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Each of the scan control (touch) panel switch decoder board light bars (DS1through DS8) consists
of four yellow LEDs in series. Each light bar corresponds to a panel button. When a function
controlled by a button is active, the corresponding light bar illuminates a translucent area beside
the button.
Sensor shutter status satellite box
The shutter status satellite box indicates whether the shutters for radioactive and X-ray sources are
open or closed and whether power is supplied to the X-ray source. The shutter status satellite box
is bi-directional as it has indicator panels on both the outside surface and on the surface facing the
heads. A second Shutter status satellite box is also located on the cable end support.
Status label
SHUTTER OPEN
(Red light is on.)
SHUTTER CLOSED
(Green light is on.)
Figure 4 Switch decoder board for Scan Control Panel
Description
Indicates that the shutter for the isotope source (basis
weight) is open
Indicates that the shutter for the isotope source (basis
weight) is closed.
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