Site Requirements; Ac Power - Cisco 7246 - uBR Router Hardware Installation Manual

Chapter 2 Preparing the Cisco uBR7200 Series Router for Installation
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Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms.

Site Requirements

To ensure normal operation and avoid unnecessary maintenance, plan your site configuration and
prepare your site before installation. Take into account the following criteria:
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To locate the most reliable channels for your downstream and upstream channel plans, we recommend
Note
that you perform a sweep of all available channels for at least a 24-hour period to verify the presence or
absence of impulse or ingress noise.

AC Power

The AC-input power supply uses a power factor corrector that allows the Cisco uBR7200 series router
to operate on input voltage and frequency within the ranges of 100 to 240 VAC and 50/60 Hz.
Note We recommend an uninterruptable power source to protect against power failures at your site. The
AC-input power supply has an electrical current rating of 7A for the Cisco uBR7426 and Cisco
uBR7246VXR routers.
See
including input voltage and operating frequency ranges.
OL-5421-03
Ensure that the I/O controller and network processing engine are fully inserted in their respective
chassis slots and that their captive installation screws are tightened. The captive installation screws
prevent accidental removal, provide proper grounding for the system, and help ensure that the bus
connectors are seated in the midplane.
Ensure that each port adapter is fully inserted in its chassis slot and the port adapter retention clip
is in the locked position.
Ensure that each cable interface card is fully inserted in its chassis slot and that its captive
installation screws are tightened.
Ensure that the cable clock card is fully inserted in its chassis slot and that its captive installation
screws are tightened.
Verify that your cable network meets system requirements and DOCSIS or EuroDOCSIS
downstream and upstream specifications.
Select forward and reverse channel frequencies from the range specified in your channel plan.
Make sure that the site maintains an ambient temperature of 32 to 104
area around the chassis as free from dust as is practical.
Appendix A, "Cisco uBR7200 Series Router Specifications,"
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide

Site Requirements

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F (0 to 40 C), and keep the
for system power specifications,
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