Cisco MGX 8950 Installation Manual page 52

Installation Procedures
Complete the following steps to connect the external clock using the wire-wrap adapter:
Remove the pin cover from the adapter (see
Step 1
Figure 3-35 Removing the Pin Cover from the Adapter
Insert the shielded clock source cable through the hole of the pin cover. See
Step 2
Note
Figure 3-36 Inserting the Cable through the Pin Cover
Note
Step 3 Use a wire-wrapping tool to wrap the shield drain wire to the ground pin (pin 3 or 6) of the adapter. The
shield drain wire is the bare wire shown in
Figure 3-37 Wires Wire-Wrapped to Pins
Cisco MGX 8950 Hardware Installation Guide
3-52
A shielded clock source cable must be used to ensure EMI containment.
The length of the exposed (unshielded) wires should be 2 to 4 inches. The maximum length
must not exceed 4 inches.
Figure 3-35). The pin cover provides ESD shielding.
8
7
6
5
Figure 3-37.
8
4
7
3
6
2
5
1
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
Chapter 3 Installing a Cisco MGX 8950
Figure 3-36.
4
3
2
1