VAC-23SHU3 Manual
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My computer says, “the USB device is not recognized” or “the device does not support the
required parameters”.
First, be sure to use the USB cable that was supplied with the VAC-23SHU3. If it becomes lost
or damaged, please replace it with a “USB 3.0 type A-to-B” cable which provides the power and
bandwidth necessary for proper operation of the unit. When in doubt, try another cable.
Next, a message similar to the one above can also occur when the VAC-23SHU3 is connected to a
USB 2.0 connector. This can be fixed by plugging into a USB 3.0 port on the host computer. USB
3.0 connections are usually identified by blue color inside the connector.
If only a USB 2.0 connection is available, lowering the source video format usually works. 720p
is a good choice.
The video source is 1080p50 (or 60) but the computer says the incoming video is different (760p
for example). Why isn’t it the same as the source?
The VAC-23SHU3 is compatible with the USB industry standard UVC control protocol. This allows
the host computer to adjust the format and frame rate independently from the incoming source.
Many applications have controls that allow changing these parameters. Video conferencing
applications typically do not have these controls and simply force the settings that work best.
Please consult the instructions that are provided with the application for more information.
The VAC-12HU3 HDMI output is connected to a video recorder. The recorder is getting is a
blank picture.
OR……….
The HDMI output is connected to a video monitor and the picture is perfect, but the picture on
the computer is black with the message “Input: HDCP Content”. Can this be fixed?
HDMI video contains a “copy protection” system called HDCP “High Bandwidth Digital Content
Protection”. The principle behind HDCP is that copyrighted content should be seen and heard
but not recorded or transmitted. What this boils down to is that material containing HDCP “flag”
will be visible only on display devices, in other words, monitors, projectors and television sets. A
common difficulty is that DVD players, Blue Ray players and set top boxes (cable and satellite)
normally force HDCP on even when the material being played is not copyrighted. Video cameras,
on the other hand, never use HDCP. Computer outputs may or may not use HDCP depending on
the material being output. For details on HDCP, please visit www.hdmi.org.
Note: SDI inputs do not have content protection.
I’m trying to use VLC to test the VAC-23SHU3 but the picture looks wrong and the video format
is incorrect as well.
To connect with VLC, follow these steps:
1. Select the MEDIA tab then select OPEN CAPTURE DEVICE
2. In the Window that appears, select MEI USB 3.0 CAPTURE DEVICE for the Video Device Name
and Audio Device Name then click on ADVANCED OPTIONS.
3. In the next window, change Aspect Ratio to 16:9
4. If you are connected using USB 3.0, type YUY2 for Video Input Chroma Format.
If you are connected using USB 2.0 type MJPG for Video Input Chroma Format.
Now click OK. The window will close.
5. Click Play at the bottom of the remaining window. The incoming video and audio will appear.
9. Tips and Fixes
The USB audio is not clear.
This may occur when the input audio sampling rate does not match the USB audio sampling rate of
44.1 KHz.
Window 10 allows changing the default sample rate for incoming audio devices. Changing this rate
can resolve many issues with buzzes, warbles, etc.
Follow these steps:
• Click on the Windows Icon on the lower left corner of the desktop
• Select the “gear” icon at the left edge of the window
• Click on System (upper left corner)
• Click on Sound (left column)
• Below Input heading, check that the MEI audio device has been selected
• Below that item, click on Device Properties
• In the upper right corner, click on Additional Device Properties
• The Microphone Properties pop up window will appear
• Click on the Advanced tab
• In the pulldown window, see the current audio format and sample rate. Select the one not
currently in use.
• - 2 Channel, 16-bit, 441000 Hz
• - 2 Channel, 16-bit, 48000 Hz
• Click Apply and Click OK.
• It will likely be necessary to reselect the audio device in the application.
• Confirm that the sound has improved.
