Users Manual Part 2

Use the status sc command. Observe the Overall Status field of the resulting output and proceed as
follows:
• If Overall Status = Active – <state> /
<reason>, this is an indication that the Site Controller is
currently active, together with the site reference state and the reason for that state. These states
and reasons are explained in Table 105: Site Reference States – status sc on page 378 and Table
106: Site Reference Reasons on page 378.
• If Overall Status = SC is going active – waiting for BRs, the Site Controller may be unable to
communicate with the BRs. Waiting for the Site Controller configuration file load, the configuration
file may be corrupt or is not present. See LED Fault Indications on page 373 and Troubleshooting:
SC Config File on page 379.
Table 105: Site Reference States – status sc
Site Reference State Explanation
UNKNOWN The site reference is initializing - this is a transient state that may
persist for a few minutes at start-up.
ENABLED SYNC The site reference is fully trained to GPS - This is the highest level
of functionality.
DISABLED The site reference is not working.
FREE-RUN SYNC This is the first level of fallback - The site reference continues to
provide its highest level of service in this state until the free run tim-
er expires.
NON-SYNC This is the second-level fallback - The site reference is providing
service however any feature that needs sites to be synchronized
may be impaired.
NON-SYNC ADJ-RE-
QUIRED
The site has been operating in its 2nd level fallback mode for too
long (> 350 days) and should be disabled by the operator.
ENABLED NON-SYNC The site has been configured to operate in its second-level fallback
mode (FNC) to enable start-up without GPS.
Table 106: Site Reference Reasons
Site Reference Reason Explanation
NO REASON Normal operation - no explanation needed
1PPS LOST The 1PPS timing source from the GPS is not present.
FREE RUN TIMER EXPIRED The SR has been free running for longer than the time con-
figured during installation.
UHSO AGEING The UHSO (Ultra High Stability Oscillator) is approaching
end of life and requires replacing soon.
SITE REFERENCE ALARM An unspecified site reference condition has occurred.
FREQUENCY CALIBRATION
TIMER EXPIRED
The SR has been free running without GPS for over 350
days - GPS calibration is required to ensure RF frequency
stability compliance.
GPS OK The GPS receiver is supplying a valid 1PPS timing source.
GPS AND NTS LOST GPS, peer SC reference (second SC in the MTS with two
SC), and NTS connection is lost. It means that at least NTS
must be made available otherwise you need an adjustment
6802800U74-AP
Chapter 13: MTS Troubleshooting
378