User's Manual

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3.4 Optional External Vehicle Detector Installation
 If an external type vehicle detector will be used, install it according to its own
installation instructions. Connect it to the base station according to the appropriate
wiring diagram in Figures 26 through 36. Note that the connections are different for
internal and external vehicle detectors.
 For an external vehicle detector in Lane 1, route a cable from the detector’s output
to the J6 connector on the audio board in the EOS|HD base station. For an
external vehicle detector in Lane 2, route a cable from the detector’s output to the
J14 connector on the audio board.
 Remove 4 inches (100 mm) of outer insulation from the end of the cable at the base
station, and strip about ¼ inch (6 mm) of insulation from each of the color coded
wires coming from the cables.
 Connect the color-coded wires to connector J6 and/or J14, pins 3 and 5 for negative
vehicle detection according to the wiring diagrams in
Figures 26 through 36. Be sure
the wires are fully inserted into each connector plug to prevent shorting the wires.
3.5 Optional HME Vehicle Detector Board (VDB)
Installation
To install an HME VDB in the base station, follow the instructions below.
Note: In tandem systems, two VDBs will be installed in the base station, one at the
“VDB LANE 1” position for Order Point #1, and one at the “VDB LANE 2” position for
Order Point #2.
 Open the base station by pushing down on the latches on top of the cabinet and
VERY CAREFULLY guiding the top of the cover toward you and downward.
 Position the three holes in the VDB over the three plastic standoffs at the upper
right side, inside the base station, in the position shown on the respective wiring
diagram in
Figures 26 through 36. Press on the VDB until the tips of the three
standoffs snap through the holes in the board.
If there is a switcher board, connect the cable assembly enclosed with the VDB to
the P1 connector on the vehicle detector board, and the other end to the J6
connector on the respective LANE 1 or LANE 2 switcher board as shown on the
wiring diagrams in Figures 26 through 36.
If there is no switcher board, connect the cable assembly to the P1 connector on
the vehicle detector board, and the other end to the J10 connector (or J20 for Lane 2)
on the audio circuit board as shown in the wiring diagrams in Figures 26 through 36.
 Route a cable from the underground loop(s) to the TB1 terminal block on the Vehicle
Detector Board(s).
 Close the cover on the base station, and lock it by pushing until it latches.