Tektronix TDSDDM1, User Manual, Page: 51 / 102

Setup Parameters
TDSDDM1 Disk Drive Measurement Application User Manual
3–9
Localizing Measurements: an Alternate Method
There is another way to control the amount of data to measure without using
gated cursors or specifying a range of sectors. You can do this by adjusting the
Preamble Duration in the application Sector menu and the Record Length or
Horizontal Scale in the oscilloscope horizontal menu. By specifying both the
starting point and the total length of the measurement in this way, you can
effectively size the area of interest.
Adding Pass/Fail Results to Measurement Data
You can add a pass/fail test result to the measurement data, based on whether the
data falls within specified limits. See Figure 3–5 for an example.
Figure 3–5: Limit Test results
Use the Limit Test menu to set upper and lower limits to be used by the
measurements. See Figure 3–6.
To include Limit Test results, do the following:
1. Select a measurement from the Measure menu (main).
2. Press –menu– (main)
➞
Limit Test (main)
➞
On/Off (side). Select ON. See
Figure 3–6.
3. Set the upper and lower limits for the measurement.
4. Repeat steps 1 and 3 for each measurement.