Tektronix TDS2000C series User Manual page 123

Pulse Width Trigger
Trigger Frequency Readout
Key Points
TDS2000C and TDS1000C-EDU Series Oscilloscope User Manual
Use Pulse Width triggering to trigger on normal or aberrant pulses.
Options Settings
Pulse
Source CH1, CH2, CH3
Ext, Ext/5
When =, ≠, <, >
Pulse Width 33 ns to 10.0 sec
Polarity Positive, Negative
Mode Auto, Normal
Coupling AC, DC, Noise Reject, HF
Reject, LF Reject
More
1
Available only on a 4-channel oscilloscope.
The oscilloscope counts the rate at which trigger events occur to determine trigger
frequency and displays the frequency in the lower right corner of the screen.
Trigger When. The pulse width of the source must be ≥5 ns for the oscilloscope to
detect the pulse.
When options Details
=
Triggers the oscilloscope when the signal pulse width is equal to or
not equal to the specified pulse width within a ± 5% tolerance
≠
<
Triggers the oscilloscope when the source signal pulse width is less
than or greater than the specified pulse width
>
Comments
With Pulse highlighted, triggering
occurs on pulses that meet the trigger
condition defined by the Source,
When, and Set Pulse Width options
1 , CH 4 1 , Select the input source as the trigger
signal
Select how to compare the trigger
pulse relative to the value selected in
the Pulse Width option
Use the multipurpose knob to set a
width
Select to trigger on positive or
negative pulses
Select the type of triggering; Normal
mode is best for most Pulse Width
trigger applications
Selects the components of the trigger
signal applied to the trigger circuitry;
(See page 96, Edge Trigger.)
Use to switch between submenu
pages
Reference
99