User's Guide

29Chapter 2 PRS System Installation – IR Receiver
1 Plug one end of the Stereo Cable into the OUT jack of the IR
Receiver.
2 Plug the other end of the Stereo Cable into the connector on the 3-
Way Cable.
3 Plug the Power Supply connector into the receptor on the 3-Way
Cable.
4 Plug the serial end of the 3-Way Cable into an RS232 serial COM
port on the computer, or into a serial-to-USB adapter, if your
IR Receiver
Setup and
Operation
The IR Receiver must be positioned at the front of the room where it can
capture the line-of-sight signals from the IR Clickers. A glass window on the
front of the IR Receiver unit above the red LED Light contains an IR Sensor
reception cone, which has a Reception Angle of approximately 90 degrees.
The size and seating arrangement of the room will predict where at the front
of the room the IR Receiver should be located. Be sure to test transmission
reception from everywhere in the room. One IR Receiver can receive and
process data from up to 50 Clickers. Larger rooms with more seating may
require more than one IR Receiver. Multiple Receivers are daisy-chained
together. Receivers in the corners of the room should point diagonally to the
opposite corner at the rear of the room to take advantage of the entire
Reception Angle of the IR Sensor. The primary IR Receiver ships with one
stereo cable (6 meters), a 3-way RS232 Serial cable and a Power Supply. Each
additional IR Receiver ships with a 12 meter stereo cable used to attach it to
the next Receiver in sequence. One Power Supply can serve up to four IR
Receivers.
Hardware
Connections for
One IR Receiver
(RS232 COM Port)
Computer
3-Way Cable
Stereo Cable
Power Supply
IR Receiver
IR Sensor
LED Light