Accession Number:

AD0706852

Title:

TIME-MARKING HIGH-SPEED FILM IN MULTIPLE-CAMERA INSTALLATIONS

Descriptive Note:

Final rept. Jan-May 1968

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1970-06-01

Pagination or Media Count:

79.0

Abstract:

The general time-event correlation problem for high-speed 10,000- framessecond, motion analysis cameras is discussed. The specific optics, sensitometry, and electronics problems involved in placing precise time and event marks on high-speed film, in addition to the design and development of an operational time and event signal generator, are discussed. The generator features a tuning fork time standard, integrated circuit timing logic that can furnish independent time and event signals for up to 15 cameras. A current ramp- film density wedge generator is presented as a novel method for relating time- mark lamp current amplitude to film-mark density. Recently developed, solid- state, light emitting diodes LED were investigated for application to the time-mark problem. The LED proved capable of providing time-marking pulses at rates in excess of 200 kHz. A technique for analyzing a waveform to operationally test the neon lamp timing circuit is evaluated.

Subject Categories:

  • Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE