Hi Frank,
Yes, all of our spectrum analyzers have internal references. You do not need to provide an external reference unless you desire. Also, when you select “Internal Out” in the file menu, this does mean that you are attempting to output the internal reference on the BNC port, which is not supported for the SA44B.
As for your disconnection issues. Is this a recent issue, or has it always been like this? Basic troubleshooting steps might involve
1) Trying a different USB port on the PC.
2) Checking the USB connector for debris.
3) Swapping USB cables
4) Stopping background processes that might be consuming large amounts of resources.
5) Setting your power option to “High Performance” via the Control Panel->Power Options menu. This is a common solution to random device disconnects.
6) Disabling any anti-virus software.
I look forward to your response.
Regards,
A.J.
