Trimble Inc. TC900C Benutzerhandbuch
2 Getting Started
6 SNR900 Operation Manual
2.1
Introduction
The SNR900 radio-modem broadcasts raw GPS data in Compact
Measurement Record (CMR) format from a reference receiver to one
or more roving receivers for precise machine positioning.
Measurement Record (CMR) format from a reference receiver to one
or more roving receivers for precise machine positioning.
The SNR900 is compatible with the Trimble SiteNet™ 900 and
TRIMCOMM™ 900 radio for broadcasting and receiving Radio
Technical Commission for Maritime Services (RTCM) or CMR data.
TRIMCOMM™ 900 radio for broadcasting and receiving Radio
Technical Commission for Maritime Services (RTCM) or CMR data.
Trimble recommends that you use the Trimble CMR+™ format
whenever possible. This requires version 1.40 or later software in all
of your radios.
whenever possible. This requires version 1.40 or later software in all
of your radios.
2.2
Hardware Specification
The SNR900 meets stringent hardware requirements and is designed
to survive in harsh environments. It has the following features:
to survive in harsh environments. It has the following features:
•
Integrated low-profile antenna for machine installations.
•
Physical connection by means of the same 8-pin male Bendix
connector previously used on SiteNet 900 and TRIMCOMM
radios. For a description of the connector pinout, see Pinout
Information, page 36.
connector previously used on SiteNet 900 and TRIMCOMM
radios. For a description of the connector pinout, see Pinout
Information, page 36.
In addition, SNR900 is designed for use with unconditioned 10 VDC
to 32 VDC power.
to 32 VDC power.
SNR900.book Page 6 Friday, December 3, 2004 2:02 PM