User's Manual Part 1b

Installation
G
ATEKEEPER SYSTEMS INC.
2007
CART CONTAINMENT MANUAL
Page 30
Calibrating the Central Transmitter
The CentralTransmitter board is an electronic signal generator which transmits a digitally encoded signal through
the perimeter antenna. After the CentralTransmitter has been properly installed, the antenna is connected, and
electrical power has been installed, set up and testing of locking distance is required.
1. Turn the potentiometer to zero.
2. Set the “SW5 POWER” switch to ON.
3. Wait 10-15 seconds for the transmitter to energize, then turn the potentiometer to “2.5”. This should result in
a locking distance of approximately three (3) feet from the perimeter antenna.
4. Go outside and test the locking range of a GS
2
Wheel. It should begin to lock at approximately three (3) feet
from the perimeter antenna.
5. Continue checking different points of the perimeter to insure that all locking points have a consistent locking
range. Confirm that all areas are protected with a locking range of approximately three (3) feet on either side
of the perimeter antenna.
Remember, each time a wheel is unlocked it will be unable to lock again for 10-15 seconds. There is a delay
programmed into the wheel, to allow a wheel to be removed from the influence of the locking zone, after it is
unlocked. If twisted pair has been installed, verify that there are no gaps in protection between the edge of the
twisted pair and the locking loop. In addition, verify that the twisted pair is not emitting a locking signal, which
locks the GS
2
Wheel.
Confirm that the wheel will not lock anywhere inside of the store. Check all entranceways, checkout lanes, and
cart corrals.
Selecting the Transmitter Mode
The D-9110A CentralTransmitter may be configured to send out four different types of signals. The four types are
Digital (GS
2
and GS
1
), Analog, EP2000, and Door Mode.
Inside the transmitter, the mode selector switch location is SW3. To change from one mode to another, first turn
off the transmitter, then switch SW3 to the desired mode before powering on the transmitter again. The switch
values and their corresponding signals are shown below:
SW3 Setting SIGNAL TYPE
00 (Both Off) GS
2
Digital Signal
01 Gatekeeper Analog Signal
10 EP2000 Signal
11 (Both On) Door Mode Signal
The Gatekeeper Digital Signal will work with any digital version of Gatekeeper wheel (GS
1
, GS
1.1
, and GS
2
). The
Gatekeeper Analog Signal will work only with a Gatekeeper Analog wheel. The EP2000 Signal will work with a
GS
2
Wheel, Gatekeeper EP2000 wheel, and Carttronics CAPS caster. The Door Mode Signal is the same signal
as the ExitManager Door Signal, and is used only when the D-9110 CentralTransmitter is used in an
ExitManager configuration.