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2651A output-off mode

Model 2651A
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bogdan.ofrim
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Joined: September 13th, 2013, 4:43 am
Country: Romania

2651A output-off mode

Post by bogdan.ofrim » September 13th, 2013, 4:58 am

Hello,

I tried to find the answers to the following questions in the reference manual but I could not see them.

1. What happens to a 2651A unit in output-off mode (0V) if a apply a current greater than the output-off current limit?

2. What happens to a 2651A unit in output-off mode (0A) if a apply a voltage greater than the output-off voltage limit?

Thank you.

Bogdan

Andrea C
Keithley Applications
Keithley Applications
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Joined: October 15th, 2010, 10:35 am
Country: United States
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Re: 2651A output-off mode

Post by Andrea C » September 20th, 2013, 5:09 am

1. What happens to a 2651A unit in output-off mode (0V) if a apply a current greater than the output-off current limit?

ANS: the 2651A will go into current compliance and will limit the current. The voltage at the terminals will be dictated by your active load.

2. What happens to a 2651A unit in output-off mode (0A) if a apply a voltage greater than the output-off voltage limit?

ANS: Avoid this condition. If the SMU is pulled out of the high Z state represented by forcing 0A because it goes into voltage compliance, and then you further expose it to higher voltages, unregulated current could flow between your active load at V1 and the SMU at V2. It could damage the 2651A.

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