Clear-Com FOR-22 - Manual (Page 9)

Vitec Group Communications
FOR-22 Dual 4-Wire Interface Instruction Manual 2 - 1
INSTALLING THE
FOR-22 INTERFACE
This chapter includes the following topics about installing the FOR-22
interface:
• Overview of interface frames and power supplies.
• Installing the interface in an interface frame.
• Wiring the interface to the matrix and to external devices.
• Adjusting the interface’s front-panel controls after installation.
INTERFACE FRAMES AND POWER
SUPPLIES
Interface modules convert the 4-wire signals of a central matrix port to
some other form of communication, such as for telephones, camera
intercoms, two-way radios, and so on.
Each interface module connects to both the central matrix and to the
external device through cable attached to hardware connectors on the
rear of the interface module. To house these interface modules,
Clear-Com offers various types of interface frames. The two interface
frames which can house the FOR-22 dual 4-wire/radio interface are
the IMF-3 and the IMF-102 frames, which are described below.
IMF-3 Interface Module Frame
The IMF-3 interface frame holds up to 11 interface modules in three
rack units (3 RU) of a standard Electronics Industry Association
19-inch wide (48.26 cm) rack. The frame holds a modular,
rear-mounted connector panel for each interface, containing two RJ-45
connectors for connecting cable to matrix ports, and two DB-9
connectors for connecting cable to external devices. Figure 2-1
illustrates the rear panel of an IMF-3 interface frame, with 11
rear-panel assemblies installed.
The frame uses an external PSU-101 rack-mounted power supply to
supply power to the interface modules. A second PSU-101 can be
attached for redundancy.
As a rule-of-thumb, one PSU-101 power supply unit is required for
every two IMF-3 frames. A PSU-101 power supply unit requires 90 to
260 VAC at 45 to 65 Hz with a maximum dissipation of 80 watts. A
PSU-101 connected for redundancy requires very little current unless
used.
2