Tag: <span>夜上海论坛RL</span>

Remote Controlled Real Time Spectrum Analyzer from 0.8 to 8 GHz

first_imgNarda Safety Test Solutions, a leading provider of measuring equipment for the EMF Safety, RF Testing and EMC sectors, has introduced a remote-controlled version of the SignalShark real-time spectrum analyzer which provides a powerful and versatile means of carrying out radio monitoring for organisations such as regulatory authorities, mobile phone network operators, police and security services, intelligence agencies and the armed forces.Covering the frequency range 8 kHz to 8 GHz, the SignalShark 3320 Remote Unit is capable of detecting, analysing and classifying a wide range of signals, as well as locating the source of transmissions using either automatic direction finding or TDOA (time difference of arrival) techniques. The instrument uses advanced FFT computations to achieve a 40 MHz real-time instantaneous bandwidth with a 100% probability of intercept (POI) for signals longer than 3.125 µs, which means that there are no gaps in the frequency span and every signal event can be detected reliably, even if it is extremely brief and transient. The unit is also able to capture the spectrum over the full frequency span of 8 kHz to 8 GHz in a single measurement at the impressively fast scan rate of 50GHz/s.Featuring an integrated computer running Windows 10, the 3320 provides a very flexible GUI with four task modes to support a wide variety of measurement applications, namely scan mode, real-time spectrum mode, auto DF mode and real-time streaming mode. Measurements are visualised by means of different views. For example, the user can choose to display the frequency domain and channel level at the same time by selecting a spectrum view and a level meter view. One particularly useful feature is the persistence view in real-time spectrum mode, which makes it very easy to spot interfering signals even if they are only transmitted sporadically. The source of the interference can then be tracked down using dedicated SignalShark direction finding antennas. The 3320 unit is equipped with an excellent RF front-end delivering outstanding sensitivity and dynamic range. It also provides four switchable RF inputs, which allow several different antennas – covering different frequency bands, for example – to be connected at the same time without the need for a complex switch that conventional single-input analysers require for this purpose.Available in either stand-alone or 19in. rack-mount versions, the SignalShark 3320 is accessed with remote desktop software via a network and can also be operated locally by means of an external monitor, keyboard and mouse. Utilising the SCPI remote control protocol and VITA 49 compliant I/Q streaming, the unit will integrate easily into almost any software environment.last_img read more

Welsh underdogs revel in greatest night with Belgium win

first_imgEcstatic Wales coach Chris Coleman praised his “soldiers” after a shock 3-1 win over Belgium at Euro 2016 took the country to their first major tournament semi-final, and said they could match anyone if they were not afraid to fail.“I know my team are good enough to perform against anybody. We defended like soldiers, our performance was fantastic,” Coleman said. “The whole experience is unchartered.”The stunning victory against a side ranked second in the world was the greatest result in Welsh soccer history and will embolden the players when they meet Portugal next Wednesday to fight for a place in the final.“I think you dream about nights like this, and you never know whether you’ll be lucky enough to live them,” Coleman said.He added that he had been quietly confident Wales could spring an upset and they deserved the win.“I said before we kicked the ball today, we are not here to enjoy it, we are here to compete,” he said.“The big challenge is not the opposition it is ourselves. It’s not worrying about giving our best and failing.”Second-half goals from Hal Robson-Kanu and Sam Vokes sealed Wales’ triumph after captain Ashley Williams’ first-half header cancelled out an early strike from Radja Nainggolan.“We were underdogs to even qualify but knew the quality in our group,” said man-of the-match Robson-Kanu. “The performance today is a credit to everyone.“We kept to our game plan. We’ve got world-class players – we can be as solid as a rock defensively. With those two combined we stand a good chance.”SUPERB GOALRobson-Kanu’s superb goal came afer he left three Belgium players for dead with a ‘Cruyff’ turn and calmly stroke the ball home to put Wales 2-1 ahead in the 55th minute.Former England international Gary Lineker, in his role as a BBC presenter, called Wales’ victory “one of the greatest performances in the history of British football”.The Welsh fans, who had flocked across the Channel or made their way from other points in France, egged their team on from the start with a mighty choral display.Although this was almost a home game for the Belgians, whose border is five miles from Stadium Pierre-Mauroy in Lille, the only voices to be heard were Welsh, from “Land of my Fathers” to “Men of Harlech” and, their inevitable anthem of Euro 2016, “Please Don’t Send Me home”.On a sour note for Wales, though, they will be without inspirational midfielder Aaron Ramsey in their semi-final in Lyon on Wednesday after he picked up a booking that has ruled him out of the match.“I’m gutted for Aaron. He’s been one of the best players of the tournament,” Coleman said.The London Times special sports section had a full-page picture of Robson-Kanu celebrating his goal with the headline “Hal-lelujah”, while The Sun’s banner read: “Kanu believe it!Greatest ever win!”.Eight days after Britain voted to leave the European Union, Prime Minister David Cameron offered his congratulations to Wales for their Euro 2016 heroics.“Amazing performance, amazing result. Passion & pride shown by Wales team & fans are incredible to watch. Bring on Portugal!” Cameron said on Twitter.last_img read more

Arsenal and Leicester target Steven N’Zonzi made to train alone by Sevilla

first_imgArsenal and Leicester City are on red alert after Steven N’Zonzi was made to train alone by Sevilla.The former Stoke City midfielder has reportedly fallen out with head coach Eduardo Berizzo after the two clashed last week.The pair are said to have had a heated argument after N’Zonzi was subbed at half-time against Liverpool in the Champions League.And now, according to Diario AS, the Frenchman is being forced to train alone by Sevilla.That news will be of interest to both Arsenal and Leicester City, who have been linked with N’Zonzi in the past.The 28-year-old has also been linked with the likes of Barcelona and Juventus in the past too. 1 The midfielder has reportedly fallen out with head coach Eduardo Berizzo last_img read more