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Teledyne API - T100 UV Fluorescence SO2 Analyzer Getting Started
55
RS-232 MULTIDROP (OPTION 62) CONNECTION
When the RS-232 Multidrop option is installed, the instrument designated as last in the
chain must be terminated. This requires installing a shunt between two pins on the
multidrop printed circuit assembly (PCA) inside the instrument. Step-by-step
instructions for installation follow.
Note Because the RS-232 Multidrop option uses both the RS232 and COM2
DB9 connectors on the analyzer’s rear panel to connect the chain of
instruments, COM2 port is no longer available for separate RS-232 or
RS-485 operation.
ATTENTION
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Printed Circuit Assemblies (PCAs) are sensitive to electro-static
discharges too small to be felt by the human nervous system. Failure to
use ESD protection when working with electronic assemblies will void
the instrument warranty. Refer to Section 13 for more information on
preventing ESD damage.
To install shunt in the last analyzer:
1. With NO power to the instrument, remove its top cover and lay the rear panel open
for access to the multidrop PCA, which is seated on the CPU.
2. On the multidrop PCA’s JP2 connector, use the shunt provided to jumper Pins
21 22 as indicated in (Figure 3-14).
06807C DCN6650