1-4
FIM-102D FIBER INTERFACE
1. Matrix Plus intercom stations transmit
analog
audio signals and
digital
data signals to the first FIM-102D unit via
copper cable terminated with RJ-45 connectors.
2. The first FIM-102D unit converts the analog audio signals to digital audio signals through an analog-to-digital
converter (ADC) located on the FIM-102D unit’s main circuit board.
3. The first FIM-102D unit then multiplexes (combines) the digital audio signals with the already digital data signals.
4. The first FIM-102D then converts the multiplexed digital signal into an optical signal.
5. The first FIM-102D then transmits the optical signal over up to 12 miles (20 km) of fiber-optical cable to the
second FIM-102D unit, where a similar but reverse process occurs to convert the signal back to its original format.
6. The second FIM-102D unit converts the received optical signal to a digital signal.
7. The second FIM-102D then “demultiplexes” (separates) the digital signal back into it’s separate audio and data
signals for each intercom unit.
8. The second FIM-102D then converts the
digital
audio signals for each intercom station to
analog
audio signals by
sending the signals through a digital-to-analog converter (DAC) located on the FIM-102D unit’s main circuit board.
9. The second FIM-102D unit then transmits the analog audio and digital data signals for each intercom station to the
central Matrix over copper cable terminated with RJ-45 connectors.
