B&K Precision 4040B - Manual - Manual (Page 37)

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3.9 Rotary Input Knob
Use this knob to increase and decrease numeric values.
The cursor indicates the low-order position of the
displayed value which changes when you rotate the knob
(for straight numeric entries only). For other types of
data, the whole value changes when you rotate the knob.
3.10 Power-On Settings
At power-on, the waveform generator performs a
diagnostic self-test procedure to check itself for errors. If
an error is found, an error code and text will appear in the
display window. Other error codes appear when you
enter an invalid front-panel setting. For more information
on error codes, see the Error Indication section.
When the waveform generator finishes the diagnostic
self-test routine, it enters the local state (LOGS) and
assumes power-on default settings. Table 1 lists the
factory default settings or selected after RECALL 0.