Omron HCG-801 - Manual (Page 40)

OVERWRITE
The unit will overwrite the oldest stored reading when the SD memory card or unit memory is full.
A message will warn that this will happen, you can choose to hide or display this message.
(The default setting is to hide the message.)
Press the button or button to highlight Display or Hide, then press the SELECT button to
confirm your selection.
CAUTION: While Hide is selected, the unit will overwrite (erase and replace) the oldest
measurement data with the results of the new measurement without displaying a
message (when the SD memory card or unit memory is full).
ABOUT THE OVERWRITE MESSAGE
If you select Display, the unit will display a message before you take a
measurement, asking if you want to overwrite existing data with the new
measurement data.
Select Yes to overwrite the oldest ECG data with the results of the new
measurement.
If you select No, measurement is cancelled.
HOW TO ADJUST THE SETTINGS
40
The current setting is displayed at the
bottom of the screen. * The default setting is Hide.