1T-C2-511 A
ND
1T-C2-520 O
PERATION
M
ANUAL
24
8.5
The ERROR LED remains illuminated on the 1T-C2-520.
Check that video is being input to the unit by connecting your video source directly to
the receiving equipment.
Check that the display video equipment is set to the correct line input and
format/standard as appropriate.
Check that the device connected to the output is on and can support the resolution of
the input device by comparing it with the resolutions in the specifications at the end
of this manual.
8.6
The picture on the video display is green.
The Output type is probably incorrectly set to YUV mode, whereas you are
connected to an RGB monitor – see Adjust outputs menu.
8.7
The output image is distorted.
This may occur where some of the areas of the image are dark and others are very
bright. The solution is to adjust the contrast and brightness settings on your Output
device to rectify the problem.
8.8
Changing the input resolution causes the output video to be unstable.
This may occur when changing between two similar resolutions (such as 720p
59.94Hz and 720p 60Hz). Because the unit is able to compensate for poor input
resolutions changing between similar resolutions may be seen by the unit as the
input frequency ‘drifting.’ In order to lock to the new resolution a power cycle or re-
connecting the input may be necessary.
8.9
There is no output from the 1T-C2-511.
Check that the input resolution is supported by the unit. The unit is designed to
conform to SDI specifications, for a full list of available resolutions look at the 1T-C2-
511 Input-output conversion table.
8.10 The PC is set to output 720P but there is no output from the 1T-C2-520.
Some PC graphic cards do not output 1280 x 720p correctly. There appear to be two
variants of this resolution, one with the correct number of lines per frame (750), and
one with the incorrect number (746). It would seem that this is due to some graphic
cards being unable to generate the correct pixel clock frequency (74.25MHz for 60Hz
and 74.1758MHz for 59.94Hz).
This makes it impossible for the 1T-C2-520 DVI-I to SDI convertor to correctly
convert this to HD-SDI. The only solution for this issue is to consult the graphics card
manufacture or try another graphics card.
