Comtech EF Data NetPerformer SDM-9 Series, Руководство по установке оборудования

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SDM-9XXX Series Hardware Installation Guide
3-26 Memotec Inc.
3.10 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-9220 and SDM-9230 products, in all
countries
• For FXO, FXS and ISDN-BRI S/T connections on the SDM-9220 UAC and
SDM-9230 UAC, 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 3-13 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 adaptor is too bulky to permit it.
Port Type Models affected Where required Ferrite required
Cable
Wrapping
E&M/PTT All SDM-9220/
9230 models
All countries LFB159079-000
(Steward)
4 times
FXO SDM-9220/9230
UAC models
EU and Russia
only
742 717 33, and single
Wrap (Wurth)
6 times
FXS SDM-9220/9230
UAC models
EU and Russia
only
742 717 33, and single
Wrap (Wurth)
6 times
ISDN-BRI
S/T SDM-9220/9230
UAC models
EU and Russia
only LFB143064-000
(Steward)
4 times
Table 3-3: SDM-9220/9230 Ports Requiring a Ferrite