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GNSS K20s IMU characteristics 
■ 1598
GNSS channels 
-GPS L1C/A, L1C, L2C, L2E, L5 
-GLONASS L1C/A, L2C/A, L2P, L3 
-BeiDou B1, B2, B3 
-Galileo GIOVE-A, GIOVE-B, E1, E5A, E5B 
-SBAS L1C/A, L5 
■Initialization: time
<10s, reliability >99.99% 
■Supported
data formats: 
CMR+, CMRx, RTCM 2.1, RTCM 2.3, RTCM 3.0, RTCM 3.1, RTCM 3.2 
■Output
data formats: 
NMEA 0183, PJK plane coordinates, Binary code, Trimble GSOF 
Positioning Accuracy 
Code differential GNSS positioning 
■Horizontal:
±0.25m+1ppm 
■Vertical:
±0.50m+1ppm 
■SBAS
positioning accuracy: typically<5m 3DRMS 
Static 
■Horizontal:
±2.5mm+0.5ppm 
■Vertical:
±5mm+0.5ppm 
Real-time kinematic (RTK) 
■Horizontal:
±8mm+1ppm 
■Vertical:
±15mm+1ppm 
Network RTK 
■Horizontal:
±8mm+0.5ppm 
■Vertical:
±15mm+0.5ppm 
RTK
initialization time 
■2~8s 
Physical characteristics 
Size 
■17.5
x 17.5 x 8.3 cm 
Weight 
■1.33
kg (2 batteries included) 
User interface 
■Five
Indicator lights 
■Two
buttons 
■Linux
System 
I/O
interface 
■5PIN
LEMO external power port+RS232 
■7PIN
external USB(OTG)+Ethernet 
■Bluetooth
2.1+EDR standard 
■Bluetooth
4.0 standard, support android, ios connection 
Memory 
■8GB
SSD internal storage 
■Support
external USB storage (up to 32 GB) 
■Automatic
cycle storage 
■Changeable
record interval 
■Up
to 50Hz raw data collection 
Operation 
■RTK
rover & base 
■RTK
network rover: VRS, FKP, MAC 
■NTRIP,
Direct IP 
■Post-processing 
Environmental characteristics 
■Operating
temperature: -45°to +60°C 
■Storage
temperature: -55°to +85°C 
■Humidity:
100% condensing 
■IP67
waterproof, sealed against sand and dust 
■Drop:
2m pole drop on concrete 
Power characteristics 
■Buit-in
Li-Ion battery, 7.4 V, 10000 mAh 
■Battery
life:>14h (static mode)>10h (internal UHF base mode)>12h (rover mode) 
■External
DC power: 9-25 V 
UHF
Radio characteristics 
■Built-in
radio 120 Channels 
■Frequency
Range 410-470MHz 
■Protocol:TrimTalk450s,
TrimMark3, SOUTH (KOLIDA) 
■1W/2W/3W
switchable 
■typically
working range 7-8km 
■“Barrier-Free”
Measurement Technology: Repeater/ Router/ CSD mode 
Cellular module characteristics 
■WCDMA/CDMA2000/TDD-LTE/FDD-LTE
4G 
■Compatible
with 4G GPRS/EDGE 
WebUI 
■Configure
and monitor receiver by web server via Wi-Fi or USB cable 
NFC 
■Close
range (shorter than 10cm) automatic pair between receiver and controller (need
NFC chip in controller) 
Wifi 
■802.11
b/g standard 
■Hotspot:
allow device to access in 
■data
link: broadcast differential data 
Voice Guide 
■intelligent
voice technology provides status indication and operation guide 
■Chinese,
English, Korean, Russian, Portuguese, Spanish, Turkish and user define 
Standard system components 
■K20s
IMU Receiver 
■Li-Ion
battery 
■Charger
and adapter 
■All-direction
antenna 
■Tape
measure 
■30
cm pole extension 
■7-pin
to OTG cable 
■Engineering
Star (Windows) 
■Engineering
Star (Android) 
■1
year warranty 
Optional system components 
■External
Radio (410-470 MHz, 5-35W) 
■Battery
Case SA-6003 
■Data
collectors 
-T17 (Windows) 
-H6 
(Android) 
-s50 (Android) 
■Field
software 
-Field Genius (Windows) - SurvX(Android) 
■1-2
year warranty extension 
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