Users Manual
CUBIC Doc. No. 4400-46002 Rev A  RR5207 Tri-Reader 4 (TR4) User Manual 
© 2020 Transport for London. All rights reserved. This information is confidential. 
  Cubic Unrestricted  Page 7 of 9 
2.4  TR4 Printed Circuit Board Size 
The module consists of 3 boards: 
1.  An Antenna Board, a circular board with a diameter of 83mm, containing the antenna coil (78mm 
diameter) and the NFC Controller Frontend IC 
2.  A Secure Board, a circular board with cut-outs and a diameter of 78mm containing the regulated 
power supplies and the security microprocessor that shall protect the module from tampering to PCI 
PTS POI 5.1 level of compliance. 
3.  A non-secure Expansion Board, with a diameter of 82mm, containing the serial communication 
circuits, power input connectors and the regulated power supplies. 
The thickness of the TR4 module is 16 mm, except for the RJ45 connector which extends 13 mm above the 
components on the back of the non-secure Expansion Board, giving a maximum thickness of 29 mm. 
2.5  TR4 Physical Interfaces 
The following physical interfaces apply to the TR4: 
1.  The TR4 is powered from 8 to 30V
DC
. It can require a maximum of 9.5W at start-up (or during 
intensive processing operations) and can consume 4.5W during normal operation, reducing to 2.2W 
if the product is idle. This power can be supplied through the 120-pin connector on the back of the 
non-secure Expansion Board.  
2.  Communication Interface – Ethernet 10/100 Base-T – Automatic negotiation 
2.6  TR4 Security - PCI PTS POI 5.1 
The TR4 has been assessed and found to be complaint to the Payment Card Industry, PIN Transaction 
Security, Point of Interaction v5.1 security standard; Approval number: 4-60223. 
The TR4 contains a Secure Board, this will automatically and irrecoverably erase the encryption keys stored 
in the device upon the detection of attempted intrusion, tampering or disassembly. This shall render the TR4 
inoperable and the module shall need to be sent back to Cubic’s PCI approved facility for evaluation and re-
commissioning of the module. 









