequency functions
in one combined transponder
- Capable of positioning either hard wired
RovNav or remote, wireless, Compatt
- Depth rated to 2,500 Metres
- Box-In" with Sonardyne LUSBL or
HiPAP® topside equipment.
- Range and Direction from Sonardyne LUSBL
or HiPAP® topside equipment
- Long range MF baselines
- High accuracy baseline measurements,
including metrology
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