Cisco D9854 Installation And Operation Manual page 179

Viewing the Input Status,
The following table indicates the current signal lock status for the selected RF input:
Locked
Lock+Sig
No Lock
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Status
Indicates the receiver is locked to a carrier with no
valid content.
Indicates the receiver is locked to a carrier with
valid content.
Indicates the receiver is not locked to a carrier.
Description
5-15