Chapter 1.
Introduction
1.1
Overview
The FM4SDI transmitter and receiver kit by Thor is designed to extend the range of high definition HDSDI digital
video by transmitting the data over fiber cable. Four full HDSDI channels are transmitted over a single fiber with
no latency or added delay in the video with respect to timing. In addition to HDSDI video, the link also transports
a single channel of onedirectional RS485 control data from the receiver back to the transmitter. This is useful for
controlling equipment such as video switches or PTZ camera controllers. Link alarms are provided on both units
that indicate when there is a fiber fault or an optical link is not established. These units are suitable for all
applications involving HDSDI, SDSDI, or DVBASI broadcast type digital video. Optional upgrades for the
auxiliary include bidirectional RS232/422 data, bidirectional analog audio, or contact closure. Supported
options are indicated by model numbers.
1.2
Features
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Fully complies with the SMPTE292M HDSDI standard
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FM4SDITx: 4 HDSDI inputs on BNC
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FM4SDIRx: 4 HDSDI outputs on BNC
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Supports two embedded audio per SDI channel
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Serial Data RS485 (default) with options for RS242 or RS422 (Model Specific)
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Multiple options for auxiliary channel including audio, contact closure, RS232, or RS422
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Supports resolutions at 1080P@30,25,24 and 720P@60,50,30,25,24
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Output reclocking ensures clean digital output signal
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Surge protection circuit to prevent damage from static electricity or power surges
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Optical link alarm NOP (No optical signal) indicates link status from both units
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High quality external switching type power supply
1.3
Application
Figure131 Application for desktop enclosure
Thor Fiber 2014 TEL:18005218467 EMAIL: [email protected] http://www.thorbroadcast.com
