Carrier Access 770-0125-AB User Manual

3. If you are mounting the chassis in a 23-inch rack, use the four screws that 

come with each extension bracket (provided with the chassis) to attach 
the brackets to the mounting ears.

4. Attach the chassis to the rack by inserting four screws on each side of the 

chassis through both the mounting ears or extensions on the side of the 
chassis and the rack rails.

The BROADway chassis accepts a DC power feed directly into the chassis.

To power the BROADway system from an AC supply (110–230 VAC), you must 

use an external AC-to-DC converter.

As when installing any additional equipment within an existing or planned rack environment, consider 
how powering the BROADway chassis will impact the overall loading of the branch circuit used at the 
rack. A fully loaded BROADway chassis requires approximately 160W to power the system. When 
installing in a rack, make sure that a reliable ground (earth) path is maintained; the BROADway chassis 
is intended to be connected to a good Earth ground such as that provided by building steel, a cold water 
pipe or, preferably, a properly constructed ground plate or bonding network.

To connect power and ground to the BROADway chassis:

1. Verify that the ON/OFF (O/I) switch on the back of the chassis is set to OFF (O).

2. Connect the Earth ground stud on the back of the chassis to a suitable Earth ground as 

previously described.

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