Andrea Clary

Link to service manual:
Service Manual on w140.com

Try:  older post - same topic

I note in the code, there is use of the TLINK connector digital triggering of the 2400 (TRIG:ILIN or TRIG:OLIN).
Unlike the 2602B, the 2604B does not have any digital IO.
The 2400 emulation is trying to map the TLINK triggering to digital IO lines in the 2600B.
Unfortunately, the model you picked does not have any digital IO.

And just checking: you mention you got the 2600B to be able to go to higher currents than what the 2400 can provide.
Using the emulation of 2400, the same 1Amp restriction will be applied.  You will not be able to access the new features of the 2604B when addressing it as a 2400.

TekScope Utility = free software

TekScope PC = has free entry level version and paid license versions too
TekScope PC Pricing and License Info

I want to be a little bit picky about the names of the software.

TekScope Utility is a Free software utility written by an Applications Engineer.
He has posts here on TekTalk that offer the download link of this *free* software.

We have a different software that does have paid license as well as an entry level free version:  TekScope PC

TekScope PC FAQ

TekScope PC License Levels
 

Using .list() from instrument console:

Do you have the Test Script Builder application?
If yes, at the TSP> prompt in the instrument console window you can have the full code listing of the factory KIPulse script printed out.  You can then copy and paste it to a tsp file for editing.
You'll need to load the edited version to your own script/revised function names.

At the TSP> prompt type this:

​​​​​​​TSP>script.factory.scripts.KIPulse.list()

Alternately, there are example scripts distributed with Test Script Builder or we have them posted to our Github site.
2600A or 2600B Pulsed Sweep Examples

For the courageous, here comes a sample for 2450 SMU.

First: I borrowed very heavily from the data streaming example for DMM6500 posted on our github:
Github: DMM6500 Streaming

Based on that template, I modified the lua file for SMU instead of digitizing DMM.
First, take note that 2450 SMU runs much slower than the 1MSample/sec digitizing DMM.

For the SMU, I put some functions that will ramp the voltage and take a current measurement at each voltage level.
There is also a repeat count parameter in case you want to cycle.
The revised Python and Lua code for streaming from 2450 is posted here:
GitHub: 2450 data streaming

With 2400 or 2420, don’t think you’ll get there.
To have each measurement available on the PC essentially as they are available would require the PC controlling a loop.  But as you observe, loops can have timing variation and changes with CPU speed, etc.
The use of trigger model allows better timing determinism, but as you observe, the instrument cannot serve up data and carry out the list sweep.  It’s available only at completion of the sweep.

The 2450 and TSP could be pressed into using trigger blocks to have good timing control and run some code that prints the buffer data to output queue for pickup by a VISA Read.  Keeping it coordinated will be a consideration.  For example, if you do VISA read too frequently, you could get timeout errors that would need handled.

There is a nice app note and Python sample on our GitHub for data streaming from our DMM7510 of DMM6500.  Similar approach can be applied to 2450, albeit at much slower rates than the DMMs.
 

App Note: (Appendix A: Python script for data streaming)

Github: DMM6500 data streaming:

Github: DMM6500 or DMM7510 long running Amp-Hr

Maybe obvious, but this error means the 6221 does not receive the expected response from 2182A on the rs-232.

Double check the rs-232 settings are same in both instruments.
Then set LAN or GPIB the active interface on 6221.
Press delta button on 6221 and accept defaults.
Error?