AV Unit


Existing customer can use these pages to raise tickets and correspond regarding warranty and maintenance contract support issues.

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Pen doesn’t work in SMART Notebook when using interactive whiteboard screen

When using SMART Notebook with your interactive screen the touch screen works OK but the pen in SMART Notebook doesn’t write.  Instead a cursor marquee appears.

This is caused by the  “flicks” feature being turned on in the Windows 7 operating system.  To resolve this, turn off the “flicks” feature by following these steps.

  1. Close SmartNotebook
  2. Select Start > Control Panel > Pen and Touch
  3. The Pen and Touch screen opens
  4. Clear the Use flicks to perform common actions quickly and easily check box on the Flicks tab
  5. Press OK
  6. Restart Smart Notebook

How should I look after my tie-clip radio microphone?

Tie clip (lavalier) radio microphones are delicate pieces of equipment and require looking after.  By the nature of their use they tend to be passed around, threaded through clothing, shoved in pockets, forgotten about and all sorts of other things that can easily result in damage.  Following these steps will help ensure that the radio microphone is maintained in good condition and ready for use.

  1. Collect the radio microphone as soon as possible after use and check that all the components are complete.
  2. The clip that attaches the microphone to clothing is usually detachable and easily lost. Check it is still attached prior to storage.
  3. Use good quality alkaline batteries. Check the battery monitor before use and replace batteries regularly. The small cost of batteries is nothing compared to the embarrassment and disruption caused by batteries running out mid-session.
  4. When fitting the radio microphone, carefully disconnect the mic cable from the transmitter pack and thread the connector through clothing before reconnecting.  Gently coil excess cable and place in a pocket. Avoid hanging loops of cable that can get snagged on furniture or other obstructions.
  5. Clip the radio mic transmitter pack onto a belt or an inside jacket pocket. Avoid putting in a trouser pocket as it can be crushed and the cable damaged when the user sits down.
  6. Do not wrap excess cable around the radio mic transmitter.
  7. The point where the cable enters the connector gets flexed and compressed the most. Take care not to pull the cable too tight or put stress on this area.
  8. If the radio mic transmitter pack has a long flexible antenna, do not coil the antenna cable or wrap it around the transmitter body as this can adversely affect performance.
  9. When storing the microphone carefully coil the microphone cable into a loose coil. Fix with a twist-tie or use the un-serrated part of the mic clip to keep the coil in place.
  10. Remove batteries if storing the mic pack for a long period of time .



Can I operate radio microphones without a licence?

Licence Exempt Frequencies

In the UK radio microphones can be used in the channel 70 UHF band (863-865MHz) without the need for a licence providing that the equipment complies with the requirements set out in The Wireless Telegraphy (Exemption) (Amendment) Regulations 2006

Similarly, the VHF band of 173.8 – 175 MHz can also be used without a licence.

The WIFI band (2400 – 2483.5MHz) is also available for use without a licence.

When using these deregulated frequencies users should be aware that there is no guarantee of protection from possible interference sources.

Typically, four frequencies can be used in each of the above VHF and UHF bands at a time. The number of simultaneous frequencies available in the wifi band is far greater.

Licenced Frequencies

Channel 38 (606 – 614 MHz) shared frequencies can be used anywhere in the UK with a license obtained from Ofcom. The licence can also cover anyone hiring from the licensee. Frequencies on this licence are provided on a non-protected basis as they could be shared with other users in the local area. Ofcom PMSE team does not coordinate the use of these frequencies.

Multi-touch functionality isn’t working correctly

First, try opening Microsoft Paint and drag two fingers across the drawing area. If this produces two lines your multi-touch functionality is working correctly.

If you still cannot get more than one touch point to register please check to make sure that your gesture control is turned on and that there are no other settings within your operating system preventing there from being multiple touch points when using a touch screen.

Note that multi-touch was not included by default with Window 7 however, the multi-touch pack can be downloaded and added.

In Windows 8 onwards search for ‘Pen and Touch’ in the control panel.  Ensure that the box for ‘enable multi-touch gestures and inking’ is ticked.

Note that currently Apple OSX doesn’t have any native support for multi-touch devices.

The video signal from my PC will not display on my BVS touch screen

Check that you have the correct input source selected;

  • If you are using the HDMI port on the FRONT of the screen you must press the “Input” button on the remote control and select the source “HDMI (front)”.
  • If you are connecting the PC via VGA cable make sure you have selected the VGA input from the remote control.

If you have connected a VGA cable to a laptop the external monitor port may not be turned on by default.  There is normally a ‘hotkey’ to do this and requires you to press ‘Fn’ and the corresponding function (F) key together.  This is normally indicated by a monitor icon on the top row of the keyboard.

When using a laptop the multiple monitor settings should be set to ‘clone’ or ‘duplicate display’ so that both screens display the same image and the touch response functions correctly.

  • In Windows the display settings can be accessed from the Control Panel or by right-clicking on the desktop and selecting ‘Display settings’
  • In Windows 10 you can access the display settings by pressing Windows key + P. Select ‘Duplicate’.

My BVS touch screen isn’t playing any sound

If you are using a VGA cable between your PC and your touch screen you must also use a 3.5mm male to male audio jack cable to carry the audio signal.

If you are using a HDMI cable the digital audio signal is embedded within the HDMI and so there is no need to use an audio jack cable.

Check that the cables are securely fitted at either end to the appropriate connectors

Ensure you volume is turned up and and that the screen is not muted.

Check that the volume is turned up on the PC or source device.

Ensure that your “Surround Sound” setting is set to “Surround”. To do this press the “Menu” button on remote control, then press the right navigation button, and go to the “Sound” sub menu. Change the “Auto Volume” to “ON” if it isn’t already and change the “Surround Sound” to “Surround” (please do not select the “SRS TruSurround XT” option).


Problems using a Mac OS with touchscreen

Each new version of Apple’s operating system has different restrictions in place to try and prevent compatibility with third party touch screens. Often, when restrictions are introduced via updates to the OS, new versions of the hardware’s firmware or updates to the software that you are using are required to combat the issues.  If you are running your touchscreen from a Mac following an operating system update you may experience issues with the touch functionality such as incorrect calibration or the touch function not working in certain areas. We recommend downgrading your operating system to OS X Yosemite 10.10 or any version of OS X Mavericks.

Radio microphone not working

Troubleshooting a radio microphone system.

  1. check both the radio microphone transmitter and the receiver unit are turned on
  2. check batteries in handheld transmitter are good and replace with fresh batteries if required.
  3. check that the frequency or channel on the microphone transmitter corresponds with that on the radio microphone receiver. If the frequency or channel is different, retune the microphone or receiver so that they correspond.
  4. ensure that no other microphone system nearby is using this frequency/channel.  It may be that a system in a different room is using the channel so be aware of what else is being used in the vicinity.
  5. whilst speaking into the microphone, check that audio is being received at the mic receiver. This is normally indicated by a digital VU meter or LED array. If audio level is present at the receiver this would indicate that the microphone is working correctly and the problem may lie elsewhere within the PA system.

Typical hand held radio mic receiver and transmitter. The receiver has meters on the left of the display that show RF radio strength and audio level.