3com CM 4000 Manual De Usuario
K−1
CM 4000 Installation and Operating Manual
Appendix K
Preparing and activating a replacement CM 4000
As discussed on page 2−8, CM 4000s can be installed as a redundant pair, so that failure of one unit will result in control being
taken by the second. A third unit can be kept in reserve and, in the event of a failure, have its address altered and be installed
to provide a quick replacement for the failed unit and restore system redundancy. See Figure K−1.
taken by the second. A third unit can be kept in reserve and, in the event of a failure, have its address altered and be installed
to provide a quick replacement for the failed unit and restore system redundancy. See Figure K−1.
CC−2010 Matrix (Cross-
point bus) cables
House sync required for vertical
interval switching.
Routing
switcher
switcher
CM 4000
Redundancy
Cable
Redundancy
Cable
House time
code
Crosspoint
bus port
bus port
BOP 4000 Break
Out Panel
Hub
10/100baseT
Jupiter LAN
Replacement CM 4000
Figure K−1. A CM can be kept in
reserve, ready to swap with a
failed unit.
reserve, ready to swap with a
failed unit.
CM 4000
CM 4000