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EVK-M8U Folha de dados(PDF) 7 Page - u-blox AG |
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EVK-M8U Folha de dados(HTML) 7 Page - u-blox AG |
7 / 27 page EVK-M8U - User Guide UBX-15023994 - R05 Device description Page 7 of 27 3 Device description 3.1 Interface connection and measurement For connecting the EVK to a PC, use a standard SUBD-9 cable and the included USB cable. The use of RS232 and external power supply is optional. USB provides both power and a communications channel. Figure 1: Connecting the unit for power supply and communication 3.2 Active antenna The EVK-M8U evaluation kit includes a GPS / GLONASS / BeiDou antenna with a 3 m cable. It is possible to connect various active and passive GNSS antennas to the evaluation unit with SMA connectors. The recommended maximum antenna supply current for active antennas is 30 mA. 3.3 Evaluation unit Figure 2 shows the front and the rear panel of the EVK-M8U evaluation unit. Front panel Rear panel Figure 2: EVK-M8U evaluation unit – front and rear panels 3.3.1 Antenna connector An SMA female jack is available on the front side (see Figure 2) of the evaluation unit for connecting an active or passive antenna. The EVK provides a DC supply at the RF input of 3.3 V for active antennas. The maximum supported antenna current is 30 mA; internal protection limits the maximum short circuit current to 60 mA. To avoid the damage of RF input caused by ESD or electrical overstress, and to seek maximum consistency and repeatability of performance independently of the RF component used, the EVK- M8U has an onboard LNA. ⚠ The connector is only to be used with a GNSS antenna or simulator. Do not connect this equipment to cable distribution systems. |
Nº de peça semelhante - EVK-M8U |
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Descrição semelhante - EVK-M8U |
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