*Assuming 10mm per tachometer pulse
Download the WinDaq/Tach Manuals:
Waveform Recording with WinDaq/Tach (PDF)
Waveform Playback and Analysis using WinDaq/Tach (PDF)
In WinDaq/Pro, WinDaq/Pro+, and WinDaq/Lite software, the X-axis of WinDaq data acquisition is incremented based on time. In WinDaq/Tach, the X-axis is incremented based on distance. The software was developed specifically for rail inspection applications where there is a need to precisely locate faults in train rails as part of routine and on-going maintenance, and it can also be used for pipeline inspection, extrusion inspection or any other kind of application that requires locating events in a linear environment.
To make these inspections, WinDaq/Tach uses two digital line of the DI-720-USB or DI-730-USB: one for detecting forward/backward direction and the other for detecting distance. Both are assumed to be TTL compatible signals. The distance signal is further assumed to be a pulse train (tachometer) whose frequency is directly proportional to speed. By combining the information from these two sources along with acquired analog information, any anomaly detected on an analog waveform and subsequently stored to disk may be correlated with a precise location during playback.
Double-click and enter the channels you want to acquire into the WinDaq scan list. Click to select gain, signal averaging, and peak or valley detection per channel. Click to define a single to 32-channel display, either triggered sweep (oscilloscope-like), or scrolling (chart recorder-like). Click again to define a sample rate ranging from less than one to 250,000 per second. With WinDaq/Pro+, you can even define different sample rates on a per channel basis.
Define a calibration per channel to display waveform values in meaningful units such as psi, °F or °C, amps, rpm, watts, horsepower — any unit of measure you need.
Choose the continuous waveform recording mode, or the triggered mode with selectable trigger level, slope and pre- and post-trigger times. WinDaq automatically time- and date-stamps, then streams acquired data to disk -- record as much data as you need. At the same time, WinDaq supplies a real-time graphical display of any or all channels so you always know where you are and where you're going. WinDaq allows you to record to disk up to 240 channels, and display up to any 32 at the same time.
Of course, you can label any channel with text that describes it — "Motor 1," "Engine Speed," "Vertical Position," etc. But WinDaq also allows you to supply commented event markers while you record - "Beginning test phase 1," "Small vibrations noticed," "Starting cool-down cycle," etc. Your comments and our acquired data combine to form a complete diary of your data acquisition session.
Recording is only half the solution. The included WinDaq Waveform Browser playback software allows you to graphically manipulate waveforms in ways you've never seen on a PC. Compress an entire recording to one screen width for a bird's eye view, then expand around an area of interest for a closer look. Use cursors to measure amplitudes and timing with computer-precision. Move to any event marker with the click of a mouse button.
Double your productivity and let WinDaq record while you review last week's results from your spreadsheet, or compose a memo with your word processor. You can even playback data already stored to disk while you're still recording.
Waveform interpretation is easy with our built-in analysis functions. Apply frequency and filtering analysis with the WinDaq Waveform Browser FFT and DFT functions. Or analyze any range of waveform data with its statistics function. Use X-Y plotting to examine the relationship of one channel to another. Extended analysis functions allow waveform peak detection, integration, differentiation, arithmetic operations, and more.
The WinDaq Waveform Browser can export any range of data to your spreadsheet, or any other analysis or presentation package you use. You can even copy a graphical image displayed by the WinDaq Waveform Browser and paste it directly into a word processing document. Finally, export any range of waveform graphics to your printer for a hard copy record.
From 1 to 32 channels. Smooth scrolling or triggered sweep with level, slope and source selections. Zero plot delay for true real time performance. Active to over 80,000 samples per second and during waveform recording to disk. Control plot speed independently of sample rate.
WinDaq/Tach provides a toolbox of icons that are used to customize and setup a recording session. The icons, when selected, provide an easy way to set variable parameters such a sample rate, channel settings, display mode, etc.
Creates data files limited in length only by the size of your disk.
Scales each waveform display channel in its own unit of measure.
Review and analyze your recorded data with WinDaq Waveform Browser, our playback and analysis software included free with WinDaq/Pro or WinDaq/Pro+. This software provides full support for the Windows enhanced mode so you have complete multitasking capability. You can literally record to and analyze data from the same file at the same time.