PCIe time code decoding fails due to signal issues

• PCIe timecode card does not detect an incoming timecode signal
• Decoded timecode is intermittent, unstable, or drops out
• System time does not update based on the incoming timecode

• Incorrect time display settings in WinDiscovery (UTC vs local), time zone, DST, or a configured offset
• Incorrect time-handling settings (time zone, DST, offsets, UTC vs local display)
• Signal integrity issue (cable type and length, connector seating, grounding/shielding, or signal level)

1. In WinDiscovery, verify time display settings (UTC vs local), time zone, DST, and any configured offsets.
2. Check inputs, cabling, and network connectivity.
3. Restart and re-test after each change to isolate the cause.

This topic commonly comes up during configuration, verification, or troubleshooting. Understanding what this behavior or setting represents helps distinguish between normal operation and an actual fault.

Time Dissemination During Reference Outages