C-COR.net FlexNet E7, Руководство по эксплуатации оборудования

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Rev F Reference Tables C-3
C
3. Subtract the E7 Line Extender's factory-installed alignment from the system cable loss to
determine the dBs of cable equalization/simulation required at the highest frequency.
■
If X dB is positive (+), refer to the SEQ table that lists the accessories being used in the
system. Select the SEQ having a value as close to X dB as possible, as listed in the “dB
of Cable Equalized at Highest Frequency” column.
■
If X dB is negative (-), refer to the SCS table that lists the accessories being used in the
system. Select the SCS with a value as close to X dB as possible, as listed in the “dB of
Cable Simulated at Highest Frequency” column.
Installing Plug-in Accessories
Equalizers are keyed so they can only be installed one way. The E7 Line Extenders may have factory
installed jumpers that provide a continuous signal path across accessory plug-in areas. The two types
of jumpers include:
■
soldered-in jumpers
■
removable jumper wires
Before installing any accessories, these jumpers/jumper wires must be removed. Soldered-in jumpers
must be cut from the motherboard (see Soldered-in Jumper Removal below for instructions), while
removable jumper wires can be pulled out. When the jumpers/jumpers wires are removed, use an
SPB-0 or SEQ-0 where appropriate to provide continuity (zero loss) for the signal path.
System Cable Loss
– Factory Alignment/Cable Loss
= X dB
Note : Installing and removing plug-in accessories disrupts customer service.