Display Waveform Data
Quick Tips
Using Probes with the TekProbe II and TekVPI Interfaces. When you attach a pro be with the TekProbe II or the TekVPI
interface, the oscilloscope sets the channel sensitivity, coupling, and termination resistance automatically to match the probe
requirements. Tek Probe II probes require use of the TPA-BNC Adapter.
The Difference Between Vertical Position and Offset. Vertical p osition is a display function. Adjust the vertical position to
place the waveforms where you want to see them. The waveform baseline location s track adjustments made to their positions.
When you adjust vertical offset, you see a similar effect, but it is actually quite different. Vertical offset is applied before the
oscilloscope preamplifier and can be used to increase the effective dynamic range of the inputs. For example, you can use
vertical offset to look at small variations in a large DC voltage. Set the vertical offset to match the nominal DC voltage and
the signal appears in the center of the screen.
50 Ω Protection. If you select 50 Ω termination, the maximum vertical scale factor is limited to 1 V/div. If you apply excessive
input voltage, the oscilloscope automatically switches to 1 M Ω termination to protect the internal 50 Ω termination. For more
details, refer to the specifications in the DPO4000 Technical Reference.
128 DPO4000 Series User Manual
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