Many instances you will need to connect to common interfaces(USB,GPIB,ENET,RS232).
Bulkhead are connectors interface made to allow station’s internal cable/connector access to outside connector/cable.
Bulkhead are typically mounted on 19in rack panels
Box /Panel mount connector are another method to allow interface to the test station from the outside.
For the common interface mention above look at this site for ideas L-com : www.L-com.com they also have different blank panels and shelfs.
Test Engineers Resource 