Loïc Joly

SMU1 and SMU2 have both 4200-PA.
SMU2 is not playing any role right now, I am using DV2 without parameter to disable him.

I don't know what is KITE, but if I run an ITM in Clarius, the "resistor sweep" one, I can hear clicking before and after the sweep, but not at every point.

With now a resistor of about 100kΩ, I measure between 0 and 10mV and the measured current is below 1e-7A.
I added the RG command and if I am using a range above 1e-5 A, the clicking disappeared, but below 1e-5 A they are back.

The range selection issue gave me the idea to play also with the compliance value :   DV1, 4, 0, 1e-2.
1e-2A was too high and setting the compliance to a reasonable value a bit above the expected measure range removed the clicking !
 

Hi,

I am using KXCI to control a K4200 device and doing a very basic measure, apply voltage, measure current.
I am running with python the example in the manual Program 2: Basic source-measure (user mode) slightly modified to do a voltage sweep, and using a 80kohm resistor as DUT.
Below the pseudo-code:

US
IT1
BC
DR1
DV1, 4, 0, 1e-2
DV2

for V in range(0, 0.1, 0.01):
    DV1, 4, V, 1e-2
    I = TI1
    print(V, I)

The program is running, and doing the measurement, but I can hear at every points some relay "clicking" inside the K4200,
and If I use an external voltmeter on the resistor, I can see a short drop of voltage at every point.

How to avoid those voltage drops ?

The sweep program above is just to provide an example, because we have to investiguate "by hand" very sensitive samples,
and such voltage drops can destroy them.

best regards