What do these inputs mean?

Bernard Barnett

Active Member
The back of my Sony plasma has two phono inputs marked HD and VD, alongside the component inputs. Does anybody have any idea what they're for? The manual says only "for connecting RGB equipment".


Active Member
One form of RGB connection requires 5 signals, I think HD and VD are Horizontal and Vertical Displacement. IIRC Apple Macs use this type of connection.


Exactly so. You can in fact connect a scart to 4 phono to these, provided the plasma can cope with the low sync frequency, not sure on the sony. Enables use of RGB scart instead of just YUV

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