Operation, Introduction, Operation -1 – Clear-Com FL-7 User Manual
Page 7: Introduction -1 operation -1

F L - 7 C A L L S I G N A L F L A S H E R
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OPERATION
INTRODUCTION
Congratulations on choosing this Clear-Com product. Clear-Com was
established in 1968 and remains the market leader in providing intercoms for
entertainment, educational, broadcast and industrial applications. The
ruggedness and high build-quality of Clear-Com products defines the industry
standard. In fact, many of our original beltpacks and main stations are still in
daily use around the world.
The FL-7 Call Signal Flasher is a compact, low profile module which provides a
visual and/or audible call signal indication whenever a call signal is present on the
intercom line. It is used to alert people whose attention is usually focused on
other work.
OPERATION
A 3-position switch on the front panel selects a flashing LED, a ringing sound, or
both. The brightness control on the front panel adjusts the brightness of the flash
so that it may be set to a level suitable for the ambient light level. A volume level
control on the front panel adjusts the loudness of the ringing sound.
Figure 1-1: Front and Rear View of FL-7
When a call signal is generated from an intercom station or beltpack, the strobe
will flash and/or the ring will sound depending on the unit setting. The flashing
light persists for a few seconds after the call signal disappears to make sure it is
seen. The ringing sound tracks the call signal, allowing coded signaling. For
example, two rings may alert one person to the intercom, while three rings will
alert another.
Call Signal Flasher
Both
Tone
Flash
Brightness
Tone Level
FL-7
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