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VEE Measurement Program Operation
Measurement
Popcorn Noise Test
Popcorn Noise Test when using E5038A/B
Overview
This section describes the Popcorn Noise Measurement. This measurement allows you to
analyze the head noise after write operation. Popcorn noise is detected when it exceeds a
specified level (threshold level) at a specified time.
Measurement
1. To open the Popcorn Noise menu, click on the [Popcorn Noise] button.
Procedure
Figure 3-103
Popcorn Noise Menu
2. Set the parameters, click on each button to enter a new value.
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Abort
Channel Bit Rate
Write Current
Sense Bias
Test Counts
Threshold
Aborts unexpected long measurements.
Specifies the speed at which data bits are
written on the media per second [bps].
Specifies the current applied to the write head.
Specifies the current applied to the read head.
Specifies the number of counts for popcorn
noise. This parameter can be set from 1 (min)
to 1,000,000 (max).
Specifies the threshold level as the limit to
detect popcorn noise. Popcorn noise is
detected when it reaches this level.This
parameter is expressed in volts [V].
Chapter 3
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