Definitions for "BREAKOUT BOX"
A testing device for multiple line cables that makes a connection to each line to see if a signal is present.
A test device that can be attached to a cable, making it easy to connect a wire to any conductor. Some breakout boxes also feature LEDs to monitor signals on each line.
a device that lets you view the logic state of many, or all, of the signal leads, as well as providing some ability to interrupt some (or all) of the signal leads