Table of Contents
Advertisement
Chapter 2
Preparing for Installation
Environmental
Appendix A, "Technical Specifications," lists the operating and nonoperating environmental site
requirements for operation of the Cisco CVA122/CVA122E Cable Voice Adapter. The values given
indicate the minimum and maximum values allowed for the cable voice adapter's operation, but if a
measurement approaches the minimum or maximum of a range, it could indicate a potential problem.
You can maintain normal operation by anticipating and correcting environmental anomalies before they
approach a maximum operating range.
For proper airflow, keep the top, sides, and back of the cable voice adapter clear of
Caution
obstructions and away from the exhaust of other equipment.
Power
The Cisco CVA122/CVA122E Cable Voice Adapter does not contain a power switch. After the unit is
installed and powered on, it is intended to remain connected to the network and CPE devices during
normal operations. Before plugging the unit in, verify that the power source is within the values given
in Appendix A, "Technical Specifications" (Table A-1, "Cisco CVA122/CVA122E Cable Voice
Adapter Physical Specifications").
The same power supply supports both domestic (U.S.) and international operation.
Note
Different power cords are required, however, depending on the country of operation.
Use only a Cisco-provided power supply and the appropriate power cord for the country
Caution
of operation. Using any other vendor's power supply or an inappropriate power cord can
cause loss of data or permanent damage.
This equipment has been designed for connection to TN and IT power systems.
Warning
Cabling
When running the coaxial line from the cable TV trunk connection to the subscriber site, consider the
issues of electromagnetic interference (EMI), coaxial cable quality, and distance limitations for
signaling, as described in the following sections.
See Appendix B, "Connector and Cable Specifications," for the specifications for the
Note
Ethernet, telephone, USB, and power cables.
OL-0799-02 (05/2001)
Cisco CVA122/CVA122E Hardware Installation Guide
Site Requirements
2-5
Advertisement
Table of Contents
Troubleshooting
