Or, you can setup your output signal such that remains valid while SecureSync in holdover
mode, but not in free run.
The available options are:
I.
Output Always Enabled—The output is present, even if SecureSync is not syn-
chronized to its references (SecureSync is free running).
II.
Output Enabled in Holdover—The output is present unless SecureSync is not syn-
chronized to its references (SecureSync is in Holdover mode).
III.
Output Disabled in Holdover—The 1PPS output is present unless the SecureSync
references are considered not qualified and invalid (the output is NOT present while
SecureSync is in Holdover mode.)
IV.
Output Always Disabled—The output is never present, even if SecureSync ref-
erences are present and valid.
Table 2-7:
Signature control output-presence states
Ref.
Out-of-sync,
no holdover
In holdover
In-sync with
external reference
I.
II.
III.
IV.
Configuring Signature Control for an Output
To review or configure the Signature Control setting for any output:
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CHAPTER 2 • SecureSync 2400 User Manual Rev. 2
2.22 Signature Control