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Tips and Tricks Video 128

Tips and Tricks Video 128

When Power Cord matters (French and English document) Nothing is more simple than a power cord ! But it’s not completely true when security matters. As a matter of fact, for equipment that is so important that requires redundancy, this parameter has to be considered. And who has never unplug a power cord by mistake? Particularly when synch generators are concerned, all details are important.
TipsTricks

Tips and Tricks Video 148

UHD-4K SQD vs 2SI The Video industry is always trying to improve its level of quality. In this context, 4K UHD is now coming to our TV sets and the best example will be the next world cup in Russia in June that will be covered in 4K in all the stadiums and broadcasted to each country in its native format. 4K UHD requires 8 times more bandwidth than a regular HD signal. It means that 12Mbps are needed. If we remember the difficulties faced moving from SD-SDI (270Mbps) to HD-SDI (1,485Mbps), dealing with 12Gbps SDI could be considered as quite a challenge. Fortunately, for those now wanting to take any risk, some tips exist allowing well-known process, and a lot of broadcasters are using the 4 links 3Gbps technique. So, the signal is divided in 4 equal parts and transported on 4 different coaxial cables. Two modes exist for splitting the pixels, each of one with advantages and disadvantages.
PQube3-PQ-E08N

PQube3-PQ-E08N

PQ Disturbance & Energy Measurement-4 Voltage & 8 Current inputs
Understanding Power Testing for Today's automobiles

Understanding Power Testing for Today's automobiles

Testing New, High Power Semiconductor Devices, Components, and Modules
Tips and Tricks Video

Tips and Tricks Video 131

TS-DF measurement (Time Stamp Delay Factor) (French and English document) In our Broadcast industry, the advent of IP transport requires to adapt to new techniques and to become familiar with new indicators. The IP has a long life and measurement techniques too. However, new algorithms had to be developed in order to adapt to Broadcast. It is in this context appears now the TS-DF indicator that measures the jitter of a network and its cumulative effect over time.
Pqube2 T-H

PQube2

Power Quality Disturbance & Energy Monitoring.
Tips and Tricks Video 123

Tips and Tricks Video 123

DARS phase evaluation (French and English document) The DARS signal is sometimes created in another equipment than a SPG. In this case, it is necessary to check regularly the phase of this DARS compared to the video Sync of the system. As a matter of fact, these two signals must be synchronous and stable otherwise clicks and pops suddenly appear. But this is not easy to do so, since one signal is analog and the other is digital, and on top of that it’s necessary to compare the BB with the content of the AES signal and not with the clock ! The trick to do that is to use a traditional oscilloscope able to trigger on a user-defined pattern in a digital stream.
Tips and Tricks Video 124

Tips and Tricks Video 124

PTP – A new reference (French and English document) To deploy systems interconnected with IP links, the most difficult issue to solve is synchronization of all the equipment’s with a unique clock. With this in mind, an old standard has been adapted for Broadcast applications: PTP (Precision Time Protocol). Originally, this technology has been used by banks for High Frequency Trading operations in order that all computers in the world have a unique clock that is millisecond accurate. This protocol has now been adapted for Broadcast applications and is well described in the recommendation SMPTE ST 2059-2.
Tips and Tricks Video 126

Tips and Tricks Video 126

The HD-SDI CRC’s – What a story ! (French and English document) It is well known, that in HD-SDI, each line has its own dual CRC control packet in order to check separately the luminance and the chrominance of a signal. It is less known how it works really. This note is giving the basic knowledge in order to understand the process involved in this technology maintaining the integrity of the data in a digital path. At the same time, it will explain a bit more the interest of the data display available in oscilloscopes.

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