Motorola DCT5100 User Manual page 16

DCT5100 User Guide
The DCT5100 may be equipped with an optional RF Bypass switch.
When the optional RF bypass switch is activated, it routes the cable
signal directly to a cable-ready TV, bypassing the DCT5100. This
configuration enables you to view clear analog programming on the
direct cable signal should the DCT5100 be powered off.
The RF bypass is not available on all cable systems.
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