1. Restore Default Settings
After installing the UPrecise software, connect the device via serial port. Please ensure the New Line option is enabled in the serial settings.
freset // Clear saved receiver settings, satellite ephemeris, position data, etc. Baud rate resets to 115200 bps
CONFIG COMX 115200 // Configure baud rate for COMX (X is the serial port number shown on your PC, CH341 driver required)
UNMASK GPS // Enable GPS
UNMASK BDS // Enable BeiDou
UNMASK GLO // Enable GLONASS
UNMASK GAL // Enable Galileo
UNMASK QZSS // Enable QZSS
GPRMC COM1 1 // Output GNGGA data at 1Hz
GPGSV COM1 1 // Output multi-system $GSV data at 1Hz
SAVECONFIG // Save configuration to receiver2. Firmware Upgrade
In the UPrecise left navigation panel, click Receiver Upgrade to enter the firmware upgrade interface. Load the firmware file UM982_R4.10Build23575, then click Soft reset and Start sequentially. The upgrade process will proceed automatically.
3. Common Commands
| Command | Description | Parameters / Notes |
|---|---|---|
freset |
Factory reset Clear all saved settings, ephemeris, and position data. Baud rate resets to 115200 bps |
No parameters |
version |
Query firmware version Display the current receiver firmware version |
No parameters |
config |
Query serial port status Display current baud rate and settings for all serial ports (COM1/2/3) |
No parameters |
mask [system] |
Disable satellite system Disable the specified GNSS system |
[system]: BDS, GPS, GLO, GALExample: mask BDS
|
unmask [system] |
Enable satellite system Enable the specified GNSS system (receiver tracks all systems by default) |
[system]: BDS, GPS, GLO, GALExample: unmask BDS
|
config com[X] [baud] |
Set serial port baud rate Configure the communication rate for a specified serial port |
[X]: Port number (1/2/3)[baud] supports: 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600Example: config com1 115200
|
unlog |
Stop data output Immediately stop all NMEA data output on the current serial port |
No parameters |
saveconfig |
Save configuration Write all current settings to non-volatile memory (persists after power cycle) |
No parameters |
mode base |
Set to base station mode Switch receiver to base station operation mode |
No parameters |
mode rover |
Set to rover mode Switch receiver to rover operation mode (factory default mode) |
No parameters |
gpgga com[X] [rate] |
Output GGA data Output GGA messages on the specified serial port at the set rate |
[X]: Port number[rate]: e.g., 1 for 1HzExample: gpgga com1 1
|