
Operation instructions
Buttons
6
Page 14
6.2
Buttons
Start/Stop button
The Start/Stop button is located nearest the LCD display and combines these
functions:
Manual blood pressure measurement
If it appears necessary, the patient can start an additional manual blood -
pressure measurement by briefly pressing the Start/Stop button. The result is
marked as a manual measurement and is saved in the device. Reasons for an
additional measurement: feeling of dizziness, pain (angina pectoris or
headaches), palpitations.
Switch device off
Hold down the Start/Stop button for more than ten seconds. Release the button
when two horizontal segments appear on the LCD display. PremoPort
Four
is
now switched off. If you do not release the button within two seconds after the
two horizontal segments are displayed, the recorder returns to normal operation.
This function helps reduce the chance of inadvertently switching the device off.
While the recorder is switched off, no other functions are available. The recorder
can only be manually switched on.
Switch device on
PremoPort
Four
is switched on by pressing the Start/Stop button and holding it
down for at least 3 seconds. If the device is switched off, no other functions are
possible.
Checking the LCD display
Press and hold the Start/Stop button to illuminate and check all segments of the
LCD display.
Checking the battery voltage
Press and hold the Start/Stop button for more than 5 seconds to display the
battery voltage on the LCD display (e.g. 2_64 corresponds to 2.64 V). The volt
display lasts as long as the button is held down, however, no more than 5
seconds. Then the device returns to the time display. The voltage of fully
charged rechargeable batteries must be more than 2.5 V and more than 3 V in
the case of alkaline batteries.