The design of the CT scanner uses an equal potential grounding system. All components within
the system are provided power on a common ground, so all the components are suitable for use
in the patient environment. Three primary grounding points exist, they include:
•
A system power ground point located in the NGPDU.
•
A reference ground point located between the gantry and the table base.
•
A protective earth ground points located at the rear of the gantry for accessory use.
ALL patient-accessible metal surfaces are grounded to the same potential as the A1
Disconnect.
Power Indicator Light Locations
Component Indicator Light Location
Gantry Indicator Locations: Gantry control buttons backlight, Gantry indicator/regulatory display and service panel
120VAC LED.
System ON: gantry control panel backlighting, service panel 120VAC LED will be lit and Indicator display/
regulatory will display table vertical position.
Shutdown: On the Indicator display the crescent moon will be statically lit (no flashing).
Power Distribution
Unit
Indicator Location: PDU light at the front.
System ON: The light indicator will be ON.
Shutdown: The light indicator will be ON.
Scanner Desktop Indicator Locations: Monitors Power ON/OFF buttons lights, Scanner Desktop/NIO Cabinet power on/off
light located at the front.
System ON: The light indicators will be ON.
Shutdown: The light indicators will be ON.
Scan Control Inter‐
face
Indicator: Standby Button Light.
System ON: The button light will be ON.
Shutdown: The button light will be flashing.
System Cabinet (Im‐
age Generation)
Indicators: System Cabinet provides a green light to the service personal to indicate is energized. SDA
computer and disks and Image Generation computer front panel Power ON/OFF lights.
System ON: The light indicators will be ON.
Shutdown: The light indicators will be ON.
System On light Indicator: Optional light, customer provided, it indicates that the PDU is energized (A1 breaker is ON).
System ON: System On light On.
Shutdown: System On light On.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
Chapter 3 Safety 67
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