System Settings


The System Settings screen provides a view of the system settings described in the following table.

Click Edit to change the settings.

Item

Description

Currently used SSM value

Displays the priority value (0 through 9).

Input Selection Mode

Automatic

The TimeHub automatically selects the qualified input to use as the active timing reference.

Manual

The TimeHub attempts to use the requested channel as the active timing reference (see Manual Channel below).

Note: If the requested channel is not qualified, the setting goes to Automatic. Once the requested channel is accepted, if it later becomes disqualified for any reason, the setting goes back to Automatic.

Forced

The TimeHub attempts to use the requested channel as the active timing reference.

Note: If the requested channel is not qualified, the Clock card enters holdover mode (even if there are other qualified inputs). If the requested channel subsequently becomes qualified, it becomes the active timing reference.

Manual Channel

Displays the port to be used when the Input Selection Mode is set to Manual.

SSM Support

Indicates if SSM support is enabled or disabled.

Active Clock

Displays the active Clock card (Clock 1 or Clock 2).

Set Single Clock

Indicates if the single clock setting is enabled or disabled.

Note: If the normal operation for a shelf is with a single Clock card (non-redundant operation), selecting ENABLE prevents an alarm for this condition.

Align CC Outputs to CC Input

Indicates if phase-alignment of a CC output to a CC input is enabled or disabled.

Note: Bipolar violations are adjusted on the output so that they are phase-matched (time-aligned to within tens of nanoseconds) to the bipolar violations of the same polarity on the input.