Cep Terminals GPRS-TERMINAL GT864 PY 6002 データシート
製品コード
6002
CEP AG
Revision 1.3
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2.1.2 Digital Output - GT864 PY Variant only
• switched voltage is V
IN
; high side switch
• max. Output 400mA
• short circuit protected
• short circuit protected
• ESD protected
• under full control of embedded application
• under full control of embedded application
The following command has to be used to initialise and to set the digital output:
AT#GPIO=3,1,1
output switched on
AT#GPIO=3,0,1
output switched off
2.2 Mini USB Connector
There exist several different variants of the terminal module, all in (almost) the same
housing, and all equipped with the USB-type connector:
• GT864 QUAD with Audio
The GT864-QUAD Terminal provides "audio signals" on that connector, so
you can connect a handset or microphone/speaker system here (available for
the GT864 QUAD only)
you can connect a handset or microphone/speaker system here (available for
the GT864 QUAD only)
• GT864 PY with GPIO
The programmable GT864-PY provides digital inputs on that connector, so
you can use external digital signals to control the behaviour of the terminal
thereby (available for the GT864 PY only)
you can use external digital signals to control the behaviour of the terminal
thereby (available for the GT864 PY only)
You will find the version of your GT864 terminal (PY or QUAD) at the label on the
button of the device.
By their nature all these 2 different signals are completely different regarding voltage
levels, signal direction and applied energy. Especially the audio signals are quite
sensitive to over-voltage, but they are protected against it to a limited extend only,
since otherwise the audio signal would be significantly deteriorated.
So please make sure you are using the right variant for your application and do not
mix up different variants - especially do not drive any digital signals into the
USB-type-connector of the audio-variant, since that might seriously damage
the device.