Dvb-T Signal Meter
Posted 12 May 2013 - 08:23 PM
In The market for a DVB-T Meter when doing my installs as old one has seen better days.
I'd prefer Handheld so It's a Toss up between
- Emitor Digi-Air Pro - around $500
- Labgear DAT102 - About $700
- Unaohm T40 - Cant get much Info.
What do other Installers here reckon about these in Question.
Basically the main differences feature wise, the Digi Air only has 20-31 MER Range,
Where as Labgear has 14 to 35.
The Digi Air has a 12v Output for powering Amps, LabGear Does not.
Digi Air seems to have MultiChannel strength displays (5 Channel strengh bars on one screen) where LabGear does not.
Cant find much info on the Unaohm aswell as any Distributors in WA/Australia and not sure on Price to expect compared
to features it has compared to the DigiAir and LabGear.
Any Comments on these 3 Meters? DAT103 is apparently coming out does anybody know what added features it has
other than Power Output and if it will be available this month?
Posted 14 May 2013 - 04:57 AM
It would be a deal breaker for me if my prime installing instrument can not do this.
For me, this allows the quick locating of an antenna for further parameter observations, during the process of determining the best mounting position. (In most cases.)
The Unaohm T-40 has this function.
Posted 15 May 2013 - 09:59 AM
A quick Google search for Unaohm T40 brought up the full T40 User manual (T40 plus is the updated & current model)
The Australian Unaohm distributor is Lacey's TV www.laceys.tv
From memory, the T40 plus was around the $2K mark, but pricing would have altered since I last checked, so I recommend you check with Lacey's.
If they don't have a WA seller, they'll deal with you directly from their Melbourne head office.
The T40 is my backup meter.
As M'bozo mentioned a meter with the ability to display 5 channels of signals simultaneously is a huge benefit, which the T40 does and powers mastheads, etc.
I haven't seen/used the Emitor meter, but my opinion is the T40 plus is a far better instrument compared to the LabGear.
Posted 15 May 2013 - 10:08 AM
Posted 16 May 2013 - 08:18 PM
I have just got my Labgear DAT103, And it has an Amp Power Up Option which the DAT102 did not, other than that features remain the same.
It seems to work good except the ChBER readings are off by quite a bit when Compared to 3 Other Meters and MER is off by 4db compared to other meters when doing some more comparison. which all ready pretty much the same to each other. Hopefully it's just a fault with my unit and the others should be good.
Posted 16 May 2013 - 11:59 PM
I think you misread Storm's comments.
The way it reads to me is that Storm is saying the Unaohm T40 is far superior compared to the other meters you mentioned.
eg: T40 is a professional instrument, compared to the other meters as 'handyman' meters.
Which I would totally agree with.
Posted 17 May 2013 - 12:39 AM
It tells you a lot of information, if you can't fix a job with one you are in deep do do.It's also good when on the roof or under the floor
with the rubber case, I've used one for years now, had it calibrated and up dated the MER etc a while back.
Posted 18 May 2013 - 01:47 AM
If my DAT103 had a Histogram to compare each channel on one screen it would be the best, otherwise it's simple to use and has the majority of features I require.
Posted 18 May 2013 - 07:27 PM
For about 6 years. It's old. Sits in my vehicle until I have a difficult install, then gets pressed into use.
If you enquire about a T40, find out how easily it interfaces to a computer, the software upgrade path if one still exists, (& cost thereof), amongst other things.
You might be lucky if you can pick one up second hand, they are fairly robust bits of kit. Mine's had a hard life, & still works well.
but it seems to only read MER upto 30db
Speaking for myself, I don't agonise over this reading to much, I find it handy for fine tuning antenna pointing position at times, that's about all.
Far as I'm concerned, BER readings are more interesting.
(The question I ask myself now is are digital tuner/decoder blocks in some TVs superior to some of the instruments being used to set up domestic receiving systems? My feeling is the answer to this may well be yes.*)
*Of course, this may be dependent on the make, model & initial purchase price of the test instrument. I for one see no point is dragging a very expensive instrument onto someone's roof, particularly if the device is not overly portable, or easily damaged.)
Posted 18 May 2013 - 11:48 PM
I get to work in owing to terrain etc.So I find 36db a bit theoretical sometimes and as M'bozo says
accurate BER is a good indication of what is going on most of the time.
Posted 18 May 2013 - 11:56 PM
I'd agree with m'bozo the quality of some of the meters out there or maybe it's the guys reading them... you gotta wonder.
Posted 19 May 2013 - 12:10 AM
Not a bad deal-I would pay no more than $800 2nd hand.
Yep I'v got a hst2, love it, about to buy a digicube from a mate who has stopped installing. its going to be nice to have a picture to watch again like on my old promax.
Posted 19 May 2013 - 10:54 AM
I agree with the others that true BER and DCP readings, (particularly BER) is the most useful.
The T40 also has RS (Reed-Solomon) reading, which, combined with MER, can be very useful in sorting difficult reception and interference issues.
There's a lot of installers out there that don't even know what those terms mean, let alone how to utilise those features.
Posted 20 May 2013 - 09:28 PM