On a 7D15, I am trying to figure out this plug-in. If you put the 7D15 into a horizontal slot and patch a BNC cable from a frequency generator to one of the two inputs at the bottom (we'll say the A input on the lower left of the 7D15), and then patch a BNC cable from the 7D15 output to a vertical plug-in, you can get the waveform to display and you can get the numeric frequency to display (if the 7D15 toggle switch is in the middle setting) - and if you change the frequency on the freq gen you can see the numeric freq readout change and the waveform freq change, but you can't change the freq gen amplitude and get the waveform amplitude to change. I presume this is because the 7D15 outputs are fixed in their output voltage level?
I have lots of other questions about the 7D15 - but for starters can anyone confirm the above is normal operating behavior?
Thanks, EF