Symmetricom 1000, 1100 manual Provisioning the IOC, Setting the System Mode, Sysmode SSU

Chapter 4 Provisioning the TimeProvider

Provisioning the IOC

Provisioning the IOC

This section describes how to provision the IOC.

Setting the System Mode

The SET-SYS-MODE command allows you to provision the operating mode of the TimeProvider to one of the following:

SSU – Synchronization Supply Unit: provides filtering compliant with G.812 and GR-1244

SUB – Subtending mode: provides composite clock input tracking compliant with GR-378

PRR – Primary Reference Receiver mode: provides ITU-T G.811 and Telcordia GR-2830 requirements for Primary Reference Receivers/Clocks

In the SSU mode, you can select the system reference from signals on the GPS, PRS, INP1, or INP2 connectors.

In the SUB mode, the PRS input is set to Monitor only; you can select the system reference from signals on the INP1 or INP2 connectors. You can provision these inputs to Composite Clock signal types only when the TimeProvider is in SUB mode.

In the PRR mode, the antenna provides GPS signals as the primary reference. When enabled and qualified, the PRS, INP1, and INP2 signals are used as part of the BesTime algorithm only to enhance the stability of the output signals. If the GPS input is lost when in PRR mode, the TimeProvider enters the Holdover mode even if qualified signals are present on the other inputs.

Setting the System Mode

Use the SET-SYS-MODE command to provision the TimeProvider’s operating mode. See Operating Modes, on page 23, for more information on how the operating mode affects the TimeProvider’s inputs and outputs.

SET-SYS-MODE:[<tid>]::[<ctag>]::<keyword>=<value>;

This command has a default access level of ADMIN.

<keyword>	<value>	Description	Default value
SYSMODE	SSU	Set the TimeProvider to SSU operating mode	SSU
		PRS – Priority 1 and Enabled
		INP1 – Priority 2 and Enabled
		INP2 – Priority 3 and Enabled
		GPS – Disabled and can be enabled

097-58001-02 Revision G – April 2008 TimeProvider User’s Guide 105