ashtech Z-Xtreme, Системное руководство

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25
Connectivity
GPS Receiver - Radio
Raw data collected by the GPS receiver must be transmitted by the radio to any rover
systems that wish to listen. To accomplish this, the GPS receiver must supply the
radio with the raw data. This requires that the GPS receiver and the radio be con-
nected. This connection is made through an RS232 cable, Figure 3.5.
On the back panel of the Z-Xtreme are three serial ports into which the radio cable
can be connected. These 3 ports are grouped together and labeled ‘SERIAL
PORTS’. Although any one of the 3 ports will accept the connection to the radio, it is
recommended that the radio be connected to the port labeled ‘B’.
The radio communication/power cable connection to the radio will be via either a 7-
pin Fischer connector, or a 5-pin Lemo connector, depending on which radio is being
used. The Pacific Crest UHF/VHF uses a Lemo connector with the connection being
made on the rear panel of the radio. This serves as a power connector and an RS232
connector. The cable is Y-shaped allowing connection between the radio
↔ receiver
and the radio ↔ power source. The Ashtech SSRadio uses a 7-pin Fischer connector
on the front panel of the radio and labeled SERIAL PORTS as shown in Figure 3.6.
Figure 3.5 Pacific Crest Base Radio Power/Communication Cable