Glocom Gemini 128v
Product description
Glocom’s Gemini-128v is a vehicle-mounted, dual-channel Inmarsat GAN terminal. It supports two channels of high speed data (combined 128 kbps) and voice (mini-M) calls via the Inmarsat 3rd or 4th generation satellites while the vehicle is in motion (at speeds of up to 100 mph).
Product applications
- Live video (128kbps) from remote field to central office
- Remote, mobilised data communications centre
- Remote paramedic operation directed from central medical specialist/staff
- Live reporting on earthquake, forest fire, and other natural disaster events
Product uniqueness
- The world’s only single-antenna mobile GAN terminal with 128 kbps data capabilities;
- Double the bandwidth and speed of any other Inmarsat GAN terminals – at roughly the same physical dimension
- Maximum safety distance between antenna and operator (up to 500 feet) for battle field fixed site application
Service capabilities
The Gemini-128v provides all of the capabilities of two separate Inmarsat single channel GAN terminals in one physical unit. Each of the two channels may be used independently to make/receive voice or data calls, or the two channels can be used together to make/receive 128 kbps data calls. Total two channels in any combinations:
- 2 of Mini-M telephony voice : 4.8 kbps AMBE voice coding
- 2 of STU-III 2.4 kbps secure voice and data (optional)
- 2 of Inmarsat M4 ISDN/ST data at 64 kbps each
System configuration
Gemini-128v consists of three modules: ODU, PIU and IDU. ODU is the outdoor unit including an antenna and electronics within a fibreglass dome. IDU is the indoor unit which connects with the user’s peripheral equipment (e.g. ISDN phone, video conference unit, ISDN terminal adapter (TA), etc.). The IDU is powered by its own built-in rechargeable battery. The PIU is the power and interface module that supplies the ODU with power from the vehicle battery and bridges modulated data to and from the IDU/ODU.
Physical characteristics
Outdoor unit (ODUv)
- Housing: fibreglass radome inside useable space 690 mm (D) x 390 mm (H)
- Weight: 18 kg
- Mounting: bolt, magnet (optional)
- Components
- Antenna: directional RHCP antenna with self tracking stabilised platform
- Transceiver unit: PCB modules
- RF units: HPA, diplexer, LNA
- Stabiliser: ACU and step motor
- Cable to PIU: RG-58 coaxial cable, ODU connector type N, PIU connector type TNC
Power and interface unit (PIU-24v)
- Dimensions: 64 x 216 x 159 mm (H x W x D)
- Weight: 1 kg
- Components: DC/DC converter: 24V DC in, 24v output for IDU as battery charger and 48v for ODUv
- Multiplexer: modem: modulate/demodulate baseband data (IDU to/from ODUv)
Indoor console unit (IDU)
- Dimensions: 38 x 238 x 150 mm (H x W x D)
- Weight: 1.37 kg
- Components
- Lithium ion battery (5400 mAh, 14v)
- Terminal control unit: PCB unit
- ISDN interface cartridge
Radio frequency characteristics
- Transmit frequency: 1626.5 – 1660.5 MHz
- Receive frequency: 1525.0 – 1559.0 MHz
- Channel frequency spacing: 1.25 kHz steps
- G/T: -7 dB/K minimum
- EIRP: M4 HSD: 19-25 dBW in 2dB steps; Mini-M 8-14 dBW in 2 dB steps
External interfaces
- Telephone: RJ11 two-wire jacks, 600 ohms, with echo suppression and DTMF dialling
- ISDN interface:RJ45 (Euro S/T bus)
- Debug port: 3-pin RS422
Environmental characteristics
- Operating temperature: -25 to +55C
- Humidity: up to 95% at 40°C
- Precipitation: up to 50 mm/hr
- Wind Speed : up to 200 km/hr relative
- Icing: up to 25 mm (survival only)
- Vibration operational: random vibration of 1.05 g RMS in each of three perpendicular axes. Spectrum of vibration is 5 – 20 Hz: 0.02 g2/Hz, 20 – 150 Hz: -3dB/octave
- Vibration survival: random vibration of 1.7 g RMS in each of three perpendicular axes for 2 hours each. Spectrum at 5 – 20 Hz: 0.05 g2/Hz, 20 – 150 Hz: -3dB/octave
- Vehicle motion:
- Shock: 20g / 11ms half sine-wave shock
- Velocity: 110 km/hr maximum
- Turning rate: 40/s
Certifications
- Overall: meets or exceeds all specs in Inmarsat-M4 System Definition Manual (SDM).
- Electromagnetic compatibility. radiated: EN 55022 class B, conducted: EC801
- Inmarsat Type Approval, Certification No. 76GC73
Standard configuration
- Outdoor Unit, ODUv (1)
- 24v Power and Interface Unit, PIU-24v (1)
- Console Unit, IDU (1)
- ODU/PIU coaxial cable, C1 (15’)
- IDU/PIU cat-5 cable, C2 (25’)
- IDU/vehicle battery cable, C3 (12’)
- IDU battery charger cable, C9 (6 ’)
- ODUv bolt mounting kit (1)
Optional accessories
- Extra IDU/PIU cat-5 cable (50’ to 500’)
- STU-III Interface Option
- 12v Power Interface Unit (PIU-12v)
- Terminal adapter (ISDN-USB or others)
For more information on the Gemini-128v or to discuss your requirements in more detail, please get in touch.