Libra II is a fully integrated satellite communication system specifically designed for seismic and environmental studies. Libra II is an IP communication system capable of collecting continuous data and transmitting from the remote station directly to the central hub via geostationary satellite.
Because Libra II was specifically designed for seismic and environmental applications, the system provides economical operating costs and low power requirements. Each remote station is equipped with a Cygnus Transceiver, consuming a mere 6W of power; making it ideal for remote, solar powered sites. Data can be transmitted from any number of remote sites simultaneously to more than one Carina 105 central hub with no additional satellite lease costs. Continuous seismic or environmental data can be transmitted from a 15-station network for only $5,800 per year.
Comprehensive state-of-health and diagnostic information are continuously acquired, monitored and presented via a series of web pages. Additional software is provided to support multicast firmware uploads via the satellite connection.
Because Libra II was specifically designed for seismic and environmental applications, the system provides economical operating costs and low power requirements. Each remote station is equipped with a Cygnus Transceiver, consuming a mere 6W of power; making it ideal for remote, solar powered sites. Data can be transmitted from any number of remote sites simultaneously to more than one Carina 105 central hub with no additional satellite lease costs. Continuous seismic or environmental data can be transmitted from a 15-station network for only $5,800 per year.
Comprehensive state-of-health and diagnostic information are continuously acquired, monitored and presented via a series of web pages. Additional software is provided to support multicast firmware uploads via the satellite connection.
- Proven technology with over 1200 remote sites and 40 hubs in operation around the world
- Stations can be placed in any location regardless of terrain, infrastructure or distance from central hub
- Continuous data communication to user’s central processing facility
- Total station power as low as 6 watts significantly reduces solar system costs and minimizes remote station footprint.
- Use-case design provides economical satellite bandwidth rental costs
CYGNUS 205 TRANSCEIVER | |
USER PORTS | |
| NMX bus port | Supports up to two Trident 305 24-bit digitisers (6 channels total) |
| Serial Ports | Two RS232 ports with SLIP interface software |
| SOH | Two general purpose SOH voltage inputs (12-bit) |
| Ethernet Port | 10/100 Base-T, Supports TCP/IP, UDP/IP (unicast and multicast) and HTTP communications |
ANTENNA | |
| Antenna Size | 1.2m diameter typical. 0.6m,0.98m,1.8m and 2.4m available |
| Mount Option | Penetrating kingpost mount or non-penetrating mount with ballast trays |
| Transmit Gain | 43 ‘43dBi@ 14.125Ghz |
| Polar Discrimination on Axis | >30 dB |
| Polarization | Linear |
| Receiver G/T for 20°Elevation | >22 dB/K |
CYGNUS MODEM | |
| Operational Band | All standard satellite bands supported: (Ku-band, Extended Ku-band and C-Band |
| Transmit Frequency | 14.0-14.5 GHz (Ku-band)
13.75-14.25 GHz (Ext. Ku-band) 5.925-6.425 GHz (C-band) |
| Receive Frequency | 10.95-11.45 GHz (Ku-band)
11.7-12.2 GHz (Ku-band) 12.25-12.75 GHz (Ku-band) |
| Transmit Power | 0.5W typical operating, adjustable in 0.1 dB steps
High power options available 90KHz typical, -26 dB at f0 +/- 50KHz |
| Occupied Bandwidth | Software Selectable:
112Kbps (QPSK rate 7/8 FEC) 64 Kbps (QPSK rate 1/2 FEC) 32 Kbps (BPSK rate 1/2 FEC) |
| Data Rate (Modulation) | 2GB standard (~6 weeks, 3-Channel, 100 sps) |
| Remote Site Transmission Buffer | 4GB (~3 months), 16GB (~1-year) other options available |
TIMING | |
| Timing System | Internal DCXO clock disciplined to GPS |
| Time Accuracy | <100ms |
| GPS Receiver | Internal 12 Channel Receiver |
| GPS Antenna | External active antenna supplied with cable |
CONFIGURATION | |
| Web-based Interface | Configured using Mozilla® Firefox® 3.6 or later via HTTP connection either remotely via satellite or locally via Ethernet |
ENVIRONMENTAL | |
| Operating Temperature | -20°C to +60°C |
| Humidity | 0 to 100% |
| Environment | Self-contained, all-outdoor unit Meets IP-67 standard
Based on 12V operation Power consumption varies with data rate and duty cycle; consult factory for more information |
| Electromagnetic Compatibility | Complies with FCC Part15, EN55022 and EN55024 |
LIBRA TRANSMISSION PROTOCOL | |
| Satellite | Compatible with standard and extended Ku-band satellites as well as C-band satellites Complies with INTELSAT GX standard |
| Remotes per Carrier | Configurable via TDMA table.Typically 16-stations per 100 kHz carrier |
| Hub Redundancy | Supports multiple central hub configuration with automatic backup transition capability |
| Carrier Access | Centrally configured, fixed assignment TDMA |
| Remote Transmission | Transmission slots referenced to UTC and indepen- dently configurable for each station within TDMA frame |
| Remote Transmission Modulation | Independently configurable for each station |
| Outbound Traffic | Transmitted within allocated TDMA time slot |
| TDMA Frame Duration | 1 to 10 seconds |
| Error Correction | LDPC FEC for reduced power and antenna size; Selective retransmission requests: missing data packets are requested until received or are no longer available in the remote buffer |
| Threshold, Eb/No | FEC rate 1/2: 3 dB (BER <= 10-5)
FEC rate 7/8: 5 dB (BER <= 10-5) |
| Data Transport Protocol | UDP/IP protocol |
POWER | |
| Power Voltage | 10-36 VDC |
| Modem Power Consumption | 3.1W |
CARINA 105 HUB | |
ANTENNA | |
| Antenna Size | 2.4 or 3.8 m standard 4.5 m also available |
| Mount Options | King post, pedestal, non-penetrating, tripod roof mount |
| IFL Cables | 35m transmit and receive cable set |
CARINA MODEM | |
| Tx Power | 5 W max, 0.5 W typical operating Adjustable in 0.1 dB steps |
| Transceiver | Complies with INTELSAT GX standard
Compatible with standard and extended Ku-band as well as C-band satellites |
| Data Rate (Modulation) | Software selectable:
112 Kbps (QPSK rate 7/8 FEC) 64 Kbps (QPSK rate 1/2 FEC) 32 Kbps (BPSK rate 1/2 FEC) |
| Hub Site Data Buffer | 4 GB standard |
| Data Output | 10/100 Base-T Ethernet port |
| Equipment Mounting | 1U 19" rack-mount chassis |
| Operating Temp. | -20°C to +60°C |
| Electromagnetic Compatibility | Complies with FCC Part 15, EN55022 and EN55024 |
RF SPLITTER/COMBINER | (Used in networks where more than one carrier is necessary) |
| Modems Supported | Supports 2 to 4 Carina 105 transceivers operating from a single BUC |
| Mounting | 2U 19" rack-mount chassis |
WAVEGUIDE COMBINER | |
| BUCs Supported | Supports 2 to 4 BUCs sharing a single antenna |
| Port Options | 2 or 4 Port |
NETWORK MANAGEMENT AND CONTROL | |
CONFIGURATION AND REAL-TIME MONITORING (CYGNUS 205,CARINA 105) | |
| Software | Web interface for modem configuration, monitoring and SOH data display. Data accessible to local web browser or via VSAT connection to central site |
| Firmware | Upgradeable locally or over satellite. Firmware load may be deployed to multiple units concurrently via Antares network management software |
DATA ACQUISITION (CYGNUS 205, CARINA 105) | |
| Software | Modem includes Apollo data acquisition software with multicast communications and application level error correction. Requires central site Apollo Server software. |
| Protocols | UDP/IP unicast and multicast with application level retransmission error correction. |
SUPPORTING PRODUCT INFORMATION | |
| Data Acquisition | Apollo Server central data acquisition software |
| Network Management | Antares central site network management software |
Specifications subject to change without notice