Memotec NetPerformer SDM-9120 Series, Руководство по установке оборудования

Страница: 55 / 161

Hardware Installation
Memotec Inc. 3-27
3.8 Installing the Ferrites (EMI Filters)
NOTE: Ferrites are
not
provided with the product package.
Ferrites, or EMI filters, are required in the following circumstances:
•
For E&M/PTT connections on all SDM-9XXX Series products, in all countries.
•
For FXO and FXS connections on the SDM-9XXX Series UAC models, in the
European Union and Russia only. These ferrites ensure compliance with
standard
EN 55024:2010 + A1 + A2 .
Table 3-3 provides details on ferrite requirements.
► To install a ferrite:
1.
Thread the cable from the NetPerformer port through the ferrite opening
2.
Wrap the cable around the ferrite the number of times required for the port, referring
to
Table 3-3 . Figure 3-17 shows an example of a single wrap around the ferrite.
NOTE:
Wrapping is not required in the case of an E1-75 connection, as the coaxial cable
connected to the RJ48 to BNC adapter is too bulky to permit it.
Port Type Models affected
Where
required
Ferrite required
Cable
Wrapping
E&M/PTT
All
SDM-9XXX
Series models
All countries
LFB159079-000
(Steward)
4 times
FXO
SDM-9XXX
Series
UAC
models
EU and Russia
only 742 717 33, and
single Wrap (Wurth)
6 times
FXS
SDM-9XXX
Series
UAC
models
EU and Russia
only 742 717 33, and
single Wrap (Wurth)
6 times
Table 3-3 SDM-9XXX Series Ports Requiring a Ferrite