Pelco Heavy-Duty Spectra Back Box BB5HD User Manual

APPENDIX

Table A. Video Coaxial Cable Wiring Distances

Cable Type*

Maximum Distance

RG59/U
RG6/U
RG11/U

750 ft (229 m)

1,000 ft (305 m)
1,500 ft (457 m)

* Minimum cable requirements:

75 ohms impedance. All-copper center conductor.
95% braided copper shield.

Table B. 24 VAC Wiring Distances

The following are the recommended maximum distances for 24 VAC with a
10-percent voltage drop. (Ten percent is generally the maximum allowable
voltage drop for AC-powered devices.)

Wire Gauge

30 vA

94 ft

(28 m)

150 ft
(45 m

238 ft

(115 m)

380 ft

(72 m)

603 ft

(183 m)

960 ft

(292 m)

75 vA

37 ft

(11 m)

60 ft

(18 m)

95 ft

(29 m)

152 ft

(46 m)

241 ft

(73 m)

384 ft

(117 m)

NOTE: 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.

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)

Table C. Switch Settings for SW1

Control Type

Switch Setting

SW1-1

SW1-2

SW1-3

SW1-4

SW1-5

SW1-6

SW1-7

SW1-8

Coaxitron

OFF

OFF**

P-Type Control

OFF

OFF**

D-Type Control

OFF

OFF*

OFF**

NOTES: Switches SW 1-3 through SW 1-6 MUST be OFF.

D-type control is RS-422 that is compatible with Pelco’s CM6700, MPT9500, CM8500, and Genex

controllers or with

American Dynamics control systems using the AD2083 Translator.
P-type control is RS-422 that is compatible with Pelco’s CM6700/CM9750/CM9760 and Genex control systems.

* OFF- Use with controllers that have more than 32 presets.

ON- Use with American Dynamics controllers (32 presets).

** OFF - Use with all control systems except CM9502 with variable speed keyboards.

For CM9502 with fixed speed keyboards, set switch OFF.

ON - Use with CM9502 with variable speed keyboards for smoother joystick control.

Pelco Installation Manual C2429M (3/01)