Telit EVK2 Evaluation Kit

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3990150474

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Telit EVK2 Evaluation Kit
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Product description

The Telit Evaluation Kit (EVK2) provides a robust, future-proof and flexible environment for rapid development of applications for the full range of GSM/GPRS, UMTS/HSDPA and CDMA module families, dramatically reducing time-to-market.

The kit is comprised of a motherboard, and an adapter board in which the relevant module is connected. This concept allows the EVK2 to be used across various form factors and product generations, both present and future. The motherboard includes the basic interfaces, such as power input, SIM card holder, audio monitor outputs, RS-232, and USB 1.1, as well as a Reset button and power switch.

The motherboard represents the recommended reference design for the module's peripheral circuitry. Jumper blocks on the motherboard define the routing of the serial interfaces, audio signals, and power supply. The PC or DTE controlling the module over the AT-command interface can be connected via USB or RS-232.

Adapter boards are available in different models to allow development for the desired module family (board-to-board or BGA solder). The set of basic interfaces found on by the motherboard. The set of interfaces specific to the module (e.g. antenna, general purpose inputs/outputs (GPIO), ADC/DAC, UART etc.) is found on the adapter board for connection to the user’s application, extension boards, or other development tools and measuring equipment.

Technical specifications

The Telit EVK2 is a tool for:

  • Developing applications based on current
    and future Telit GSM/GPRS, UMTS/HSDPA,
    and CDMA module families via AT commands
    through serial ports
  • Programming and updating of all
    Telit modules
  • Debugging Telit-module-based applications
  • Implementing simple applications
    (stand alone function) by executing scripts
    using a Python interpreter equipped module
    without the need fo an external microprocessor

RS-232 / USB 1.1 serial ports

The communication between the
application and the Telit module is done
through Asynchronous Serial Interfaces
board as a double stacked standard DB9
connector providing two serial communication
ports (RS-232 up to 115 Kbps).
Alternatively, this communication can be
done through a CMOS HUB, which provides
two-way communication compliant to USB
1.1 specifications at higher data rates
(up to 1,5 Mbps). The USB connection is
provided through a USB-A USB-B cable.
Serial port selection is made through configuration
of jumpers on the motherboard.

Power supply inputs

The EVK2 is equipped with different power
supply inputs enabling its use it in the following
environments:

  • Automotive setup:
    5 to 40 Volt supply
  • Laboratory setup:
    + 3.8 Volt fixed supply
  • Portable setup:
    Rechargeable Li-Ion battery pack

General purpose inputs / outputs

With the EVK2, all general purpose
inputs/outputs are made accessible on
the adapter boards by a set of pins on the
PTH-type connector.
This allows developers to build their own
interface boards best suited for their
requirements, e.g. custom connectors,
cables, relays, LEDs, etc.

Interfaces

  • Power supply:
    Automotive setup - 5 to 40 Volt supply
    Laboratory setup: from
    + 3.8 Volt fixed supply
  • Reset & Power ON button: Yes
  • Battery charger control: From Telit module
  • OV protection: On all DC inputs
  • Reverse polarity protection: On all DC inputs
  • LED indicators: 2
  • SIM card holder: Yes
  • GPIOs: Yes
  • Serial ports: 2x RS-232, 2x USB 1.1
  • Mute control: Automatic
  • Speaker output: 2 output power options:
    1) max 10mW / 16 Ohms on standard 2.5mm headset socket
    2) max 675mW / 8 Ohms on PTH pin connector
  • Microphone lines: 1x Single-ended (INT/EXT)
  • Earpiece output: 1x Single-ended (INT/EXT) max 10mW / 16 Ohms
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