Television Camera Tube Lag Tester
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AERO-ELECTRONIC TECHNOLOGY DEPT
Pagination or Media Count:
A unit was developed to provide a more versatile, convenient and inexpensive method of testing lag response in tv camera tubes. Lag is measured by exposing the tube to a step transition in irradiance and measuring the resultant transient response. The irradiance is provided by a 4 x 4 array of gallium arsenide phosphide light emitting diodes continually recycled on and off by a digital logic circuit. Controlling the on and off period permits the unit to be used in evaluating tubes which exhibit a wide range of lag response. A high degree of measurement accuracy is possible by use of a synchronizing trigger allowing for the observation of a single line of video. Details of the logic circuit operation, circuit diagrams, timing waveforms and a complete description of the operation controls are presented.
- Electrooptical and Optoelectronic Devices
- Test Facilities, Equipment and Methods