Waveform Generator 19
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide 313
If the actual load impedance is different than the selected value, the displayed
amplitude and offset levels will be incorrect.
To use waveform generator logic presets
With logic level presets, you can easily set the output voltage to TTL, CMOS
(5.0V), CMOS (3.3V), CMOS (2.5V), or ECL compatible Low and High levels.
1 If the Waveform Generator Menu is not currently displayed on the
oscilloscope's softkeys, press the [Wave Gen] key.
2 In the Waveform Generator Menu, press the Settings softkey.
3 In the Waveform Generator Settings Menu, press the Logic Presets softkey.
4 In the Waveform Generator Logic Level Presets Menu, press one of the softkeys
to set the generated signal's Low and High voltages to logic compatible levels:
To add noise to the waveform generator output
1 If the Waveform Generator Menu is not currently displayed on the
oscilloscope's softkeys, press the [Wave Gen] key.
2 In the Waveform Generator Menu, press the Settings softkey.
3 In the Waveform Generator Settings Menu, press the Add Noise softkey and turn
the Entry knob to select the amount of white noise to add to the waveform
generator output.
Softkey (logic levels) Low level High level
TTL 0 V +5 V (or a TTL-compatible
high level if +5 V cannot
be reached)
CMOS (5.0V) 0V +5V
CMOS (3.3V) 0 V +3.3 V
CMOS (2.5V) 0 V +2.5 V
ECL -1.7 V -0.9 V
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