Cisco Systems AS5800 manual Connecting the Monitor Cable, Connecting the DC-Interconnect Cables

Connecting Cables to the Dial Shelf

Figure 3-13 Connecting the DC-Interconnect Cables

PEM

–48V –48V	C	NC NO
RTN		–48V –48V	C	NC NO
		RTN

–48V	–48V
	RTN
DC terminal block		Monitor			Ground
		cable	Hex nut
					Red
			Red
		Black		BUS	Black
			BUS
			—	+
			terminal	terminal
			stud	stud

H11158

Step 4 Fit the exposed wire end of the black insulated cable into the DC terminal block labeled –48V on each PEM and securely tighten the terminal block connector screws. Repeat for the other PEM. (See Figure 3-13)

Note You must attach the red DC cables to the stud labeled BUS + on the AC-input power shelf and connect the other end to a –48V RTN terminal on each PEM. You must attach the black DC cables to the stud labeled BUS – and connect the other end to a –48V terminal on each PEM. If the two DC conductors entering the PEM terminal block are reversed, a yellow warning LED on the PEM lights to indicate a miswire. No damage will occur; however, you must power OFF the power at the source and reverse the connections.

This completes the DC power cabling installation. You must now connect the monitor cable from the AC-input power shelf to the dial shelf filter module.

Connecting the Monitor Cable

For detailed cabling specification information, refer to Appendix A, “Cisco AS5800 Specifications.” To connect the monitor cable, complete the following steps:

Step 1 Attach the monitor cable DB-9 plug to the DB-9 receptacle at the base of the dial shelf filter module. (See Figure 3-14,or Figure 3-14for an enhanced power shelf.)

Step 2 Tighten the jackscrews.

3-18Cisco AS5800 Universal Access Server Hardware Installation Guide