Sony HDRC-4000 Operation Guide - Page 16

Field mode In this mode, when converting between HD-SDI and 3G-SDI Level-A, the space used for VANC data for 3G-SDI Level-A changes depending on whether the HD-SDI field is field 1 or field 2. When converting from HD-SDI to 3G-SDI Level-A, VANC is mapped as shown in the following figure. HD-SDI From previous field Line 9 Line 20 VANC1 Field 1 Video space 3G-SDI Level-A VANC1 VANC0 Line 9 Line 20 Line 29 Line 41 Video space Frame Line 571 Line 583 VANC2 Field 2 Video space VANC1 VANC2 Line 9 Line 20 Line 29 Line 41 Video space Frame When converting from 3G-SDI Level-A to HD-SDI, VANC is mapped as shown in the following figure. HD-SDI Field 1 Line 9 Line 20 VANC1 Video space To next field 3G-SDI Level-A VANC1 Line 9 Line 20 Line 41 Video space Frame Line 571 Line 583 VANC2 Field 2 Video space VANC2 Line 9 Line 29 Line 41 Video space Frame Restrictions To preserve VANC data, set the delay mode to NORMAL. VANC data may not be preserved correctly when the delay mode is set to MINIMUM. SR Live Metadata Input/Output When generating an SDR signal from an HDR signal, you can embed a group of required settings (HDR SDR Relation Table) in the VANC space of the SDI signal. This allows a receiving device to display the settings or to apply the group of settings to the HDR signal to SDR signal conversion settings automatically. 16