This section contains instructions for installing the Express Orderwire Multi-
direction Unit, including locating and mounting instructions and electrical connec-
tions for the equipment.
2.2 SPECIAL TOOLS REQUIRED
No special tools are required for installing the unit.
mATDIG AND MOUNTING
The location of the unit will vary depending upon the requirements of the
The unit is designed for mounting in a standard 19-inch equipment rack.
Install the unit in the assigned rack space, and secure with the four front-panel
2.4 ELECTRICAL CONNECTIONS
-48 Vdc power is connected to TB7 terminals 1 (-) and 2 (+). All voice-
frequency input and output connections are made to solderless connectors on
barrier-type terminal strips at the rear of the assembly. (See figure 2-1. )
Strapping for changing the number of outputs is also accomplished at these barrier
strips. Tables 2-1 and 2-2 give the printed wiring board complement and strapping
options, respectively. Strapping information for the adjustable attenuator boards is
given in figure 7-4.