User's Manual Part 2

Troubleshooting

ATEKEEPER SYSTEMS INC.

2007

CART CONTAINMENT MANUAL

Page 74

3. Make sure the test wheels work by cycling them with a CartKey. The coupling signal is usually weak and

hard to detect. Locking the wheel usually takes place when the shopper stops to load their cart or to inspect

the merchandise. Sweep the areas with the test equipment and pay close attention to floor drains, electrical

circuits, and building support beams. Note any areas of concern.

4. Check the CentralTransmitter. If this is a digital system the coupling can be duplicated without interfering

with store operations by sending an unlock signal through the system.

• Power down the CentralTransmitter.

• Place a jumper between the two poles on the unlock switch located on the door panel.

• Turn the output level up until the unlock signal is present in your areas of concern. If you are using a

wheel as your indicator, lock the wheel before sweeping the area and note the location where it begins

to unlock. Remember that there is a delay before you can relock the wheel.

• Once you see this signal, follow its source to see if the antenna cable is coupling with something that

can be changed. This may require splicing in a test cable around the affected side of the building. If you

can move the test cable to eliminate the unlock signal, this should also eliminate the coupling. This may

take several attempts. Once the signal is eliminated then retune the CentralTransmitter to its previous

state.

5. With the CentralTransmitter still transmitting the unlock signal, check the perimeter and adjust the output

level to receive the signal at the desired level. The recommended level is three feet from the perimeter

antenna. This provides you with approximately a six foot field.

6. With the CentralTransmitter still transmitting the unlock signal, re-sweep the areas of concern. Widen the

sweep and move slowly. Be confident that the signal is not present.

7. Power down the Central Transmitter and remove your jumper.

8. Power up the Central Transmitter and return to the areas where the coupling was taking place.

9. Re-sweep the area to insure that your test wheel and the store’s cart are no longer locking. Use your

SmartKey to be sure that you do not see a stray signal in any of these locations.