Usb Serial Console; Interference Considerations; Electromagnetic Interference; Site Cabling Guidelines - Cisco ASR 1001-X Hardware Installation Manual

Site Cabling Guidelines

Both ports have RJ-45 connectors, support RS-232 asynchronous data, and have distance recommendations
specified in the IEEE RS-232 standard.

USB Serial Console

The USB serial console port connects directly to the USB connector of a PC using a USB Type A to 5-pin
mini USB Type-B cable. The USB Console supports full speed (12Mbps) operation. The console port does
not support hardware flow control.
Always use shielded USB cables with a properly terminated shield. The USB serial console interface cable
Note
must not exceed 3 meters in length.
• Only one console port can be active at a time. When a cable is plugged into the USB console port, the
RJ-45 port becomes inactive. Conversely, when the USB cable is removed from the USB port, the RJ-45
port becomes active.
• 4-pin mini USB Type-B connectors are easily confused with 5-pin mini USB Type-B connectors. Only
5-pin mini USB Type-B is supported.

Interference Considerations

When wires are run for a significant distance, there is a risk that stray signals will be induced on the wires as
interference. If interference signals are strong, they can cause data errors or damage to the equipment.
The following sections describe sources of interference and how to minimize its effects on the Cisco ASR
1001-X Router.

Electromagnetic Interference

All the equipment powered by AC current can propagate electrical energy that can cause electromagnetic
interference (EMI) and possibly affect the operation of other equipment. The typical sources of EMI are
equipment power cords and power service cables from electric utility companies.
Strong EMI can destroy the signal drivers and receivers in the Cisco ASR 1001-X Router and even create an
electrical hazard by causing power surges through power lines into installed equipment. These problems are
rare, but could be catastrophic.
To resolve these problems, you need specialized knowledge and equipment, which could consume substantial
time and money. However, you should ensure that you have a properly grounded and shielded electrical
environment, paying special attention to the need for electrical surge suppression.
Table 15: EMC and Safety Standards , on page 36
Cisco ASR 1001-X Router.
Table 15: EMC and Safety Standards
EMC Standards
Cisco ASR 1001-X Router Hardware Installation Guide
36
Preparing Your Site for Installation
lists electrode magnetic compliance standards for the
FCC 47 CFR Part 15 Class A
VCCI Class A
AS/NSZ Class A