ADCP-75-214 • Issue 2 • September 2006

POWER DISTRIBUTION UNIT

PDU

ALALRM

LOGIC

DC

INPUT

OUTPUT

21307-B

NO

COM

NC

GND RS 485A RS 485B

(NORMALLY

(COMMON)

(NORMALLY

 

OPEN)

 

CLOSED)

 

Figure 7. PDU Alarm Logic and RS-485 Connections

2.3.3Setting the DIP Switch on the PDU

PDU has one set of dip switches to enable or disable the MHU ports. To disconnect unused MHU output (see Figure 8). For the MHU outputs that are used, the DIP switch must be in the “down” position or “ON”. Unused outputs must be disconnected by setting DIP switch in the “up” position.

(Switch 1 and 3 Set to “ON” to Indicate Use of MHU Ports 1 and 3)

Figure 8. Example of DIP Switch Setting on the PDU

Page 9

© 2006, ADC Telecommunications, Inc.