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Connecting Power
See Table A-1 on page A-1 for AC-input power supply specifications, including input voltage and
operating frequency ranges. Cisco recommends that you follow these precautions:
•
•
•
Adhere to the safety guidelines presented in the "Safety" section on page 2-1 before
Note
following procedures in the remainder of this chapter. Be sure all equipment to be
connected to the cable voice adapter is powered off.
Connecting Power
This section describes how to connect the Cisco CVA122/CVA122E Cable Voice Adapter to power
using the AC-input power supply. For information about using the CVA120 Series UPS, see the
documentation that accompanies the UPS.
See "Verifying Power Requirements" section on page 3-9 to verify that the external power source is
Step 1
adequate for the cable voice adapter.
Turn on power to all other devices that will be connected to the Cisco CVA122/CVA122E Cable Voice
Step 2
Adapter (such as a PC, Ethernet hub, or USB hub).
Plug the 8-pin end of the power supply output cord into the power connector at the rear of the cable
Step 3
voice adapter. Push the plug into the connector until it locks. (See Figure 3-5.)
Cisco CVA122/CVA122E Hardware Installation Guide
3-10
Check the power at the subscriber site before and after installation to ensure that you are receiving
clean power. Install a power conditioner if necessary.
If plugging the cable voice adapter into any Uninterruptible Power Supply (UPS) other than the
CVA120 Series UPS, verify that the total power and current requirements used by all devices
plugged into the UPS are within the maximum limits of the UPS.
Do not work on the system or connect or disconnect any cables (Ethernet, USB, cable, or power)
during periods of lightning activity—the possibility of serious physical injury exists if lightning
should strike and travel through those cables. In addition, the equipment could be damaged by the
higher levels of static electricity present in the atmosphere.
Chapter 3
Installing the Cisco CVA122/CVA122E Cable Voice Adapter
OL-0799-02 (05/2001)
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Troubleshooting
