using Keithley 2400 SourceMeter and either a Keithley 6485 or keithley 487 picoammeterat the same time

[GerdW]

Hi Matt,

please don't create double/triple threads for the very same questions. Stick with "one problem, one thread"…

can anyone point me to a direction where i can find the script.

You will find the "script" aka the commands you need to use in the manual of your Keithley487!

Did you check the IDNet? There are drivers for your device available!

[Minions]

GPIB connections allow up to 30 primary addressed pieces of equipment to addressed on the same bus.  This means that your two instruments are still on the same bus.  This also means that only one instrument on the bus other than the controller can be active (Responding).  It is possible that your USB dongle does have two separate GPIB busses.  If that were the case, it would allow both instruments to have the same GPIB address (I.E. GPIB 11) and be addressed as GPIB0::11::INSTR and GPIB1::11::INSTR.

[Albert.Geven]

Allthough it is not possible to read from the two instruments at the same time. You can trigger them at the same time by using the group triggering facilities of gpib.