newbie has few questions regarding installation. Here's what I have: -2 complete Spectra III Dome system -Pelco KBD4000 keyboard -Pelco MX4016CD Multiplexer -Pelco MCS4-2 24VAC Indoor power supply -Spool of RG58, BNC connectors and crimper -18 AWG wires Do I need to purchase the Pelco MX4000SVR Multiplexer Server? How does the KBD4000 control camera PTZ when it's connected to multiplexer? Aren't there suppose to be signal cabling for these? How would a Kalatel DVR connect to this setup? by loop?