Tektronix 071-0957-03, User Manual

Page: 59 / 254

Application Examples
TDS3000B Series User Manual
2- 7
Setting Reference Levels. To set the reference levels to specific
voltages, do these steps:
1. Push the Reference Levels screen button.
2. Push the Set Levels in screen button to select units .
3. Push the High Ref screen button.
4.
Use the general purpose knob to select
2.0 V
.
5. Push the Low Ref screen button.
6. Use the general purpose knob to select 800 mV .
The measurement verifies that the transition time (3.842 ns) meets
the specification (
≤
10 ns).
Measuring Specific Events. Next you want to see the pulses in the
incoming digital signal, but the pulse widths vary so it is hard to
establish a stable trigger. To look at a snapshot of the digital signal,
do this step:
1. Push the SINGLE SEQ button to capture a single acquisition.