Description The JS-X9 is a high-performance multi-function OEM GNSS receiver purpose-built for dual-antenna operation — powered by a Septentrio chipset with over 2 million active correlators. It delivers centimetre-level RTK positioning with simultaneous heading, pitch, and roll output in a compact 71.8 × 50.2 × 12.5 mm module. With built-in Ethernet connectivity , 3× UART, and full AIM+ anti-interference suite, it is designed for drones, autonomous robots, precision control, intelligent mapping, and unmanned vehicles.
Key Features Septentrio Inside — AIM+ active interference mitigation · APME+ multipath suppression · IONO+ scintillation protection · OSNMA anti-spoofing · LOCK+ robust tracking · RAIM+ integrity monitoring 544 hardware channels with over 2 million active correlators for full-constellation, tri-frequency trackingSupports GPS, BDS, GLONASS, NavIC, Galileo, QZSS and SBAS across all signal bands Dual-antenna by design : MAIN + AUX1 ports for simultaneous positioning and heading/pitch/roll — no magnetic sensor required0.6 cm + 0.5 ppm RTK horizontal accuracy; 7 s initialization100 Hz update rate; < 10 ms latency (99.9%) — heading 0.15° @ 1 m · 0.03° @ 5 mBuilt-in Ethernet + 3× UART + USB Type-C + Micro SD (up to 32 GB) Configurable as base station or rover receiver Stable tracking during high-frequency vibration and fast movement (≤ 4 g) Key Specifications Item Value GNSS Engine Septentrio (>2M active correlators) Tracking Channels 544 hardware channels RTK Accuracy (H) 0.6 cm + 0.5 ppm (RMS) RTK Accuracy (V) 1 cm + 1 ppm (RMS) RTK Init Time 7 s Update Rate 100 Hz (navigation & measurements) Latency < 10 ms (99.9%) Heading @ 1 m / 5 m 0.15° / 0.03° (RMS) Pitch/Roll @ 1 m / 5 m 0.25° / 0.05° (RMS) Timing (xPPS) 5 ns Event Accuracy < 20 ns Velocity Accuracy 0.03 m/s Baud Rate 115200 – 4M bps (default 115200) Antenna Ports MAIN (positioning) + AUX1 (heading/pitch/roll) Antenna Bias 3.0 – 5.5 V DC (both ports) Dimensions 71.8 × 50.2 × 12.5 mm
GNSS Performance Signal System Frequencies GPS L1 C/A · L1C · L2C · L2 P(Y) · L5 BeiDou (BDS) B1I · B1C · B2a · B2I · B3I GLONASS L1 C/A · L2 C/A · L3 · L2P Galileo E1 · E5a · E5b NavIC L5 QZSS L1 C/A · L1C · L2C · L5 SBAS EGNOS · WAAS · GAGAN · MSAS · SDCM
Parameter Value Tracking Sensitivity 20 dB-Hz Acquisition Sensitivity 33 dB-Hz Cold Start TTFF < 45 s Warm Start TTFF < 20 s Reacquisition 1 s Standalone Accuracy (H/V) 1.2 m / 1.9 m SBAS Accuracy (H/V) 0.6 m / 0.8 m DGNSS Accuracy (H/V) 0.4 m / 0.7 m
Interface & Connectivity Pin Name Type Description 1, 5, 9, 20, 23 GND Ground System ground reference 10, 13 VCC Power GNSS power input 4.5 – 15.0 V 24 VCC Power Main power input 4.5 – 15.0 V 2 EVENTA Input External event input, 5V tolerant 3 1PPS Output Pulse-per-second timing output (5 ns) 4 NRST Input Hardware reset 7 / 8 RXD1 / TXD1 I/O Serial port 1 receive / transmit 11 / 12 RXD2 / TXD2 I/O Serial port 2 receive / transmit 21 / 22 RXD3 / TXD3 I/O Serial port 3 receive / transmit 14 / 15 RX− / RX+ Input Ethernet receive differential pair 16 / 17 TX− / TX+ Output Ethernet transmit differential pair 25 MAIN RF Input Main GNSS antenna — positioning (3.0 – 5.5 V DC) 26 AUX1 RF Input Aux antenna — heading/pitch/roll (3.0 – 5.5 V DC) 27 Micro SD I/O TF card storage up to 32 GB 28 TYPE-C I/O USB 2.0 data + 5 V power 18, 19 N-LED / W-LED Output Reserved status indicator LEDs
Electrical & Operating Conditions Item Value Supply Voltage 4.5 – 12.0 V Acquisition Current 330 mA typical @ 5.0 V Tracking Current 320 mA typical @ 5.0 V Antenna Supply 150 mA max @ 5.0 V VCC Ripple 50 mV max ESD Protection 2000 V HBM Operating Temperature −40°C to +85°C Storage Temperature −55°C to +85°C Humidity 5 – 95% RH (non-condensing) Dynamic ≤ 4 g Max Altitude 18,000 m Max Speed 515 m/s
Physical Item Value Dimensions 71.8 × 50.2 × 12.5 mm (±0.3 mm)
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