Radioconstructor `` Start TsCH-1 '' (Digital frequency counter).
Radio and electrical constructors, sets.IndicatorsRadioconstructor "Start TsCh-1" (Digital frequency counter) has been producing the Riga software "Kommutator" since 1989. The radio designer "Start CHTs-1" is intended for children aged 14 and over who are interested in building radio equipment. The kit contains units, parts and structural elements from which you can assemble and adjust a measuring device designed to measure the frequency of electrical signals of arbitrary shape. The designer provides two options for assembling the device: a digital frequency meter and a digital frequency meter with a reference frequency output of 1 or 2 Hz. The frequency counter is the main instrument of the set of measuring devices for the radio amateur, consisting of the following sets: power supply "IP-1", voltage-frequency converter "PNCh-1", signal generator "GZCh-1", RLC meter "I-1", power supply with logic probe "IP-2". All measuring devices assembled from these sets have the same dimensions and design and can be mechanically and electrically combined into a complex. Frequency meter characteristics: Measured frequency range from 10 Hz to 1 MHz. Input voltage range from 100 mV to 50 V. Number of indicated digits - 6. Measurement error no more than - 0.5% + -1 sign of the least significant digit. Measurement time - 1 s. Display time - 1 s. Input resistance, not less - 1 MΩ. Supply voltage - 9 V. Current consumption, no more than - 100 mA.
