Keri Systems PXL-510 - Manual (Page 5)

PXL-500 / PXL-510 Tiger Controller
Quick Start Guide
Page 5 of 24 P/N: 01918-001 Rev. B
DO NOT
•
make modem phone line connections through PBX telephone switching systems - most modems are not compatible
with PBX systems leading to disconnection problems with the modem
• locate the PXL-500/PXL-510 controller near EMI sources - EMI sources can affect the performance of the controller
• use switching power supplies - they are EMI sources
• route network and reader cables beside power cables - transients on the power cables may be picked-up by network
and reader cables
• stretch or over-tension cables
• route over sharp objects
• let the wires get tangled
• mix PXL-500s/PXL-510s with PXL-100s in the same network
• use a PXL-250 as the master on a network with PXL-500s/PXL-510s. The PXL-500/PXL-510 should always be the
master controller.
• route controllers in a network in a loop configuration
• connect earth ground
1
to the network cable shield - the PXL-500/PXL-510 automatically connects earth ground to the
shield at one point on the network to prevent ground loops
• use gender changer plugs when making RS-232 serial communication connections (unless you know it is a “straight-
through” plug) - gender changers may have internal wiring changes that can disrupt communications