Tech Support by Vendors - Columbus — p-7pro

There are a few reasons why this might be the case. First of all, there aren't many SBAS satellites in the sky. Additionally, SBAS satellites are geosynchronous orbit satellites, which means they don't move across the sky like other satellites do. If the elevation angle of an SBAS satellite is too low, the P-7 Pro's GNSS chip (Broadcom chip) will determine that it's unhealthy and won't capture its signal. This is why you might not always see any SBAS satellites even when you've enabled them.During my tests of the P-7 Pro in the Toronto, Canada area, I found that I...

To reduce the unnecessary interference by static drift,  P-7 Pro enabled the static drift filter  by default. When the device is stationary, it filters the positions drift which are greater than or equal to 1.5 meters. If you want to disable or re-enable this filter, please follow the below step by step instruction. 1. If you didn't do so, please download the Windows USB driver of P-7 Pro from here. Install the driver.   2. Download GnssToolKit3 software from here , extract it and double click the GnssToolkit.exe.   3. Select the baud rate 57600.   4. Plug in the P-7 Pro to...

1. If you didn't do so, please download the Windows USB driver of P-7 Pro from here. Install the driver.   2. Download GnssToolKit3 software from here , extract it and double click the GnssToolkit.exe.   3. Select the baud rate 57600.   4. Plug in the P-7 Pro to the computer's USB port.   5. Open the "Device Manager" from the Windows. Select Ports (COM & LPT). Note down one of the com ports number which showing "Silicon Labs Dual CP2105 USB to UART Bridge: Enhanced COM Port". I will use "COM10" in this instruction.   6. Connect the...

The accuracy calculated by many apps in the market is based on a single frequency satellite system, whose accuracy values are converted from the HDOP values. The accuracy value of dual-frequency GNSS receivers (P-7 Pro, P-10 Pro) can not simply be converted this way, (The coordinate reading of those apps are accurate though. ) so please do not rely on those accuracy readings. To properly test the accuracy of P-7 Pro, please follow the below "Columbus" official instruction. This instruction apply to P-10 Pro as well. https://cbgps.com/p7/app/gnsstoolkit/cep/index_en.htm

According to the technical specs, the vertical accuracy of Columbus P-7 Pro or P-10 Pro GNSS is 15 meters. I was told by the Columbus engineer, the 15 meters vertical accuracy originates from the GPS chipset technical specs. In the real world tests, the average vertical accuracy is around 5 meters.  Compared to the 50 meters vertical accuracy of most single frequency GPS/GNSS , the P-7 Pro or P-10 Pro still has great advantages.