42 of 220 Network Installation - Anatel A643a
RPS - June 2007 - Edition 12
Operator Manual Anatel
It is recommended that once the Network communications have been established with all
instruments, the System Time be again set as described in “System Time” on page 22. The
date and time are then broadcast to the connected Sensors, thereby assuring that all of the
instruments on the Network are synchronized to the same clock setting.
A-Net Networks longer than 500 feet require active termination. In these installations, an
AC-powered terminator (P/N FG2006501: 120 VAC, 60 Hz; FG2006601: 230 VAC, 50 Hz)
must be connected to the open coupling at each end of the Network and then plugged into an
appropriate AC supply to ensure a clean signal. More Sensors may be added to an existing
A-Net configuration by positioning them along the trunk line and then attaching them as
described above using the twin-axial cable and the tee connector provided.
Table 3-1 : Potential A-Net Configurations
C80 Controller A643a-S Analyzers A643a-P Analyzers
880
008
117
126
:::
:::
• Maximum of eight C80 Controllers
• Maximum of eight A643a Sensors
Fig 3-5 : A-Net Communications Connections
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