Image focus (focus adjustment) is maintained at all focal lengths (zoom-in) and constant distance from object by means of back focal distance adjustment. With unchanged optical focus adjustment and shortest focal length adjust the red and blue pick- up tube until optimum focus is achieved. If necessary optimize by alternating with optical focus adjustment. With shortest focal length and divergent focus adjust the pick-up tube in W-channel until optimum focus is achieved. Set optical focus at greatest focal length. ![]() Optical focus: Adjust focus of zoom lens at greatest focal length.īack focal distance (lens): Adjust focus at shortest focal length by regulating lens mechanically with adjustment screw and optimize alternatively with a).īack focal distance (pick-up tubes): If focus varies from channel to channel between greatest and shortest focal length, the individual pick-up tubes must be adjusted mechanically in the optical axis. The f/stop setting is automatically selected in Test Charts (with Auto or. SINAMICS Startdrive Basic V17 includes commissioning and diagnostics for the products listed above. With the aid of a low transmission filter and by means of low level lighting make sure that the camera is not over modulated with the aperture in the open position. The Siemens star on the Slanted-edge chart has no border to reduce maximum. SINAMICS Startdrive V17 is available in two versions. ![]() It shows a 72 sector Siemens star on a white background. ![]() The YE0121 test chart is designed for the adjustment of camera lenses and checking back focal distance. Siemens star (128 spokes) & Matlab code.svg 272 × 272 9 KB SilverFast Resolution Target USAF 1951.png 215 × 208 8 KB Sine pattern.png 732 × 731 11 KB SWTestbild.png 987 × 733 171 KB Tv. 720 × 540 160 KB USAF-1951.
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