Phosphor protect activates instantly upon any critical circuit failure in the ESCP-2000 and 3000 or upon the loss of a proper IG input signal. Diagnostic reports are available from the DCPC and can be viewed on the terminal or any PC connected through the NT server. CRT beam current limiting protects the CRT from excessive power dissipation. Failure of any fan will not cause permanent damage. Power supply or main ac line power loss will not cause permanent damage.
All power supplies are over-current protected.
An advanced phosphor-protect scheme is based on energy dissipation per unit area of the phosphor.