Hi,
Forwarding a question from someone regarding the subject:
The 8566 spectrum analyzer, there has a sweep output at the rear panel, and this output will provide a voltage proportional to the horizontal sweep of the CRT trace that ranges from 0V to +10V.
For the PSA E4440A, there is no sweep output. The preselector tune out on PSA is equivalent to the Sweep Tune out of the 8566B (and not the sweep output). However, if you only sweep across just one band (for instance low band 0-3GHz), then it will just give you one ramp as you sweep across that band. The Y axis (magnitude) is provided by the option 124 video output. The Z-axis (penlift) is provided by the trigger output.
Let say I set on PSA is in CW mode-310.7MHz (fixed frequency), span zero. So at this setting, how can I get the ramp volt? and can i get the horizontal sweep of the CRT trace circuit from the PSA?
Forwarding a question from someone regarding the subject:
The 8566 spectrum analyzer, there has a sweep output at the rear panel, and this output will provide a voltage proportional to the horizontal sweep of the CRT trace that ranges from 0V to +10V.
For the PSA E4440A, there is no sweep output. The preselector tune out on PSA is equivalent to the Sweep Tune out of the 8566B (and not the sweep output). However, if you only sweep across just one band (for instance low band 0-3GHz), then it will just give you one ramp as you sweep across that band. The Y axis (magnitude) is provided by the option 124 video output. The Z-axis (penlift) is provided by the trigger output.
Let say I set on PSA is in CW mode-310.7MHz (fixed frequency), span zero. So at this setting, how can I get the ramp volt? and can i get the horizontal sweep of the CRT trace circuit from the PSA?
Unfortunately PSA does not have an output equivalent to the sweep output on 8566. For the CW example you gave PSA can not provide a voltage ramp proportional to the horizontal sweep position.
> How can I get the ramp volt? and can i get the horizontal sweep of the CRT trace circuit from the PSA?
Since PSA doesn't have a CRT there is no CRT trace circuit. The video image is displayed on an LCD and the display images are created on the CPU board and displayed in rapid succession much like on your desktop computer.
PSA still makes measurement sweeps, but the type of display sweeps your are inquiring about are not part of the PSA architecture.
It's not pretty, but if you really need the sweep output with your PSA you could use a PSA with Option 124 to send the video output to the channel input of an old oscilloscope that has a display sweep output. Then set the oscilloscope to trigger from PSA and set the sweep time of the oscilloscope to match PSA. Then you could get your display sweep output from the oscilloscope.
Best Regards,