User guide
English
Your wall charger and USB adaptor cable serve 
two purposes:
1. Charging the G4 from any A/C wall socket or 
from a USB port on your computer (charging 
time from computer takes longer).
2. Downloading software upgrades from any PC running 
Windows® XP™, Vista™ or Windows 7™. (see section 4.4 for details).
4.  BASIC SETUP AND CONFIGURATION
4.1 GENERAL FUNCTIONS
DESIRED RESULT REQUIRED ACTION
Turn on the G4
Press the Mobile Button steadily for at least four 
seconds
LED indication: Three blue ashes
Audio feedback: Ascending tone (low-high)
Turn o the G4
Press the Mobile Button steadily for at least three 
seconds
LED indication: Three red ashes
Audio feedback: Descending tone (high-low)
Increase / Decrease the 
volume of the current 
audio source
Tap the Volume Up or Volume Down Button (sets 
and saves the volume per source)
Mute Tap simultaneously Volume Up and Volume Down 
while any audio is on
Battery Level 
Indicator
Press and hold the Volume Up Button for three 
seconds
Blue light = Battery is fully charged
Red/blue light = Battery is half full
Red light = Battery is almost empty
4.2 SETTINGS CUSTOMIZATION:
The G4 oers various customizable settings which allow you to 
personalize the device based on your preferences. Among these 
settings, you can:
• Enable/Disable Spoken Status Announcements which provide 
your connectivity status, i.e. whether you are in mobile phone or 
intercom mode, and conrm changes of such modes. By default 
the feature is ON.
• Set custom AGC and VOX sensitivity levels suited to your specic 
riding style and conditions.
NOTE: G4 settings can be customized in two ways:
• Via the free Cardo Upgrades software available for download from 
www.cardosystems.com (requires PC and cable-connected device 
(cable included). See section 4.4.
• Via the Settings Customization Voice Menu and the buttons on your G4 
unit - see below).
Entering the Settings Customization Voice Menu on your G4:
The Settings Customization Voice menu can be heard in any one of 
the available languages. In future, more languages will be available for 
download from our website (see section 4.4 for Software Upgrade).
Press and hold the CHANNEL “A” button and CHANNEL “B” button 
simultaneously for 3 seconds while on standby. After entering the 
system, follow the voice instructions in English or choose your 
preferred language.
4.3 AUDIO SOURCES AND PRIORITIES
The dierent audio sources connected to the G4 are prioritized as 
shown below, i.e. the higher priority source will always override and 
interrupt the lower one. 
5
scala rider
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 G4
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