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microHAM © 2015 All rights reserved • • AVERAGE Uses averaged value from samples captured for one display point. This choice should be used when smoothness of provided waveform is more important than peaks. MIN-MAX It is a special acquisition type providing two waveforms on display. Lower is related to minimal value of the measured signal, higher to peak value of measured signal. This choice is useful to visualize noise or hum on measured signal. Oscilloscope uses peak samples from A/D convertor incoming at fixed rate of 125 thousands samples per second. For easier to use decade ranges, low ranges or advanced acquisitions, scope uses real time decimation and interpolation operations. Therefore minimal and maximal horizontal (timebase) ranges are the same for all acquisition types. 2. TRIGGER EDGE defines triggering condition. • • • • FWD RISING, rising edge of the Forward power FWD FALLING, falling edge of the Forward power IN RISING, logical rising edge (PTT activated) of the PTT IN input IN FALLING, logical falling edge (PTT deactivated) of the PTT IN input Both IN rising and falling edges includes 0.5ms software debouncing as IN input is usually driven by mechanical contact. Processing latency adds additional 0.2ms. 27