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Mach HD V2 Motion Compensated Standards Converter with Synchronizer, Up, Down, and Cross Conversion
Version 1 Issue 1
©
Snell 2009
Page 50
Output
The options on the Output tab allow the output
format and genlock settings to be specified.
Output format
Use this control to select the output format from
the following supported standards:
•
625i
•
525i
•
720P
50
•
720P
59.54
•
1080i
50
•
1080i
59.94
Closed Caption
Selecting the CEA608 closed caption option
enables CEA608 in SD (NTSC).
Selecting the CEA708 closed caption option
enables CEA708 in HD (59.94).
Use the slider bar to specify the CEA708 output
line. The output line can be set from line 8 to line
20 (in steps of 1 line). The preset value is line 9.
Note: Insertion is only possible if CC data is
present on the input.
Genlock
Enabling Genlock (either Reference Lock or Input
Lock) will lock the output video clock to the
genlock source (input or reference) regardless of
the video standard. If the genlock source and the
video output are of the same frame rate (i.e. 50 Hz
or 59.95Hz) genlock will lock the output to the
vertical phase of the source, giving consistent and
repeatable delay.
When attempting to pass non-PCM audio it is
essential that genlock is enabled. If using an
external reference, it must be clock-locked to the
input video.
•
Reference lock: Output video is locked to
an external reference. The offset between
the external reference and the output can
be adjusted over a range of approximately
+/- 32us using the Genlock phase controls
•
Input lock: Output video, if the same line
and frame standard, is locked to the
selected input video source. When
converting between line or frame standards
this mode is not available.
•
Free run: Output video is locked to an
internal reference clock.
Note: Non-PCM audio will always be
corrupt if Genlock is set to free run.
H Phase
The H Phase control allows the horizontal genlock
phase to be adjusted from +1320 to -1319 pixels in
one pixel increments. The H Phase preset value is
0.
SD phase
SD Gen phase is used to specify the phase offset
between the reference and the SDSDI output
when outputting SD in Reference Lock mode with
an appropriate SD reference applied.
Select the genlock offset b32us and -
32us in 37ns steps
Preset is 0us.
Note: These controls are only available when the
Mach HD is reference locked to a source of the
same frame rate as the input video. The control is
disabled when the unit is input locked and a fixed
minimum delay is set.
