square wave


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square wave

Cardiology An abnormal BP response to the Valsalva maneuver–VM, seen in left ventricular failure; BP ↑ at the onset of the VM, remains elevated until VM is released, after which the BP abruptly drops to baseline without 'overshooting' the baseline pressure, accompanied by little change in the pulse pressure or tachycardia.
References in periodicals archive ?
Caption: Figure 4: Control input in square wave reference tracking.
From the results of the all five types of UPS it is clear that the harmonics order of modified sine wave and square wave UPS is the same but the %THD of square wave type is 34.
Vrba, "Practical aspects of operation of simple triangular and square wave generator employing diamond transistor and controllable amplifiers", in Proc.
If we send an ideal square wave signal into a real interconnect, its spectrum will be multiplied by this transfer function.
The model HMC426MS8 is a SiGe MMIC divide-by-4 prescaler that operates from DC (with a square wave input) to 4 GHz input frequency, and accepts a wide input power range of -15 to +10 dBm.
I found out the hard way that this satellite computer setup doesn't like modified square wave.
Inputs include: an rpm trigger input via a 12 V square wave or ignition coil signal; integral manifold absolute pressure sensor; pedal position sensor input; engine temperature compensation; rod Lambda sensor input.
Units equipped with incremental encoders offer 360 pulses per revolution with output consisting of two square wave signals with 90-degree phase difference.
The ratio of on time to cycle time (duty ratio) of the square wave determines the amplitude of the output voltage, and hence can be varied to regulate voltage.
However, when more extensive functional testing is required, such as measuring voltages greater than 100 volts, applying a square wave to a section of the circuit or making a time domain measurement, many of these testers cannot perform these tasks.
In addition to a sine signal, AWG-4151 can generate such standard signals like square wave, pulse, noise and user signals with a frequency range from 1 [micro]Hz to 10 MHz: rising and falling exponentially, Sin (x)/x and DC signal.