Operating the Device 59
Backup freq
(only point 2 BILEVEL ST20/25 in BILEVEL S mode)
By activating the backup frequency ventilation will be automatically restored if patient
suffers from a persistent apnea (> 15 s). Evolving mandatory ventilation is characte-
rized by following fixed parameters:
• f = 10 bpm
• I:E = 35:65 %.
Selection of backup frequency the physician
1. Select the complete menu (see page 47).
2. Use the selection keys and to select Backup freq.
3. Press the the enter key and if necessary, input the PIN code with the selection
keys and . Press the enter key after every digit.
4. Press the enter key and then use the selection keys and to select ON
or OFF. Confirm your setting by pressing the enter key .
P-Min
(only point 2 AutoCPAP in APAP mode)
Selection of P-Min by the physician
1. Select the complete menu (see page 47).
2. Use the selection keys and to select Mode.
3. Press the the enter key and if necessary, input the PIN code with the selection
keys and . Press the enter key after every digit.
4. Use the selection keys and to select the APAP mode.
5. Press the selection key . The menu item P-Min is now displayed.
6. Press the enter key and then use the selection keys and to set the desi-
red value. Confirm your setting by pressing the enter key .
The parameter P-Max is set next.
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