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> Colorado video inc. video micrometer 305A
Colorado video inc. video micrometer 305A
with 4 1/2 digit meter and BCD data; 3 position
The Model 305A accepts standard composite video signals and superimposes two vertical white
lines on the reproduced image, as seen on a television monitor. The marker lines may be. manually
positioned over 80% of the active television raster, and separated by as much as 50% of the
screen width. Displacement of the two marker lines generates a linear DC voltage change which
is displayed on a front panel digital voltmeter. A third horizontal marker may be used as an electronic
The primary application of the Model 305 is the dimensional analysis of objects seen by a television
camera. To some degree this requires a-.objective evaluation of the target boundaries by
the human operator, but as a special feature, the Model 305 incorporates a unique video waveform
display superimposed on the monitor screen which allows more objective and repeatable determination
of soft or fuzzy target boundaries. Image enhancement circuitry is also incorporated
in the Model 305 to provide significant contrast range expansion, thus making boundaries of
low amplitude targets more easily viewable .
Physically, the Model 305 is a table top mounting device (rack mount optional) and is configured
so that a television monitor may be set on top of the unit.
Typical application of 305A Micrometer shown in system with microscope and standard CCTV equipment.
Power: 100/115/230 VAC, 50/60 Hz - 22 VA
Input: Composite video; 1V p-p, 75 ohms
Outputs: Video to monitor: 1V p-p, 75 ohms
Marker positionability : 80% of active raster
Marker separation: 0 to 50% of active raster
Spatial resolution: to one part in 1500
