TransCore encompass 4 - Page 126

Encompass 4 Reader System Guide
4-40
• You have correctly connected communications as described in “Connecting
Communications” on page 4-29.
• You have correctly connected sense input and sense output circuits as
described in “Connecting Sense Input and Sense Output Circuits” on page 4-
34.
2. Connect the red and white leads from the audible tester to the red and white pair
of wires from the Encompass 4 Reader power/communications cable.
3. Start the terminal emulation application Microsoft HyperTerminal by selecting
Programs>Accessories>Communications>HyperTerminal and press
ENTER.
4. In the HyperTerminal dialog boxes choose the com port to which the
communications interface is attached and set the properties as:
• Bits per second: 9600 baud
• Data bits: 8
• Parity: none
• Stop bits: 1
• Flow control: none
5. Cycle the power on the Encompass 4 Reader and ensure that the sign-on message
displays.
6. Input the following commands in the order provided in Table 4-5. Commands
include those to switch to command mode, set operational mode, turn on RF, and
return the reader to data mode.
7. Secure the ATA or IAG test tag to the end of the yardstick using electrical tape or
hook-and-loop material or affix the test eGo Plus or eGo WST to the glass. Be
sure the tag polarization (horizontal or vertical alignment) matches that of the
Encompass 4 Reader or antenna used. If using an eGo Plus-type test tag or eGo
WST, the glass should be in front of the tag (between the tag and the reader or
antenna).
8. Stand directly in front of and about 5 feet (1.5 m) away (see Figure 4-25) from
the Encompass 4 Reader or antenna. Hold the stick or the piece of glass so that
the tag is positioned at a height and angle consistent with a tag installed on a
vehicle. The test tag should cause the audible tester to sound.
Note: If you hold the test tag in your hand, your hand absorbs the RF signal and
the test results are not accurate.
9. Mark the spot with chalk or tape.
10. Move to the left until the sound stops and mark the ground with chalk or tape at
the location of the tag when the sound stopped.
11. Return to the center and then move to the right until the sound stops and mark the
ground with chalk or tape at the location of the tag when the sound stopped.
12. Return to the center and step backward 2 feet (0.6m) and repeat steps 5 through 7.