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4 Pelco Manual C527M (11/97)
3.0 INSTALLATION
Communication to the CM6700 keyboards is RS-485. Wall jack, modular data cable,
and 12 VAC transformer (all supplied) combine to provide a local, single cable plug-
in connection to the keyboard. A double-sided sticky pad, to secure the wall jack to
a suitable surface, is also supplied.
All cabling between wall jacks is user supplied.
Maximum cable distance for RS-485 communication over 24-gauge wire is 4000
feet. For user supplied cable, Pelco recommends using shielded twisted pairs such
as Belden 9843, or similar cable that meets or exceeds the basic requirements for
EIA RS-485 applications.
NOTE:
Refer to the CM6700
Installation/Operation Manual
(C523M-A) for detailed operating
instructions.