Installing the Encompass 4 Reader
4-5
• Suitable 18V AC or 18V DC power wiring for the Encompass 4 Reader
• Audible circuit tester and 9V DC battery for circuit tester power
• Wire stripper
• One Encompass 4 Reader-compatible antenna (if required)
• Suitable RF interface coaxial cable (if using antenna)
Pre-installation Testing of the Encompass 4 Reader
Before installing the Encompass 4 Reader permanently at the site, you should use an
audible circuit tester to confirm that the Encompass 4 Reader has power and can read
a tag presented in the tag read zone.
You also need to ensure that the Encompass
4 Reader-compatible antenna has had any
voltage properly discharged prior to connecting it to the reader.
Testing the Encompass 4 Reader Using an Audi-
ble Circuit Tester
An audible circuit tester is also called a buzz box. These boxes are available at some
electronic parts supply stores, or you can make a buzz box, as shown in Figure 4-1.
The buzz box is powered
by a 9V DC battery and is equipped with two alligator-clip
leads. When you touch the leads together, the box makes an audible sound.
Figure 4-1 Wiring for Audible Circuit Tester
To test the Encompass 4 Reader that uses an integrated antenna, connect the power
supply as described in the appropriate section below, and then test as described in the
section “Bench Testing the Encompass 4 Reader Before Installation” on page 4-13.
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