7700 MultiFrame Manual
7721AE4-(B)-HD HDTV 4 Channel AES Audio Embedder
Revision
1.5
Page-7
4. STATUS
LEDS
The location of the status LEDs is shown in Figure 6-1.
4.1.
MODULE STATUS LEDS
MODULE OK:
This Green LED will be On when the module is operating properly. Depending on
the Status LED mode chosen, the LED will be On solid when input video or audio, or
both video and audio, is present (please refer to section 5.6).
LOCAL FAULT:
This Red LED makes it easy to identify one module in a frame that is missing an
essential input or has another fault.
The LED will blink On and Off if the microprocessor is not running.
Depending on the Status LED mode chosen, the LED will be on solid when input
video or audio is missing from all AES inputs, or both video and audio are missing.
In addition, this LED will be On when there is a fault in the module power supply.
VIDEO PRESENT:
This Green LED will be On when there is a valid video signal present at the module
input.
AUDIO PRESENT:
This Green LED will be On solid when there is a valid AES audio signal present at
any of the AES inputs.
ERROR:
This Yellow LED will be On when there are errors in the embedding process (for
example, FIFO underflow).
4.2.
AUDIO GROUP AND MODE STATUS LEDS
Four LEDs located on the lower end of the module (opposite the DIP switch) indicate the status of the
audio groups when the DIP switches are all set to the OFF condition. LED 1 is located closest to the
center of the module. When the DIP switches are set to other values, these LEDS are used to indicate
various operational modes of the module (please refer to Table 4-1).
