Chc GPS Gnss Receiver I90/X12 GPS Navigation for Surveying

 SPECIFICATIONSGNSS Performance   (1)Channels                           624 channelsCommunication Integrated 4G modem LTE (FDD):B1,B2,B3,B4,B5,B7,B8,B20Network modemDC-HSPA+/HSPA+/HSPA/UMTS: B1, B2, B5, B8 EDGE/GPRS/GSM850/900/1800/1900 MHzGPSGalileoL1 C/A, L2C, L2P, L5E1, E5a, E5bGLONASS                         L1, L2BeiDou                               B1, B2, B3SBAS                                 L1Wi-FiBluetooth  ®                      v4.1QZSSL1, L2, L5GNSS Accuracies  (2) Horizontal: 8 mm+ 1 ppm RMSReal timeVertical: 15 mm+ 1 ppm RMSkinematics    (RTK)Initializationtime: < 10 s Initialization reliability: >99.9%Post -processing kinematics    (PPK)Horizontal: 2.5 mm+ 1 ppm RMSVertical: 5 mm+ 1 ppm RMSStandard Internal Rx/Tx: 410 - 470 MHz Transmit Power: 0.5 W to 2 WUHFradio                           Protocol: CHC,Transparent, TT450, 3ASLink rate: 9600 bps to 19200 bpsRange: Typical 3 km to 5 kmPost - processing static     Horizontal: 2.5 mm+ 0.5 ppm RMSVertical: 5 mm+ 0.5 ppm RMSCode  differentialPositioning rateHorizontal: 0.25 m RMSUp to 10 HzAutonomous                      Horizontal: 1.5 m RMS Vertical: 3 m RMSData storage                      32 GB internal memoryElectricalCold start: < 45 s Time  to  first   fix  (3)          Hot start: < 10 sSignal re-acquisition: < 1 sPower consumption          5 W (depending on user settings)RTK tilt - compensatedAdditional horizontal pole-tilt uncertaintytypically less than 10 mm+ 0.7 mm/° tilt                                     Hardware                                       159 mmx 150 mmx 110 mmSize  (L x W x H)EnvironmentIngress protection(6.3 in × 5.9 in × 4.3 in)Operating: -40°C to +65°C (-40°F to +149°F)Storage: -40°C to +85°C (-40°F to +185°F)IP67 waterproof and dustproof, protected from temporary immersionto depth of 1 mWeight                                1.26 kg (2.77 lb)Humidity                             100% condensationShock                                 Survive a 2-meter pole dropTilt sensorCalibration- free IMUfor pole- tilt compensation. Immune to magnetic disturbances.E-Bubble levelingFront panel                        4 LEDindicates 1.46'' OLEDDisplay/* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1