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DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Pro satellite meters
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<blockquote data-quote="vma" data-source="post: 1022137" data-attributes="member: 256592"><p>Hi,</p><p></p><p>I have several professional TV field meter, including the Rover Instruments HD Touch, Deviser S7000 and S7200, Spaun Sparos 609 and 711, KWS Varos 109, etc.</p><p></p><p>The first question would be: do you want to purchase such a device for professional or amateur use?</p><p></p><p>If it is for professional use, you should consult the TV providers you most likely will end up working for. They often specify which device you need to use, in order to provide site measurements which are calibrated against everyone elses devices.</p><p></p><p>For amateur use, you must decide if it is about a one time antenna alignment or some heavy duty amateur usage, like feed hunting, antenna tuning, etc.</p><p></p><p>As an amateur I value the spectrum the most. I actually do so up to an extend, where I purchased a Siglent SSA3021X spectrum analyser and got myself a Rohde & Schwarz CRTU Universal Protocol Tester, which happens to feature a pretty good spectrum analyser for the price.</p><p></p><p>The spectrum analyser allows you to "see" what is happening on ALL frequencies at glance and in real time (if the equipment is good and the spectrum refresh rate is fast). This allows you do spot a satellite much before any tuner can actually lock the signal and tell you that you are tuning a transponder.</p><p></p><p>Also, you will be able to see feeds as they tend to show up on unusual frequencies with a narrow bandwidth, compared to regular transponders. You see that IMMEDIATLY, while otherwise it would take you minutes on a fast blind scan receiver.</p><p></p><p>Finally, all the measurments that a professional TV field meter offers, is meant to deal with strange issues. Of course, the plain 5 Euro signal strength meter will show you that there is a signal, but how do you figure out a intermittent issue with just a few transponders? How to you maximize the reception of a hard to capture satellite? Bear in mind, too, that signal strength is not the only parameter to look out for. While the constellation diagram on QPSK modulated satellite signals may have a less important role, it does allow you to minimize MER and BER issues, independantly of the signal strength.</p><p></p><p>The more information you stuck into teh modulated signal, like in 8PSK or QAM256, the more important it is to look at the constellation diagram.</p><p></p><p>With DVB-T/T2 you may want to use the ECHO measurement, which shows issues due to different antennas transmitting the same signal at the same frequency (SFN) from different distances. This can be a problem if the ECHO is out of the Guard Interval.</p><p></p><p>These are just a few quick examples.</p><p></p><p>Another reason for an amateur to get a professional meter, is the opportunity to actually learn about all this technology. I always say that a professional equipment can end up costing less than a professional training course.</p><p></p><p>Regarding the purchase of second hand devices:</p><p></p><p>1) I always recommend looking out for the Emitor Satlook Digital NIT. It is sold on eBay occasionally at ridiculous low prices (<100 Euro) and it does feature an amazing realtime spectrum and a constellation diagram.</p><p>2) Go for the Emitor Satlook Color or Color HD and get yourself a colour TFT and MPEG2 demodulator</p><p>3) Look for modernish Rover Instruments field meter. Easy rule of thumb: look out for colour screens!</p><p>4) Avoid Unaohm - they are fairly old. even the ones with a DVB logo: no MPEG demodulator, normally no constellation diagram, either. New ones are overpriced.</p><p>5) KWS Varos 109: saw one being sold for 500 Euro recently</p><p>6) Promax Prodig 5/TV Explorer - I think they are overpriced in the second hand market</p><p>7) Watch out for any second hand device capable of DVB-S2 and with MPEG2/4 demodulator from Rover, Promax, Deviser, Spaun, Sefram (Spaun is an OEM of Sefram), KWS: this means it is a newish model, but prices should be normally in excess of 1000 Euro (some may reach a LOT more)</p><p></p><p>New devices I recommend:</p><p></p><p>1) Prime Digital - OEM of Rover Instruments, some are pretty complete at great prices</p><p>2) Deviser S7000 and S7200 - amazing devices, but take care: not all options are activated and cost money</p><p></p><p>Regards,</p><p>Vitor</p></blockquote><p></p>
[QUOTE="vma, post: 1022137, member: 256592"] Hi, I have several professional TV field meter, including the Rover Instruments HD Touch, Deviser S7000 and S7200, Spaun Sparos 609 and 711, KWS Varos 109, etc. The first question would be: do you want to purchase such a device for professional or amateur use? If it is for professional use, you should consult the TV providers you most likely will end up working for. They often specify which device you need to use, in order to provide site measurements which are calibrated against everyone elses devices. For amateur use, you must decide if it is about a one time antenna alignment or some heavy duty amateur usage, like feed hunting, antenna tuning, etc. As an amateur I value the spectrum the most. I actually do so up to an extend, where I purchased a Siglent SSA3021X spectrum analyser and got myself a Rohde & Schwarz CRTU Universal Protocol Tester, which happens to feature a pretty good spectrum analyser for the price. The spectrum analyser allows you to "see" what is happening on ALL frequencies at glance and in real time (if the equipment is good and the spectrum refresh rate is fast). This allows you do spot a satellite much before any tuner can actually lock the signal and tell you that you are tuning a transponder. Also, you will be able to see feeds as they tend to show up on unusual frequencies with a narrow bandwidth, compared to regular transponders. You see that IMMEDIATLY, while otherwise it would take you minutes on a fast blind scan receiver. Finally, all the measurments that a professional TV field meter offers, is meant to deal with strange issues. Of course, the plain 5 Euro signal strength meter will show you that there is a signal, but how do you figure out a intermittent issue with just a few transponders? How to you maximize the reception of a hard to capture satellite? Bear in mind, too, that signal strength is not the only parameter to look out for. While the constellation diagram on QPSK modulated satellite signals may have a less important role, it does allow you to minimize MER and BER issues, independantly of the signal strength. The more information you stuck into teh modulated signal, like in 8PSK or QAM256, the more important it is to look at the constellation diagram. With DVB-T/T2 you may want to use the ECHO measurement, which shows issues due to different antennas transmitting the same signal at the same frequency (SFN) from different distances. This can be a problem if the ECHO is out of the Guard Interval. These are just a few quick examples. Another reason for an amateur to get a professional meter, is the opportunity to actually learn about all this technology. I always say that a professional equipment can end up costing less than a professional training course. Regarding the purchase of second hand devices: 1) I always recommend looking out for the Emitor Satlook Digital NIT. It is sold on eBay occasionally at ridiculous low prices (<100 Euro) and it does feature an amazing realtime spectrum and a constellation diagram. 2) Go for the Emitor Satlook Color or Color HD and get yourself a colour TFT and MPEG2 demodulator 3) Look for modernish Rover Instruments field meter. Easy rule of thumb: look out for colour screens! 4) Avoid Unaohm - they are fairly old. even the ones with a DVB logo: no MPEG demodulator, normally no constellation diagram, either. New ones are overpriced. 5) KWS Varos 109: saw one being sold for 500 Euro recently 6) Promax Prodig 5/TV Explorer - I think they are overpriced in the second hand market 7) Watch out for any second hand device capable of DVB-S2 and with MPEG2/4 demodulator from Rover, Promax, Deviser, Spaun, Sefram (Spaun is an OEM of Sefram), KWS: this means it is a newish model, but prices should be normally in excess of 1000 Euro (some may reach a LOT more) New devices I recommend: 1) Prime Digital - OEM of Rover Instruments, some are pretty complete at great prices 2) Deviser S7000 and S7200 - amazing devices, but take care: not all options are activated and cost money Regards, Vitor [/QUOTE]
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