Hi,
I am doing the stress test with an agilence 4156C. 4 SMUs are used either for stress or DC bias. I am not using them to measure I or V (I measure something else). I design the sequence as "test-stress-test-stress-test" in a continuous way. 2 stress SMUs will change from V1 to V2 during the stress, then change back to V1 during the test. According to 4156c user guide II, the 4156C can be programmed as "standby(test under V1)-stress(V2)-standby(test under V1)-stress(V2)-standby(test under V1)". The benefit is that the voltage V2 will not go to zero after stress, but directly shifts to V1. Also the other 2 bias SMUs can keep a constant voltage (they are set in standby), for example V0, in whole test. This aslo helps to reduce noise.
My question is, how to set the standby voltage and make it run? I can set standy. But I failed to make it send output (V other than 0) unless I start a stress or sweep. Also the SMUs will output zero not V0 after the stress.
In a simple word.
2 SMUs will give (0-V2-0-V2-0)
2 other SMUs will give (0-V0-0-V0-0)
BTW, I am using the latest Labview driver (GBIP).
Any suggestions will be highly appreciated.
Thanks!
