Black Box MT720A-35T Manual De Usuario

This chapter provides mechanical and electrical installation procedures for the Fradswitch. 

The Fradswitch is delivered completely assembled. It’s designed to be installed as a desktop unit 
or to be mounted in a 19-inch rack.

After installing the unit, refer to Chapter 2 of the Packet Switching Guide for system configuration 
information and procedures.

Perform a preliminary inspection of the equipment container before unpacking the unit. 
Evidence of damage should be noted and reported immediately. Unpack the equipment as follows:

1. Place the container on a clean flat surface, cut all straps, and open or remove the top.

2. Take out the Fradswitch carefully and place it securely on a clean surface.

3. Inspect the Fradswitch for damage.

The Fradswitch should be installed within 5 feet (1.5 m) of an easily accessible grounded
AC outlet capable of furnishing 115- or 230-VAC, in accordance with the nominal supply
power of your Fradswitch.

The Fradswitch has eight, sixteen, or twenty-four RJ-45 connectors, one for each
asynchronous data channel. Appendix A of the Packet Switching Guide provides pin
allocations.

The Fradswitch has three main links connectors. The main links connector depends 
on the ordered interface:

• RS-232/V24:

25-pin D-type, female connector

• X.21:

15-pin, female connector

• V.35:

34-pin, female connector

in the Packet Switching Guide provides the pin allocations.

When the Fradswitch is installed in a 19-inch rack, allow at least 36 inches (90 cm) of
frontal clearance for operator access. Allow at least 4 inches (10 cm) clearance at the 
rear of the unit for interface cable connections.

3. Installation