Encompass 4 Reader
TransCore Proprietary
7
Pre-Installation Testing
Bench Test the Reader
Bench test the reader using the following equipment:
• Audible circuit tester (buzzer) or volt meter with continuity tester
• Compatible power/communications cable
• PC using a terminal emulation program such as Tera Term or Microsoft HyperTerminal
The Encompass 4 Reader uses a single 26-pin (13 twisted pair) cable to interface with power, I/O, and
communications signals. The reader cable can be directly connected to external devices or routed to
other components via an external junction box.
Connect Hardware
1. For AC powered units, connect the power wires from the cable to the transformer using the color
coding as described in Table 2. Do not apply power to the transformer at this time.
For DC powered units, connect leads to an appropriate power supply. Do not turn on the power
supply at this time.
Table 2 Power Connections
Colored Wire Pair Use These Colors
Connect to Transformer
Terminal Strip
Brown/Red Orange and Brown L1 (16 to 20V AC)
Orange/Red Red and Red L2 (16 to 20V AC)
2. For Encompass 4 Readers with an antenna port, connect the antenna prior to powering up the reader,
using an N-type connector.
3. Connect the leads from the audible tester to the red and white pair of wires from the
power/communications cable.
4. For RS–232 units, refer to Table 3 for wiring instructions. For RS–422 units, refer to Table 4.
5. Connect the communications cable to the appropriate terminal on the host computer.
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