CP-3800 GC Operator’s Manual
155
Communications
Introduction
The 3800 Gas Chromatograph uses Ethernet® as the method of
communications for instrument control and for sending digitized data to an
external data system. In addition, the 3800 is equipped with analog output
ports which allow analog data to be sent to external integrators or other
analog data systems.
The 3800 is equipped to handle digital and analog data simultaneously. The
Ethernet communications option allows Star Workstation control of the 3800
and transmits up to three channels of detector data to the Workstation. In
addition, the standard 3800 is equipped with an analog connection which can
be configured with up to three analog outputs and status signals. Various
cable options are available for sending analog data to integrators and data
systems.
Ethernet Communications
Ethernet refers to the type of hardware connection used to transfer digital
data between the 3800 GC and the data system to which it is attached. The
optional 3800 GC Communications Board has a 10Base2 Ethernet
connector located on the rear of the GC. This BNC style connector accepts
RG58C/U cable connections. The standard 3800 Communications kit
contains a six foot cable and a BNC Tee. The BNC Tee is connected to the
GC BNC connector. The Ethernet cable connects the BNC Tee on the 3800
GC to the Star Chromatography Workstation Ethernet board or to a cable or
hub on a company network. If only one GC is connected to the Star
Workstation or is the last in a series of GCs connected, then a terminator is
used on the open end of the Tee. Otherwise, another cable can be
connected to the BNC Tee to attach to another GC.
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