FOR-22 4-WIRE INTERFACE
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 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 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.
For more information on the IMF-3 frame, refer to its manual in the Eclipse
manual set.
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