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Keithley 2400 surge current

Models 2400, 2401, 2410, 2420, 2425, 2430, 2440, 6430
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Keithley 2400 surge current

Post by Huandao » March 19th, 2013, 12:17 am

I currently using a Keithley 2400 to test hard disk drive head, which is very sensitive device. The supplied voltage must not exceed 0.1 V, however the hdd heads keep dying during testing, I'm quite certain that's not due to ESD.
Could the keithley cause this problem? anyway to test it?

Jane S
Keithley Applications
Keithley Applications
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Re: Keithley 2400 surge current

Post by Jane S » April 16th, 2013, 9:19 pm

There's a possibility that during your power up cycle/sequence of the instrument a transient happens, which could be higher than 0.1V. Is there a way to debug your test(s) using a scope maybe to see whether there's a spike going on?


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Re: Keithley 2400 surge current

Post by mmanfrini » April 22nd, 2013, 6:50 am


Unfortunately, I am having the same problem. I talked so many people and it seems to be a common issue with the 2400 series. The voltage spikes can reach more than 10V while sweeping from positive to negative voltages (checked with oscilloscope).

Mu question is: what do you recommend as a surge protection? Maybe connect a large resistor or capacitor across the input/output and connect the DUT in parallel?

Many thanks,


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