User's Manual

17 Specifications
148 Trimble R7/R8 GPS Receiver User Guide
Trimble R8 GPS Receiver Operation
Initialization Automatic while moving or static
Minimum
initialization time
10 sec + 0.5 × baseline length (km)
Communications Two RS-232 serial ports (Port 1, Port 2,)
Port 1: Baud Rates up to 115,200 bps
Port 2: Baud Rates up to 115,200 bps
RTS/CTS flow control negotiation supported on Port 2
only
Bluetooth communications with Trimble ACU or TSCe
with BlueCap module
Transmit radio Transmit power: 0.5 watts
Wireless data rate: 4800, 8000, 9600, 16000, and 19200
Frequency bands: 410-430MHz, 430-450MHz,
450-470MHz
Channel Spacing: 12.5kHz and 25kHz
Number of channels: Total of 20 factory
pre-programmed transmit frequencies or user
configured receive frequencies
RF modulation format: Gaussian Minimum Shift Keying
(GMSK) at 4800, 8000, 9600, 16000, and 19200 bps
Range: Optimal 10 km (line of sight); Typical: 3–5 km
(varies with terrain and operational conditions)
Battery life: Up to 3.5 hours (varies with temperature
and wireless data rate)
GSM module Certification: Class B Part 15, 22, 24
FCC certification: 850/1900
Class 10 GSM module
CE Mark approval
C-tick approval
GSM: type approvals are country specific. For more
information, contact your Trimble representative.
Bluetooth Type approvals are country specific. For more
information, contact your Trimble representative.
Table 17.3 Technical specifications (continued)
Feature Specification