Operation
Controls, LEDs, and ports on the front panel
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| Redundant Switch |
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| APC recommends the factory default settings | |||
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| among the settings shown below. | |||
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| Function |
| LED Display | Description | |||
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| Source A |
| Bright= Normal |
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| Sensitivity |
| Dim (the factory | Sets transfer | |||
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| sensitivity to line | ||
| Source B |
| default) = Reduced | ||||
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| Sensitivity |
| Off = low |
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| Bright = Source A |
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| Source |
| (the factory default) | Selects the preferred | |||
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| Preference |
| Dim = Source B | AC source | |||
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| Off = none |
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| Source A |
| Bright = Narrow |
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| Xfer |
| Sets the transfer | ||||
| Voltage |
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| Dim = Medium (the | voltage window (the | ||||
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| Source B |
| factory default | range of acceptable | |||
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| voltage) | ||||
| Xfer |
| Off = Wide | ||||
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| Voltage |
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APC Redundant Switch: Installation and Operation Manual | 15 |