SMART Embedded Computing ATCA-F125 Assembly, Installation And Use page 18

Safety Notes
Overheating and Blade Damage
Operating the blade without forced air cooling may lead to overheating and thus damage
of the blade. When operating the blade, make sure that forced air cooling is available in the
shelf.
Injuries or Short Circuits
Blade or power supply In case the ORing diodes of the blade fail, the blade may trigger a
short circuit between input line A and input line B so that line A remains powered even if it
is disconnected from the power supply circuit (and vice versa). To avoid damage or injuries,
always check that there is no more voltage on the line that has been disconnected before
continuing your work.
Configuration Switches/Jumpers
Product Malfunction
Switches marked as "Reserved" might carry production-related functions and can cause
the product to malfunction if their setting is changed.
Do not change settings of switches marked as "reserved".
Product Damage
Setting/resetting the switches during operation can cause damage to the product.
Check and change switch settings before you install the product.
Product Damage
Too much force may damage the reset switch.
Use minimal force when pressing the reset switch.
Cabling and Connectors
Blade Damage
The RJ-45 connector(s) on the face plate are twisted-pair Ethernet (TPE) or E1/T1/J1
interfaces. Connecting an E1/T1/J1 line to an Ethernet connector may damage the product.
Make sure that TPE connectors near your working area are clearly marked as

network connectors.
Verify that the length of an electric cable connected to a TPE bushing does not

exceed 100 meters.
Make sure the TPE bushing of the system is connected only to safety extra low

voltage circuits (SELV circuits).
If in doubt, ask your system administrator.
18 ATCA-F125 (6873M Artwork) Installation and Use (6806800J94P)
Safety Notes