DEFINITY ECS Release 6
System Description Pocket Reference
555-230-211
Issue 2
January 1998
Page 27
Environmental Specifications
Backboard Mounting Hardware Requirements
This refers to the types of wall construction to which the backboard
will be attached.
Hardware has a combined pullout force of 650 lb. (294.8 kg). When
mounting to sheet-metal walls, attach to structural members.
Location
Within 5 ft. (1.5 m) of dedicated AC power outlet (1 plug per carrier)
Within 1000 cable ft. (304.8 m) of telephones
Heat Dissipation
Fully loaded basic carrier
500 Btu/hr
(35 cal/sec)
Fully loaded 2-carrier system
1000 Btu/hr (70 cal/sec)
(basic carrier with one expansion carrier)
Fully loaded 3-carrier system
1500 Btu/hr (105 cal/sec)
(basic carrier plus two expansion carriers)
Power Requirements
Basic carrier
117 VAC
60 Hz -15% to 10% 5.4A
2-carrier
117 VAC
60 Hz -15% to 10% 10.8A
3-carrier
117 VAC
60 Hz -15% to 10% 16.2A
Temperature/Humidity Range
40°–104°F (4°–40°C)
20%-80% relative humidity
Ventilation Clearances
1 in. (2.5 cm) on right and left sides
Radio Frequency Interference, Tolerance
1.0 V/m
Electromagnetic Interference (EMI)
To reduce electromagnetic interference emissions (possible
interference problems with handheld telephones), check the date of
manufacture of the CPU (517A27) units. If they were manufactured
before April 1993, replace them with a later version.
Type of material
Mounting Hardware
Wood surface
Wood screws
Concrete surface, brick, cinder block
Masonry anchors
Plaster, plasterboard
Toggle bolts
Sheet-metal surface
Sheet-metal screws