B&K Precision 5491B - Manual - Manual (Page 17)

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2.6.6 Warm-up time
The multimeter is ready for use as soon as the power-up sequence has completed. However, to achieve
rated accuracy and stability, allow the instrument to warm up for half an hour. If the instrument has been
subjected to extreme temperatures, allow additional time for internal temperatures to stabilize.
2.7 Display
The display of the multimeter is primarily used to display readings, along with the units and type of
measurement. Annunciators located on the left, right and bottom indicate various states of operation.
See section 2.2 for a complete listing of annunciators.