US Army Technical Bulletin, TB 9-6625-2024-24 CALIBRATION PROCEDURE FOR OSCILLOSCOPE OS-245(P)/U, AND TEKTRONIX TYPES 7603 AND 7603N OPT 11S, VERTICAL AMPLIFIER AM-6565/U, AND TEKTRONIX TYPES 7A15A AND 7A15AN OPT 11, AND DUAL TIME BASE TD-1085/U AND TD
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