HM ELECTRONICS, INC.
14110 Stowe Drive, Poway, CA 92064 USA
•
Phone: 1-800-848-4468 Fax: (858) 552-0172
HME# 400G575
Rev
−
1027/05
VDB102
Vehicle Detector Board
INSTALLATION INSTRUCTIONS
IMPORTANT!
⎯
When handling the VDB102, use proper grounding procedures to
avoid electrical damage to the board.
1. INSTALLATION
•
Disconnect the drive-thru audio or timer system power adapter from its
electrical outlet.
•
If the VDB102 will replace an existing VDB101, do 1, 2 and 3 below. If not, skip
them and go on to the following step.
1.
Disconnect the loop cable from TB1 on the VDB101.
2.
Disconnect the VDB101 interconnect cable from its connector on the base
station or control unit circuit board. Note the connector and its location.
3.
Remove the VDB101 by lifting it off the plastic standoffs that hold it in place.
•
Position the VDB102 over the three plastic standoffs on the base station or
control unit circuit board and press it firmly until the standoffs snap through
the holes on the VDB102. See Figure 1.
•
Connect the loop cable to TB1 at the lower right corner of the VDB102. See
Figure 1.
•
Connect the VDB102 interconnect cable to P1, at the upper left corner of the
VDB102. 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, below. Connect the other end
of the interconnect cable to the circuit board in the base station or control unit
according to installation instructions from the drive-thru audio or timer system.
If the installation instructions are not available, call HME at 1-800-848-4468.
•
Reconnect the drive-thru or timer system power adapter to its electrical outlet.
•
Be certain the LED on the VDB102 is lit when a vehicle is on the loop. If it is not, be
certain all connections are tight. If it is still not lit, call HME at 1-800-848-4468.
If it is necessary to change the functions of the VDB102, refer to the DIP switch
settings on the back of this sheet. Normally, no changes will be required.
Figure 1. VDB102 Vehicle Detector Board
P1 Pins:
1 (shield) – GND
2 (red) - +12VDC
3 (black) – Output/Sig
NOTE:
Adjust switches as needed
before installing the
VDB102. See back page
for switch settings.
Plastic
standoffs
LED
Loop
connector
Plastic
standoff
