Sdi Input Fail; Video Reference Fail; Gpi Configuration - pro bel V6402 HD User Manual

3.2.10

SDI Input Fail

V6402 and V6404/V6406/V6408/V6418 with SY option:
If the selected SDI input fails, then the output picture will be either frozen, set to black or the selected input
will switch from input 1 to input 2 (VIDEO : VFL Mode). If the Frame Delay option is not installed or set to
zero, the output will resume after a full frame of undisrupted video has been received. On units with the
Frame Delay option installed, resumption of the 'live' output will be delayed by the number of Frames set
in the VIDEO : F Delay menu.
V6404/V6406/V6408/V6418 without SY option:
If the selected SDI input fails, then the output picture will be frozen. The output will continue after a full
frame of video has been received.
V6418 in Short Delay Down Conversion mode:
When the V6418 is operating in Short Delay Down Conversion mode (ENG'ING : DownConv
: ShortDel), if the selected SDI input fails, then the output will be set to black. The output will continue
after a full frame of video has been received.
3.2.11

Video Reference Fail

V6402 and V6404/V6406/V6408/V6418 with SY option:
When there is no external reference signal present, the unit will use the selected SDI input as its timing
reference if VIDEO : Ref Src is set to Auto. If VIDEO : Ref Src is set to Ref I/P, the module continues
operating in a free-run mode if the external reference is invalid or absent.
Under the circumstances described above and depending on the setting of VIDEO : RFL Mode (Reference
Fail Mode), the module then switches automatically into a minimum delay mode (Min Dly) or it maintains
the delay set by the F-, V- and H- Delay controls (Adj Dly).
A module can be also forced to use the SDI input as its timing reference by setting VIDEO : Ref Src to
Vid I/P. In this case, the current setting in VIDEO : RFL Mode will be ignored and the total insertion delay
simply depends on the current settings in the F-, V- and H- Delay controls.
3.2.12

GPI Configuration

The modules have one GPI available at the rear with a BNC connection.
Connecting the input to 0v activates the GPI, leaving it open circuit de-activates it. The status is shown in
the STATUS : GPI menu as GPI ↑ or GPI ↓, the former being active and the latter inactive (despite the
fact that connecting it to 0v makes it active).
The GPI function can be set-up in the CONFIG : GPI menu to control the input selection, or switch the
module's output to 75% bars generated internally. The 75% bars output option will only function with the
SY option fitted.
Note that, if Video fail mode is set to "switch to I/P 2", the GPI can be used to set the source back to I/P 1
after the signal is restored. If the GPI is set to SDI1, it can be activated either permanently or
momentarily. If it is set to SDI2, a momentary activation resets the source back to I/P 1.
30
V6402, V6404, V6406,V6408
and V6418 HD converters
Issue 6