Trimble R7/R8 GPS Receiver User Guide 111
Overview 12
Trimble R8 Operation
• Single Lithium-ion rechargeable battery
• Cable-free Bluetooth communications with the Trimble
Attachable Control Unit (ACU), or TSCe™ with Bluecap
module
• Two RS-232 serial ports for:
–NMEA output
– RTCM SC-104 input and output
– Trimble Format (CMR & CMR Plus) input and output
• One TNC radio antenna connector
• 6 MB internal memory for data storage
• Internal 450 MHz radio with a transmit option or GSM module