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5 SETTING UP
For all aspects other than serial data transmission the
transmitter is set up as shown in the relevant Instruction
Manual. Unless otherwise requested, the instrument is
despatched
with a transmission rate of 9600 baud and
transmission line termination resistors linked-out. If the
resistors are to be linked-in (see Fig. 5.1) carry out the
following Section.
5.1 Termination Resistors – Fig. 5.1
For long transmission lines, termination resistors are required
on the last 8240 Monitor in the chain and at the host computer/
computer terminal. Under normal operating conditions the
resistors are required at the last 8240 receive inputs only – see
Fig. 4.1. The transmitter's resistors are selected using plug-in
links – see Fig. 5.1.
Switch off the supply and gain access to the output board
relevant Instruction Manual
.
as shown in Fig. 5.1.
–
Set the termination resistor links
Output Board
IC32
IC34
see
Termination
Resistors
Fig. 5.1 Termination Resistor Links
IC31
IC33
Termination
Resistors
IN
OUT
5
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