InFocus TD61, User Manual

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Diagnostics: Ballast
Fault. If a fault condition occurs, the lamp will
shut down. However you will be able to query the
ballast via RS232 to obtain the fault condition.
There are 9 fault conditions:
• None
• Lamp over voltage
• Mains over voltage
• Temp too high
• Asymmetry detected (voltage waveform to
the lamp is asymmetrical)
• Lamp under voltage
• Mains under voltage
• NTC defective (temperature sensor for the
ballast electronics)
• Sync frequency outside limits
Voltage. Plateau voltage to the lamp
Temperature Zone. There are 7 temperature
zones reported by the ballast:
• 1 Driver shut down
• 2 Temperature out of spec
• 3 Temperature critical
• 4-7 Temperature ok
Pulse/Plateau Ratio. Current to the lamp consists
of alternating negative and positive plateau’s,
each followed by a pulse.
Software Version. Version of firmware embedded
in the ballast. Not to be confused with the firm-
ware version of the TD61.
Status. Can be queried via RS232 should the
lamp be off.
Ballast menu provides information only. You cannot
change anything from this menu.
Ballast Not Communicating. If the ballast stops
communicating with the electronics module, the
ballast menu will change as shown. The electron-
ics module will lose all control of the ballast and
the ballast voltage will go to maximum. At maxi-
mum voltage, the lamp life is significantly short-
ened.
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