Acquire the Signal
4. Push Thresholds.
Bus
Parallel
Define
Inputs
Thresholds B1 Label
Parallel
Bus Display Event Table
You can set the threshold for all channels in the
parallel or serial bus from a list of preset values.
The values are based on common types of
integrated circuits. The preset values are:
1.4 V for TTL
2.5 V for 5.0 V CMOS
1.65 V for 3.3 V CMOS
1.25 V for 2.5 V CMOS
-1.3 V for ECL
3.7 V for PECL
0V
Alternately, you can set the threshold to a
specific value for the signals that makes up the
parallel or serial bus. To do so, push the Select
side-bezel button and turn multipurpose knob
a to select a Bit or a Channel number (Signal
name).
96 DPO2000 and MSO2000 Series Oscilloscopes User Manual
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