Black Box AC1020A, AC1021A-REC, AC1021A-XMIT, RGBHV Video with Stereo Audio Fiber Optic Transmission System Indicator LEDs:

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AC1020A/AC1021A-XMIT/ AC1021A-REC
INsTaLLaTION
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Indicator LEDs:
The transmitter and receiver units in the A1020A system each have three integral in-
dicator LEDs that are used to monitor the state of the unit. Their status is as follows:
TRANSMITTER and RECEIVER:
Power: (Green) Indicates that correct power has been applied.
TRANSMITTER:
Video: OFF: Indicates no video detected on the input.
BLINKING GREEN: Indicates either H or V sync detected at the input
but not on both.
STEADY GREEN: Indicates both H and V sync detected on the input.
Audio: OFF: Indicates no audio detected on the transmitter unit.
BLINKING: Indicates audio detected on the transmitter unit.
Audio: OFF: Indicates no audio detected over ber and, as a result, no active
audio detected by the receiver unit.
BLINKING: Indicates audio detected over fiber and, as a result,
active audio detected by the receiver unit.
RECEIVER:
Video: OFF: Indicates no video detected over ber and, as a result, no
video present on output.
BLINKING GREEN: Indicates either H or V sync detected over the
ber but not both.
STEADY GREEN: Indicates both H and V sync detected over the ber
and, as a result, video present on the output.