User's Manual

Chapter 5 - Operating modes - 61
Serial Mode
When the K4 b
2
is used in the serial mode the system works exactly as any other
conventional laboratory station. In this mode the software controls completely the K4 b
2
portable unit so that any command such as calibration can be run by the software. You
can also drive an ergometer if a second serial port is available in the PC.
1. Mask + flowmeter
2. Heart rate belt
3. Rechargeable battery
4. Harness
5. K4 b
2
Unit
6. HR probe
7. Power cable
8. Receiver unit
9. RS232 cable
10. Personal computer
Operating sequence
Warming-up the system
Warm-up the K4 b
2
for 45 minutes before testing or calibrating.
Connect the Portable unit to the PC
1. Connect K4 b
2
to the PC by the serial cable
2. Check that the Serial Port is properly selected by choosing RS 232 from the Option
menu.
3. Check the Ergometer connected to PC option box if you intend to use an
ergometer for testing.
Calibrate the system
1. Run the K4 b
2
software and choose Calibration from the Test menu.
2. In the Calibration software select Analyzers -> Room Air from the Calibration
menu.
Enter patient data
1. In the K4 b
2
software and choose Patient from the File menu.
2. Select a patient from the list or press New to enter a new name and press OK to
confirm.
sss
Note: USA and Japan
versions have the items 3
and 5 slightly different
because of the antenna
placement.