User's Manual

Table Of Contents
Orion Reader System Guide
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tion by connecting a pair of wires to the Sync pins on DB15 connector of each reader
as shown in Figure 3-3.
Figure 3-3 Sync Configuration Example
Star Systems recommends Belden 89182 (150 impedance), which is a single
twisted-pair shielded cable rated for outdoor use, or 8132 (120
impedance), which
is a double twisted-pair shielded cable that must be installed in conduit. The Belden
8132 cable has an extra pair that is not used. Using these low-loss, low-capacitance
twisted-pair cable, a distance of 1000 feet (305 m) has been obtained. Cables with
lower capacitance can be used to run the Sync cables for longer distances while main-
taining signal integrity. This maximum distance may be slightly longer or shorter
depending on the cable used.
Because the Sync signals are based on RS
485 signals, you can extend the length of
the Sync bus by using RS
485 repeaters or by using fiber with converters. The stan-
dard Sync interconnect is provided via pins 3 and 4 of the DB15 connector (Table 3-
1).
External Digital Input/Output Connector
The External Digital Input/Output Assembly is used to interface the Orion Reader
with external inputs and outputs. Inputs can be devices such as light curtains or loops,
and outputs can be devices such as gates or lights. (Connector is P/N 33357-01). This
option is described in detail in Appendix D, “Orion Reader Options.” The I/O Board is
pre-installed in the Orion Reader but I/O modules must be purchased separately.
Connecting to Antenna
Connect the Orion Reader to a toll antenna using the single low-loss coaxial cable.
Figure 3-4 shows the antenna connectors on the Orion Reader enclosure. For a single-