Grass Valley Kayak HD v.6.9.3 - Manual (Page 537)

Kayak — User Manual 537
Configuration Menus
H/V Blanking: The Modify button can be used to switch over between
transparent and blanked. In blanked position the V-gap
and the H-gap is replaced by BLACK and the DD35-
internal sync frame is added. In transparent position the
information contained in the V-gap (VITS, videotext etc.)
are kept. This function can be selected for each output
and AUX buses separately