Rfi Suppressor Assemblies; Installing Rfi Suppressor Assemblies - NEC DS2000 Hardware Manual

RFI Suppressor Assemblies

RFI Suppressor Assemblies

Installing RFI Suppressor Assemblies

You must install RFI Suppressor Assemblies as follows (see Figure 1-10 Installing RFI Suppressor Assemblies
below). The suppressors must be mounted inside the cabinet and as close to the appropriate PCB as possible.
For Station and Trunk Cables
– Only install these assemblies if you are installing non-A station and trunk PCBs in a 4 slot cabinet. If
you have a mixture of A and non-A PCBs, you only need to install the assemblies on the non-A PCBs.
– RFI assemblies on station and trunk cables are not required with 8 slot cabinets, since these cabinets
use only A PCBs.
For Ground Wires
– You must install a separate RFI assembly for the ground wire(s) in all systems.
– If your system has 2 ground wires, install them both in the same assembly.
For CPU Connections
– You must install a separate RFI assembly for the CPU mod jack and RS-232 cables in all systems.
Install both cables in the same assembly.
For Station and Trunk Cables
• Required only when using
non-A station and trunk
PCBs in 4 slot cabinets:
— 16DSTU PCB P/N 80021
— 8DSTU PCB P/N 80041
— 4ASTU PCB P/N 80040
— 4ATRU PCB P/N 80010
— 8ATRU PCB P/N 80011
• Not required for 8 slot cabi-
nets. All 8 slot cabinets must
use A station and trunk PCBs.
1-10 Section 1: Installing the Cabinet
For Ground Wires
• Required for all installations.
Figure 1-10: Installing RFI Suppressor Assemblies
For CPU Connections
• Required on CPU mod jack
and RS-232 cables for all
installations.
DS2000 Hardware Manual