If you are experiencing trouble with your DS345 you can either send your instrument back to SRS for service, or you can try and fix the problem yourself. If you wish to send the instrument back now click here.
If you wish to try and fix the problem yourself, the following troubleshooting guide may help you.
DS345 Troubleshooting Guide
Generate variable duty cycle square wave with DS345 Burst function
Click here to download the procedure.
If you are still having trouble with your DS345, it will need to come back to SRS for service. Click here to get an RMA number.