Scientific Atlanta Power Supply Unit manual Electrical Specifications

Specifications, Continued

Electrical Specifications

Item	Specification
Input voltage range	100 - 120 / 200 - 240 V AC
Output	Two non-isolated outputs 12 V DC
	Output voltage: 12.25 ± 0.25 V (± 2%)
	No adjustments necessary.
Maximum Spec. SMPS (with forced air-	6.25 A on each output (150 W output
cooling)	power)
Maximum Load in application	5.2 A (120 W output power)
Nominal load in application	4.2 A (96 W output power)
Minimal load	0.25 A (to start up the SMPS)
Output current limit for each 12 V	6.7 A (short circuit proof)
output
No derating over entire temperature	Nominal load from 0°C (32°F) up to
range	45°C (113°F)
Efficiency	83%
Switching frequency	± 66 kHz (Forward converter)
No load input power	Max. 5 W
Inrush current limitation with NTC	110 V: max. 50 A @ peak line
resistance	220 V: max. 100 A @ peak line
Fuse	4 A T (internal fuse size 5 x 20 mm)

© 2002 Scientific-Atlanta, Inc. All rights reserved.

A-2 Technical Specifications 6984278 Rev A