16a This diagram shows that the device has detected an electrode fault on channel 3. This may mean that:
- there is no electrode connected to this channel;
- the electrodes are defective or old and the contact is poor: in this case, try using new electrodes;
- the electrode cable is defective: to chek it, try using another electrode cable.
Need for Recharging
17a The small battery symbol flashes: The charge level of the batteries is getting low. Stop the training session and recharge the device.
17b The charge level indicator (column) flashes as well: The charge level of the batteries is very low. It is essential at this point to recharge the device before it stops working.
17c The "START" symbol is no longer visible: The charge level of the batteries is completely empty. You cannot use the device any longer; recharge it immediately.