Symmetricom 1100 Interpreting Error Messages, Removing the IOC, Compatibility Alarm, IOC Memory

Chapter 6 Maintaining and Troubleshooting the TimeProvider

Diagnosing the IOC

Interpreting Error Messages

Error messages appear on the console as they occur, and include the time and date of occurrence. Refer to the event codes described in Table 6-5and to the alarm codes described in Table 6-7.

Compatibility Alarm

If you receive a COMPAT alarm, then one or more of the installed hardware and/or software components is not compatible with other components. Refer to the Software Release Notice (097-58001-22) for a list of compatible components and firmware revision levels. If necessary, update the firmware in one or more components using the procedures in Upgrading the Firmware, on page 187.

Removing the IOC

You can remove either of two IOCs in a shelf without affecting outputs. If you need to remove the only IOC in a shelf, or remove both IOCs from a shelf, outputs are interrupted and will resume once one IOC has achieved lock on an input signal.

IOC Memory

The IOC stores its configuration and the configuration of the redundant IOC, if it is installed. This configuration information is stored in non-volatile memory, and is retained even if the IOC is removed from the shelf. The IOC also stores the configuration of the IMC. The configuration of the IMC is stored in volatile memory and is lost if the IOC is removed from the shelf.

Removing the Only IOC

To remove the only IOC in a shelf, use the following procedure. Output signals will be interrupted; they will resume once the IOC has achieved lock on an input signal.

1. Save the contents of the IOC memory in the IMC by issuing the following command:

CPY-MEM:::::IOC,IMC,IOC;

This command may take more than two seconds to execute; if it does, then the In-Process response is issued. See the TimeProvider TL1 Reference Guide for more information on the CPY-MEM command.

2. Issue the following command to take the IOC out of service:

ED-EQPT::IOCm:::IOCSTATE=OOSRV;

where m is 1 or 2, and determines which IOC you take out of service.

3. Attach a wrist grounding strap and connect it to the TimeProvider chassis.

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