User’s manual. Audio inputs – connection and operation with
microphones, loudspeakers, push-to-talk.
Necessary tools, devices, materials
Before connecting a microphone, a loudspeaker or PTT to the terminal you should have:
1. Power supply: 10÷30V, not less than 1А
Picture 1
2. Electrical tools.
Picture 2
3. Windows-based computer with the installed program of configuration of GALILEOSKY terminals
– "Configurator". It is recommended to install the latest version of the program from the site
http://7gis.ru/support/konfigurator.html
Picture 3
SPA “GalileoSky” LLC
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User’s manual. Audio inputs – connection and operation with
microphones, loudspeakers, push-to-talk.
General information
Sound functions of GALILEOSKY terminals (hereinafter - terminal) allow you to provide two-way
voice GSM communication between a driver and a dispatcher.
The following devices can be used as sound equipment (Pic. 4):
Picture 4. PTT, microphones, loudspeakers
To get the sound of high quality it is necessary that the equipment applied had the following
characteristics:
Microphone parameters:
Parameter
Operating voltage, V
Operating current, microА
Load resistance, kOhm
Loudspeaker parameters:
Parameter
Resistance of the connected loudspeaker, Ohm
Operating current, mА
Power with the 32 Ohm loudspeaker, mW
SPA “GalileoSky” LLC
Min. value
70
1.2
Min. value
Middle value
1.60
Max. value
2.2
300
2.2
Middle value
Max. value
8
+-250
250
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User’s manual. Audio inputs – connection and operation with
microphones, loudspeakers, push-to-talk.
Connection of the sound equipment for the organization of a two-way
communication with the dispatcher
Connection of the sound equipment differs depending on the version of the used GalileoSky
terminal:
1. For GalileoSky v1.8.5 и 2.2.8 terminals the connection of a microphone and a loudspeaker is carried
out by means of specially separated contacts of the main socket (Pic. 5).
Picture 5. Connection of sound equipment to GalileoSky v1.8.5 и 2.2.8 terminals
Attention! To reduce the level of mutual influence and parasitic distortion it is necessary to
connect cable screens from the microphone and the loudspeaker to special contact of AGND.
2. various ways of connection are applied to GalileoSky v5.0 terminals depending on modification (Pic.
6, 7):
Picture 6. Connection of sound equipment to GalileoSky v5.0 terminals of modification 2
Attention! For connection of the loudspeaker and the microphone Jack 3, 5 Stereo sockets are
used. Use of Jack 3,5 Mono is inadmissible.
SPA “GalileoSky” LLC
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User’s manual. Audio inputs – connection and operation with
microphones, loudspeakers, push-to-talk.
Picture 7. Connection of sound equipment to GalileoSky v5.0 of modification 11
It is possible to connect push-to-talk KMC-25 or a compatible one directly to the terminal.
Separate connection of the loudspeaker and the microphone is allowed. The loudspeaker can have the
Jack 2, 5 Stereo or Jack 2, 5 Mono sockets.
Settings of sound equipment parameters for the organization of a twoway communication with the dispatcher
After connection of the equipment you should perform its setting. It is possible to do it in two
various ways.
1. Setting via Configurator. Go to the “Setting” tab-> “Sound” of the Configurator, set the necessary
parameters (Pic. 8) and press “Apply” button.
Picture 8. Sound setting parameters in the Configurator
Parameter «Push-to-talk КМС-25 connected» defines the mode of connected PTT. In case if this
parameter is set the loudspeaker of the PTT will give out a beep when there is an incoming call. You can
lift the handset by pressing the button of PTT for one time. Further switching between the loudspeaker
and the microphone of PTT is made by pressing the button. If the button is pressed – the microphone is
on, if not – the loudspeaker is on.
At removal of this parameter the button of PTT isn't used, and the microphone and the
loudspeaker are connected at the same time. Sound quality at such use worsens, because there is a
mutual influence between the microphone and the speaker.
2. Setting via commands. By means of the below-mentioned commands remote setting of terminal
sound functions is possible.
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User’s manual. Audio inputs – connection and operation with
microphones, loudspeakers, push-to-talk.
Command format
Parameters
GSMVolume k,m
k – GSM-channel sound gain [1÷100].
m – GSM-channel microphone gain [1÷15].
Explanation
Example
The greater the parameter, the greater the gain.
Allows speakerphone sound gain parameters to be customized.
Request: GSMVolume 75,15 Reply: GSMVOLUME=75,15
Command format
Parameters
AutoAnswer n
n – the number of calls before autoanswer. [0÷10]
Explanation
Example
If the parameter is equal to 0, the function is disabled.
An incoming call results in a device automatic answer.
Request: AutoAnswer 1 Reply: AUTOANSWER=1
Command format
Parameters
Example
Calls N
N – the number of call attempts
Request: Calls 3 Reply: CALLS:3;
The dispatcher can initiate a conversation with the driver, having sent below-mentioned
command. This function is applied when there is a need to establish a voice connection between the
driver and any phone number (for example, the director).
Command format
RingTo N
Parameters
N –a telephone number
Explanation
This command results in the device dialing the given number.
Example
Request: RingTo 89119988899 Reply: RINGTO=89119988899
Connection of sound equipment to the GALILEOSKY terminal is completed, the terminal is
ready to operate.
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