When selecting a When selecting a suitable measurement range, the maximum expectedsuitable measurement range, the maximum expected
values for velocity, acceleration and frequency have to be taken intovalues for velocity, acceleration and frequency have to be taken into
consideratioconsideration. Orientation purely on the velocity is n. Orientation purely on the velocity is often not enough, as theoften not enough, as the
various measurement ranges have different bandwidths and various measurement ranges have different bandwidths and maximummaximum
accelerationaccelerations. The respective values are given s. The respective values are given in the specifications (refer toin the specifications (refer to
sec
sectitionon 7.17.1.3.3).).
MoMost st of of ththe ae apppplilicacatitionons as are cre covoverered ed by by ththe 1e 10 0 rarangnge. e. It It shshouould ld ththererefefororee
be selected for initial measurements with the PSV. A higher range only has tobe selected for initial measurements with the PSV. A higher range only has to
be selected if the obe selected if the overrange indicator OVER on the front of the verrange indicator OVER on the front of the controllercontroller
lights up permanently at scan points with high amplitude.lights up permanently at scan points with high amplitude.
FFoor r llooww--ffrreeqquueennccy y aapppplliiccaattiioonns s tthhe e rraannggees s 11 , , 5 5 aannd d 225 5 aarree
available. These measureavailable. These measurement ranges can be used from the frequency 0ment ranges can be used from the frequency 0 HzHz
((ffuulll l DDC C ccaappaabbiilliittyy)). . FFoor r bbootth h mmeeaassuurreemmeennt t rraannggees s 1 1 aannd d 5 5 pplleeaassee
pay attention to the information on setting the pay attention to the information on setting the tracking filter provided intracking filter provided in
sec
sectitionon 4.24.2.3.3..
For high-frequency applications the top three ranges of model PSV 300-FFor high-frequency applications the top three ranges of model PSV 300-F
((2255 ; ; 112255 ; ; 1 01 00000 ) ) pprroovviidde e aan n eexxtteennddeed d ffrreeqquueennccy y rraanngge e oof f uupp
to 1.5to 1.5MHz which can be digitallMHz which can be digitally processed up to 1y processed up to 1MHz by the softwMHz by the software.are.
If either the positive or negative end of the measurement range is reached theIf either the positive or negative end of the measurement range is reached the
overrange is indicated in the overrange is indicated in the software and the indicator OVER on the front osoftware and the indicator OVER on the front off
the controller lights up. As a the controller lights up. As a general rule, the next highest measurementgeneral rule, the next highest measurement
range should then be selected. Please note however, that the indicator isrange should then be selected. Please note however, that the indicator is
activated by very short overrange already which could be activated by very short overrange already which could be caused by noisecaused by noise
spikes. In such cases the measurement range can be spikes. In such cases the measurement range can be retained as long as it retained as long as it isis
suitable for the amplitude of the rsuitable for the amplitude of the required signal. Observing the signal in theequired signal. Observing the signal in the
time domain will provide clarification on this.time domain will provide clarification on this.
The controller is equipped with an The controller is equipped with an adjustable analog low pass filter whichadjustable analog low pass filter which
adapts the bandwidth of the measurement signal to the adapts the bandwidth of the measurement signal to the application. Whenapplication. When
displaying a signal in the time domain, the signal-to-noise ratio can bedisplaying a signal in the time domain, the signal-to-noise ratio can be
improved by limiting the bandwidth to the necessary extent. When analyzingimproved by limiting the bandwidth to the necessary extent. When analyzing
in the frequency domain, this filter has no additional benefit. With the filterin the frequency domain, this filter has no additional benefit. With the filter
switched on, its influence on both amplitude and phase of the velocity signalswitched on, its influence on both amplitude and phase of the velocity signal
has to be taken into consideration.has to be taken into consideration.
Note that the software uses appropriate antialias filters which areNote that the software uses appropriate antialias filters which are
automatically adapted to the bandwidth set.automatically adapted to the bandwidth set.
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