EVK-M8F-0-00 User Guide
UBX-14005459 - R04
Early Production Information
Device description
Page 9 of 21
4
Device description
4.1
Interface connection and measurement
For connecting the EVK to a PC, use a standard SUBD-9 cable and the included USB cable.
Additional measurement equipment can be connected to the front connector.
Figure 1: Connecting the unit for power supply and communication
4.2
Active antenna
EVK-M8F-0-00 evaluation kit includes a GPS / GLONASS / BeiDou antenna with a 3 m cable. It is possible to
connect various active and passive GNSS antennas with SMA connectors to the evaluation unit.
The recommended maximum antenna supply current for active antennas is 30 mA.
4.3
Evaluation unit
Figure 2 shows the front and the rear panels of the EVK-M8F-0-00 evaluation unit.
Front panel
Rear panel
Figure 2: EVK-M8F-0-00 evaluation unit – front and rear panels
4.3.1
Antenna connector
An SMA female jack is available on the front side (see RF IN in Figure 2) of the evaluation unit for connecting an
active or passive antenna. The DC voltage at the RF input is then 3.3 V. The internal short circuit protection limits
the maximum current to 60 mA. Please note that the 30 mA maximum supply current for active antenna stays
the same. The RF input connector is also ESD protected.
A jumper must be fitted between VCC_RF and VANT on the front panel connector (J4) to power an active
antenna. The jumper is delivered with the EVK-M8F kit as shown in Figure 2.
