Manualshelf

User Manual

ManualsBrandsTEKTRONIX ManualsLaboratory Test EquipmentDigital 70 MHz 1 null Digital storage (DSO)
51525354555657585960
Setting channel
input parameters
5. To set the position to 0 (center graticule), use the Multipurpo se knob to select and click Set to 0.
The difference be tween vertical position an d vertical offset
Vertical position is a display function that moves the waveform image on the screen. Moving the signal on the screen
does not change the ground (0 volt) baseline level for that signal.
Vertical offset is a signal function that adds a DC voltage to the input signal before the oscilloscope preamplifier. Adding
this DC voltage moves, or offsets, the signal from the ground (0 volts) level. You use offset to increase the effective
dynamic range of a signal.
For example, you can set the vertical offset to m atch the peak area of a signal, use the Vertical Position knob to move
the peak area to the center graticule, and then set the Vertical Scale knob to smaller voltage/division settings to look
at more detail in that waveform peak area.
Setting channel deskew
Deskew co
mpensates for differences in signal delays between different cable lengths or probe types. Use Deskew to
adjust the signal delay for individual channels so that all signals arrive at the oscilloscope at the same time. Deskewing
channels lets you take accurate time-related measurements between two or more channels, or when using a current
probe wi
th a voltage probe.
Select o
ne probe as a reference signal and adjust the deskew values for the other channels so that they all align. For best
results, use a deskew fixture, such as the Tektronix 067-1686-xx.
The following image shows before and after using deskew to set channel 2 and 4 deskew to minimize the delay with channel 1.
1. Push the Vertical Menu button for the
channel input that you want to set.
2. Push the More side-menu button.
3. Use the Multipurpose knob to select and click Deskew.
4. To set a specific deskew delay, use the Mu ltipurpose knob to select and click 0s. Then use the knob to change and set the
value. The w aveform on the screen moves as you adjust the value.
34 TBS2000 Series User Manual