Cause
Check
The loop-through
display is incompatible
with the input.
Connect the source directly to the display and check that an image is shown.
The VNE 250 does not
support the input signal
format.
The VNE 250 accepts VGA, DVI (with appropriate adapters), or HDMI signals. Other
video types are not recognized and cannot be streamed.
In the web UI, check the status of the
fields (see
page 47) to ensure the source is recognized by the VNE 250.
For a PC source, try selecting another fixed mode in the EDID list for that input (analog
or digital). Selecting a fixed mode with the same resolution and a 60 Hz refresh rate
can bring the source into range (see
For unsupported analog sources, it may be possible to construct a
(see page 80).
The HDCP Authorize
setting is incorrect.
Check to see if the source is HDCP encrypted.
When HDCP-encrypted content is transmitted to a non-HDCP compliant display, a
full-screen green signal is seen on the output screen. This mechanism is managed
by the VNM 250 device. However, under these circumstances, some Blu-ray players
output a blank, black image in place of content and this can be misleading.
Check the setting of the
Video input — HDCP authorization
control (see
page 48). For most HDMI sources the box must be checked. Try toggling between
checked and unchecked.
The wrong input is
selected.
The VNE 250 has digital (HDMI) and analog (VGA) connectors. The input can be forced
to a specific input type. Ensure that the correct video input is enabled (see
Decoder — Problems with Viewing the Decoded Image
This checklist helps to identify problems with viewing a stream on the decoder.
Cause
Check
Connecting cable is
faulty.
Check the cable connecting the VND 250 to the display to see if it is faulty.
TIP:
Extron recommends that HDMI cables are secured to VND 250 unit,
using a LockIt HDMI Cable Lacing Bracket.
The decoder is
disabled.
Check that the device mode is set to
enable
(see the decoder front panel
The display is unable
to support the output
signal format.
If the decoder output format is set to
auto
, try setting it to
monitor
. This forces the
Output Format to match the preferred mode of the display. Make sure the
Scale
The VND 250 does
not support the output
signal format.
If the decoder output format is set to
auto
, try setting it to
monitor
. This forces the
Output Format to match the preferred mode of the display. Make sure the
Scale
The display is not
HDCP compliant.
When HDCP-encrypted content is transmitted to a non-HDCP compliant display, a
full-screen green signal is seen on the output screen. This mechanism is managed by
the VNM 250 device.
NOTE:
Streams that are not HDCP-encrypted can be viewed on
non-compliant displays.
The HDCP mode check
box is set.
is enabled (see page 60), the display output signal is
HDCP-encrypted for all source (stream) types. If the decoder display is not HDCP
compliant, the a full green signal is shown at all times. The HDCP mode setting is used
to improve the clean switch performance when HDCP streams are used.
VNM 250 • Troubleshooting
120
Summary of Contents for VN-Matrix 250 Series
Page 6: ......
