Technical Specifications

This chapter mainly introduces the technical specifications of Oscar Trek GNSS receiver, TC80 Controller , external radio and internal radio whip antenna.

Oscar Trek GNSS receiver

Table 3.1 Oscar Trek GNSS receiver performance

GNSS Performance
Position accuracy(RMS)	Single Point Positioning	1.5m (Horizontal)
		3.0m (Vertical)
	DGPS Positioning	0.25m (Horizontal)
		0.5m (Vertical)
	High Precision Static	2.5mm+0.1ppm (Horizontal)
		3.5mm+0.4ppm (Vertical)
	Static & Fast Static	2.5mm+0.5ppm (Horizontal)
		5mm+0.5ppm (Vertical)
	Post Processed Kinematic	2.5mm+1ppm (Horizontal)
		5mm+1ppm (Vertical)
	Real Time Kinematic	8mm+1ppm (Horizontal)
		15mm+1ppm (Vertical)
	Network Real Time Kinematic	8mm+0.5ppm (Horizontal)
		15mm+0.5ppm (Vertical)
Observation accuracy (zenith direction)	C/A code	10cm
	P code	10cm
	Carrier phase	1mm
Time To First Fix (TTFF)	Cold start	<35s
	Warm start	<10s
Reacquisition	<1s
Tilt compensation accuracy (within 60° )	≤2cm
Timing accuracy (RMS)	20ns
Velocity accuracy (RMS)	0.03m/s
Initialization (typical)	4s
Initialization reliability	>99.99%
System & Data
Operating system	Linux
Storage	built-in 16GB/8GB
Data format	CMR, CMR+ (GPS only), RTCM 2.3, RTCM3.0, RTCM3.1, RTCM3.2
Data output	RINEX, NMEA-0183, Tersus Binary
Software Support
Tersus Nuwa, MicroSurvey FieldGenius
Communication
Cellular	4G LTE/WCDMA/GSM
Cellular bands	FDD LTE 1,3,7,8,20,28A \	2,4,5,12,13 TDD LTE 38,40,41 \	WCDMA 1,8 \
Network protocols	Ntrip Client, Ntrip Server, Tersus Caster Service (TCS)
Wi-Fi	802.11b/g
Bluetooth	4.1
Internal radio	RF transmit power	0.5W/1W/2W
	Frequency	410MHz ~ 470MHz
	Operating mode	Half-duplex
	Channel spacing	12.5KHz / 25KHz
	Modulation type	GMSK, 4FSK
	Air baud rate	4800/9600/19200 bps
	Distance (typical)	>5km
	Radio protocols	TrimTalk450, TrimMark 3, South, Transparent, Satel
USB OTG	USB 2.0 x1
Serial ports	RS232 x1
COM baud rate	Up to 921600bps
Electrical
Input voltage	+9 ~ 28V DC
Power consumption	Network or radio receive mode		≈ 5W
	Radio transmit mode (0.5W)		≈ 8W
	Radio transmit mode (1W)		≈ 9W
	Radio transmit mode (2W)		≈ 11W
Lithium battery	7.4V 6400mAh x2
Battery charging temperature:	+10°C ~ +45°C
Battery working time	Up to 7 hours
Physical
Display	1.54'' OLED
Dimension	157*157*103 mm
Weight	≈ 1.2kg (without battery), ≈ 1.4kg (with a battery)
Screw hole for assembly	5/8"x11UNC-2B
Vibration	MIL-STD-810G,FIG.514.6C-1
Environmental
Operating temperature	-40°C to +70°C
Storage temperature	-55°C to +85°C
Relative humidity	100% not condensed
Water & dust proof	IP68
Pole drop onto concrete	2m

The pin definition's view from outside to the serial port is as below.

Figure 3.1 Serial data port of Oscar Trek

Table 3.2 Pin definition of the serial data port

Connector Pin No.	Pin Definition
1	GND
2	GND
3	PWR
4	TXD
5	RXD

The pin definition of the TNC connector is as below:

Table 3.3 Pin definition of the TNC connector

Connector Pin No.	Pin Definition
Inside	Signal
Outside	Ground

The pin definition of the battery contacts is as below:

Table 3.4 Pin definition of the battery contacts

Connector Pin No.	Pin Definition
1	+ Positive
2	Data
3	Clock
4	- Negative

Table 3.5 Default factory configuration for internal radio

Channel	Frequency
00	457.550MHz
01	458.050MHz
02	458.550MHz
03	459.050MHz
04	459.550MHz
05	460.550MHz
06	461.550MHz
07	462.550MHz
08	463.550MHz
09	464.550MHz
Customized frequency	410~470MHz

Table 3.6 Detailed configuration information for internal radio

Protocol	Modulation type	Channel band	Air baud rate	COM baud rate
TrimTalk450	GMSK	12.5 KHz	4800 bps	9600/19200/38400/115200bps
	GMSK	25 KHz	9600 bps	9600/19200/38400/115200bps
TrimMark3	GMSK	50 KHz	19200 bps	9600/19200/38400/115200bps
Transparent	GMSK	12.5 KHz	4800 bps	9600/19200/38400/115200bps
	GMSK	25 KHz	9600 bps	9600/19200/38400/115200bps
Satel	4FSK	12.5 KHz	9600 bps	9600/19200/38400/115200bps
	4FSK	25 KHz	19200 bps	9600/19200/38400/115200bps
South	GMSK	12.5 KHz	4800 bps	9600/19200/38400/115200bps
	GMSK	25 KHz	9600 bps	9600/19200/38400/115200bps
	GMSK	50 KHz	19200 bps	9600/19200/38400/115200bps

TC80 controller

Table 3.7 TC80 technical specification

System
Operating System	Android 12
CPU	Octa-Core 2.0GHz
Memory	6GB RAM + 64GB ROM
External storage	Micro SD, up to 256GB
Display	5.5″ sunlight-readable capacitive touch screen
Resolution	720x1440
Camera	13MP Auto Focus Camera
Flash Light	High light Flash LED
Electrical
Battery	7700mAh 3.8V
Battery Life	10 hours
Charging Time	<4 hours (fast charge)
Communication
Wi-Fi	IEEE 802.11a/b/g/n 2.4G&5G
Cellular Mode	Dual SIM Dual Standby
SIM1 & SIM2	FDD-LTE B1/B3/B5/B7/B8 TDD-LTE B38/B39/B40/B41 WCDMA B1/B2/B5/B8 GSM B2/B3/B5/B8 CDMA/EVDO BC0/BC1
Bluetooth	BT5.0 (BLE)
USB	USB Type-C (supports OTG)
NFC	Protocol of ISO14443A/B, and ISO15693 Readable Distance 0~5cm
GNSS	GPS/GLONASS/BeiDou
Sensors:	G-Sensor, Compass, Light-Sensor, Gyro
Physical
Dimension	221.3mmx77.7mmx19.6mm
Weight	320g (include battery)
Reliability
Operating Temperature	-20°C ~ +60°C
Storage Temperature	-30°C ~ +70°C
Humidity	5% ~ 95%
Dustproof & Waterproof	IP68
Shock	1.5m drop onto concrete

Radio whip antenna

The 410-470MHz radio whip antenna is to be installed on the TNC port to transmit or receive signal for the internal radio. This antenna is elastic whip structure, resistant to bending.

Table 3.8 Radio whip antenna technical specification

Technical Specification
Frequency Range	410~470MHz
Bandwidth	60MHz
Polarization Mode	Vertical
Gain	2dBi
Input Impedance	50Ω
VSWR	≤2.5
Maximum Power	20W
Connector	TNC Male
Antenna Length	168mm
Antenna Weight	About 50g
Extreme Wind Speed	120 Km/h