To Use Waveform Generator Logic Presets - Agilent Technologies InfiniiVision 3000 X-Series User Manual

17
Waveform Generator
2 In the Waveform Generator Menu, press the Settings softkey.
3 In the Waveform Generator Settings Menu, press the Out Load softkey
The output impedance of the Gen Out BNC is fixed at 50 ohms. However,
the output load selection lets the waveform generator display the correct
amplitude and offset levels for the expected output load.
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
2 In the Waveform Generator Menu, press the Settings softkey.
3 In the Waveform Generator Settings Menu, press the Logic Presets
4 In the Waveform Generator Logic Level Presets Menu, press one of the
Softkey (logic levels)
TTL
CMOS (5.0V)
CMOS (3.3V)
CMOS (2.5V)
ECL
268
and turn the Entry knob to select:
50
•
High-Z
•
oscilloscope's softkeys, press the [Wave Gen] key.
softkey.
softkeys to set the generated signal's Low and High voltages to logic
compatible levels:
Low level
0 V
0 V
0 V
0 V
-1.7 V
High level, 50 ohm
expected output load
+2.5 V (TTL compatible)
Not Available
+2.5 V (CMOS
compatible)
+2.5 V
-0.8 V (ECL compatible)
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
High level, high-Z
expected output load
+5 V
+5 V
+3.3 V
+2.5 V
-0.9 V