FOR-22 4-WIRE INTERFACE
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OPERATING THE FOR-22
INTERFACE
This chapter describes how to use the FOR-22 dual 4-wire interface. System
operators can use this manual once the Eclipse System is correctly installed and
configured with the Eclipse Configuration System (ECS) software, and after the
FOR-22's internal jumpers are set.
For information on configuring the FOR-22 interface, see the separate manual
for the Eclipse Configuration System.
DESCRIPTION
The FOR-22 dual 4-wire/radio unit forms an interface between an Eclipse
matrix and two external 4-wire devices, allowing the matrix and the 4-wire
devices to communicate with each other.
The external 4-wire devices that you can connect to the matrix with the FOR-22
interface include camera intercoms, two-way radios, microwave and satellite
links, IFBs, and program audio.
Each of the two channels of the FOR-22 unit provides the following functions
for a port in the Eclipse System:
• Transformer isolation between an external 4-wire audio device or system and
the port.
• A set of relay contacts which are activated by a call signal from the matrix.
• An LED indicator that lights when the relay is active.
• An optically isolated call signal input (from the external device to the matrix).
• Separate "send" (to external device) and "receive" (from external device) level
controls on front panel.
• Send levels adjustable for line level, IFB feed level, and microphone level (set
by internal jumpers).
• A 2-color LED indicates correct signal level to external device.
The FOR-22 occupies one slot in an IMF-3 or IMF-102 interface module
frame. The two FOR-22 channels connect to the matrix frame via two 8-pin
RJ-45 connectors, and connect to external devices via two DB-9 9-pin
connectors.
The installation chapter of this manual gives more information on interface
frames and on wiring the FOR-22 unit to the matrix and to external devices.
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