Open Easy III System Utilities

1. Click System Setup, click Data Map, find the Data Map that you want to add/calibrate EtCO2 on and click Edit.
2. Check to see if there is already an item in the Data Map for EtCO2. If there is, you can click the Edit DC Input Calibrations button and continue to Step 3.
   1. If there is no entry for EtCO2 in the Data Map, click the drop down arrow on the empty bottom line, scroll down and select ETCO2 (mmHg):
3. Click on the button labeled Edit DC Input Calibrations.
4. In the window labeled DC Input Calibrations, either select the channel with the ETCO2 (mmHg) data type from your list and click Calibrate or click the Add button, type EtCO2 in the Name field and use the drop down under Data Type to pick ETCO2 (mmHg). 
5. Check that the device is set to 0 mm Hg and 100 mm Hg on the right side of the window. 
   
   If not, click on the button that is incorrect and change the Calibrated Value to the desired reading (here we had to change the default value from 50 mm Hg to 100 mm Hg).
   
6. Click on the button labeled Read voltage from attached device for each calibration value. There can be a short pause while the software connects to the amplifier after you click this button, this is normal.
7. Click on the button to the right that is labeled with Device Input.
   
8. Change the input jack in the drop down to the DC Input that you have EtCO2 connected to on the Easy III Amplifier (typically this will be where on the Easy III amplifier you have connected the cable with the white band from the back of the Capnocheck). You need to choose a DC Input not being used by anything else in your Data Map.
   

On the Smiths Capnocheck:

1. Turn on the Capnocheck by pressing the STNBY/ON button in the bottom left hand corner of the device.
   
   
2. Press the MENU/ENTER button on the right hand side of the device.
   
   
3. Use the arrow button above/below the MENU/ENTER button to move to Analog Out, when the arrow is on Analog Out, hit the MENU/ENTER button again.
   
   On some units, you may see an option to choose Internal or External. If you do, look at the output cable at the back of the Capnocheck, If it is just a black plug running to three cables, then the device should be left on Internal. If you have a grey box between the Capnocheck and the black output cable (typically running to four cables), then the device should be set to External.The analog output cables supplies by Smiths are typically labeled but usually use:
   Analog 1 White
   Analog 2 Red
   Analog 3 Black
4. Use the arrow button to move to Channel 1 and hit the MENU/ENTER button.
   
5. Use the arrow button to arrow down to 0 Volts and hit the MENU/ENTER button, the system is now sending 0 Volts analog signal to the Easy III amp.
   
   *Note: make sure that you hit the MENU/ENTER button so that the 0 Volt is no longer highlighted, the device doesn’t send the voltage until you press enter and the highlight goes away.
   Not Selected:
   
   Selected:
   
   

In Easy III:

1. Click on the button in your Device Calibrations that is labeled 0 mm Hg. A DcCalibrationManager window will appear asking you to connect and if you are ready . Click OK.
   
   A Calibrating window will appear and a bar will move across. The Calibrated Value box should show 0. Click on the Update button when it appears.
   
2. Use the arrow button to arrow down to 1 Volts and hit the MENU/ENTER button, the system is now sending 1 Volts analog signal to the Easy III amp. *Note: make sure that you hit the MENU/ENTER button so that the 1 Volt is no longer highlighted, the device doesn’t send the voltage until you press enter and the highlight goes away.
   
3. Click on the button in your Device Calibrations that is labeled 100 mm Hg. A DcCalibrationManager window will appear. Click OK.
   
4. A Calibrating window will appear and a bar will move across. The Calibrated Value box should show 100. Click on the Update button when it appears.
   
5. On the Capnocheck, hit the MENU/ENTER button again, use the arrow button to select ETCO2, then press the MENU/ENTER button. *Note: make sure that you hit the MENU/ENTER button so that the 0 Volt is no longer highlighted, and instead has the arrow.
   
6. Click Update at the bottom of your Device Calibration window.
7. At this point you can either follow the above steps to calibrate an additional channel (like CO2 Waveform) or you can Click OK to close the DC Input Calibrations box.

To Calibrate an additional signal:

In Easy III:

1. Select the channel with the CO2 Pressure (mmHg) data type from your list and click Calibrate or click the Add button, type CO2 Waveform in the Name field and use the drop down under Data Type to pick CO2 Pressure (mmHg). Check that the device is set to 0 mm Hg and 100 mm Hg on the right side of the window. 
   If not, click on the button that is incorrect and change the Calibrated Value to the desired reading.
   
2. Click on the button labeled Read voltage from attached device for each calibration value. There can be a short pause while the software connects to the amplifier after you click this button, this is normal.
3. Click on the button to the right that is labeled with Device Input.
   
4. Change the input jack in the drop down to the DC Input that you have CO2 Waveform connected to on the Easy III Amplifier (typically this will be where on the Easy III amplifier you have connected the cable with the red band from the back of the Capnocheck). You need to choose a DC Input not being used by anything else in your Data Map.
   

On the Capnocheck:

1. Use the arrow button to move to Channel 2 and hit the MENU/ENTER button.
   
2. Use the arrow button to arrow down to 0 Volts and hit the MENU/ENTER button, the system is now sending 0 Volts analog signal to the Easy III amp. *Note: make sure that you hit the MENU/ENTER button so that the 0 Volt is no longer highlighted, the device doesn’t send the voltage until you press enter and the highlight goes away.
   
   
3. Click on the button in your Device Calibrations that is labeled 0 mm Hg. A DcCalibrationManager window will appear. Click OK.
   
4. A Calibrating window will appear and a bar will move across. The Calibrated Value box should show 0. Click on the Update button when it appears.
   
5. On the Capnocheck, use the arrow button to change the selection to 1 Volt and hit the MENU/ENTER button, the system is now sending a 1 Volt analog signal to the Easy III amp. *Note: make sure that you hit the MENU/ENTER button so that the 1 Volt is no longer highlighted, the device doesn’t send the voltage until you press enter and the highlight goes away.
   
6. Click on the button in your Device Calibrations that is labeled 100 mm Hg. A DcCalibrationManager window will appear asking you to connect and if you are ready . Click OK.
   
   A Calibrating window will appear and a bar will move across. The Calibrated Value box should show 0. Click on the Update button when it appears.
   
7. On the Capnocheck, hit the MENU/ENTER button again, use the arrow button to select CO2 Waveform, then press the MENU/ENTER button. *Note: make sure that you hit the MENU/ENTER button so that the CO2 Waveform is no longer highlighted and instead has the arrow.
   
8. Click Update at the bottom of your Device Calibration window.
9. Click OK on the DC Input Calibrations window

You should be in the Edit Data Map window.

Check to see if you have entries for ETCO2 (mmHg) and/or CO2 Pressure.

Also, check to see that they are set to the DC inputs that you calibrated above.

If they do not have associated Inputs, select the blank box in the Input column to the right of the Data Type,Click on the Device tab on the left side. Click on the DC Input that your EtCO2 is plugged into.

A DC Input Calibrations box will appear. Choose EtCO2 from the list and click Select. It should fill with the settings for that channel. You can click the 0 to 100 button to alter the range that will display on the PSG trace.

Repeat for CO2 Wave as needed.

Click OK at the bottom of your Edit Data Map window. Click OK at the bottom of the Edit Data Maps window.

After calibration and adding to your Data Map, you will need to add the channels to any montages you would like to see them in. From within the Edit Montage, you will now find your EtCO2 and CO2 Waveform entries on the Data Type tab.