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Popcorn Noise Test using E5041A
Overview
The Agilent E5041A is a dual counter module designed to detect and count the number of
noise spikes in the read head. This measurement is used to measure the head noise called
popcorn noise, which occurs shortly after the write operation.
Measurement
1. To open the Popcorn Noise Counter menu, click on the [Popcorn Noise Counter] button
Procedure
from the main popcorn noise menu
Figure 3-105
Popcorn Noise Counter Menu
Abort
2. Set the parameters, click on each button to enter a new value.
Channel Bit Rate
Write Current
Sense Bias
Test Counts
Threshold
Write Time
Chapter 3
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VEE Measurement Program Operation
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 test counts. The
setting range is 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].
Specifies the time to write the data. This
parameter is expressed in terms of [µsec].
Measurement
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