keithley 2636 measures current and 2400 offers a 3 volt pulse synchronized in a labview program

[lamlin]

Hello,

I am not very familiar with labview and I neet a program to realize keithley 2636 measuring current and 2400 offering a 3 volt pulse synchronized.

It means that when 2636 measure one times, 2400 give a pulse. When 2636 measure 100 times, 2400 offers 100 pulses synchronized.

The Channel A of 2636 is used for measuring and Channel B is used for another works.

The attatchment is the labview program I created and it can not be run synchronized.

Thanks for your help!

email:lamkkaayy@gmail.com

[GerdW]

Hi lamlin,

you could read the user manual of both Keithley devices to understand their trigger and synchronization options!

Keithley devices offer a synchronization option using a special cable as described in the manuals and some app notes...

[lamlin]

HI GerdW,

Thanks for your reply!

In fact, I have the cable which can connect more than two device to computer and I have connected 2636 and 2400 to computer successfully. They can be run in the same labview program, but the result is not my expect.

In principle, I put 2636 and 2400 into the same "for loop" and they should run synchronized. But in real situation, 2636 runs faster than 2400 which results the program is not synchronized.

I want to figure out the reason why it cause and how to solve it.

Thanks for your help!

LIN

[GerdW]

Hi Lin,

I did not talk about a GPIB (or similar) cable to connect both devices with a PC, I did talk about the special cable for synchronizing both devices with each other called TriggerLink!

Please read the user manual of your K2400, (chapter 11 on triggers, or figure 1-2 for a view of the rear panel). It describes the TriggerLink capabilities of Keithley devices!

RTFM!

[lamlin]

Hi GerdW,

Thanks for your help and I will read it now...

Best Regards

LIN