Fiber Optics technology
A line of products exploiting the advantages of fiber optics in military and professional applications
Fiber Optics transmission system
A transmission system consisting of plug-in cards capable of multiplexing audio and data signals over fiber optics transmission lines.
The standard card is capable of multiplexing 2 audio inputs (300Hz to 3000Hz), 8 opto-isolated digital inputs, 4 serial RS-232 signals,
2 serial RS-422 signals into a fiber optics line on transmission and demultiplexing
the same number of audio and data outputs from a fiber optics line on reception, implementing a complete Full-Duplex link over two optical fiber lines, one for Tx and one for Rx Based on the 100x200 Eurocard echnique, the standard card can be
mounted in a 19” standard rack. All the audio and data connections are available on a rear-mounted Eurocard connectors, the terminations of the optical fiber lines are located on the aluminum front plate.
The optical fiber terminations are ST type. The audio signals are 600 Ohm-balanced, transformer-isolated and sampled by a PCM codec.
The digital inputs and outputs can be configured in different standards: open collector/+12V/E&M.
The serial lines can operate at data rates up to 9600bps since the sampling interval is 30microseconds and consequently the jitter can never exceed this value.
The system is self-synchronized and each card is fitted with a synchronization led and a BITE led located on the front plate of the card, the complete system includes a series of ancillaries pertaining to the selected transmission configuration ,
listed here below:
19” standard rack 3U 84 TE complete with 2 power supplies (one operating, one as
back up), with capacity for 8 fiber optics cards
19” standard rack 3U 42 TE complete with power supply, with capacity for 3
fiber optics cards
Technical characteristics
Operating temperature |
0°C to 70°C |
Primary power voltage |
220Vac |
Operating voltage applied to the
optical fiber cards |
±12Vdc |
Audio inputs/outputs isolation |
100Vac/dc |
Audio input/output impedance |
600Ohm balanced |
Audio input level |
+8dBm/600 Ohm max |
Audio dynamic range |
35dB |
In/out insertion loss |
0dB |
Audio sampling rate |
8KHz |
Digital sampling interval |
30µs |
Digital inputs |
8 opto-isolated, configurable |
Audio inputs |
2 balanced |
Serial inputs |
4 RS-232, 2 RS-422 |
Digital outputs |
8 isolated configurable |
Audio outputs |
2 balanced |
Serial outputs |
4 RS-232, 2 RS-422, |
Optical
fiber connector type |
ST |
Transfer rate |
2Mbit/sec |
Input/output data connectors (each card) |
2 sub D 25 pins |
Input/output audio connectors (each card) |
2 sub D 9 pins |
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