Adtec digital RD-70 (version 1.02.04) Manual - Manual (Page 27)

Teletext
CVBS Line
Number
Enables/Disables the CVBS/SD-SDI port line
number for waveform Teletext.
0 - Disabled
22 - Output teletext
if present
SDI Line Number Configures the SDI ANC line output of
OP47/Teletext ( SDI Output Port 1 and 2 )
0 - Disabled
7 - 22
SDI Alt. Line
Number Configures the SDI Alternate ANC line output of
OP47/Teletext ( SDI Output Port 1 and 2 ) 0 - Disabled
7 - 22