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7700 MultiFrame Manual
7736CD2 Dual Composite Decoder
8.6.10. Noise Reduction
Video
Analog Video Processing
Noise Reduction
Off
On
8.7.
CONFIGURING THE GENLOCK CONTROLS
The Genlock menus are used to configure parameters associated with both video processing channels.
The chart below shows the items available in the Genlock menu. The following sections provide detailed
information about each of the parameters.
Video standard
Genlock source
Free-run freq
8.7.1. Setting the Video Standard
Genlock
Video standard
NTSC/525
PAL-B/625
8.7.2. Genlock Source Selection
Genlock
Genlock source
Ref. 1,
Ref. 2, card ref,
None
Page - 26
When turned on, a small amount (~ 0.7dB RMS) of wideband noise
reduction is applied to the signal. The noise reduction gracefully turns
on as the signal level amplitude lowers below about –25dB RMS.
Signals above this are probably image detail and not noise. Also, this
graceful "turn-on" eliminates artifacts if sudden on/off application of
noise reduction was applied.
Selects the card operating video standard.
Selects the input source for the reference signal.
Sets the VCXO free-running frequency.
The video standard is selected with this control.
Note: Auto mode is not available. It would cause inter-channel
standard selection arbitration issues.
This control allows you to select the reference video input to the frame
synchronizer. The reference must be an externally supplied colour black.
Optionally, the synchronizer can be free-run if the "none" option is
selected.
There are three possible sources of reference video; the card reference
input BNC and two reference inputs (Ref. 1 and Ref. 2) on the frame
(7700FR-G only).
Make sure to adjust the video H and V output phase controls to calibrate
the output phase of each of the videos.
Not available will be displayed if the +S option was not purchased.
Revision 1.0.4
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