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Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter2 Preparing for Installation
Site Requirements
clothing. Always place the network processing engine, I/O cont roll er, or port a da pter com pon en t
side up on an antistatic surface or in a static shielding bag. If you are returning the item to the
factory, immediately place it in a static shielding bag.
•Ensure the I/O controller and network processing engine ar e fully inse rted in the ir respecti ve chassis
slots and 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 t he re spective port adapter lever
is in the locked position.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms.
Site Requirements
The environmental monitoring functionality in the Cisco7204 protects the system and components from
potential damage from overvoltage and overtemperature conditions. To assure normal operation a nd
avoid unnecessary maintenance, plan your site configuration and prepare your site before installation.
After installation, make sure the site maintains an ambient temperature of 32°F through 104°F (0°C
through 40°C), and keep the area around the chassis as free from dust as is practical.
The following sections address the site environment requirements for the Cisco7204.
AC and DC Power
The AC-input power supply uses a power factor corrector that allows the Cisco 7204 to operate on input
voltage and frequency within the ranges of 100 to 240 VAC and 50/60 Hz.
Note We recommend attaching dual power supplies to independent power sources for full redundancy. We also
recommend an uninterruptable power source to protect agains t power fail ure s at your si te . Ea ch
AC-input power supply operating at 120 VAC requires a minimum of 5A service. We recommend
powering the Cisco 7204 from a 15A receptacle at the power source.
The DC-input power supply allows the Cisco 7204 router to operate at –48 VDC nominal in North
America and –60 VDC in Europe.
Refer to Table 1 -1 in “Chapter 1, “Product Overview”” for system power specifications, including input
voltage and operating frequency ranges.
Plant Wiring
Following are guidelines for setting up the plant wiring and cabling at your site. When planning the
location of the new system, consider the distance limitations for signaling, EMI, and connector
compatibility, as described in the following sections.