Installation

NOTE: The TRANSITION Networks 48-to-12 VDC External Power Supply is shipped with four (4) attached feet.

1.For installation, place on any well-ventilatedtable-top or shelf with access to a 48 VDC power source.

2.Connect barrel connector attached to 12 VDC cord on External Power Supply to media converter or similar device

PWR	LKF	LKC
	RXF	RXC

CAUTION: Ensure that 48 VDC power source is NOT powered when connecting power to the 48-to-12 External Power Supply. Failure to observe this caution could result in damage to, and subsequent failure of, the 48-to- 12 External Power Supply and of any attached device.

3.Ensure that external power source is powered OFF.

Compliance	UL listed EN60950; FCC & CISPR class A; CE Mark
Dimensions	5.6" x 3.3"" x 1.6""
Power Distribution	+12VDC at 0.8 A maximum.
Power Consumption	14 watts maximum
Long Term Stability	0.1% for eight (8) hours (after 20 minutes warm-up)
Efficiency	70 % (typical)
Noise and Ripple	1% peak-to-peak of output voltage (typical)
MTBF	Greater than 60,000 hours with typical load operating
	at 20°C ambient temperature (calculated according to
	MIL-HDBK-217E)
Environment	Typical Operating Temperature*:	0-50°C (32° to 122° F )
	Storage Temperature:	-20 to 85°C
	Humidity:	10-90%, non condensing
	Altitude:	0-10,000 feet
Warranty	Lifetime

*At operating temperature range 50°C-70°C, operates linearly to 50% of full rating.

		DECLARATION OF CONFORMITY




Name of Mfg:	Transition Networks
	6475 City West Parkway, Minneapolis MN 55344 USA
Model:	SPS-48V External Power Supply
Part Number:	SPS-48V

Regulation: EMC Directive 89/336/EEC

Purpose: To declare that the SPS-48Vto which this declaration refers is in conformity with the following standards.

EMC-CISPR 22: 1985 Class A; EN 55022: 1988 Class A; EN 50082-1:1992; EN 60950 A4:1997; IEC 801.2, IEC 801.3, and IEC 801.4; IEC 950

I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and Standard(s).

			_May 8, 2001_____
	Stephen Anderson, Vice-President of Engineering		Date

INSTALLATION

MTBF

Environment

DECLARATION OF CONFORMITY