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Diagnostic Indicators | |
Introduction to Fibre Diagnostic Indicators
The Diagnostic Indicators
The Fibre Options links include three types of diagnostic indicators. These LEDs take the guesswork out of troubleshooting your system.
Video signal indicators monitor the presence of valid video signals. They are connected to the input or output of a video channel. When a valid signal is being received, these LEDs will glow green. If the incoming video drops below 40 IRE (standard sync level), they will turn red, suggesting that either a camera is off or inoperative, or that the coaxial cable from the camera to the module is defective.
Audio signal indicators monitor audio levels. These LEDs glow green for normal audio levels, but switch to red if the audio reaches the limit of the available headroom. Occasional red peaks are normal, but a steady red indicates a potential overload condition (clipping).
Level/LossTM indicators provide an indication of received optical power, or light level. They are found on both receivers and transceivers, including two-way systems. This LED will glow in varying intensities of green providing a subjective indication of the amount of optical power received. Any amount of green, from barely visible to bright, indicates that sufficient light is at the receiving end.
A red Level/Loss LED indicates optical power is not being received, suggesting that the fibre is damaged, disconnected, or that the attenuation in the overall fibre path is exceeding the maximum attenuation specified for the unit.
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