开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

HP 8563E Shows Signal Present at 100MHz and below without an Input


 

Hi all,
?
I have an HP 8563E which is showing signal present at close to 0dB at 100MHz and below without a Input connected. Above 100MHz the unit appears to be working as expected. Any thoughts on where to look? Thank you.

Join [email protected] to automatically receive all group messages.