The Cursor menu controls what functionality the left mouse button has when the user performs measurements against waveforms. Checking any of the menu items will enable that particular function.
"Cursor" Menu
The scope of the measurement is determined by:
1. When a single cursor is placed on a waveform, the function is performed across the entire X axis of the waveform.
2. When two cursors are placed on a waveform, the function is performed between the cursors.
3. Under the "Settings" menu set the check box to always measure across the entire X axis of the waveform.
Under the "Settings" menu set the thresholds used when doing rise-time and fall-time measurements.
1. When a measurement takes place and "relative" is specified, the maximum and minimum are found within the scope of the waveform (defined in the previous list). The thresholds are now calculated followed by the time difference between the two points at which the waveform passes through the thresholds.
2. When a measurement takes place and "absolute” is specified, the time difference is calculated between the two points at which the waveform passes through the "absolute" thresholds
Time Domain Cursor Functions
| Function | Description |
| Duty Cycle | The time difference from the high threshold of a rising edge to the high threshold of the next falling edge, divided by the period. |
| Fall | Going from Xlow to Xhigh, the first fall time which meets the threshold criteria is measured. |
| Integrate | The area under the waveform. |
| Maximum Value | The maximum value of the waveform. |
| Minimum Value | The minimum value of the waveform. |
| Peak-Peak | The difference between the maximum and minimum values. |
| Period | The time difference as measured from the 50% points of 2 edges. The 50% point is midway between the high threshold and low threshold. |
| Rise | Going from Xlow to Xhigh, the first rise time which meets the threshold criteria is measured. |
| RMS | The Root-Mean-Square of the waveform. |
| Values | The default operation, causes the (X1,Y1), (X2,Y2), DX and DY to be measured. |
Frequency Domain Cursor Functions
| Function | Description |
| Unity Gain BW | The band-width of the waveform measured at the point where the gain is "1". |
| Phase Margin | Phase margin is measured at the unity gain frequency minus 90 degrees. |
| DC Gain | The DC gain is the gain measured at the waveform's lowest frequency. |
| BandWidth (LPF) | The bandwidth of a low-pass filter is measured at the 3dB points. The "3dB point’s" is defined as the frequency at which the gain’s are 3dB lower than the gain at the waveform's lowest frequency. |
| BandWidth (BPF) | The bandstop of a band-pass filter is measured at the 3dB points. The "3dB points" is defined as the frequency at which the gain’s are 3dB lower than the gain at the waveform's maximum gain. |
| BandWidth (HPF) | The bandstop of a high-pass filter is measured at the 3dB points. The "3dB points" is defined as the frequency at which the gain’s are 3dB lower than the gain at the waveform's highest frequency. |