USM-441 AN/USM-441 Time Marker Generator. Equal to Ballentine 6130A. precise high quality calibration tool used to check and calibrate the sweep ranges of oscilloscopes with bandwidths to 250 MHz, as well as sampling oscilloscopes, frequency counters, spectrum analyzers and signal generators. It can also serve as a secondary time standard and additionally offers a convenient method of checking raised time alignment of oscilloscope vertical amplifiers. Unit provides four different time coincident outputs; time markers, high frequency sine waves, trigger period intervals (square wave), and a 10 MHz crystal clock output. Requires 120 VAC 60 Hz. 12.5" X 8.3" X 6. 9 lbs SH. Used Checked.
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