Deltronic Labs Ticket Eater D2000, Manual

Page: 13 / 50

TT-2000 Ticket Eater
™
by Deltronic Labs June 2015
13
Managing Anti-cheat Features
The Ticket Eater has several methods to detect attempted cheating. Various options
control these methods.
Cheating
There are two common ways that cheating is attempted. Some cheaters will rip the
tickets in half the long way, and insert each half separately. The dual rear sensors protect
against this by checking that both the left and right side of the ticket are present. The
more common cheating method is holding on to the tickets and pulling them back out.
Mechanical Maintenance
The first line of defense against pull-back cheating is good mechanical maintenance. A
well-maintained machine will tend to grip and rip the tickets when pull-back is attempted.
Pay attention to the condition of the O rings on the bottom rollers. Worn O rings should
be replaced.
Check the condition of the flat metal roller springs that provide pressure on the top
rollers. The big problem is bent springs. This happens when the guide assembly is not
installed correctly. If the top roller shafts are not in the slots in the side plates before
pushing down hard to lock in the assembly, it can bend the springs. As a temporary fix
you can take the springs off and restore them to their original shape. Refer to the first
page in the Mechanical Drawings section of this manual for guidance on the correct
shape. If this occurs frequently the springs are weakened and should be replaced.
Check the side plates for wear. Worn side plates will not hold the top rollers in the
correct position. Then the rollers don’t provide enough pressure to fully grip the tickets
Roller misalignment can also cause jams by warping the tickets as they go through the
rollers.
Rear Sensors
The sensors at the rear end of the sensor board are used to detect cheating. They check
that both sides of the ticket are present. Option 32 in group 99 3 controls whether they
are used. Rev. 5 sensor boards have an extra middle sensor that helps them detect the
direction a ticket is moving. They combine this cheat detection with the rear sensor cheat
detection, so option 32 controls both for a rev. 5 board.
Full-bucket Sensor
On Ticket Eaters with a full-bucket sensor, the sensor is briefly triggered by the cut-up
tickets falling into the trash. These sensor flicks are used to detect cheating. No flicks =
no tickets = cheating. But, occasionally a ticket will fall in a way that the sensor misses
it, so there must be some tolerance for missed flicks. Option 25 in group 99 2 controls
whether the full-bucket sensor is used for cheat detection. Option 27 in group 99 2
controls the missed-flick tolerance.
Barcoded Tickets
Using barcoded tickets provides more security. If the barcode does not move past the
sensor at a uniform speed, it will not read correctly. Sometimes a poorly printed barcode