Manual

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 12 P/N: 01836-004 Revision 5.5
Network Communications
• an RS-232 serial port that automatically configures itself to communicate directly
to a PC or communicate to a PC via modem
• an RS-485 network communication port capable of linking up to 128 controllers
on a single network up to 4,000 feet long (or up to 16,000 feet under specific
conditions – refer to Appendix 3: PXL-250 Network Wiring Application Note)
Automatic Network Configuration
• automatic configuration of earth ground to one point to support network
communications
Access Control Database Capacity
• transaction buffers capable of storing up to 3,640 events per controller
• a database capacity of up to 10,920 unique cardholders per controller, OR
• with optional RAM expansion, up to 65,535 unique cardholders per controller
Support for the Following Reader Technologies
• Keri Systems Proximity
• Wiegand Compatible (26-bit)
– Bar Code
– Biometrics
– Keypad
– Magnetic Stripe
– Other Proximity
NOTE: Wiegand readers must send data according to the Security Industry
Association's Wiegand Reader Interface Standard (document number AC-01D-96).
Keri Systems, Inc. cannot guarantee the performance or reliability of Wiegand readers
that do not meet these guidelines.
The optional LCD-1 Alpha/Numeric Plug-In Display adds the following feature.
• access to built-in system diagnostics to aid in troubleshooting (highly
recommended)