Attendant Console Example
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Task List: Attendant Console Procedures
Attendant Console Cabling Distances, Local and Phantom Power
A console's maximum distance from the system is limited. The maximum distance for a 302C1 console is as shown in Attendant Console Cabling Distances.
The nonessential functions of an attendant console and its optional 26A1 or 24A1 selector console derive their power from an auxiliary power source. Of the maximum of 27 attendant consoles, 3 of the consoles can derive auxiliary power from the system and through the auxiliary cable located in the trunk/auxiliary field. Provide auxiliary power for a primary attendant console through this cable so the console remains fully operational during short power outages.
An attendant console can also derive auxiliary power from:
- Individual 1151A1 or 1151A2 power supply
- 258A-type adapters
- Bulk power supplies such as the 1145B
A console's maximum distance from its auxiliary power source is:
- 800 feet (244 m) for a 302A1
- 350 feet (106.8 m) for a 301B1 and 302C1
Hard-Wire Bridging
Analog type hard-wire bridging is not allowed for four-wire (only) DCP endpoints. Hard-wire bridging provides no way of combining the digital output of two bridged DCP sets. Also, a bridged endpoint causes degradation of the DCP signal.
Dual Wiring of Two-Wire and Four-Wire Endpoints
Do not simultaneously wire a two-wire and four-wire endpoint to the same equipment location in an MDF. The DEFINITY System uses separate circuit packs to interface two- and four-wire endpoints.
