Installation manual

Avoid splices. This will save time and prevent problems in general. However,
if you must splice a cable, do not bury the splice! Make sure it will be
accessible after the walls are finished, or re-run the cable.
When making “trunks” of cables (several cables groups going in the same
direction for a long distance), keep wires with like signals together.
Especially be sure that speaker cables, which carry relatively high current,
are kept away from audio and data cables.
Clearly identify your cables. Label them when you pull them. Re-label them
when you trim and terminate them. Keep the labels approximately the same
distance back from the point of termination to make them easier to read.
Daisy Chained Wiring
Daisy chaining is a wiring method in which you connect a cable from one
keypad to the next, with the final termination made to the
KEYPAD input on
the PX-700 rear panel. This method is suitable for retrofitting existing
homes where home runs are difficult and time consuming. In new construc-
tion, risk of wire damage is high, and with the daisy chain method, you
could lose connection to many keypads with one non-terminated point.
Thus, while daisy chaining may be efficient, absolutely use extra care when
routing the wiring, especially in new construction. DO NOT use this wiring
method with ATC keypads.
Home Run Wiring
In this method, each keypad is wired independently back to the KPT Keypad
Termination Board, then to the keypad input on the PX-700 rear panel. This
is by far the safest and most reliable method. If you are connecting more than
six keypads, use an additional termination board. It is possible to terminate
more than one set of wires onto any one of the plug-in screw terminals on the
termination board, however you give up the ability to disconnect individual
keypads for troubleshooting purposes.
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A combination of daisy chain and home run wiring may be used in retrofitting
or new construction. Be sure to heed warnings above.
KPT
The KPT is used to connect multiple, home run ATC touchscreens, KPS key-
pads, PX-603s, MA-361s and VX-241s to the RS-485 bus. Up to six separate
connections may be made to the KPT in addition to a jumper to the PX-700.
The KPT may be mounted in any location between the PX-700, other
Audioaccess equipment, and the keypads. We recommend that it be easily
accessible. The KPT is useful when troubleshooting, since individual lines may
be tested by unplugging all but the one in question. Mis-wiring, incorrect DIP
switch settings, ATC address setting problems, and malfunctioning keypads or
PX-603s can be quickly identified in this manner.
PHYSICAL INSTALLATION
3.3