097-55501-01 Revision M – January 2009 TimeHub 5500 User’s Guide 197
Chapter 4 Testing and Configuring the TimeHub
Checking System Operation
8. Repeat step 6 to verify that to ensure that the Standby card in slot 3B is not
responding and the Active card in slot 4B is still responding.
9. Reconnect the cable to the Port A SFP on the NTP Server card in slot 3B.
10. Set the NTP Server card in slot 3B the Active card:
ED-EQPT:::S0-OUT3B:CTAG:::NTPSLOT=ACT;
ED-EQPT::S0-OUT3B:CTAG:::NTPPAIR=APPLYCFG;
where a and b are described in step 1.
11. Remove the cable from the Port A SFP on the NTP Server card in slot 4B.
12. Repeat step 6 to verify that to ensure that the Standby card in slot 4B is not
responding and the Active card in slot 3B is still responding.
13. Reconnect the cable to the Port A SFP on the NTP Server card in slot 4B.
Checking System Operation
When the signals have been acquired and the outputs are stable enough to output
PRS, the TimeHub 5500 enters its normal operation mode. During normal
operation, the following conditions exist:
These should be observed on both Clock cards:
– Enabled inputs show E LED lit
– Qualified inputs show Q LED lit
– The active input reference shows A LED lit
– One Clock card should have the Active LED lit; the other Clock card has
the Standby LED lit
DS1 and/or CC outputs are functioning according to specifications
Enabling Security
The TimeHub 5500 has a security feature that requires a user to supply a user
name and password in order to access or modify parameter settings. Each user can
be assigned to one of three different security levels; each level can access system
commands that are assigned to corresponding levels.
When security is enabled, a user is required to log on to the system before entering
TL1 commands. If security is disabled, logging on is not required. Anyone
connecting to the TimeHub can execute any command at any security level.
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