OPERATION
The VDA414 Video Distribution Amplifier is used to amplify
and distribute any B/W or color NTSC, PAL, or CCTV video signal.
The unique design allows the user to change the inputs and output
to make any of the following amplifier configurations.
SELECTABLE USER CONFIGURATIONS:
INPUTS
OUTPUTS
VIDEO CHANNELS
1 In
2 Out
4 Separate Channels
1 In
4 Out
2 Separate Channels
1 In
6 Out
1 Channel with an extra 1 In/2 Out
1 In
8 Out
1 Video Channel
2 In
4 Out
2 Separate Channels
The video level for each input channel is adjustable to allow
the user to set the proper level for the down stream equipment.
This adjustment is useful when feeding signals to a DVR (Digital
Video Recorder) or other digital devices. DVR’s and digital
devices are very sensitive to over and under video level, so the
ability to adjust the level prior to the device is sometimes
necessary.
OPERATION OF CLIPPER OPTION
This Video DA is also available in a Clipper Clamper version.
The VDA414C has the ability to clamp out low frequency
interference and distortion by back-porch clamping the video
signal. It also has a front panel adjustment for clipping level
that allows the operator to set a hard clip level on the video to
prevent over modulation of the down stream equipment. A front
panel L.E.D. indicates the point of video clip. The ordering
nomenclature for the Clipper Clamper version of this product is
VDA414C.
FRONT PANEL CONTROLS AND INDICATORS
A green "PWR ON" indicator on the front panel shows
that the video DA is active. The adjustable control on the
front panel set the video level output. Clock-wise rotation
increases the video output. The front panel Video Clipper
control (on VDA414C version) can be used to clip video levels
the exceed 120 I.R.E. units. By adjusting the Clip Control
you can set video clipping to prevent fast transient over
level signals from disrupting down stream equipment. When
video is being clipped a RED L.E.D. will illuminate to
indicate the clipping of video.
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