Difference between revisions of "GEM1305"
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[[File:GEM1305-main-a1.png|500px|frameless|GEM1305 dual-band RTK smart antenna]] | [[File:GEM1305-main-a1.png|500px|frameless|GEM1305 dual-band RTK smart antenna]] | ||
CON0(J6): 1.25mm pitch 6P connector | |||
* | Pinout: | ||
* GND | |||
* NC | * NC | ||
* | * Rx of GNSS module | ||
* | * Tx of GNSS module | ||
* | * 5V, input,max current:200mA | ||
CON1(J5): Pin header connector 2.54mm | |||
* GND | * GND | ||
* NC | * NC | ||
* | * Tx of GNSS module | ||
* | * Rx of GNSS module | ||
* 5V | * 5V | ||
[[File:GEM1305-test-1.png|200px|frameless|GEM1305 test]] | [[File:GEM1305-test-1.png|200px|frameless|GEM1305 test]] |
Revision as of 16:59, 16 October 2024
GEM1305-4540A0
GEM1305 is a high performance dual-band RTK module with build-in antenna, which is based on CYNOSURE series chipset.
It supports BDS-3
signals, along with global civil navigation systems, including GPS, BDS, GLONASS, Galileo, QZSS,
and SBAS.
Feature
- Supports GPS, BDS, GLONASS, Galileo, QZSS, and SBAS
- Integrated Real Time Kinematics (RTK)
- State-of-the-art low power consumption design
- Supports multi-band multi-system high precision raw data output, easy for 3rd party integration
- The best cost-effective high precision GNSS positioning solution integrated with antenna
- Compact size 55*55*15mm with high performance
P/N | Details |
---|---|
GEM1305-4540A00 | Based on CYNOSURE III GNSS SoC |
GEM1305-4540A01 | Based on CYNOSURE IV GNSS SoC |
Specifications
Antenna
Item | Specs |
---|---|
Frequency Range(MHz) | GPS/QZSS L1,L5, BDS B1,B2, GLONASS L1, GALILEO E1/E5a |
Polarization | Right-hand circular |
Gain(dBi) | 90° L1≥5.5 L2≥5 L5≥2.5 |
Phase center error(mm) | ≤±2.0 |
Axial Ratio (dB) | 90°≤3.0 |
LNA Gain(dB) | 38±2 |
V.S.W.R | ≤2.0 |
Noise Figure (dB) | ≤1.8 |
DC Voltage (V) | 5.0~5.5 |
Current (mA) | ≤80mA |
Impedance(Ω) | 50 |
Relative Humidity | 95% |
Operating Temperature(℃) | -40~+85 |
Storage Temperature (℃) | -55~+85 |
Dimensions(mm) | 55 x 55 x 13 |
Weight (g) | 50g |
GNSS
Parameter | Specifications | ||
---|---|---|---|
Constellations | BDS, GPS, QZSS, GLONASS, Galileo, NavIC, SBAS | ||
Channel | 128 | ||
Update rates | 10Hz | ||
Position accuracy | GNSS | 1.0m CEP | |
SBAS | <1.0m CEP | ||
RTK | 1.0 cm + 1 ppm (H) 2.0 cm + 1 ppm (V) | ||
Velocity & Time accuracy | GNSS | 0.05 m/s CEP | |
1PPS | 20ns RMS | ||
TTFF | Hot start | 1s | |
Cold start | 27s | ||
RTK | Convergence time | <10s | |
Reliability | >99.9% | ||
Sensitivity[1] | Cold start | -148 dBm | |
Hot start | -155 dBm | ||
Reacquisition | -158 dBm | ||
Tracking & navigation | -165 dBm | ||
Protocol | NMEA-0183 | ||
RTCM 2.X, RTCM 3.X | |||
Baudrate | 115200 bps, by default | ||
Operating condition | Main supply | 1.75V to 3.63V | |
Digital I/O supply | 1.75V to 3.63V | ||
Backup supply | 1.62V to 3.63V | ||
Power consumption | Tracking | GNSS | 30 mA @ 3.3V |
Single system | 18 mA @ 3.3V | ||
Standby | Data backup | 16 uA | |
RTC | 1.4 uA | ||
Serial interface | UART | 2 | |
SPI[2] | 1 | ||
I2C[2] | 1 | ||
Operating limit | Velocity | 515 m/s | |
Altitude | 18,000m | ||
Environmental conditions | Operating temp. | -40°C to +85°C | |
Storage temp. | -40°C to +90°C | ||
Humidity | 95% RH |
[1] tested with a good external LNA
[2] Supported upon request with special firmware
Hardware Description
CON0(J6): 1.25mm pitch 6P connector Pinout:
- GND
- NC
- Rx of GNSS module
- Tx of GNSS module
- 5V, input,max current:200mA
CON1(J5): Pin header connector 2.54mm
- GND
- NC
- Tx of GNSS module
- Rx of GNSS module
- 5V
Package list
- GEM1305 receiver
- USB-to-Serial test cable (CH340-based,Red:5V Black:GND Green:Tx White:Rx)