How to eliminate output limit of agilent 4156c?

[hyeona2021]

 Hello,

I use agilent 4156c to measure inverter voltage transfer characteristic.

The input(Vin, Vdd, Vss) was measured by SMU mode and output voltage was measured by VMU mode.

However when the output voltage exceeds 23.5V it didn't show the result over 23.5V.

I'm in trouble with this output limit. How can I solve this limit? 

Any help and reply would be really appreciated.

Thank you.  

[cstorey]

Vin, Vdd, Vss should be controlled by VSUs or SMUs, and the measurement of Vout should be monitored using an SMU.   According to page 213 of the 4156C manual the VMUs have a 20V range. So you will need to use SMUs on the 100 or 200V range if you want to measure higher voltages. 

See - https://xdevs.com/doc/HP_Agilent_Keysight/HP%204155C,%204156C,%2041501B%20Manual%20Set/4155C_4156C_4...

Craig

[VA.KI]

Hello,

Here are recommendations for NI SMUs. This can be applicable to any SMU.