I'm using an A model PNA-X with the latest A.10.64.09 firmware. In the help file, it stated that the equation editor should work for all PNA apps. However, as you can see from the attachment, when I try to query channel 8 which is a Swept IMD measurement channel for the equation status using SCPI commands, it times out. But when I perform the same operation on channel 7, which is a S parameter channel, it immediately tells me that the equation editor status is 0. I want to program in an equation using scpi, instead of doing it manually thru the menus, which works. If someone can verify and propose a fix, that would be great.