H220 Integrator Guide
Chapter 1 - Introduction
Page 4 of 28
The H220 GNSS engine is a low-level module intended for custom integration with the following
general integration requirements:
Regulated power supply input (3.3 VDC ± 5%) and 1.7 mA continuous current
Low-level serial port (3.3 V CMOS) and USB port communications
Radio frequency (RF) input to the engine from a GNSS antenna is required to be actively
amplified (10 to 40 dB gain)
GNSS antenna is powered with a separate regulated voltage source up to 15 VDC
maximum
Antenna input impedance is 50 Ω
Antenna voltage input is 15 VDC maximum
Antenna gain input range is 10 to 40 dB
Features of the H220
Some notable features of the H220 are:
Multi-channel GNSS engine (12 L1CA GPS, 12 L1P GPS, 12 L1 GLONASS, 22 B1
BeiDou, 12 E1 Galileo, 4 L1 QZSS and 3 channels dedicated to SBAS tracking)
Sub-meter horizontal accuracy 95%
Raw measurement output (via documented binary messages)
Position and heading update rates of 50 Hz maximum
Quick times to first fix
Four full-duplex serial ports, a dedicated RTCM input port, and two USB ports (one USB
host, one USB device)
1 CAN NMEA2000, ISO-11783
1 PPS timing output
Event marker input
L-band capable
Fast RTK acquisition and reacquisition times
10 cm RTK-enabled heave accuracy
Improved heading accuracy with different baseline lengths (up to 5 m)
Same form factor as Hemisphere GNSS' Crescent® Vector II OEM board
Note:
See
Appendix B, Technical Specifications
for complete H220 specifications.
Configuring the H220
The H220 has four communication ports: A, B, C, and D. Ports A, B, and C are fully independent
and can have different messages output at different rates. You can configure each of these ports
for external correction input or output binary message information or RTCM corrections from an
outside source. You can also configure the output of ports A, B, or C through any of these ports.
Configure the baud rates if necessary; the default is 19200 for Ports A, B, and C.
Port D is reserved for RTCM differential corrections and may be used by the Hemisphere
GNSSSBX-4™ board (not included with H220).
You can configure the H220 to use the following differential operation modes:
SBAS
Beacon (with optional SBX-4 board)
L-band
External corrections
