Valeport - Model 750 -Data Telemetry Buoy
The Model 750 Telemetry Buoy is the ideal accessory for Valeport`s Wave Recorders, and other Valeport instrumentation, with its fully bi-directional UHF link between instrument and PC. The buoy is of classic spar design, with a rigid floatation unit. All electronics and battery are held in a submerged stainless steel pod, which also has a connector for communications with the instrument, and mounting points for a strain cable. With an omnidirectional antenna and selectable frequency within the 458.5 - 458.9MHz band, data transmission of up to 20km can be acheived (with clear line of sight). The receiver unit, supplied with a 3dB antenna, plugs directly into the user`s PC and communications are established using Valeport`s standard Windows based software packages. GSM and VHF versions are also available.
Buoy
Dimensions
- Overall Height: 3 metres (1.3m below water, 1.7m above).
- Spar Diameter: 50mm
- Buoyancy
- Diameter: 0.60m
- Buoyancy: full submersion 88kg (Additional 60 kg buoyancy module also available)
Materials
- Spar: Stainless Steel
- Electronics Pod: Stainless Steel
- Buoyancy: Polyethylene with Polyurethane foam filling
- Mooring: 2 off 10mmØ holes, acetal lined, for shackles
Light
- Type: Solar powered marine light
- Colour: Amber
- Range: 1.6km
- Flash rate: Factory set 10, 15 or 60 flashes per minute
- Operating life: 5 to 8 years
- Power source: Integral solar cell
- Light source: High intensity LEDs
Battery
- Sealed 12v lead acid. 24 Ah capacity. [Yuasa NP24-12]. Safety pressure
- relief valve in spar mast.
Antenna
- Unity Gain omni-directional co-linear antenna.
UHF Radio Transmitter
- Frequency: 458.5 to 458.9MHz
- Channels: 35
- Spacing: 12.5KHz
- Selection: User selectable via switches
- Licence: Conforms to MPT 1329 and European ETSI 300-220 standards
- RF Power: Factory set to 100mW nominal peak output to comply with MPT1329
Modem
- Input data rate: 19200 baud
- Tx data rate: 9600 bits/sec
- Interface: RS232
Power
- Input voltage: 12v DC nominal
- Supply current:
- 410 mA (transmit)
- 120 mA (receive)
- 0.04 mA (quiescent)
UHF Radio Receiver
- Specifications as Transmitter, except:
- Size: 200 x 180 x 70mm
- Weight: 1.5 kg
- Antenna: 3dB colinear omni-directional with 10m cable
- Input voltage: External 10 to 28vDC nominal. Power supply must not be a switched mode design as this can cause interference.
- Supply current: 410 mA (transmit), 120 mA (receive)
- Connector: 9 way D type
GSM Transmitter
- SIMM: Customer Supplied (including Pay As You Go type)
- Modem: Input data rate: 19200 baud
- Tx data rate: 9600 bits/sec
- Interface: RS232
Power
- Input voltage: 12v DC nominal
- Supply current:
- 305 mA (during call)
- 110 mA (standby)
- 0.04 mA (quiescent)
Control
GSM controller is passive, so it must be dialled up - it cannot call out. Controller can be set to be on standby permanently, or to switch on (into standby mode) for set time periods (e.g for 30 mins every 6 hours).