True Zoom lets you zoom in on a specific piece of data and collect a high resolution 800-line spectral plot over a narrow frequency band. True Zoom is similar to a zoom lens on a camera.
- Create a job or open Analyze from a route measurement point.
- From the Analyze main menu, press .
- Use the up and down arrow keys to select True Zoom.
The Analyze Setup screen appears.
Set the following options as necessary.
Option Description F2 Set Zoom Params Set the center frequency, which is the frequency of interest, the resolution in Hz or CPM, and the bandwidth. The Resolution and Bandwidth fields work together. Changing one affects both parameters. For example, if center frequency is 10, 000 Hz, resolution is 0.125Hz/line, and bandwidth is100Hz, the zoom window would be 9,950 - 10,050Hz. The default is 10,000 Hz for center frequency, 0.125 Hz for resolution, and 100 Hz for bandwidth. F4 Set Average Count Enter the number of averages you want to use to compile your plot. The default is 4. F5 Set Window Set the type of window to use. See Windows. F7 Tach Setup Set up the tachometer parameters. See Set up a tachometer in Analyze. F9 Set Trigger Enable or disable the tach trigger. The trigger is disabled by default. See Triggers. F12 Input Setup Set up the input channels, the sensor type, and the units for the acquisition type.
Enter to collect the data.
One or more plots display the data.
- Press F9 Store Data to save the data to a route or a job, or press F8 Start to redo the measurement.