Synchronization Status
- Updated2025-11-19
- 3 minute(s) read
FlexLogger displays the synchronization status of your system on the toolbar, helping you troubleshoot synchronization issues based on the status of your system.
Introduced in FlexLogger 2019 R2
This feature is only available as part of a complete FlexLogger
license. Refer to FlexLogger Editions for more information.
FlexLogger supports network and PXIe synchronization for compatible devices. If your system does not require or support synchronization, you can disable this feature by going to and unchecking Enable multi-chassis and network synchronization on the General tab.

Refer to the following table to determine the synchronization status of your system and to determine how to resolve any synchronization errors.
| SYNC Status | Meaning | Troubleshooting Tips |
|---|---|---|
| No SYNC status in toolbar | Your system has only one chassis or device. | - |
| Red | Not all devices are synchronized. Click SYNC to display which supported devices in your system are synchronized and which do not support synchronization. | Synchronization conditions have been met, but errors exist with the device or
network setup. Verify that none of the following issues are present in your
system:
|
| Grey | Synchronization is disabled in Preferences. | Go to and ensure that Enable multi-chassis and network synchronization is checked. |
| Project is not correctly configured for synchronization. |
|
|
| Yellow | Multiple synchronization groups detected. Devices in the same sync group are synchronized. | Devices on the network are connected in more than one subnet, or are separated by a network switch that does not support 802.1AS. This is expected behavior if you have multiple sync groups on different subnets, or if you have both a PXI sync group and a TSN sync group. |
| Green | Synchronization is enabled and the device configuration is supported, but unavailable devices have one or more channels configured for synchronization. | Verify your hardware configuration has all devices available. |
| Synchronization is enabled and the device configuration is supported. | — |
Related Information
- Using PXIe Synchronization in Your Project
Automatically synchronize devices between PXIe chassis.
- Using Network Synchronization in Your Project
Automatically synchronize acquisitions between systems across an Ethernet network.
- FlexLogger Editions