Fluke 5520a Operator's Manual page 50

11. Press a multiplier key, if necessary.
12. Press H.
13. Control Display shows entered value. For
example, 123.456 mV, 234.567 mA, and
1.1234 kHz.
14. Press E.
15. Press O to activate the Calibrator output.
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oe38f.eps
oe39f.eps