3405 Frame Manual
3405FR Series Fiber Optic SFP Frame
3405FR Series - 10
Revision 2.3
2.2.
48V DC POWER (48VDC VERSIONS ONLY)
The 3405FR-BNC-48V and 3405FR-DIN-48V frames come standard with two auto-ranging power
supplies that automatically sense the input voltage over the range of 36 to 60 VDC. Power should be
applied by connecting a 2 conductor twisted pair shielded power supply cord to the screw terminals on the
rear panel of each power supply. The power cord should be minimum 18 AWG wire size; maximum
2.5 m in length.
The frame rear panel is fitted with 2 three terminal wiring block for primary and secondary power
connections.
For NEBS compliant installations, the Battery return terminal of this device is an
isolated DC return also known as a DC-I configuration.
Figure 2-8: Locating the External 48V DC Power Connector
CAUTION - TO REDUCE THE RISK OF ELECTRIC SHOCK, EARTHING OF THE
EARTH PIN DC INPUT TERMINAL STRIP MUST BE MAINTAINED
If there is a fuse failure, contact Evertz customer service regarding the power
supply immediately. The power supplies are short circuit protected and should
not blow the fuse under a short circuit condition.
CAUTION: Section 2.2 applies only to 3405FR-BNC-48V and 3405FR-DIN-48V.
For information on connecting power to the 12V version see section 2.1
2.2.1. Power Supply Status Indicators
For orders shipped before September 2009, the 3405PST power supply tray has 2 status indicator LEDs.
The green status indicator LED indicates fault free operation of the 3405PST unit and the presence of DC
power. The upper 3405PST unit corresponds to DC 12V IN1 while, the lower 3405PST unit corresponds