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The Tektronix DC 510 Universal Counter / Timer features reciprocal frequency to 350 MHz, period, ratio, events B during A measurements, and time A to B. The powerful reciprocal technique provides high resolution of low frequency signals much faster than conventional counting techniques. The pseudo-random, phase-modulated time base provides increased accuracy by eliminating synchronous errors in the time interval and width averaging modes. Auto trigger senses the applied signal and sets trigger levels to the optimum points. In the DC 5010, trigger levels, the minimum and maximum signal voltage levels, and the trigger voltage are available over the GPIB, and can be viewed on the 9-digit display. Channel A and Channel B Input; Frequency Range - 50 ohm termination: >0 to >= 350 MHz DC coupled. 100 kHz to >= 350 MHz AC coupled. 1 M-ohm termination > 0 to >= 300 MHz DC coupled. 16 Hz to >= 300 MHz AC coupled. Sensitivity - 50 ohm termination DC: <= 25 mV RMS sinewave to 350 MHz <= 70 mV p-p pulse 1 M-ohm termination. DC/AC <= 25 mV RMS to 200 MHz. 42 mV RMS to 300 MHz. Attenuation Selectable - 1X, 5X. Impedance - 1 M-ohm paralleled by 23 pf ±2.2 pF (10%) or 50 ohm ±3% DC. Dynamic Range - 70 mV p-p to 4 V p-p (x attenuation). Trigger Level Range - >= + 2 V to <= - 2 V with 4 mV resolution (X1). <= ±10 V to <= -10 V with 20 mV resolution (X5). Trigger Level Accuracy - ±1 % of F.S. trigger level range, plus ±2% of reading for a DC input V, ±40 mV X Attenuator. Autotrigger Frequency Range - 10Hz to <= 350 MHz. Independent Controls - Slope, Attenuation 1X / 5X, Couple AC/DC, Impedance 1 M-ohm / 50 ohm. Frequency A Range: <= 36 uHz to >= 350 MHz. Accuracy Resolution: ±(Time Base Error x Frequency A). Rise / fall A Range - 5.0 ns to 7.6 hrs.
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