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# isAdjustingSignalCompensationDelayWhileRunningSupported

Whether adjusting the signal compensation delay property of an external sync device is supported while the session is running.

```
var isAdjustingSignalCompensationDelayWhileRunningSupported: Bool { get }
```

## Discussion

This property returns `true` if the `signalCompensationDelay` of an [`AVExternalSyncDevice`](/documentation/AVFoundation/AVExternalSyncDevice) being followed by this device’s [`AVCaptureDeviceInput`](/documentation/AVFoundation/AVCaptureDeviceInput) can be adjusted while the [`AVCaptureSession`](/documentation/AVFoundation/AVCaptureSession) is running.

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