System Specification

Item: GH-615B
Number of Waypoints: 100
Tracking point: 60000
Display Size: 24.9 x 39.88 (H x W in mm.)
Display type: Black & White LCD
Pixels (H x W): 80 x 120
Unit Weight: 72.87g
Waterproof Standard: IPX7
Unit Size: 76.5 x 61.5 x 17.5 (L x D (Φ)x H  in mm.)
Backlit Display: Single level
Operating temperature: -10 ° to 60 ° C
Humidity: 5% to 95% Non-condensing
Voltage: 3.7V for a rechargeable battery, 5V for charging input.
Charging connector:  DC 5V
Battery: Rechargeable 750mAh Li-ion battery.
Power Consumption:
GPS, HBM & Backlight off: 25mA
GPS on (no fixed): HBM & Backlight off: 72mA
GPS on (3D fixed): HBM & Backlight off: 64mA
GPS on (no fixed): HBM & Backlight oon: 90mA
Battery life:
9.5 hours (3D fix, GPS on; HBM & Backlight off)
7.5hours (3D fix, GPS, HBM & Backlight on)
21 hours (GPS, HBM off; Backlight off)
Connect to PC Interface: Probe Pin to USB Interface
Charger: Mini USB 350mA, 3 hours completed


GPS Parameters General

GPS Chipset: SiRF Star III
Frequency: L1, 1575.42 MHz
C/A code: 1.023 MHz chip rate
Channels: 20 channel all-in-view tracking
Antenna Type: Built-in patch antenna
Position: 10 meters, 2D RMS, 5 meters, 2D RMS, WAAS enabled
Velocity: 0.1 m/s
Time: 1 us synchronized to GPS time
Default datum: WGS-84
Reacquisition: 0.1 sec., average
Hot start: 1 sec., average
Warm start: 38 sec., average
Cold start: 42 sec., average
Altitude: 18,000 meters (60,000 feet) max.
Velocity: 515 meters/ second (1000 knots) max.
Acceleration: Less than 4g
Jerk: 20 m/sec3