Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3
727 posts

Ultimate Geek
+1 received by user: 7


  Reply # 489653 5-Jul-2011 13:33
Send private message

Oh - P.S.

I say as many as 5 - while some claim more are possible, I've had a couple of glitches where I've ended up with some empty recording files. I think the common factor may be trying to record 6 events, but I haven't confirmed this by experiment yet. Given the relative dearth of interesting material, it's only ever an issue at 8:30 pm on a Saturday, about once in a blue moon.

6601 posts

Uber Geek
+1 received by user: 531

Trusted

  Reply # 489654 5-Jul-2011 13:34
Send private message

Sweet, cheers.

Yes the multiswitch seems to be the key for many people wishing to do as you describe with dual tuner PVR's, like that new dishTV 7090 I think it's called. Without the multiswitch (edit: and without the ability to 'split' the tuners),  I think it would behave as I've discussed above. ie if you connect directly, one tuner to one polarity, then you'd effectively have a single tuner unit for freeview.

 
 
 
 


Try Wrike: fast, easy, and efficient project collaboration software


13 posts

Geek


  Reply # 489659 5-Jul-2011 13:47
Send private message

Thanks LookingUp, 

When I finally get the Duo, I wouldn't mind a copy of you cook book or a heads up what needs to be changed (is it shell, pearl or 'c' ).  sounds great.  Pitty there isn't a code repository on geekzone.

Oh, the Duo's appear to be on backorder with a number of suppliers (Auckland).  Not sure if there are any suppliers wellington.

cheers.

727 posts

Ultimate Geek
+1 received by user: 7


  Reply # 489672 5-Jul-2011 14:49
Send private message

OK - I've just exchanged some emails with the importer. There's a new shipment of Duos due in 2 weeks.



13 posts

Geek


  Reply # 489674 5-Jul-2011 15:01
Send private message

I was holding back from saying this...  Great Success, High Five...

Cheers,  =;o) 

727 posts

Ultimate Geek
+1 received by user: 7


  Reply # 489691 5-Jul-2011 15:26
Send private message

Jaxson: Sweet, cheers.

Yes the multiswitch seems to be the key for many people wishing to do as you describe with dual tuner PVR's, like that new dishTV 7090 I think it's called. Without the multiswitch (edit: and without the ability to 'split' the tuners),  I think it would behave as I've discussed above. ie if you connect directly, one tuner to one polarity, then you'd effectively have a single tuner unit for freeview.


If you use a splitter to connect both tuners to the same feed, or loop internally, you can still record multiple events from two different transponders, but they must all use the same polarity.  If they don't, you won't get the V-pol ones (the lower supply voltage used to select this is swamped by the higher one used to select H).  In practice here in NZ, since all of the Freeview and Sky services are on H, using a multiswitch and separating the tuners is only of benefit to those who want to get SBS (and the CH9 services - I think they are V-pol too) at the same time as FV/Sky.

I have to confess to a bit of confusion over exactly how the LNB/multiswitch set up I have works, but since it does, I haven't delved very deeply.  I initially thought that one of the outputs of the LNB was specifically V, and the other H, and that I'd have to attach each to a corresponding input on the multiswitch.  Now either I was lucky (unlikely), or the system is xarqiproof, and works no matter how inept the installer.  I looked for labels on the LNB, found nothing, and just wired it all up at random and it worked.

I now suspect that the LNB outputs are each able to deliver either H or V depending on the voltage they are fed, but the multiswitch function still seems a bit like magic to me. 

4731 posts

Uber Geek
+1 received by user: 1445


  Reply # 489697 5-Jul-2011 15:38
Send private message

xarqi: I now suspect that the LNB outputs are each able to deliver either H or V depending on the voltage they are fed, but the multiswitch function still seems a bit like magic to me. 


You are correct - the LNB will output Horozontil if fed 18v and vertical if fed 14v. Each output from the LNB can output either one.

The various inputs on the multiswitch feed those voltages out to the LNB - so the input on the switch from (say) Optus D1 horozontil is being fed 18v to ensure it gets the correct (horozontil) signal from the LNB.

On a basic 2 input (H&V) 4 output switch, it works very simply. The output to a reciever looks at the voltage it is being sent from the recevier (14 or 18) and then connects that reciever to the appropriate input(14 or 18) on the other side of the switch.

With more that 2 inputs, things get more complicated, with the receiver basically sending a coded message up the line to the switch to tell it what to connect to... (i.e. DiSEqC / toneburst etc.)

727 posts

Ultimate Geek
+1 received by user: 7


  Reply # 489703 5-Jul-2011 16:03
Send private message

And there I was thinking Maxwell's demon was sitting up there on the dish telling the electrons which way to go.

I'm obliged to you, Sir.

364 posts

Ultimate Geek
+1 received by user: 41


  Reply # 489734 5-Jul-2011 17:12
Send private message

tools: Thanks LookingUp, 

When I finally get the Duo, I wouldn't mind a copy of you cook book or a heads up what needs to be changed (is it shell, pearl or 'c' ).  sounds great.  Pitty there isn't a code repository on geekzone.

Oh, the Duo's appear to be on backorder with a number of suppliers (Auckland).  Not sure if there are any suppliers wellington.

cheers.


Sure - no worries :-)

The code is in Python, and was pretty easy to read and extend.




Things are LookingUp....  A photo from my back yard :-)
http://www.astrophotogallery.org/u141-rodm.html 


921 posts

Ultimate Geek
+1 received by user: 39


  Reply # 489746 5-Jul-2011 17:47
Send private message

The Vu Duo is being replaced sometime by the Vu Ultimo which may explain supply issues.


Oh, the other item I am looking at is whether to shell out for a 1.2meter dish for the SBS channels or go with a 90cm dish. (it's like build a car from scratch again, stay with a straight worked 6 or over kill with a nasty V8)... so many options.

Don't forget about Ausralia Network on Intelsat 5 if you're interested.



13 posts

Geek


  Reply # 489767 5-Jul-2011 18:44
Send private message

Thanks bfg,

I noticed the (coming soon...) on the Vu site.  It will be interesting to see what the specs are.

Cheers.

727 posts

Ultimate Geek
+1 received by user: 7


  Reply # 489772 5-Jul-2011 19:15
Send private message

tools: Thanks bfg,

I noticed the (coming soon...) on the Vu site.  It will be interesting to see what the specs are.

Cheers.

Three tuners, a faster processor, and a universal remote are the known highlights.  Likely much more expensive than the Duo.
In my email, I also asked the importer about whether he had any plans to bring this unit in to NZ when the time came, but he vouchsafed no reply on the subject.  Commence speculation in 5...4...3...

4731 posts

Uber Geek
+1 received by user: 1445


  Reply # 489906 6-Jul-2011 08:19
Send private message

Here's a Vu+ Duo for sale on Trademe...



13 posts

Geek


  Reply # 489926 6-Jul-2011 09:18
Send private message

Thanks Rman,

I will have to keep on eye on that one.  I am just waiting on a price for one at the moment.

Cheers.



13 posts

Geek


  Reply # 490423 7-Jul-2011 09:25
Send private message

Hi, is it possible to run up a wine session on the Duo?


Cheers.

1 | 2 | 3
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Amazon launches the International Shopping Experience in the Amazon Shopping App
Posted 19-Apr-2018 08:38


Spark New Zealand and TVNZ to bring coverage of Rugby World Cup 2019
Posted 16-Apr-2018 06:55


How Google can seize Microsoft Office crown
Posted 14-Apr-2018 11:08


How back office transformation drives IRD efficiency
Posted 12-Apr-2018 21:15


iPod laws in a smartphone world: will we ever get copyright right?
Posted 12-Apr-2018 21:13


Lightbox service using big data and analytics to learn more about customers
Posted 9-Apr-2018 12:11


111 mobile caller location extended to iOS
Posted 6-Apr-2018 13:50


Huawei announces the HUAWEI P20 series
Posted 29-Mar-2018 11:41


Symantec Internet Security Threat Report shows increased endpoint technology risks
Posted 26-Mar-2018 18:29


Spark switches on long-range IoT network across New Zealand
Posted 26-Mar-2018 18:22


Stuff Pix enters streaming video market
Posted 21-Mar-2018 09:18


Windows no longer Microsoft’s main focus
Posted 13-Mar-2018 07:47


Why phone makers are obsessed with cameras
Posted 11-Mar-2018 12:25


New Zealand Adopts International Open Data Charter
Posted 3-Mar-2018 12:48


Shipments tumble as NZ phone upgrades slow
Posted 2-Mar-2018 11:48



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.