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Chapter 6:
Overview
All Xedge Node Timing Modules (NTMs) are the same size and plug into a special slot on the back
panel of the Xedge 6280, 6640 or 6645 chassis. The modules provide front panel connectors and
LEDs for quick assessment of the NTM communication status. This chapter describes installing the
Xedge NTM-DS1 and Xedge NTM-E1.
Installation Guidelines
The following installation guidelines apply to all Xedge NTMs.
•
When handling NTMs, always use an antistatic wrist strap to prevent static discharge damage
to the electronic circuits.
•
Before installing any NTM, first set any jumpers or switches for your specific network
configuration, as described in this chapter.
•
NTMs can only be installed in the reserved slots shown in the Xedge 6280 or Xedge 6640/6645
chassis
(Figure 2-7
•
Once all NTMs are installed and connected, refer to the appropriate Xedge configuration
manual listed on the inside cover of this document for detailed configuration procedures, as
necessary.
Basic Installation Procedure
Any NTM occupies the reserved slots located on the far left or far right slots at the rear panel of the
switch. To install and configure any NTM, perform the following steps:
1. For each NTM-T1 in a redundant NTM-T1 application, set X16 jumper for PRI or SEC as
described in the T1 section of this chapter. For a nonredundant NTM-T1, leave the jumper in
the factory set PRI position as shown in
2. For all NTM-E1 applications, set X1 and X2 jumpers for your network requirements, as
described in the E1 section of this chapter.
3. Install the NTM in the reserved Primary or Secondary slots on the back panel of the Xedge
chassis, as shown in
the slot and slide the module inward until it stops.
4. Connect the appropriate I/O line(s) to the NTM's front panel connectors, using the proper
cable(s) as listed in
DS1 section of this chapter.
032R440-000
Issue 17
Network Timing Modules
or
Figure
2-9, respectively).
(Figure 2-7
or
Figure
Table
1-6. Any special cabling requirements are discussed in the E1 or
Xedge 6000 Hardware
Installation & Setup Guide
Figure
6-2.
2-9. Insert the edges of the module into the tracks of
6-1
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