Chapter 4. Trunks and Lines Section 300-Installation4-44 DBS Manual - Revised April 2000 DBS-2.3/9.2-300Trunk and Line ExpansionGuidelines• The EC/TRK slot can be used for a trunk or extension card.• Different expansion connectors are used for trunks and extensions:Note: With the DBS 96, the expansion connector is not required to usethe EC/TRK slot for an extension card. The DBS 96 uses connector CN14to accommodate an extension card in the EC/TRK slot. Table 4-22 onpage 4-35 shows the pinouts from the EC/TRK slot to CN14.Installation1. Install a trunk or extension card in the slot marked EC/TRK.2. Connect the appropriate expansion connector to the main cabinet withtwo screws, as shown in Figure 4-18.3. Connect the ground cable from the FG terminal of the expansionconnector to a screw already in use on the right side of the main cabinet.4. Connect CN2 of the expansion connector to CN15 on the mother board.5. Prepare a cable with a 50-pin connector on one end and wiring for theMDF on the other end.6. Cross-connect the cable to the trunks or extensions through the MDF. SeeTable 4-3 “Pinouts and trunk numbers for trunk expansion connectorCN1” on page 4-6 or Table 4-23 “Pinouts and color codes for extensionexpansion connector CN1” on page 4-36.7. Connect the 50-pin connector to CN1 on the expansion connector.Expansion connector Part No.Trunk expansion connector VB-43120Extension expansion connector VB-43121
