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10 Pelco Manual C1487M-D (7/99)
WIRING
Bring wiring to the back box opening in the ceiling. Do not attach the wiring to the back box.
You will do that later.
Refer to Figure 8 for the Spectra II™ wiring diagram or Figure 9 for the Spectra Lite™
wiring diagram.
Wiring is required for power, earth ground, and video.
Refer to Table A for the type of video coaxial cable to use.
Input power for the dome is 24 VAC only. Power consumption is 30 vA per dome for indoor
models and 75 vA for outdoor models. Refer to Table B to determine the size of wire to use.
Use a 24 VAC transformer with the following minimum vA:
40 vA per dome For indoor models (without heater)
100 vA per dome For outdoor models (with heater)
Refer to Figure 11 for wiring multiple domes from the same transformer.
Figure 8. Wiring Diagram for Spectra II™
CONTROL
(RS-422)
7
+5 to +24 VDC
EXTERNAL RELAY
(WIRING EXAMPLE)
SPECTRA II™ INTERCONNECT BOARD
NOTE:
The dome will stop
operating if the voltage at
the dome drops below 18
VAC. It will turn back on
when the voltage exceeds
18 VAC.