Use a Leica serial-to-USB cable to connect the instrument's data port to your computer.
Many surveyors operate on the principle: "If it ain't broke, don't fix it." However, there are critical reasons to pursue the latest software for your TCR 307:
The TCR 307 uses a 9-pin serial port. A standard USB-to-serial adapter needs the correct driver. Download the PL2303 Windows 11 Legacy Driver v3.8.0 from the chipset manufacturer's site, not Microsoft's auto-update.
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Use a compatible Leica data cable to connect the data port on the instrument's base to your computer's COM or USB port. Configure Instrument Settings: Set Data Output to RS-232 .
Because the TCR 307 is a legacy model, users generally require "Survey Office" or simplified versions of "Geo Office" for data exchange.