304
Trigger status from
acquisitions readout
2
To quickly determine the settings of some key trigger
parameters, check the Trigger readout at the bottom of the
display. The readouts differ for edge and the advanced
triggers.
Trigger level on display
3
To see the trigger level on the waveform display, turn on a
trigger level indicator (marker). See Trigger Level Marker on
page 144 for instructions on setting the indicator.
The trigger level indicator remains on the screen as long as the
channel providing the trigger source is displayed. You can choose
between two types of trigger level indicators: a horizontal bar and
an arrow at the right side of the graticule.
Triggering from the Trigger Setup Window
Some trigger parameters are accessible only through the Trigger Setup control window:
Holdoff
Trigger level presets
Force trigger
Use the procedures that follow to set up these trigger parameters.
Set holdoff
Changing the holdoff time helps to stabilize triggering. To set
holdoff:
1.
Push the front-panel ADVANCED button.
2.
On the Trigger Setup control window, select the Mode tab.
3.
Click Default or Time:
Default uses the instrument default holdoff time, which is
five times the current horizontal scale setting. Default
maintains a good value for general-purpose triggering.
Time enables you to enter a holdoff that may allow more
stable triggering. This time is used at all horizontal scale
settings.
4.
If using Time, click Trig Holdoff and enter the time value
using the multipurpose knob. The holdoff range is 1.5 s
to 12 seconds.
Select a preset trigger
level
5.
Push the front-panel ADVANCED button.
6.
On the Trigger Setup control window, select the A Event
tab.
Summary of Contents for TDS5000B Series
Page 36: ...36 AFTDS Differential Signal Adapter...
Page 280: ...280 Blackman Harris window...
