Popis Portable microprocessor-controlled device with quartz-controlled time base for observation of periodic movements, as well as for frequency and rotation speed measurement. Xenon flash tube built into a robust plastic casing with handle and photo thread for mounting on a stand, continuous frequency adjustment in two ranges through coarse and fine setting using control knobs, 4-digit digital display permits readings of the desired flash sequence per minute. Meas. ranges: 100 min-1 –1000 min-1 (approx. 1.5 Hz –18 Hz) 1000 min-1 –10000 min-1 (approx. 18 Hz –165 Hz) Accuracy: ± (0.05% + 1 digit) Display: 4-digit LED Resolution: 0.1 min-1 (< 1000 min-1) 1 min-1 (1000 min-1 –9999 min-1) 10 min-1 (10000 min-1) Flash duration: 60 µs –100 µs Flash energy: 4 Ws Flash angle: 80° Dimensions: 210x210x120 mm3 approx. Weight: 1 kg approx.