HP E1725C, Getting Started Manual

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Chapter 4 Demo Waveforms
Demo 1: Data-to-Data
4-4 Getting Started Guide
4
Overview
The drive under test is formatted, so a “start-of-sector” pulse is used to
trigger the TIA once for each sector. The start-of-sector pulse occurs 15
µ
s
prior to the beginning of the data portion of the sector. The data portion of
the sector is 80
µ
s in duration. Eighty consecutive sectors were acquired.
This is the TIA setup menu to make data-to-data measurements on the
drive under test. The screen is configured as a flow diagram showing the
various stages of the measurement. Reading from left-to-right you can see
that the TIA will wait for a trigger, delay 15
µ
s and then measure every
edge for 80
µ
s. This sequence is repeated 80 times, which results in the
acquisition of 80 consecutive sectors.
1 Click on the selection boxes ( ) in the flow diagram to see the variety of
possible triggering and acquisition selections.
NOTE Whenever you save data, the setup information is automatically saved as
well. When the data is later recalled, so is the setup. This allows you to see
all of the conditions that were used when the data was originally acquired.