FIELD: medicine.
SUBSTANCE: device contains the generator of linearly changing electrical pressure, the voltage-frequency converter, a source of light impulses, the calculator, the indicator block and the impulse shaper on signal recession. The generator output is connected to an input terminal of the converter an electrical pressure-frequency. Its output is connected to an input terminal of a source of light impulses and the first input terminal of the calculator. The calculator output is connected to an input terminal of the indicator block. The function switch, the second impulse shaper on signal recession, an OR element, the valve, the generator of second impulses, the univibrator, the counter, the second indicator block, the first and second keys are in addition included into the device. The output of the switch of modes is connected to an input terminal of the generator of linearly changing electrical pressure. The output of the first impulse shaper on signal recession is connected to the first input terminal of the OR element. Its second input terminal is connected to an output of the second impulse shaper on signal recession, and an output - with the second input terminal of the calculator. The output of the voltage-frequency converter is also connected to the first input terminal of the valve; its second input terminal is connected to an output of the generator of second impulses, and an output - with the computing counter input terminal; its output is connected to an input terminal of the second block of indicators. The output of the generator of second impulses is connected also to the one-shot input terminal which output is connected to an input terminal of zeroing of the counter. Outputs of the first and second keys are connected according to the first and the second input terminals of the switch of modes and to input terminals of the first and second shapers of an impulse on signal recession.
EFFECT: determination of visual resolution on frequency of light flashings in all bands of visible frequencies of light flashings at reduction of initial frequency.
2 dwg
