SIGMA RC 1209 - Manual (Page 9)

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4 OVERVIEW
4.4 OVERVIEW OF MODES AND FUNCTIONS
There are three main modes to the Running Computer. (Sleep mode,
training mode, setting mode). Switching between these modes requires
that you press and hold a button for 3 seconds.
Sleep mode Setting mode
Press and hold one of the buttons Press and hold
Training mode
Press and
hold
Press and
hold
Press and hold the PULSE (-) button down.
The display will flash twice, indicating that
the training mode is closed.
Press and hold the PULSE (-) button.
The sleep mode is displayed.
Release the PULSE (-) button.