Defining An Averaged Or Enveloped Trace - Tektronix 11801C User Manual

Averaging and Enveloping
Defining an Averaged
or Enveloped Trace
3 14
There are two ways of establishing an averaged or enveloped trace.
1. If you are establishing a new trace, you can use the AVG( or ENV( trace
functions as you define your trace. These can be selected from the Def
Tra menu. For more information on this method, see Trace Definition
and Management on page 3 205.
2. The easiest method is to establish the trace first without averaging or
enveloping. Then, after you have the trace adjusted, you can invoke
averaging or enveloping.
The following procedure describes averaging and enveloping using the
second method described above.
Step 1: Create the trace you want using any method.
If you aren't sure how to define a trace, see Trace Definition and
Management on page 3 205.
Step 2: If the trace isn't selected, touch the trace to select it.
Step 3: To average the trace, press the WAVEFORM button, touch the
Acquire Desc selector in the major menu, and then touch the Average
N selector in the pop up menu. See Figure 3 8.
Step 4: To envelope the trace, press the WAVEFORM button, touch the
Acquire Desc selector in the major menu, and then touch the Envelope
N selector in the pop up menu.
The Vertical Desc selector status, shows that the average or envelope
function is part of the trace expression.
NOTE
Reference