Here is a pdf guide on how to connect a Trimble GNSS receiver with a Leica DSX GPR by Bluetooth PDF - Trimble GNSS receiver connecting to Leica DSX GPR
Here is PDF guide on how to connection a Trimble GNSS receiver with a Leica DS20000 GPR unit by bluetooth PDF - How to connect a Trimble GNSS Receiver to Leica DS200
Here is a guide to connect a Trimble R Series GNSS & controller to a Leica DS200 GPR running uNext PDF- Trimble R Series GNSS - Leica DS200 running uNext