User Manual
Library Security Pedestal 2
26/62 Revision 4.2 July 2008
5 Configuration
All configuration operations of L-SP2 systems are carried on with the L-SP2 Configuration Utility
Software.
5.1 Chip Configuration
5.1.1 Scanning Duration
For optimal performance the scanning duration (Tscan) should not exceed 250ms. Tscan is
the period to scan all the pedestal of a group. Depending on your chip configuration and the
number of pedestal installed you can determine the scanning duration of your installation.
Table 2: Scanning Duration
No Read Memory Read Memory
Synchronization duration
6ms 6ms / pedestal
C220 / C320
25ms / pedestal 80ms / pedestal
C370 / C370-L EAS
35ms / pedestal 100ms / pedestal
C370 / C370-L / Tag-It /
Generic ISO15693 AFI
80ms / pedestal 65ms / pedestal
Example 1: with a 3 pedestals system using the C220 + C370-EAS without Read-Memory
The scanning duration will be: Tscan = 6ms + (25ms+35ms) x 3 = 186ms
Example 2: with a 3 pedestals system using the 370-AFI + Read-Memory.
The scanning duration will be: Tscan = (6ms+65ms) x 3 = 213ms
5.1.2 EAS Mode versus AFI Mode
EAS mode is only supported by the C370 or C370-L (NXP chip). AFI mode is supported by every
ISO15693 chip, whatever the manufacturer (NXP, Texas Instrument, ST …).
In non-Read memory mode, EAS mode is faster than AFI mode, therefore it helps keeping a low
scanning duration in case of a high number of pedestals.
In Read memory mode, AFI mode will give better results. AFI mode will allow specific addressing
of items which are stolen. Therefore the LSP2 will be able to read the memory of multiple stolen
items.
This is not possible in EAS mode; the read memory can not be addressed using the EAS status of
the item. Therefore, the LSP2 will only read the memory of one item. In the case of one stolen item
among multiple checked-out items, the LSP2 would retrieve the memory of one of them, whatever
its EAS status.
5.2 Understanding the L-SP2 Synchronization Process
5.2.1 Standard Synchronization Mode
To manage a group of pedestal, a synchronization burst is sent by the master gate to all the
slaves’ gate. This is called the synchronization process.