Difference between revisions of "I-189"
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| + | Calibrator I-189-A is a range calibrator for pulse-triggered range oscilloscopes. The oscilloscope sweep is triggered at approximately 480 cycles per second (cps), and the range is calibrated by direct comparison with 500-yard calibration markers. The unit is a portable, self-contained instrument. It contains a crystal-controlled, 327.80-kilocycle (kc) oscillator which furnishes the 500-yard markers and the 480 cps synchronising pulse outputs. Two coaxial cables for connecting the instrument to the set to be calibrated are provided. | ||
| + | [[File:I-189-A.jpg]] | ||
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==References== | ==References== | ||
* {{pdf|TM 11-1227 1945.pdf|TM 11-1227 May 1945}} | * {{pdf|TM 11-1227 1945.pdf|TM 11-1227 May 1945}} | ||
Latest revision as of 18:56, 30 November 2015
Calibrator I-189-A is a range calibrator for pulse-triggered range oscilloscopes. The oscilloscope sweep is triggered at approximately 480 cycles per second (cps), and the range is calibrated by direct comparison with 500-yard calibration markers. The unit is a portable, self-contained instrument. It contains a crystal-controlled, 327.80-kilocycle (kc) oscillator which furnishes the 500-yard markers and the 480 cps synchronising pulse outputs. Two coaxial cables for connecting the instrument to the set to be calibrated are provided.
