Key Digital KD-Pro4x1X Operating Instructions Manual page 14

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Forced HPD Troubleshooting Tool
When ON, Hot Plug Detection voltage is fixed on to the connected display
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Standard HPD behavior when set to OFF position
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Auto Sensing
ON » Unit will automatically select a newly detected active source. If current source is disconnected
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or becomes inactive, auto sensing will sequentially advance to an active input/source
OFF » Unit is in normal mode and regular switching functionality will occur
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IF Auto sensing has been set via any method other than the front toggle switch, it will be
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automatically disabled when the KD-Pro2x1X/4x1X is manually controlled by the front panel button, IR,
RS-232, TCP/IP, or USB control. If fixed Auto Sensing is required, please set via the front toggle switch
IR Sensor
Used to collect line-of-sight IR from remote control
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Receives signals from a 90° angle at up to 30ft away.
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Mount an IR emitter from Compass Control Pro or to control by another professional control system
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