16
Cisco 10008 Router PRE4 Installation and Configuration Guide
OL-13840-01
Installing or Replacing a PRE4
Note
Failure to use the BITS Filter module may result in electromagnetic emissions exceeding required levels
Caution
Use extreme caution when wire-wrapping the pin connections on the BITS Filter module. Incorrect wire
connections will cause damage to the equipment.
Caution
The BITS clock distribution is rated for intra-building connection only.
Use the following procedure to connect the BITS clock to the wire-wrap pins on the BITS filter card:
Step 1
Attach an antistatic strap to your wrist or ankle and to an ESD socket on the chassis, or to a bare metal
surface on the chassis or frame.
Step 2
Loosen the screw and remove the rear cover on the chassis to expose the BITS, Alarm, and DC power
supply contacts (see
Table 5
Wire Wrap Connector Pinouts
Pin Number
Function
Slot
1-A
TIP-A
PRE slot 0A
2-A
SHIELD-A
3-A
RING-A
1-B
TIP-B
PRE slot 0B
2-B
SHIELD-B
3-B
RING-B