JV
James Vertigan
Founding member
Ah... well that may explain the BM bit, as last time I checked, CITV came from Birmingham (ITV Central).
ES
Citv has been produced in Manchester for about a year now. It will simply be down to a network switch on ITV's network, which happens every day at 09:25 and 06:00 - the switch between GMTV's configuration and ITV's.
As I said before, a CNAP is BT property, not ITVs, so even if Citv was still coming from B'ham, you still shouldn't have seen these test generators.
Now you have given us a time, has anybody in Scotland experienced a similar thing at 09:25?
As I said before, a CNAP is BT property, not ITVs, so even if Citv was still coming from B'ham, you still shouldn't have seen these test generators.
Now you have given us a time, has anybody in Scotland experienced a similar thing at 09:25?
MA
It's a test signal for measuring Luminance to Chrominance delay, the Tektronics TSG-300 generates it [1] , and you'll find it on an SP Beta alignment tape.
[1] Other test signal generators are also available
StevieB posted:
This has appeared on UTV 3 or 4 times in the past week and I'm just interested to know what it is and what it is used for:
It's a test signal for measuring Luminance to Chrominance delay, the Tektronics TSG-300 generates it [1] , and you'll find it on an SP Beta alignment tape.
[1] Other test signal generators are also available
TI
Are we sure this pic is not one of UTV's new idents? It's much better than the tripe they have had for the last few years!
CA
It is a test signal originating from the BT switcher in Birmingham.
CNAP stands for Core Network Access Point and replaced the NSC, National Switching Centres.
PY is an abreviation for Priestley. The switcher is known as the Priestley switcher, but I can't remember why.
The reason your seeing it on air is that the one of the switchers on the BT network has lossed it's time reference and has drifted out slightly by a frame or two maybe. It's a common problem which only seemed to get noticed and fixed when the engineering staff at Central in Birmingham pointed the problem out to BT.
To be Frank I think those days are long gone.
CNAP stands for Core Network Access Point and replaced the NSC, National Switching Centres.
PY is an abreviation for Priestley. The switcher is known as the Priestley switcher, but I can't remember why.
The reason your seeing it on air is that the one of the switchers on the BT network has lossed it's time reference and has drifted out slightly by a frame or two maybe. It's a common problem which only seemed to get noticed and fixed when the engineering staff at Central in Birmingham pointed the problem out to BT.
To be Frank I think those days are long gone.