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current auto-range

DMM6500 6½-Digit Touchscreen Multimeter
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zvikaef
Posts: 14
Joined: June 9th, 2016, 2:57 am
Country: Israel

current auto-range

Post by zvikaef » March 29th, 2020, 12:25 am

hi.
when measuring current using auto-range, is there interruption in current flow when the instrument changes ranges ?

Andrea C
Keithley Applications
Keithley Applications
Posts: 1436
Joined: October 15th, 2010, 10:35 am
Country: United States
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Re: current auto-range

Post by Andrea C » March 31st, 2020, 9:47 am

I did a quick test using a 2450 SourceMeter to do a 0-5V voltage sweep on 110Ω with the DMM6500 wired in series as DC Amp meter.
I tested both fixed 100mA range and auto range on the DMM.
The SMU was fixed ranges for both sourcing and measuring.

Simple setup sketch:
DMM6500_DCI_Range_Change.png
setup
DMM6500_DCI_Range_Change.png (99.04 KiB) Viewed 135 times
Outcomes:
DMM6500_DCI_Range_Change_sweep_outcomes.png
compare 2450 to DMM
DMM6500_DCI_Range_Change_sweep_outcomes.png (138.31 KiB) Viewed 135 times

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