Grass Valley ADX-1901 - Manual (Page 19)

GUIDE TO INSTALLATION AND OPERATION
ADX-1901 | 15
Additionally, some parameters are measured and their values displayed here:
• Temperature
• Voltage (V)
• Optical Power (dBm)
• Wavelength (nm)
5.3 Metadata panel
This panel contains two tabs that give access to metadata processing on the ADX-1901 card:
• TC-GPI
• AUDIO
5.3.1 TC-GPI tab
This tab controls timecode and GPI de-embedding from the input
SDI data stream.
Timecode presence:
The Status icons indicate the presence of different time code
formats – those that do not apply to the current input format are
grayed-out:
• DVITC (SD) embedded in the SDI input on the same line
that has been selected in this panel for de-embedding
• ATC-LTC (3G/HD) embedded in the SDI input
• ATC-VITC (3G/HD) embedded in the SDI input
The Timecode De-embedding section provides resources to
configure the de-embedding process.
• Delay: Adjust the timecode delay value to compensate
for a 1-to-50 frame offset between the video and the
LTC.
Value: [0, 1, 2, …, 50 frames]
• Extraction: Use the pulldown to specify the source of
extracted time code:
[OFF, DVITC, ATC-VITC, ATC-LTC, AUTO]
AUTO mode functions as follows:
o
3G/HD signal – the extracted signal will be VITC or LTC if either is present, and LTC if both are present.
o SD signal – the extracted signal will be DVITC.
.
• SD Detection Line: Use the pulldown to specify the line number to extract a time code (SD only).
[AUTO, 10 to 20 (SD525), 7 to 22 (SD625)]
In AUTO mode the ADX-1901 extracts the first timecode encountered in the vertical blanking interval. For
example, if timecode is present on lines 12 and 14, the line 12 timecode will be extracted.
Figure 5-4 Metadata Panel – TC-GPI tab