VR-24 : Real-time analysis viewer RTA-VU
RTA-VU is a simple to use real-time analysis viewer for the VR24 data recorder. While the VR24 is recording data in the background, RTA-VU displays the incomming data in several modes. It allows various trigger options. Eight cursors and advanced zoom methods are supported. Any calculation, display setting or number of views can be altered in real time. RTA-VU uses a simple human interface (optimized for touch panels) without nested dialogs. In nearly all cases RTA-VU uses one button for one function. Up to two diagrams with selectable functionality are available.
This embraces
- Time diagram
- Frequency spectrum
- Power spectrum and power spectral density
- Frequency Response Function
- Cross Spectrum and cross spectral density
- Auto Correlation
- Cross Correlation
- Spectrogram
- Sound (1/N Octave Analysis, LP, LEQ )
- Digital Multimeter for numeric display
RTA-VU video tutorials
First steps into RTA-VU
Loading and saving configurations
Zooming
Loading and saving configurations
Using auto trigger
Using manual trigger
Using FFT (Fast Frequency Transform)
Using PSD (Power Spectrum [Density])
Using FRF (Frequency Response Function)
Setting reference for logarithmic
Using COH (Coherence)
Using CCR (Cross Correlation)
Using ACR (Auto correlation)
Using the spectrogram
Using sound analysis
Using the digital multimeter
Specification
Real-time display
| Diagram type | Time diagram / FFT / Power spectrum or Power spectrum density / Frequency response function / Coherence / Auto correlation / Cross correlation / FFT spectrogram / Octave analysis / Digital multimeter |
| Number of display | 1 / 2 |
| Display update | Single / Continuous |
FFT setup
| Number of line | 16 - 65536 (increments of a power of 2) |
| Averaging | 1 - 128 (increments of a power of 2) |
| Overlapping | Between 0 and 75% of FFT the data points (in 25% steps) |
| Window function | Rectangle / Bartlett / Hanning / Hamming / Blackman / Flat Top / Low Sidelobe |
Time diagram
| Channel | Max. 4ch (Analog channel only), selectable |
| Coupling | DC / AC |
| Trigger | Non / Auto / Level, define the pre trigger value between 0 - 100% (in 10% steps) of the display area. |
FFT / Power spectrum (Density)
| Channel | Max. 4ch (Analog channel only), selectable |
| Y-Axis | RMS / Peak (only FFT) / dB |
| Averaging | Linear / Peak hold |
| 3D Display | Available |
Frequency response function
| Channel | One pair (Analog channel) selectable. |
| Y-Axis | Linear / dB |
| Calculation methods | H0 / H1 / H2 |
Cross spectrum / Coherence / Cross correlation
| Channel | One pair (Analog channel) selectable. |
Autocorrelation / Spectrogram
| Channel | Max. 4ch (Analog channel only), selectable |
Octave analysis
| Channel | Max. 4ch (Analog channel only), selectable |
| Band width | 1/1, 1/3 |
| Weighting | None / A / C |
| Time weighting | Slow / Fast / 35 msec |
| Display | L, Leq |
Digital Multimeter
| Channel | Max. 4ch (Analog channel only), selectable |
| Integration times | 0.3 / 1 / 3 seconds |
| Display value | Last value (no calculation) / Mean / RMS / Max / Min |
*This software only provides display function of analysis or calculation results. Values and diagrams are not stored.