Hey all,

Has anyone experienced any problems with, specifically changing channel to SBS, and ocassionaly digital artifacts appearing on "SBS Digital" in the Sydney area?

I have seached the forums, and all I have been able to find is Channel 7 related issues, however no SBS. All channels work fine with me, having installed high quality cabling and F Type Connectors. Every other channel is flawless, however SBS is a little dodgy, does anyone have any ideas?

Im stumped, and I dont want to complain about the unit, as it works fine, a great unit, and all you Teac patriots hopefully can susgest ideas in which i can "improve the SBS" factor.

Brody

What are the antenna readings, dBuV, for SBS? It may be too low, it may be too high.

Reading as in "technical" signal strength? I borrowed a ANALOGUE for my setup, six months ago, however I cannot use it as digital, as noted on DBA.com.au is incompadible.

My Antenna is a Digi DG30 VHF/UHF TV Antenna Digi DG30 VHF/UHF TV Antenna Information

I do not have the tools for digital techno readings, however hopefull at looking at the information on DSE, you can tell me what I need to do.

Look forward to your reply.

Brody

The STB has a signal strength indicator on the info page for the channel. It's the horizontal coloured bar.

Oh, its allways at full (green to the maximum level), and I assume that it should considering the Digital Broadcasting Area is only 2 suburbs away! All channels including on SBS is allways on full reception when you change the channel (its on the status bar at the top) however, in the "Channel List" the smaller digram of signal strength (looks like a triangular graph) is all but one bar to max signal. What does that mean? Other than that, clarity and crispness for any other commercial channel is perfect, except SBS. The manual states that such events are the broadcasters fault, and not the unit. Perhaps there is some truth in the "non-self descrimatory" statement by TEAC?

You probaby have too much signal, try an attenuator in the fly lead.

Too much signal?

Lol, I have never considered that to be the case! When you say "attentuator" is it like Variable Attenuator?

Check the specs for SBS on the channel search page of the DV-B420 (multiplex ch33 i think it is). If SBS has "CR" of 2/3 and/or "GI" of 1/8 then it may be the STB that cannot handle these channels properly. Here in Adelaide channels 7 and SBS both have those values and whenever I change to those channels I get an awful sound scratching and popping. It is not my reception or faulty hardware/software of the STB as I have tested both. I'm still hoping TEAC will give me some word on whether they will fix this problem in the next software upgrade since it is unbearable and very easy to fix in the software (ie a brief mute when changing to channels).

As far as reception for SBS goes I have found it to be slightly improved using a good quality amplified indoor antenna, with the gain set to about half way. My signal quality and strength stay at 100% 24hrs a day (with the standard rabbit ears they would occasionally drop at odd times of the day and then return to 100% at a later time).

I have no problem with the 420 on SBS in Sydney.
Try doing a manual rescan of SBS (the channel no is on the bottom right in the EPG menu -34 in Sydney). It's in "channel search" menu - press OK to tick the channel and do the rescan and OK to save. Both signal strength and quality bars are displayed and these may help you.

DAC

Yup, that's the one, another knob to twiddle...

"When you say "attentuator" is it like Variable Attenuator? "

I checked the SBS technical stuff, and CR is of 2/3 and GI is of 1/8. Im not exaclty sure what that means, however, the lego blockies and clicking onyl happens during a channel change.


I have rescaned SBS and the lego blockie transition to SBS is not as frequent. Either is the clicking. Im located closest to the Artarmon trasnmitter, so mabey its a SBS capability thing?



I will try other "less-envasive" methods first, I dont like having lots of cable/ areas of cable rejoined as im sure it looses quality.

I have a question to you all, this is not on the subject of SBS
If a new channel becomes available, such as , say a cooking channel called Cooking 83, will I have to rescan all the channels to make it pop up in the list of channels? Or does the unit do it automattically? It would be good if it did, does it?

If a new channel appears - eg Ch47 has just arrived here - it should automatically find it, but i haven't seen this happen yet.
To do it manually, just rescan the particular main (RF) channel - you don't have to do a complete rescan.

DAC

Oh, ok. But how do you knwo that there is a new channel, if you dont knwo what the new channel's number to scan is? So, you say there is a new channel, 45 hey? That isnt part of the "Channel 44 network", is it? Bumber, I was hoping that it would do it automattically!

All,
I have answered a question on receiving signals close to the Sydney transmitters on the Sydney Geographic strand.

SBS transmit less error correction data than all Sydney stations except Seven, because they wish to send more information. Since they use a high channel number there is less interference anyway. That is what that ratio is all about.

AlanH

Ah, thats for that. So thats why SBS has more channels of "world news" instead of error correction. I wonder if that is going to change in the near future.....

All,
The channel 35 transmitter is radiating a signal similar to all other digital TV signals. The data stream contains an identifier which identifies the transmission with a logical channel number starting with 40. The other logical channel numbers starting with 4 are all part of the same data stream. This means that the STB does not do any retuning when selecting any logical channel number unless the most significant (Left Hand) number changes. As an example TEN uses channel 11 for its digital signal but its logical channel number is 1. etc. The logical channel number is what selects the program on the remote control by pushing a number.

AlanH

Actually SBS and Seven have more error correction packets compared to ABC, Nine and Ten. SBS and Seven have 19mbits for content vs 23mbits for ABC, Nine and Ten.