Video Subtractor, Video Comparator,
Video Image Comparison   -   442 Series

Now Available for High-Definition!

The Model 442 Video Subtractor & Video Comparator allows the user to subtract or compare two video images. The unit performs a video image comparison by subtracting the image stored in its memory from the active picture at its input. Comparison (subtraction) of two live video streams is also possible. It is intended for use in inspection, registration, interferometry, quality control, surveillance and other applications where an easily viewed comparison of two video images can be used for decision making or process control.

The Video Subtractor & Video Comparator has two switch-selectable output modes. One provides the difference plus 0.5. The other provides the absolute value of the difference. Additionally, a switch is provided to invert the output thereby showing the reference minus the input instead of the input minus the reference. A "Difference Threshold" control allows adjustment of the unit's sensitivity to differences.

An additional operational mode allows subtraction of each video frame from the previous frame to provide "frog's eye" capability to display only motion in the scene being monitored by the input video camera.

Descriptions Online Ordering & Prices

Specifications

Model: 442CS: Video Subtractor, Video Comparator, Video Image Comparison Video Subtractor, Video Comparator, Compare Two Video Images
Owner's Manual: Manual-442.pdf
Size: 6.9"W x 4.9"L x 2.4"H sloping to 1.4"H
Mounting: Free standing desktop
Power Connector: 5.5 x 2.1 mm coaxial power jack, center-pin positive
Power Input: 5 VDC (120 VAC Adaptor included where appropriate)
Chassis: Black ABS
Video Input/Output: 1Vp-p, composite, 75 ohm (s-video optional)
I/O Connectors: BNC
Controls Resolution: Frame / Field (switch)
Memory Input: a / b (switch)
Memory: Freeze / Update (switch)
Subtract: Memory-Input / Input-Memory (switch)
Output: Absolute Value / Difference+0.5(switch)
Difference Threshold (potentiometer)

Model: 442: Video Subtractor, Video Comparator, Video Image Comparison
Owner's Manual: Manual-442.pdf
Size: 8"W x 8"L x 1.67"H
Mounting: Free standing, rack mount optional
Power Connector: IEC
Power Input: 100 to 240 VAC, 50/60 Hz
Chassis: Painted Aluminum
Video Input/Output: 1Vp-p, composite, 75 ohm (s-video optional)
Options: Rack Mount
I/O Connectors: BNC
Controls Resolution: Frame / Field (switch)
Memory Input: a / b (switch)
Memory: Freeze / Update (switch)
Subtract: Memory-Input / Input-Memory (switch)
Output: Absolute Value / Difference+0.5(switch)
Difference Threshold (potentiometer)
Power (with indicator) On/Off

Descriptions Online Ordering & Prices
  
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