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Date of this version: 16 August 2007
All VueMetrix controllers detect several conditions that may endanger the safety of the laser diode or the controller itself. When this condition occurs the laser is disabled. The controller, when queried with the f? (fault?) command, responds with an integer value that represents the specific fault that caused the shutdown.
When the controller is operating normally the f? command returns 0. A non-zero return indicates the presence of a fault condition, and under all circumstances the laser is disabled. The laser remains disabled until the command "cf" (clear fault) is sent to the controller. The "l1" (laser on) command will not clear the fault.
WinVue continually polls the controller and indicates the presence of a fault with a red banner near the upper right hand corner of the program window. The laser cannot be turned on until the Clear Fault button is pressed.
The mapping of fault codes to conditions varies from one product to another, and is documented in section 3.
Indicates a failure of the internal analog to digital converter. Report this fault to VueMetrix and return the controller for factory repair.
Indicates a problem with internal controller circuitry.
The controller's on-board CPU chip has reported an over-temperature condition. Check for proper cooling of the controller.
The measured current through the laser diode is not within tolerance. Report this fault to VueMetrix.
The DiodeGaurd circuitry unexpectedly failed to reach its operating point, indicating a possible intermittent connection between the laser diode and the controller.
The TEC driving circuit has reported a fault condition. Report this to VueMetrix.
The TEC driving circuit has reported a fault condition. Report this to VueMetrix.
The input power supply voltage is higher than the controller's allowed operating limit.
The input power supply voltage is lower than the controller's allowed operating limit.
The controller's interlock safety circuit is open.
The controller's key switch is in the off position.
The laser temperature sensor reported a reading indicating that the laser is too hot.
The voltage across the laser diode exceeds the controller's specification. This can be caused by an open in the laser output circuit.
The laser temperature sensor reported a reading indicating that the laser is too cold. Condensation on optical surfaces may occur under these conditions.
The voltage across the laser diode is less than the controller's specification. This can be caused by a short in the laser output circuit.
The light loop (constant power regulation) is enabled, the controller is producing the maximum allowed output current, and the desired light power cannot be achieved.
The total output power to the laser (current times voltage) exceeds the controller's specification.
An internal fault. Report this fault to VueMetrix and return the controller for factory repair.
An internal fault. Report this fault to VueMetrix and return the controller for factory repair.
A temperature servo has reported a fault condition. Commands are available to determine further information (see product-specific command lists).