Unit installation

Installation and Operation Manual Chapter 2 Installation and Setup
FCD-E1 Setting the Internal Jumpers and Switches 2-3
2.5 Setting the Internal Jumpers and Switches
This section provides information on the functions of the internal jumpers and
switches, to help you select the correct setting for your particular application, and
gives step-by-step instructions for performing the internal settings. The default
settings are also listed.
All the other configuration actions can be performed from the front panel, from a
supervision terminal, or from a network management station after the installation is
completed. Information and detailed instructions for these operations appear in the
Chapter 3 and Chapter 4.
Electrical Shock Hazard
Access to the inside of the unit is permitted only to qualified and authorized
service personnel.
Disconnect the unit from the power line and from all the cables before
removing cover.
Line voltages are present inside the FCD-E1 when it is connected to power
and/or to the lines. Moreover, under certain fault conditions dangerous
voltages may appear on the lines connected to the FCD-E1.
Any adjustment, maintenance, and repair of the opened instrument under
voltage should be avoided as much as possible and, when inevitable, should
be carried out only by a skilled technician who is aware of the hazard involved.
Capacitors inside the instrument may still be charged even after the
instrument has been disconnected from its source of supply.
FCD-E1 contains components sensitive to electrostatic discharge (ESD). To prevent
ESD damage, avoid touching the internal components, and before moving
jumpers, touch the FCD-E1 frame.
FCD-E1 Printed Circuit Boards
The type and number of printed circuit boards of FCD-E1 depends on the specific
version. Figure 2-1 identifies the boards installed in each FCD-E1 version.
All the FCD-E1 versions include a common main board. The main board includes
the common signal processing circuits, and the interfaces of the main link and data
channel 1.
• The FCD-E1 versions with a second data channel have an additional interface
board, for data channel 2 or Ethernet LAN interface. This board does not
include user jumpers.
• The FCD-E1 versions with a sublink have a sublink interface board. This board
includes user jumpers; in addition, when changing the main link interface from
balanced to unbalanced, it is necessary to temporarily remove this board to
gain access to the jumpers located on the main board.
Warning
Caution