Measuring Waveforms
TDS 500C, TDS 600B, & TDS 700C User Manual
3–131
To adjust both cursors in tracking mode, use the general purpose knob to
move both cursors.
To adjust the distance between cursors in tracking mode, press SELECT to
temporarily suspend cursor tracking. Then use the general purpose knob to
adjust the distance of the solid cursor relative to the dashed cursor. Press
SELECT again to resume tracking.
To change the cursors speed, press SHIFT before turning the general purpose
knob. The cursor moves faster when the SHIFT button is lighted and the display
reads Coarse Knobs in the upper right corner.
You can choose to display vertical bar cursor results in units of time or fre-
quency. If you have Option 5 Video, you can also display the results in terms of
video line number. To choose vertical bar cursor units, do the following step:
Press CURSOR ➞ Time Units (main) ➞ seconds or 1/seconds (Hz) or, with
Option 5, Video Line Number (side).
If you are measuring NTSC signals, you can choose to display vertical readings
in IRE units. If you are trying to measure such a signal, you should have
Option 05 Video Trigger installed as it would be difficult to trigger on composite
video waveforms without Option 05. To switch between IRE and base cursor
units, do the following steps:
1. Press CURSOR ➞ Amplitude Units (main) ➞ IRE (NTSC).
2. To return to normal, press CURSOR ➞ Amplitude Units (main) ➞ Base.
To find instructions for using cursors with math waveforms, see Waveform Math
on page 3–188.
To find instructions on using cursor with FFT waveforms, differentiated
waveforms, and integrated waveforms, see Fast Fourier Transforms on
page 3–191, Waveform Differentiation on page 3–210, and Waveform Integration
on page 3–215.
Select Cursor Speed
Select Time Units
Select Amplitude Units
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