User's Manual

2
INSTALLATION
If you’re replacing an existing board, begin at Step 1. If no previous ADVB board exists, begin at Step 6.
1. When handling the AVDB, wear an anti-static wrist strap to avoid electrical damage to the board.
2. Disconnect the drive-thru audio or timer system power adapter from its electrical outlet.
3. Disconnect the loop cable from TB1 on the existing board to be replaced.
4. Disconnect interconnect cable from its connector (P1) on the base station or control unit circuit board. Note the connector and
its location.
5. Remove the existing board by lifting it off the plastic standoffs that hold it in place.
6. Connect the loop cable to TB1 at the upper left corner of the AVDB. See Figure 1, above.
7. Position the AVDB over the three plastic standoffs on the base station or control unit circuit board and press it rmly until the
standoffs snap through the holes on the AVDB. See Figure 1 for hole locations.
8. Connect the AVDB interconnect cable to P1, at the lower right corner of the AVDB. See Figure 1. Be certain the plastic
catches on the cable connector are aligned with the plastic catches on the P1 connector. The color-coded connector wires
must also match the pin positions shown on Figure 1.
9. Connect the other end of the interconnect cable to the circuit board in the base station or control unit per installation
instructions from the drive-thru audio or timer system.
h If the installation instructions are not available, visit hme.com to obtain the manual PDF le or call HME at 1-800-848-4468.
10. Reconnect the drive-thru or timer system power adapter to its electrical outlet.
11. During boot up, “b” (for ‘booting’) will display for a few seconds. The Display on the AVDB should then read “0”, indicating that
the loop is signaling properly. If the Display does not read “0”, be certain all connections are tight. If it still does not indicate
“0”, see Figure 3, page 6.
12. Drive a car onto the loop. The Dot on the Display should illuminate when a car is present over the loop.
P1 Pins:
3 (black) - Output/Sig
2 (red) - +12VDC
1 (shield) - GND
Holes for plastic
standoffs
Loop connector (TB1)
Display (reading “
0”)
Display Dot
Figure 1. Advanced Vehicle Detector Board (AVDB)
NOTE: Adjust switches as needed before installing the AVDB. If it is
necessary to change the functions of the AVDB, refer to the DIP switch
settings on the next page. Normally, no changes will be required.
1 2 3
Holes for plastic
standoffs
DRAFT