MARMITEK Connect AH31 User Manual


1. Safety warnings

  • To prevent short circuits, this product should only be used inside and only in dry spaces. Do not expose the components to rain or moisture. Do not use the product close to a bath, swimming pool, etc.
  • Do not expose the components of your systems to extremely high temperatures or bright light sources.
  • In case of improper usage or if you have altered and repaired the product yourself, all guarantees expire. Marmitek does not accept responsibility in the case of improper usage of the product or when the product is used for purposes other than specified. Marmitek does not accept responsibility for additional damage other than covered by the legal product responsibility.
  • This product is not a toy. Keep out of reach of children.
  • Do not open the product: the device may contain live parts.The product should only be repaired or serviced by a qualified expert.
  • Only connect the adapter to the mains after checking whether the mains voltage is the same as the values on the identification tags. Never connect an adapter or power cord when it is damaged. In that case, contact your supplier.

2. Introduction

Congratulations on your purchase of the Marmitek Connect AH31TM! This device allows you to convert a composite signal with stereo audio to an HDMI signal. This is ideal when you want to connect a video source with a SCART or RCA output to an HDTV or projector with an HDMI input. Examples of such video sources are a DVD player, video recorder, or security camera. Marmitek products are manufactured with the utmost care and are exceptionally high quality. Please read this manual carefully and follow the instructions in order to get the best from this product.

3. Set content

1 x AV to HDMI converter1 x RCA cable1 x SCART adapter1 x USB power cable1 x USB power adapter1 x User Manual

4. Benefits

  • Connect a video source (DVD player, video recorder, security camera, etc.) with a SCART or RCA output to an HDTV or projector with an HDMI input
  • Convert an AV signal (composite and stereo audio) to an HDMI signal (720p/1080p)
  • No software installation required, making it quick and easy to use
  • With built-in 720p/1080p selector switch

5. Installation

  • Before installation: Turn off all devices (HDTV and video source) beforeconnecting them to the Connect AH31TM. If a device cannot be turned off, please remove the plug from the socket.
  • Only use High-Speed HDMI® certified cables for the best picture and sound quality. Using too much force to connect or disconnect the HDMI cables may damage them.

  1. Use the supplied RCA cable to connect the video source (such as a DVD player, video recorder, or security camera) to the input marked “Video L – Audio – R”. If desired, use the SCART adapter and set its built-in selector switch to “OUT” (output).
  2. Use an HDMI cable to connect the HDTV or projector to the HDMI port marked “HDMI”.
  3. Set the built-in selector switch to the desired output resolution, 720p or 1080p.
  4. Use the USB power cable to connect the power adapter to the “USB power” connector and insert the plug into the wall socket.

6. Frequently asked questions

No (or poor) image and sound If you experience a poor picture or no picture after connecting the HDMI converter, please try to identify the problem by connecting the video source directly to a screen (TV or projector). This allows you to determine whether the problem is with the video source, the RCA cable, the HDMI converter, or the screen.

  • Make sure the power adapter is connected and plugged in.
  • For the best picture and sound quality, only use High-Speed HDMI® certified cables.
  • Do not use HDMI cables longer than those specified in the technical data.
  • Check the HDMI and RCA cables and/or connectors for damage.

Any questions that are not answered here? Please visit

7. Technical data

ConnectionsAV input – 3 x RCA (video, L/R audio)HDMI output – 1 x HDMI (19-pin female)HDMI cable length –   max. 15 meters

VideoVideo systems –  PAL and NTSCHDMI output resolutions – 720p/60Hz and 1080p/60Hz

AudioAudio input – Stereo

HousingDimensions (D x W x H) – 66 x 55 x 20mmWeight –  40g

EnvironmentAmbient temperature – +0 to +70° CAmbient humidity –  10% to 85%

Power supplyExternal power adapter input – 100-240VAC @ 50/60HzOutput –   5VDC / 1A

Specifications may change without prior notice.

8. Declaration of Conformity

Hereby, Marmitek BV declares that this Connect AH31TM is in compliance with the essential requirements and other relevant provisions of the following Directives:

Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonization of the laws of the Member States relating to electromagnetic compatibility (recast)

Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonization of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits.

Directive (EU) 2017/2102 of the European Parliament and of the Council of 15 November 2017 amending Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

Commission Regulation (EU) 2019/1782 of 1 October 2019 laying down Ecodesign requirements for external power supplies pursuant to Directive 2009/125/EC of the European Parliament and of the Council and repealing Commission Regulation (EC) No 278/2009.

You can read the full Declaration of Conformity at


9. Copyrights

Marmitek is a trademark of Germatron B.V. Connect AH31TM is a trademark of Marmitek B.V. All rights reserved. Every effort has been made to ensure that the information in this manual is accurate. Marmitek is not responsible for printing or clerical errors. Copyright and all other proprietary rights in the content (including but not limited to model numbers, software, audio, video, text, and photographs) rests with Marmitek B.V. Any use of the Content, but without limitation, distribution, reproduction, modification, display or transmission without the prior written consent of Marmitek is strictly prohibited. All copyright and other proprietary notices shall be retained on all reproductions. Other company and product names mentioned herein may be trademarks of their respective companies. Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a recommendation. Marmitek assumes no responsibility with regard to the performance or use of these products.

10. Recycling

Environmental Information for Customers in the European Union and other European countries with separate collection systems. This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead, it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. It is your responsibility to dispose of this and other electric and electronic equipment via designated collection facilities appointed by the government or local authorities. Correct disposal and recycling will help prevent potential negative consequences to the environment and human health. For more detailed information about the disposal of your old equipment, please contact your local authorities, waste disposal service, or the shop where you purchased the product.


20644/20200126 | Connect AH31™all rights reserved © MARMITEK

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