Encompass 4 Reader System Guide
4-6
Caution
During shipping and installation, an external
antenna can build up a very high volt-
age charge. The voltage needs to be discharged be
fore connecting the antenna to
the reader.
To test the Encompass 4 Reader that uses an e
xternal antenna, connect the antenna and
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.
Discharging Voltage from the External Antenna
Use these instructions to discharge high voltage from the external antenna before pro-
ceeding with further pre-installation testing of
the reader connected to an external
antenna.
Required Equipment
This procedure requires the following equipment.
• TransCore Encompass 4 Reader (external antenna models only)
• External antenna
• RF cable
• N-type load (e.g., 50 ) or RF attenuator (e.g., 20 dB)
Discharging the Voltage
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