NEC DS1000 Correspondence Course Workbook page 97

NEC America
DS1000/2000 Correspondence Course
Install RFI Suppressor Assemblies on station and trunk cables.
For Station and Trunk Cables
Required only when using non-A station and trunk PCBs in 4-slot
cabinets:
—16DSTU PCB P/N 80021
—8ASTU PCB P/N 80041
—4ASTU PCB P/N 80040
—4ATRU PCB P/N 80010
—8ATRU PCB P/N 80011
Not required for 8 slot cabinets. All 8 slot cabinets must use A station
and trunk PCBs.
1. Following the figure to the right, run
the trunk and station cables through
the RFI Suppressor Assembly as
shown.
If you have a 4-slot cabinet that
uses non-A suffixed extension
and trunk PCBs, you must install an RFI Suppressor Assembly on
each trunk cable and each station cable. The suppressors must be
mounted inside the cabinet and as close to the appropriate PCB as
possible.
If you have a 4-slot cabinet that mixes A and non-A PCBs, you only
have to install the suppressor on the cables plugged into the non-A
PCBs (e.g., using 16DSTU PCBs P/N 80021 and 80021A, you only
have to install the suppressor on the cables plugged into the 80021).
DS2000 System Installation
DS1000/2000 Workbook 97