22-05-2020, 06:04 AM
Decoder chips, as used in many devices, have had to cope with VTR jitter. Now there is less need for this but I doubt if the capability has been dropped. The TVP150 as used on Hedghog and Aurora is a fairly modern device. The Aurora copes with VT replay. I don't know if anyone has tested Hedghog in normal 625>405 to see.
I suppose I could dig out a VHS machine, record some 405 on it and replay via my 405>625 converter. I would expect it to be OK but that's not the main purpose which is to recover CV2000 material. This has a nasty skip field system with non-standard V sync pulses. The other purpose is recovering archive Quadruplex where the jitter is very low and the waveform is accurate.
I didn't know that SIS had implicit timebase correction. I remember the revelation of first having a TBC (a CVS517) available in a small studio, c1976. Seemed miraculous.
The VR3000 Quadruplex (record only) was a backpack portable. If you were strong. Others Quads were on castors. Forklift and/or taill lift to move them more than a short distance. Up and down stairs was a job for specialists though I once arranged for members of the WIlliam Ellis School 1st XV to shift an RCA TR4 up one floor. They may not have been actual rugger types but they needed to be built that way. The TR4 was one of the smallest Quads. In the end we barely used it.
I suppose I could dig out a VHS machine, record some 405 on it and replay via my 405>625 converter. I would expect it to be OK but that's not the main purpose which is to recover CV2000 material. This has a nasty skip field system with non-standard V sync pulses. The other purpose is recovering archive Quadruplex where the jitter is very low and the waveform is accurate.
I didn't know that SIS had implicit timebase correction. I remember the revelation of first having a TBC (a CVS517) available in a small studio, c1976. Seemed miraculous.
The VR3000 Quadruplex (record only) was a backpack portable. If you were strong. Others Quads were on castors. Forklift and/or taill lift to move them more than a short distance. Up and down stairs was a job for specialists though I once arranged for members of the WIlliam Ellis School 1st XV to shift an RCA TR4 up one floor. They may not have been actual rugger types but they needed to be built that way. The TR4 was one of the smallest Quads. In the end we barely used it.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
