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Installing the UCH on the Cisco RFGW-10 UEQAM RF Switch Card
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent failures. The Cisco RFGW-10 UEQAM and
its modules contain printed circuit cards that are fixed in a metal carrier. Electromagnetic interference
(EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps
to protect the cards from ESD, it is recommended to use an antistatic strap when you handle the modules.
Following are the guidelines for preventing ESD damage:
•
•
•
•
Caution
For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megaohms.
Note
The
the Cables in the UCH2
cables and the maintenance of the Cisco preconfigured cable bundles.
Installing the UCH on the Cisco RFGW-10 UEQAM RF
Switch Card
Caution
The UCH must be used for all cable connections to the RF switch line card. Failure to use the UCH may
cause permanent damage to the line card connectors, resulting in low or no RF output in the downstream
and low or no RF input in the upstream.
To install the UCH, complete the following steps:
Step 1
Position the UCH red line to the red line on the RF switch card (see
Cisco RF Gateway 10 Hardware Installation Guide
6-8
Always use an ESD preventive wrist or ankle strap and ensure that it makes good skin contact.
Before removing a card from the chassis, connect the end of the equipment's strap to a bare metal,
unpainted surface on the chassis or rack-mount. Make sure that the chassis and/or rack has a
grounding cable installed. For more details see
on page
3-18.
Handle components by the carrier edges only; avoid touching the card components or any connector
pins.
When removing a module, place it on an antistatic surface or in a static-shielding bag. If the module
will be returned to the factory, place it in a static-shielding bag immediately.
Avoid contact between the modules and clothing. The wrist-strap protects the card from ESD
voltages on the body only and those on the clothing can still cause damage.
Installing the UCH on the Cisco RFGW-10 UEQAM RF Switch Card
sections describe the connection and removal process for the customized RF
Chapter 6
Cabling the Cisco RFGW-10 UEQAM
"Attaching a Chassis Ground Connection" section
and
Figure
6-7).
Installing or Replacing
OL-16264-04
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