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Measurement Definition
Drive Setup/Control
Drive Setup/Control
This section explains how the spindle and head are setup and controlled. The setup
specifies the necessary parameters to be set until the drive is on (i.e. the spindle is running
and the head is loaded). Control, on the other hand specifies the parameters after the drive
is on (i.e. moving the head to the track to be tested).
Drive Setup
A drive setup is done to configure the drive: the HGA dimensions and Agilent cassette
number. In the drive setup, a proper configuration and area restriction for the HGA and
Agilent cassette must be established in order to avoid contact with the spindle. This setup
needs to be done before the drive is on.
Drive Configuration
Although the spinstand adopts an X-Y stage, the Agilent E5022/E5023 simulates the real
drive by changing the head position and head skew angle depending on the specified track
number. Parameters are required to achieve this simulation and Agilent E5022/E5023
provides two ways to achieve this.
1. The first way is to specify the dimensions of the spindle center, pivot and reference
point. Refer to Figure 5-59 on page 313 for the reference point. In programming
function, these dimensions are set by the "hpe5022_driveConfigPivot" function. The
required parameters are shown in Figure 5-56.
Figure 5-56
Drive Configuration Parameters (Pivot, Spindle Center, Reference Point)
2. The second way is to specify the head radius and its head skew angle within the limits
of the data area. This parameters can be specified by the
"hpe5022_driveConfigSkewAngle" function. Required parameters are shown in Figure
5-57.
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Chapter 5
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