Figure 5: Positions of the chest wall leads
5.6 Functional Check
Every time the ECG measuring unit is switched on, it carries out an integrated self-test. Error conditions in the electronics
or program run are indicated on the display with “Err” and an error code.
Figure 6: Display of error codes
Visually inspect the ECG measuring unit before every use. If any external damage to the device or the electrode cables is
noted or if the integrated self-test fails, do not continue to use it. Contact the distributor or manufacturer to have the
device repaired or replaced, please refer to the contact information at the start of this manual.
6. OPERATING THE VITALOGRAPH BT12 ECG
6.1 Pairing the ECG device
The first time a connection is established with a monitor such as a PC running appropriate software, the ECG measuring
unit is paired to this monitor. If the Bluetooth driver requests a PIN number during this pairing operation, enter “1111”.
To avoid data transmission errors and to deny access to unauthorized parties, the ECG measuring unit is no longer
visible to other Bluetooth devices after this pairing. This pairing can be broken by following the instructions below -
1. Turn on the device by pressing the power button.
2. Once the device is on press and hold the power button for 20 seconds.
3. The device will emit beeps during this process, 1 x long beep after 3 seconds and 2 x short beeps after 20
seconds and then it switches off. After switching on again the ECG measuring unit is visible to other Bluetooth
devices and may be paired to a new monitor.
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