140 097-55501-01 Issue 6 – June 2003
1
TimeHub 5500 System Guide
5
(cont’d)
The corresponding retrieval command:
RTRV-SYNC::CLK-a:<ctag>:::PARAMETER=MONITOR;
is used to determine the enable setting of a selected input.
If using TimeScan THC:
Since this setting is rarely used, there is no built-in command to change the MONITOR
setting. Instead, type the desired TL1 command on the Communications screen (see step
2) into the “TL1 command” area and select “Send”.
If using terminal software, such as HyperTerminal, type and enter the desired command.
6 Set PRS Input frequency, if needed. The PRS reference frequency can be set to expect
either a 5 or 10 MHz input. The default is 10 MHz. If necessary, change the setting.
If using TimeScan THC:
Use the control labeled PRS Frequency in the lower right of the Configuration -> Input
screen to set the PRS frequency appropriately.
If using terminal software, such as HyperTerminal, to set the PRS Frequency to 5 MHz,
type and send:
ED-SYNC::CLK-0:SV347:::PRC5MHZ=Y;
Setting the value to N will set expected PRS Frequency to 10 MHz. The current setting can
be retrieved with:
RTRV-SYNC::CLK-0:SV348:::PARAMETER=PRC5MHZ;
7 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, for some reason, you wanted DS1 input 2 to be
preferred over DS1 input 1 the priority could be changed to make this so. Either the input 1
priority could be lowered or the input 2 priority could be raised.
To change priority if using TimeScan THC:
Use the Priority row on the Configuration -> Input screen to change the priority of the
selected input as desired.
Procedure 4-9. System Configuration (Cont’d)
Step Action
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