6 FSU User Manual 61200.130L1-1Chapter 2. InstallationPower UpEach FSU unit is provided with a captive eight-foot power cord,terminated by a three-prong plug which connects to a grounded115 VAC power receptacle.Power to the FSU must be provided from a grounded 115 VAC, 60 Hzreceptacle.REAR PANELThe FSU is equipped with three DB-25 connectors labeled DTE 1,DTE 2, and DCE. Connections to the dedicated circuit, dialbackup circuit (future enhancement), and VT 100 interface areprovided through the 8-pin telco jacks labeled MAIN, BACKUP,and CONTROL. Pin assignments for these connectors are givenin the appendix Pinouts. The FSU rear panel is shown in Figure 2-1.The FSU base unit (part number 1200130L1) is not equipped with aninternal DSU. Therefore, the MAIN and BACKUP connectors are notprovided.The BACKUP connector is provided for future enhancements (FSU dialbackup options).