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Specifications
Network requirements
The 3M
™
SelfCheck
™
System comes with an integrated network adapter and communicates with the ILS over an Ethernet
network, which requires the following network infrastructure:
• The standard wired Ethernet adapter requires support for 10BASE-T or 100BASE-T protocols and RJ-45 cable termination.
• The optional wireless Ethernet adapter requires support for 802.11 g or 802.11 b protocols and must meet the requirements
listed in the following table:
Security
Network security is the library’s responsibility. Security measures include but are not limited to the following:
• Separation from the library’s public wireless network.
• SSID transmission suppression so that the access point is not readily visible or likely to be used by
library patrons.
• Either WPA or WEP encryption, with encryption key rotation and/or MAC address filtering.
• If financial transactions using credit or debit cards are implemented, the library must conform to Payment
Card Industry (PCI) data security standards (DSS) developed by the PCI Standards Council. Requirements
can be found at http://www.pcisecuritystandards.org/.
Signal Strength
The SelfCheck
™
System must be located within optimal operational range of the wireless access point, as
determined by access point signal strength, which can be analyzed and measured using software installed
with the wireless network adapter.
• Transmitted signal strength from the wireless access point must be greater than –27dBm as measured at
the installed location of the SelfCheck System.
• Software RSSI (received signal strength indicator) must show greater than 90% signal strength (all five
bars of RSSI are green) at the installed location of the SelfCheck System.
Guidelines
The following can help ensure required signal strength at the SelfCheck location:
• Install the SelfCheck
™
System within twenty feet (20 ft. [6 m]) of the wireless access point.
• Install the SelfCheck
™
System in line-of-sight of the wireless access point, with little or no metal between
the two. This will reduce radio-frequency interference or multi-path distortion effects.
© 3M 2011. All rights reserved.
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