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Source Checkup
When diagnosing problems with an encoder or source, it is highly recommended that
a local monitor be connected to the VNC 200. If a monitor is not already connected as
part of the system, it is suggested that one be connected temporarily. See the following
flowchart.
Is the local monitor
completely blank?
START
YES
NO
Check the POWER indicator
on the VN-MATRIX Encoder...
UNLITLIT FLASHING
What’s the problem?
Check the STATUS indicator
on the Encoder...
UNLITLIT FLASHING
NO POWER
Check the PSU connection to the
VN-MATRIX.
Check for ‘green’ light on PSU.
Check mains cable, fuse and supply.
POWER/THERMAL FAULT
The unit has shut down due to either a
power supply fault or over temperature
condition.
Check for obstructed ventilation
grilles, excessive ambient
temperature.
Cycle the power off and on to reset
the unit.
If the problem recurs and ambient
temperature is within limits, try using
a different PSU.
NO SOURCE CONNECTED/DETECTED
Follow the Controller Checkup
section and follow the checks listed
for ‘No Source Detected’.
SOURCE IS BEING STREAMED TO
ONE OR MORE DECODERS
This proves that the Encoder is
working OK. If this source is not
being displayed on a particular
Decoder, check that you have not
exceeded the limit of 4 RTP unicast
streams.
SOURCE OK BUT NOT BEING
STREAMED
Follow the Controller Checkup
section and check that all devices
are online.
If you have not already done so, see
the Decoder Checkup.
Message Displayed…
“No Source Detected”
Source image is stable
but has a color cast
Source image is unstable
or corrupted
Source image is badly
framed (black bars at
edges or edges cropped).
Check for loose/incorrect connections or faulty cables between the source
and the Encoder.
Check that the source is actually providing an output signal (e.g. it may have
gone into a power/screen saver mode)
Check that the source type is supported and has been auto-detected
correctly. If not, try forcing the input to a manual source mode.
Check that an incompatible manual source mode has not been applied to
the input. If so, try setting the input to ‘auto’.
Check that the Encoder is not in ‘Standby’ mode.
Check for loose/incorrect connections or faulty cables between the source
and the Encoder.
Check that the source itself is actually stable.
Check that the source type is supported and has been auto-detected
correctly. If not, try forcing the input to a manual source mode.
Check that an incompatible manual source mode has not been applied to
the input. If so, try setting the input to ‘auto’.
Try adjusting the clock phase settings.
Check whether or not the source has Macrovision copy protection and set
the Macrovision Defeat option accordingly.
Check that the correct color space as been applied to the source.
Check for loose/incorrect connections or faulty cables between the source
and the Encoder.
Check that the original source itself is correctly framed.
Try adjusting the Blanking settings on the Encoder.
VN-Matrix 200 Series • System Configuration 42