Quick update here: It turns out that there are 2 Python modules exporting the name "serial", one called serial, one called pyserial. I had to do "Python -m pip uninstall serial", followed by " Python -m pip install pyserial" before it worked. Found this by searching for the error message.
I was able to download exactly 1 WF from my 468 using the micro-pro based AR488 controller (configured as a controller) but after that no more communication.
A while ago, I posted this on eevblog:
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I was able to talk to a Tektronix 468 (with GPIB option) using the micro-pro version of AR488 (thanks so much for this design).
The program I used was the Prologix Configurator from KE5FX (this means I had to change the AR488 version string to match prologix).
The 468 was configured as device 3 and the TALKONLY option was DISABLED.
Commands I issued before turning the 468 on:
++addr 3
++srqauto 1
++eor 7
The 468 (which is ONLY a talker, not a listener) issues an SRQ value 1 on startup (called Power On SRQ).
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the AR488 handles this SRQ using these settings. With this setting, the GPIB LED on the side of the 468 is turned off because the "Power On SRQ" request is now handled.
-Jan-
jrseattle