GETTING STARTED
Dragonfly
™
Nano MTQN-MNG3-B01 Device Guide
19
USB Driver Installation
For the Windows USB driver, refer to the SARA-R4 USB Driver Installation Guide on the product page of the
MultiTech website. The driver is located under the Downloads section of the product page.
For the Linux USB driver, if your Linux OS does not automatically detect your device, you may need to execute a
script. This script adds the MTQN vendor ID and product ID to the USB serial driver. Download the zip file which
contains this script and readme file under Downloads on the product page of the website.
USB Cable Recommendations
If your device has a USB connector, to avoid enumeration or power issues:
Use a high-speed USB cable that is as short as possible.
Use a well-shielded cable with at least 24 AWG wire pair for power/ground and 28 AWG wire pair for data
lines.
If possible, use a USB port that connects directly to the motherboard rather than a USB port with added
cabling inside the computer chassis.
Use USB 3.0 ports if available. These ports are typically rated for more current.
You can order the USB cable through MultiTech. The part number is: CA-USB-A-MICRO-B-3.
Device Reset
MTQN-MNG3-B01
There are two components to reset.
1.
Processor reset: Several reset methods are available and all are documented in the STM32L471QG
reference guide.
2.
Radio reset: The processor controls the RESET_N and PWR_ON pins to the radio. The functionality of
those pins is described in the ublox SARA_R4 data sheet.
