u-blox EVK-M91 Quick Start

Quick start for EVK-M91
UBX-19058278-R01
Setup overview
1. Download and install the u-center GNSS evalua-
tion software from www.u-blox.com/u-center.
2. Connect the unit to a PC. Options:
• Connect via USB port. The USB driver installs
automatically when the device is connected to
the PC; internet connection is required.
• Connect via RS232 port (UART interface). Set
the interface switch (2) to I2C.
• SPI / I2C: Set switch to either SPI or I2C and
connect the appropriate pins (1).
Note: Press RST after setting the switch.
3. The device must always have power, either via
USB on the back or the V5 IN pin (3) on the front.
4. Connect the provided GNSS antenna to the eval-
uation unit and place the antenna so that it has
an unobstructed view to the sky. Alternatively,
connect a GNSS simulator signal directly to the
EVK-M91 RF input.
5. Start the u-center GNSS evaluation software
and select the corresponding COM port and
baud rate.
Copyright © 2019, u-blox AG