TDSDDM1 Disk Drive Measurement Application User Manual
1–7
Configuration
This section describes configuration tasks that you should perform before you
start taking measurements. For the most part, these tasks configure the oscillo-
scope and Disk Drive Measurement Application to correctly acquire the signals
from the disk drive under test. Additional setup parameters, concerned more with
configuring specific measurements, are located in the Setup Parameters section
beginning on page 3–5.
Setting Up the Oscilloscope Trigger
Before starting measurements, you must manually set up the trigger, as described
in the following procedure:
1. Connect the Index, Sector, and Read signals to channels 4, 3, and 1
respectively.
2. Set the oscilloscope to the desired sample rate using the horizontal SCALE
knob. (The sample rate is usually 500 MS/s, or 1, 2, or 4 GS/s.)
3. Set the time interval:
a. Fit the waveform to the screen by pressing HORIZONTAL MENU
➞
Record Length (main)
➞
Fit to Screen (side). Select ON.
b. In the same menu, select a record length appropriate to the signal under
test.
4. Set up the trigger:
a. Set the trigger coupling to DC by pressing Coupling (main)
➞
DC
(side).
b. Set the slope by pressing Slope (main) and then selecting positive or
negative slope (side). (Select the slope appropriate to your disk drive
signal.)
c.
Set the mode to Normal by pressing Mode & Holdoff (main)
➞
Normal
(side).
d. Set the level by pressing Level (main) and then selecting a level
appropriate to your signal.
Summary of Contents for TDSDDM1
Page 4: ......
Page 10: ...Table of Contents vi TDSDDM1 Disk Drive Measurement Application User Manual ...
Page 13: ...Getting Started ...
Page 14: ......
Page 27: ...Operating Basics ...
Page 28: ......
Page 41: ...Reference ...
Page 42: ......
Page 46: ...Menu Structure 3 4 TDSDDM1 Disk Drive Measurement Application User Manual ...
Page 86: ...Measurement Descriptions 3 44 TDSDDM1 Disk Drive Measurement Application User Manual ...
Page 91: ...Appendices ...
Page 92: ......
Page 94: ...Appendix A Specifications A 2 TDSDDM1 Disk Drive Measurement Application User Manual ...
Page 95: ...Index ...
Page 96: ......
Page 100: ...Index Index 4 TDSDDM1 Disk Drive Measurement Application User Manual ...
Page 101: ......
Page 102: ......