Frequently Asked Questions

Confidentiality 

We understand that your ideas are valuable and we will treat anything you tell us with the strictest confidence. With that said, we are also happy to sign a non-disclosure agreement at any stage in the process.

Can you provide a NDA?

Yes, we can provide a NDA for you if you do not have one. It is in our mutual interest that you are comfortable discussing your ideas and project with us so that we can best advise and help you. If you would like to look over a sample NDA and learn more about what type of NDA is best for you the GOV.UK site provides further free information on non-discloser agreements.

Where are your clients?

Most of our clients are based in the UK, but we love to work with companies from further afield as well.

For the UK we can travel to meet you in London, Watford, Stevenage, Milton Keynes, Luton or elsewhere in Hertfordshire. Our work is primarily done remotely and meetings can often be held over the phone or via Skype.

Do you work with clients in the USA, Australia and other countries?

Yes, we can provide our design consulting and embedded software services to you no matter where you are based and often work with companies in North America. In some cases the work we perform for you will be subject regulations that are local to your country or region. If you are outside the EU we will work with you individually to meet compliance and other regulatory obligations on a case-by-case basis.

Payment

What payment options are available?

Most clients pay by bank transfer. At this time we can accept online payments by Visa, Mastercard, and American Express. A small fee may be added if you pay by credit card. 

We are an EU business and registered for VAT. Can  pay you without paying UK VAT?

Yes! For EU businesses that are registered for VAT in their home country we can process  your invoice without applying UK VAT. Please email or call with your EU VAT number.  

 

Technical

How far does SDI video go?

SDI video signals degrade as the length of a coaxial cable increases, especially at higher video resolutions. Typical maximum distances with high quality cable are:

SD-SDI:         300m

HD-SDI:         240m

3G-SDI:         180m

6G-SDI:          90m

12G-SDI:        70m 

Using lower quality cable, connectors, joins and patch panels will significantly reduce the achievable range. 

What is the best way to extend my SDI signal?

The range of an SDI signal can be doubled by inserting a good quality SDI reclocking distribution amp in the middle of the cable run. The DA includes an equalizer, which compensates for high frequency cable losses, and a reclocker which regenerates a clean video clock signal to remove jitter from the video signal.

For longer distances, media converters can be used to convert to optical fiber cables. The SDI signal can then be transported up to 10km or more without any loss of quality. 

How can I send SDI video over very long distances?

For longer distances the SDI signal can be transmitted over optical fiber. A small SDI to optical fiber converter is used to convert from electrical to optical format without altering the video information in any way, so pristine video quality is maintained. The optical signal can be sent over several km with no loss of quality. At the other end of the fiber optic cable another media converter is used to convert back to coaxial cable.

How can I extend a DVB-ASI signal?

DVB-ASI uses the same physical layer transport as SD-SDI, a 270Mb/s serial digital signal over coaxial cable, and can therefore be distributed and extended using good quality SDI equiment. 

However, unlike SDI, DVB-ASI is sensitive to the polarity of the signal. Some equipment from other manufacturers inverts the signal on some or all of their outputs making them unsuitable for ASI. All Ripcord Designs distribution amplifiers and fiber converters use noninverting outputs and are perfect for extending or distributing DVB-ASI signals.

How can I split an SDI signal into multiple devices?

The best way to drive multiple devices from a single SDI video signal is to use a distribution amplifier, or DA for short. A DA takes a single video input and creates multiple copies on its outputs. They are commonly used to distribute video signals around a studio, drive monitor walls, split a video signal into a monitor and recorder and many other applications.

A good quality DA will include a cable equalizer to compensate for cable losses at the input, and a reclocker to regenerate the video clock and remove jitter. Together these functions create perfect, jitter free copies of the original video with nice clean eye patterns.