AIE Audio Insert/Extract Boards
182
Enova Digital Media Switchers - Hardware Reference Manual
NOTE:
If wiring the audio connectors to balanced audio input devices, see page 183 for options.
Wiring Audio Connectors
1.
Press a very small tip screwdriver (or a T-pin) into the square hole to release the tension clamp.
2.
Insert the wire into the round hole.
3.
Remove the screwdriver from the square hole so that the clamp places tension on the wire (FIG. 93):
NOTE:
Insert a T-pin in each of the 3 tension clamps on one side before inserting wires.
4.
Test/check the Insert/Extract functionality (see below).
Testing/Checking the Insert/Extract Functionality
Insertion
– If the DIP switch setting results in being inserted onto the corresponding video input or output signal, execute a
test switch using the video signal. See the
section on page 70 for details.
Extraction
– If the DIP switch setting results in audio being extracted from a video input or output signal, check the auxiliary
or supplemental audio equipment involved to be sure the audio signal is present where expected.
If the system does not handle the audio in the expected manner, see "AIE Board Troubleshooting" on page 182.
AIE Board Troubleshooting
Problem
- Audio is not present or is not at expected destination device.
Possible Solution #1
- Re-wire to a different connector:
To verify input and/or output connection, check the connector numbers on the AIE Boards. The AIE connector
numbers correspond directly to the numbers for the standard input or output connectors that they insert audio into
or extract audio from. AIE 1 works with standard Input 1, AIE 2 works with standard Input 2, etc.
Enova DGX 800 only - Depending on location, AIE Board connectors 1-8 correspond to standard input or output
connectors 1-8. Connectors 9-16 are inoperable.
Enova DGX 3200 only - Remember that the AIE Boards
will not
work with connectors 17-32, which are on the boards
in the last four input and last four output board slots.
Possible Solution #2
- Re-install board:
Verify that the AIE Board is seated correctly by repeating the re-installation procedure.
Test/check the insert/extract functionality again.
Problem
– Connecting to balanced audio input device results in extracted audio buzzing.
Solution
– Re-wire audio connections:
Wire the AIE connector as follows: AIE L to device L+; AIE R to device R+; AIE ground to device R-; and a jumper
from device R- to device L- (see FIG. 94 below).
Problem
– AIE extracted audio from an HDMI output drops out over time. Probably due to upstream unstable/garbage
video introduced onto the HDMI output port with no sink connected.
Solution
– Connect a sink to the HDMI output port:
Verify the cause by sending the DGX_SHELL commands:
power OFF EXPOUT
followed by
power ON EXPOUT
. If the
audio signal recovers, not having a sink connected to the HDMI output port was likely the cause.
Connect a sink with a valid EDID to the open HDMI output port. The sink can be something like an EDID emulator or
a monitor. Optionally, you can loop back the HDMI output port to an unused HDMI input port.
The problem is resolved when the audio no longer drops out.
FIG. 93
Audio wiring for AIE Board
DGX 3200
DGX 800/1600/6400
Tension clamp
Tension clamp
