- 3.0m, 3.4m or 3.7m GRP parabolic dish.
- 200km/h survival wind speed.
- Waterproof housing with white powder coat finish.
- Supplied with up to 100m of RG213U co-axial cable, with connectors.
- Automatic carrier search.
- Housed in external unit with frame synchroniser and USB interface.
- Built-in 110–240V AC power supply.
- Built-in signal level display for easy dish alignment.
- High-performance design featuring PLD-based logic processing and PIC microprocessor technology.
- Performs frame synchronisation and buffers data in FIFOs.
- Transfers buffered data to computer via 12Mbit/s USB connection.
- Housed in external unit with BPSK demodulator.
- Supplied with USB cable.
- Minimum of Pentium 4 or Athlon XP processor with USB, dedicated AGP 4× graphics card and Windows 2000 or XP Professional.
- Driver for frame synchroniser and USB interface.
- Dartcom GVAR Ingester software.
- Dartcom MacroPro software for automatic image processing.
- Dartcom iDAP software for display and processing.
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Specifications of GVAR antenna:
Dish diameter
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3.0m, 3.4m or 3.7m depending on requirements
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Reflective material
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GRP 8 segment, parabolic
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Finish
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White anti-solar reflective
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Gain @ 1700MHz
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32.0dBi, 33.0dBi or 33.75dBi respectively
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Beamwidth
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4.3°, 3.8° or 3.5° respectively
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F/D ratio
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0.3, 0.36 or 0.37 respectively
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Operational wind speed
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72km/h (200km/h survival)
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Specifications of integrated feed and downconverter unit:
RF input frequency
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1685.7MHz
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RF input bandwidth
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Bandpass and Combline filters, 20MHz
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Downconverter gain
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70dB nominal
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IF output frequency
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70MHz
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Power requirements
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+15V DC @ 700mA surge, 350mA operational
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Polarisation
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Linear, phase rotatable
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Frequency stability
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±1.8kHz typical, oven controlled
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IF output connector
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BNC (N-type optional)
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Finish
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White powder coat, waterproof
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Environmental
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–20°C to +60°C
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Specifications of BPSK demodulator:
IF input frequency
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70MHz
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Bit rate
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2.11Mbit/s
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Loop bandwidth
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3% of centre frequency
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Capture range
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Automatic phase lock, ±250kHz
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Input level
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–20dBM to – 60dBM
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Input impedance
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50Ω
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Bit error rate
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<10–9 @ –50dBM input (3.7m dish)
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Demodulator type
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BPSK, digital phase lock
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Output
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0° clock and data
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Specifications of frame synchroniser and USB interface:
Input
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Clock and data from BPSK demodulator
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Bit rate
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2.11Mbit/s
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Output
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USB at up to 12Mbit/s
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Specifications of ingest, display and processing computer:
Mainboard
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Pentium 4 or Athlon with USB and AGP 4×
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Storage
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512MB RAM, 80GB hard disk
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Removable media
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CD-RW drive, 1.44MB floppy disk drive
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Display
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AGP 4×graphics card, 17" flat panel display
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Input devices
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Keyboard, mouse
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Operating system
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Windows 2000 or XP Professional
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