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US 7,397,266 B2Granted
System and method for testing the electromagnetic susceptibility of an electronic display unit
AssigneeAmber Precision Instuments, Inc
InventorDavid J. Pommerenke
Life of this patent
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Abstract
A system and method for testing the electromagnetic (EM) susceptibility of an electronic display unit monitors the light emitted from the electronic display unit as EM noise is applied at a particular testing location of the electronic display unit. An error in the electronic display unit caused by the EM noise is detected using an electrical signal generated in response to the light from the electronic display unit.
Claims19
An electromagnetic testing system comprising:
- a probe configured to generate electromagnetic noise in response to a drive signal;
- a probe positioning mechanism configured to move said probe to different testing locations of an electronic display unit;
- a noise generator electrically connected to said probe to generate said drive signal;
- an optical detector positioned to monitor light emitted from said electronic display unit, said optical detector being configured to generate an electrical signal in response to said light from said electronic display unit;
- a fault detection circuit connected to said optical detector to process said electrical signal, said fault detection circuit being configured to generate an output signal in response to changes of said electrical signal;
- and
- a processing device connected to said fault detection circuit to receive said output signal, said processing device being configured to detect an error in said electronic display unit caused by said electromagnetic noise using said output signal.
4 more elements
A method for testing the electromagnetic susceptibility of an electronic display unit, said method comprising:
- activating said electronic display unit such that said electronic display unit emits light;
- positioning a probe over a testing location of said electronic display unit;
- applying electromagnetic noise at said testing location of said electronic display unit using said probe;
- monitoring said light emitted from said electronic display unit, including generating an electrical signal in response to said light from said electronic display unit as said electromagnetic noise is applied to said electronic display unit;
- and
- detecting an error in said electronic display unit caused by said electromagnetic noise using said electrical signal.
3 more elements
Dependencies are inferred from the claim text.