User's Manual

16 - 10
16.10.2 Setting the O
2
Waveform
To set the O
2
waveform, follow this procedure:
1. Select the CO
2
numeric area or waveform area to enter the CO2 dialog.
2. Select the
Setup tab.
3. Set
Speed and O2 Scale of the O
2
waveform.
16.11 Setting the Gas Compensation
The presence of interfering gas affects the CO
2
measurement. To get the best possible measurement result, it is
recommended to set the gas compensation. The configured concentration of the interfering gas should be in
accordance with its actual proportion.
For the microstream CO
2
module, gas compensations are not required.
CAUTION
• Make sure to use the appropriate compensations. Inappropriate compensations may cause
inaccurate measurement values and result in misdiagnosis.
For the sidestream CO
2
module, follow this procedure to set the gas compensation:
1. Select the CO
2
numeric area or waveform area to enter the CO2 dialog.
2. Select the
Setup tab.
3. Set the compensation according to the actual condition.
16.12 Choosing a Time Interval for Peak-Picking
For microstream CO
2
modules, select a time interval for picking the highest CO
2
as the EtCO
2
and the lowest as
the FiCO
2
.
To set the time interval, follow this procedure:
1. Select the CO
2
numeric area or waveform area to enter the CO2 dialog.
2. Select the
Setup tab.
3. Set
Maximum Hold.
4. Toggle between
Single Breath, 10 s, 20 s and 30 s.
◆ Single Breath: EtCO
2
and FiCO
2
are calculated for every breath.
◆ 10 s, 20 s, or 30 s: EtCO
2
and FiCO
2
are calculated using 10, 20, or 30 seconds of data.
16.13 Performing the Leakage Test
When measuring CO
2
using the internal CO
2
module or the sidestream CO
2
module. The leakage test is required
every time before the CO
2
measurement. To perform the CO
2
leakage test, follow this procedure:
1. Connect the measuring accessories as per section
16.6.1Preparing to Measure CO
2 Using the Sidestream CO2
Module
.
2. Wait until the startup finishes. Completely block the gas inlet on the sidestream CO
2
module or on the N1.
The alarm message “
CO2 Airway Occluded” will appear on the screen.
3. Continue to block the gas inlet for another one minute.
4. Select the
Main Menu quick key → from the System column select Maintenance → input the required
password
→ select .
5. Select the
Module tab → CO2 tab.
6. Check that the current flow rate is less than 10ml/min, and the alarm message “
CO2 Airway Occluded”
does not disappear.