Brightness fluctuation results from the fact that LEDs very quickly respond to voltage fluctuations. Flicker influences human health and mood, and our sense of well-being. It can trigger epileptic seizures, migraine headaches, fatigue, restricted visual acuity, distraction and impaired vision. In the case of rotating objects, the strobe effect can lead to erroneous evaluations and accidents.
Previous time range parameters such as flicker percentage, flicker index and flicker frequency are no longer sufficient, which is why new calculation procedures and parameters have been developed. These include PstLM and SVM, whose importance has increased due to the establishment of limit values in EU ecodesign requirements. Flicker assessments in accordance with IEEE 1789 and ASSIST Mp are used outside of Europe.
The universal MAVOPAD covers all of these calculation procedures and flicker parameters. In addition to displaying the parameters, the time curve and the frequency spectrum are also depicted. High 16-bit resolution and a fast sampling rate of up to 1.6 MHz even make it possible to measure lighting dimmed with high PWM frequencies. By means of updates, the MAVOPAD is also open for additional complex evaluation procedures.
16-bit A-D converter resolution.
Up to 1.6 MHz with as many as 4 measuring channels.
PstLM, SVM, flicker%, flicker index, modulation, dominant frequency, ASSIST Mp and IEEE 1789.
4.3″ touchscreen display with direct access to all important functions.
Display of measured values, time curve and frequency spectrum.
Color corrected spectral sensitivity of the VLP sensor corresponds very closely to the spectral brightness sensitivity of the human eye.
Measurement data can be stored to internal memory in CSV format and read out via USB.
|MAVOPAD Light Flicker Sensor VLP
|Spectral sensitivity||480 … 660 nm|
|Illuminance||1 lx … 20.000 lx, mean,
|Dominant frequency, flicker%,
flicker index, modulation
> 200 lx
|Flicker (frequency weighted)
|PstLM, SVM, ASSIST Mp, IEEE 1789
> 1000 lx
Standard illuminant A at 1000 lx, ε 0°
|PstLM accuracy||per IEC TR 61547-1|
|SVM accuracy||per IEC TR 63158|
|Flicker frequency||50 Hz … 400 kHz|
|Display||4.3“ capacitive TFT touchscreen display|
10% to 100% in steps of 10%
Power saving (minutes)
1 to 10 minutes in 1 minute steps
Power saving (%)
10% to 100% in steps of 10%
|A-D Converter||16-bit, 4-channel, sampling rate up to 1.6 MHz|
|Interface||USB 2.0 with micro B socket|
|Automatic battery monitoring||Battery voltage display|
||Off: 10 to 60 minutes
in 10 minute steps
|Operating time||5 to 20 hours depending on device settings|
|Charging time||3 hours, charge every 6 months
when not in use
|Charging||Via USB socket with 5 V / 1500 mA plug-in
power pack, LED charging indicator
|Operating temperature||5°C … 30°C|
|Storage temperature||0°C … 40°C|
|Relative humidity||10 … 70 % (no condensation)|
|Dimensions||154 mm x 96 mm x 34 mm|
|Subject to technical changes
• Included in the scope of functions
|Scope of delivery
||MAVOPAD, VLP light flicker sensor,
0.8 m sensor extension cord, li-ion battery (built-in),
plug-in power pack, interface cable, touch pen, operating instructions,
plastic carrying case, test certificate