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Forum Index : Microcontroller and PC projects : Digital TV signal meter for field work...
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9066 |
Hi folks.  I am looing to buy a meter to replace my old Salter alalog TV meter for field work. Now that NZ is totally digital, I only ever used the old Salter when I needed to check the levels of an analog head-end such as hotels and rest-homes. This is pretty much ALL gone now, and the only one I used it for was a local retirement village that still ran an analog headend from a bank of satellite decoders. This was blown to bits in last years lightning strike, and the replacement system was entirely digital, as you would expect with a new headend these days. The upshot of which is that the old analog meter is now totally useless!  So, I have been looking at various meters I can use as a replacment. It needs to be able to do BOTH DVB-S(Satellite) and DVB-T(Teresstial - aerial). I found this meter on AliExpress, but my concern is with the DVB-T decoding. DVB-S should be no problem, but here in NZ, the Government elected to use DVB-T with the ODFM standard. My concern is that if I buy a meter like the one listed above, it might not be able to decode our DVB-T terrestrial Freeview TV signal, in which case, the unit would be an expensive paperweight. Can anyone here who is perhaps in the know more then I as to the different digital TV standards, give me any advise or pointers? The unit linked to above supports 16QAM, 64QAM and 256QAM demod, and all the DVB-T transmitter sites around NZ are either 64QAM or 256QAM, so THOSE specs jive with the meter, but does that mean the meter can decode ODFM standard? I will message the seller to see if they can answer, if no-one here understands the gobble-de-gook either!  Smoke makes things work. When the smoke gets out, it stops! |
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TassyJim Guru  Joined: 07/08/2011 Location: AustraliaPosts: 5911 |
You might get more info from http://www.sat-link.com.au/satlink/ws-6980.htm I have had a WS6902 for satellite use for 6 years and I do like it. I don't know enough about the standards used to answer your main question. Jim VK7JH MMedit MMBasic Help |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9066 |
Cheers for that link - I have sent an email to the Aussie website, and we'll see if they answer it. Any other comments still welcomed. Smoke makes things work. When the smoke gets out, it stops! |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1664 |
Hi Grog, I considered the cheaper models, but decided they fell short. Either no MPEG4, and some other omission from the next one that does do MPEG4. Considered the WS-6980's $500+ price test too much for my "needs", as I don't do TV installs, so essentially it would be a personal use toy. For my latest problem solving here at home, which was issues with a distributed HDMI modulator, I borrowed a college's Promax Ranger, which was out of my expertise league for this stuff. This one I think... Promax Ranger Over $6000 I believe he paid. Interesting thing was that when I showed him the spec's of the WS-6980 he was very impressed & mentioned he may get one a backup & go to first unit to lessen the constant use of the expensive unit. He's a "Signal Quality Junkie", & always maintains high end gear, so it was interesting the gave the WS-6980 a tick. Phil. Edit:- That's a good price on Aliexpress, almost considering it again. |
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