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Pelco Manual C538M-A (3/04) 17
4.0 INSTALLATION
Physical installation of the REL unit is relatively simple, although various configura-
tions are possible.
4.1 DIRECT RACK-MOUNT HOOK-UP
The REL unit mounts in a standard 19-inch rack and occupies only one RU (1.75"
or 4.45 cm) of rack space (refer to Figure 13).
4.2 REMOTE OPERATION
The relay unit may be mounted to something other than a standard 19-inch rack by
relocating the rack ears to another position. If it is desired to place the REL unit
some distance from the controller (CM9760-CC1), the RS-422 communications
from the relay unit to the controller should not exceed 4,000 feet (1,219 m).
Figure 13. Unit Dimensions and Rack-Mount Installation