I have no idea of the current percentage, but a great many LPTV stations are
using the same SD 4:3 analog equipment they were using before digital TV
standards were established.
Most digital encoders are built to accept a composite input, which is the only
digital thing in the studio.
You are correct that it is a sequence of D-A then A-D conversion, but when your
master control or switcher is analog then the digital signal isn’t considered
in the programming process by the station operator.
Matt Smith
Happily retired from
WGSR-LD Reidsville, NC
On Dec 31, 2020, at 12:53 PM, Norm Kaiser <dmarc-noreply@xxxxxxxxxxxxx> wrote:
Hi folks!
I was hoping everyone could help me understand some LPTV basics.
I've been partner now in a diginet for over two years. One thing I'm not
understanding is the fact that almost all of our affiliate stations, when we
go to ship them our playback device, almost all of them request a composite
output.
Composite is analog.
The output of the playout device is digital HDMI.
The broadcast standard is digital.
So aren't the affiliates taking a digital output, converting it to analog,
then converting it back to digital again?
Why is this done? Is it because many folks don't have HDMI encoders?
Thanks!
Norm
