Additional Information – HMGS1A10C Rev 1-0
The ability to track American GPS, Russian GLONASS and Chinese BeiDOU navigation satellites simultaneously, enhanced receiver sensitivity and active antenna result in fast time-to-first-velocity-calculation as well as the ability to operate in the harshest RF environments such as canyons and cities.
Last known position and satellite information critical to fast start-up are battery backed in case of power failure.
Three dimensional velocity calculations are acuurate to 0.2km/h and pulse output rates are updated 10 times per second. The device is fully configurable and offers following features:
- 1000 to 10,000 pulses per kilometer (ppk) settable via adjustment screw.
- Fixed 2000, 4000, 8000 or 50,000 pulse per kilometer option.
- Option to add back distance lost in tunnels.
The speed sender is supplied with an external bulkhead mount antenna (active) for challenging installations.
The speed sender works equally well with speedometers calibrated in kilometers per hour or miles per hour.
Power to the unit and pulse outputs are provided through four colour-coded wires.
Red and green LEDs are provided to give the user status information. At power on, the red LED will begin to flash at 2Hz, indicating that the unit has power and is searching for satellites. When satellites have been acquired the red LED will remain on. The green LED flashes in sympathy with the pulse output and so will flash faster as the vehicle speed increases.
- Pulse rate: variable (1000ppk to 10 000ppk) or fixed 2000, 4000, 8000, 50,000
- General: 56 channel tracking receiver, battery backup 12days
- Update rate: 10Hz
- Accuracy, horizontal: < 5m (50%), < 8 (90%)
- Accuracy, altitude: < 10m (50%), < 16 m (90%)
- Accuracy, velocity: < 0.06m/sec = 0.22km/h
- Acquisitions, after loss of lock: < 2s (90%)
- Acquisitions, first time power applied: < 38s (50%), < 42s (90%)
- Acquisitions, temporary loss of power: < 10s (50%), < 13s (90%)
- Operational limits, altitude: 18000m
- Operational limits, velocity: 300km/h
- Input voltage: 6V to 36V
- Power consumption: 240mW (12V, 20mA)
- Battery backup: 12 days
- Output pulse: peak to peak voltage: 5V, DC 2.5V
- Output pulse: maximum current drain: 25mA
- 50mm (L), 67mm (W), 21mm (H)
- Antenna: 47mm (Dia), 27mm (H)
- Antenna cable length: 3-5m
- Operating temperature: -40°C to +85°C
- Storage temperature: -55°C to +105°C
- Humidity: 5% to 95% R.H. non condensing at 60°C
- Red input voltage (6V to 35V)
- Black ground (0V)
- Green pulse output
- Blue inverted pulse output
RF interface (where applicable):
- SMA (compatible connector supplied with antenna