In this world full of complex and dynamic environments, with the development of advanced mechanical control and navigation solutions, ER-321 is one of the most high-end GNSS orientation and positioning module.
Adapting to dual antenna port, it brings ER-321 a series of additional functions. Including fast, high accuracy of short baseline orientation and RTK Positioning, L-band China precision satellite based enhancement of receiving signals from, for the ups and downs of the RTK, low power consumption and precise timing.
ER-321 features with flexibility, low cost. This GNSS module uses high-end multipath suppression technique, and provides an extended support for BDS L1/L2 to GPS/GLONASSRTK B1/B2/B3 performance.
GNSS performance | |
Receiving type: | GNSS multi frequency RTK carrier phase |
Can receive signal: | BDS,GPS,GLONASS,Galileo& QZSS |
Channel number: | 372 |
GPS sensitivity: | -142dBm |
SBAS tracking: | 3 channel, parallel tracking |
Update rate: | Standard 20Hz, 5Hz optional |
Accuracy: | Level (RMS) Gao Cheng (RMS) |
RTK: | 10mm + 1ppm 20mm + 1ppm |
SBAS (WAAS): | 0.25m 0.50m |
Autonomous positioning, no SA: | 1.2m 2.5m |
Direction finding accuracy: | <0.17˚ rms @ 0.5m Antenna spacing |
<0.09˚ rms @ 1.0m Antenna spacing | |
<0.04˚ rms @ 2.0m Antenna spacing | |
<0.02˚ rms @ 5.0m Antenna spacing | |
<0.01˚ rms @ 10.0m Antenna spacing | |
Roll / roll precision: | <1˚ rms |
Fluctuation precision: | 30 cm RMS (DGPS), 5 cm RMS (RTK) |
Timing accuracy (1PPS): | 20ns |
Turning rate: | The maximum to 100 or /S |
cold boot: | <40 s (no calendar or clock) |
Warm start: | <20 s(or a typical calendar clock) |
Hot start: | <5 s(a typical calendar, clock and location) |
Heading lock: | <10 s typical (hot start) |
Antenna input resistance: | 50Ω |
Communication | |
Serial port: | 4 serial CMOS 3.3V (3 main serial ports, 1 only supports differential serial port, 1 Host USB, 1 Device USB |
Baud rate: | 4800 - 115200 |
Differential input / output protocol: | RTCM SC-104,L-Dif™,RTCM v2.3,RTCM v3 (RTK),CMR,CMR+ |
Data input / output protocol: | NMEA0183, Crescent binary, L-Dif |
Timing output: | CMOS 1PPS, low level, falling edge synchronous, 10K, 10pF load |
Power Supply | |
Input voltage : | 3.3VDC ± 5% |
power waste: | <3.9W @3.3V (L1/L2 GPS/GLONASS;L-band); |
<3.2W @3.3V (L1/L2 GPS/GLONASS) | |
electric current : | <1180mA @3.3V (L1/L2 GPS/GLONASS;L-band); |
<970mA @3.3V (L1/L2 GPS/GLONASS) | |
Environmental Science | |
working temperature: | -40 ~ 85℃ (-40 ~ 185°F) |
Storage temperature: | -40 ~ 85℃ (-40~ 185°F) |
Humidity: | 95% no condensation (integrated into the system) |
Physics | |
Size: | 152.4L × 71.1W × 16.3H mm |
Weight: | 105g |
Status indicator (LED): | Power supply, first and second GPS lock, differential lock, DGPS position, heading, RTK lock, L-Band |
Power / data connector: | 70-pin male head pin, 1.27mm space |
Antenna connector: | MCX, female head, straight shape |
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To speed up the course calculation initialization time, while providing the angle of pitch and roll
