B&K Precision 5491B - Manual - Manual (Page 21)

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5. In manual range, i f the “OVL.D” message is displayed, press up key to select a higher range
until a desired reading is displayed. Use the lowest possible range for the best resolution. Press
+ to turn on the 2nd parameter display, Use or key to select function for
2 nd display.
6. Take readings from the display.
(Model 2831E) DC Current measurement on Range: 2 mA, 20 mA, 200 mA
(Model 5491B) DC Current measurement on Range: 5 mA, 50 mA, 500 mA
(Model 2831E) AC Current measurement on Range: 2 mA, 20 mA, 200 mA
(Model 5491B) AC Current measurement on Range: 5 mA, 50 mA, 500 mA
AC CURRENT SOURCE
DC CURRENT SOURCE