Display Waveform or Trace Data
If you do not have a deskew
fi
xture, you
can use the controls in the Deskew menu to
set the oscilloscope's deskew parameters
to recommended values, based on the
nominal propagation delay of each probe.
The oscilloscope automatically loads the
nominal propagation delay values of TekVPI
and TekProbe II (requires use of a TPA-BNC
adaptor) probes. For other common probes,
fi
rst push
Select
on the side menu, and
select the channel to which the probe is
attached. Then push
Probe Model
on the
side menu, and select the probe model. If
your probe is not in the list, set probe model
to
Other
, and push
Propagation Delay
on
the side menu and dial in its propagation
delay with
Multipurpose a
.
To display the recommended deskew values
calculated by the oscilloscope, set
Show
rec. deskews
on the side menu to
Yes
.
To set the deskew values of each channel
to the recommended values, push
Set all
deskews to recommended values
on the
side menu.
Quick Tips
Using Probes with the TekProbe II and TekVPI Interfaces.
When you attach a probe 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.
Adjust the vertical position to place the waveforms where you
want to see them. The waveform baseline indicators indicate the zero Volts (or Amps) level for each waveform. If you
adjust the channel's Vertical Scale, the waveform expands or contracts around the waveform's baseline indicator.
When you use the Channel<x> >
More
>
Offset
>
Vertical Offset
control to move a waveform, the baseline indicator
no longer represents zero. Instead, it represents the level of the offset. If you adjust the channel's Vertical Scale, the
waveform expands or contracts around the waveform's baseline indicator.
50
Ω
Protection.
If you select 50
Ω
termination, the maximum vertical scale factor is limited to 1 V/div, except that with a
10X probe the scale factor is 10 V. 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 speci
fi
cations in the
MDO3000
Series Oscilloscopes Technical Reference
.
112
MDO3000 Series Oscilloscopes User Manual
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