Analogue TV delayed?

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** Hi,

Normally there used to be a 1 to 2 second delay between the images and sound  
on a digital TV as compared to an analogue one tuned to the same program.  
But in Sydney at least, this is not true any more.

With the two sets I have, ABC1 shows no time delay.

Ch 7 digital shows about 1 second, ch 9 digital about 100mS and ch 10  
digital a whopping 3 seconds.

If you have an analogue TV and digital TV available, you can check this out.

Weird  - eh ?

...    Phil

Re: Analogue TV delayed?
On 11/18/2012 2:12 PM, Phil Allison wrote:
Quoted text here. Click to load it

**When I was working in a mate's TV repair shop a couple of years back,  
we noticed that the delay from Channel 10 was incredibly long. Certainly  
in the order of 3 - 5 seconds. The other channels were no where near as  
long, but the delay was certainly noticable.

Trevor Wilson

Re: Analogue TV delayed?
On 18/11/2012 2:12 PM, Phil Allison wrote:
Quoted text here. Click to load it

My best guess would be that the analogue signal is now being produced by  
running a decoder on the digital signal, so that whether you're watching  
analogue or digital, you have the same inherent delay, with the only  
difference being where the decoder is physically located.

If this is correct, then on analogue one should see the same obvious  
compression artefacts in content with rapidly changing illumination  
(discos, reporter's camera flashes, etc.).


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