Symmetricom TimeHub 5500 User Manual

097-55501-01 Revision M – January 2009 TimeHub 5500 User’s Guide 165
Chapter 4 Testing and Configuring the TimeHub
Provisioning Inputs on a Master Shelf
To retrieve the current setting, type:
RTRV-SYNC::CLK-0:SV348:::PARAMETER=PRC5MHZ;
7. Select which inputs will not be monitored, if any. The TimeHub is capable of
selectively monitoring inputs for conditions such as LOS or Loss of Framing
even if that input is not enabled. You can performance monitor that input without
allowing it to be used as a timing reference. By disabling that input but keeping
MONITOR enabled, the status of such an input can be observed (via
RTRV-COND) and logged without causing an alarm if that input has a problem.
Monitoring is enabled by default on inputs 0 – 4.
To enable or disable monitoring for an input, the TL1 command format is:
ED-SYNC::CLK-a:<ctag>:::MONITOR=b;
where a = 0 – 4 to identify the input (PRS=0)
b = Y to enable monitoring, N to disable monitoring
To prevent retrieval of status information for any disabled inputs, disable the
monitoring capability. For example, to disable monitoring of the DS1 input 2,
issue the command:
ED-SYNC::CLK-2:SV343:::MONITOR=N;
To determine if monitoring is enabled for a specific input, issue the command:
RTRV-SYNC::CLK-a:<ctag>:::PARAMETER=MONITOR;
8. Change priorities if desired. The priority setting provides a way to prefer a
particular input for use as the active timing reference when more than one input
has been qualified. The lower the number, the higher the priority. The default is
that the PRS input has highest priority and all others are equal. If you want DS1
input 2 to be preferred over DS1 input 1, lower the input 2 priority or raise the
input 1 priority.
The general TL1 format for priority setting is:
ED-SYNC::CLK-a:SV380:::PRIORITY=b;
where a = 0 – 4 to identify the input (PRS = 0)
b = 0 – 9 to set the priority value
To set input 2 priority to 3, issue the command:
ED-SYNC::CLK-2:SV380:::PRIORITY=3;
To retrieve the priority setting for input 2, issue the command:
RTRV-SYNC::CLK-2:SV381:::PARAMETER=PRIORITY;

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English