neousys NRU-52S Jetson Xavier NX Ruggedized Edge AI Computer User Guide

NRU-52S
Quick Installation Guide

Warning

• Only qualified service personnel should install and service this product to avoid injury.
• Observe all ESD procedures during installation to avoid damaging the equipment.

Preparing tools

Unpack the equipment and make sure the following tools are available and the delivered contents are correct before you begin the installation procedure.

1-1. User-provided tools
• Anti-static wrist wrap
1-2. Packing List

NRU-52S Front Panel

block is also used for Ignition signal input
block (DC/
ignition control)
2| Force recovery| Use for system recovery or system reflash purposes
button
3| Micro SIM slot| Couple with M.2 B key for LTE/ 5G NR
4| MicroSD slot| Front accessible MicroSD slot for easy data access
5| DisplavPort| The DisplayPort is a high-resolution graphics output supporting up to 3840 x 2160 @ 30Hz
output
6| USB 3.1 Gent| USB 3.1 Gerd port, up to 5 Gbit/s data transfer bandwidth
port
7| CAN bus Dort| Compatible with both industrial and in-vehicle applications, it supports CAN2.OA and CAN2.0B up to 1Mbps
8| micro-USB Dort| The micro-USE port is reserved for system reflash purposes
9| COM port| For communicating with external devices
10| System status| Three system LEDs, ignition control (IGN), (OS), and power (PWR)
LED
11| Power button| Use this button to turn on or shutdown the system

3-pin DC Terminal Block

The system allows an 8 to 35V DC power input from via a 3-pin pluggable terminal block. The screw clamping mechanism is a reliable way to wire
DC power. In addition to DC power, this terminal block also accepts ignition signal input (IGN).

Warning
Please make sure the voltage of DC power is correct before you connect it to the system. Supplying a voltage over 35V will damage the system.

Force Recovery Button

The force recovery button is reserved for engineering or system reflash purposes.
Please follow the below steps to boot NRU-52S into recovery mode for reflash:

1. Make sure the ignition power mode is set to 0.
2. Make sure the system has powered down.
3. Press and hold down the force recovery button.
4. Simultaneously press the power button.
5. After 5 seconds, release the force recovery button.
6. The NRU-52S has booted into force recovery mode and can be reflashed via the microUSB cable.

Micro SIM Slot

The Micro SIM slot can be coupled with the M.2 B key and five antenna holes for 4G LTE or 5G NR module expansion.

MicroSD Slot

DisplayPort

The system has a DisplayPort (DP) output which is a digital display interface that mainly connect video source and carry audio to a display device. When connecting a DP, it can deliver up to 4K UHD (3840 x 2160 @ 30Hz) in resolution. The system is designed to support active DP adapter/ cable from NVIDIA’s recommended display adapters. You may refer to NVIDIA’s page to find more information:
(https://nvidia.custhelp.com/app/answers/detail/a_id/4449 /~/nvidiarecommended-display-adapter)

USB3.1 Gen1

The system offers two USB3.1 Gen1(SuperSpeed USB) ports on its front panel. They are backward compatible with USB 2.0, USB 1.1 and USB 1.0 devices.

CAN bus Port

CAN bus is a robust industrial bus with a pair of differential signals and is commonly used in various industrial and in-vehicles applications. The system is equipped with a CAN bus DB9 port that is compatible with both industrial and in-vehicle applications.
The CAN bus port supports CAN2.0A and CAN2.0B up to 1Mbps.

MicroUSB Port

Reserved for system maintenance only.

COM Port

The COM port is a hardware configurable RS-232/ RS-422/ RS-485 port. By default, the port is set up as an RS-232 port. To set up the port for RS-422/485 operations, please refer to the user manual.

COM Port Definition

System Status LED

There are three LED indicators on the front panel: IGN, OS and PWR. The descriptions of these LEDs are listed in the following table.

Power Button

The power button is a non-latched switch for ATX mode on/off operation. Press to turn on the system, PWR LED should light up and to turn off, you can either issue a shutdown command in the OS, or just press the power button. In case of system halts, you can press and hold the power button for 5 seconds to force- shutdown the system. Please note that there is a 5 seconds interval between two on/off operations (i.e. once turning off the system, you will need to wait for 5 seconds to initiate another power-on operation).

NRU-52S Series Rear Panel

DI and 4-CH isolated DO
2| Gigabit PoE++ .orts| Gigabit PoE++ port can provide both data and electric power to devices.
3| Groundin Mint| Chassis grounding point

DIO & GPS PPS Port

The DO is followed by open-drain design, i.e., the output voltage is decided by the external power source. We recommend to design the external power source between 5V to 24V. The DI treat 0 to 1.5V voltage input as 0 and treat 5 to 40V voltage input as 1. In Linux, each GPIO is mapped to a virtual folder. And the PPS0 is defined in our official device tree. Please refer to the following table for information on wiring and programming the isolated DIO channels.

Initialization

sudo -s
echo 446 > /sys/class/gpio/export # SOM_GPO0
echo out > /sys/class/gpio/gpio446/direction
echo 0 > /sys/class/gpio/gpio446/value
echo 447 > /sys/class/gpio/export # SOM_GPO1
echo out > /sys/class/gpio/gpio447/direction
echo 0 > /sys/class/gpio/gpio447/value
echo 448 > /sys/class/gpio/export # SOM_GPO2
echo out > /sys/class/gpio/gpio448/direction
echo 0 > /sys/class/gpio/gpio448/value
echo 445 > /sys/class/gpio/export # SOM_GPO3
echo out > /sys/class/gpio/gpio445/direction
echo 0 > /sys/class/gpio/gpio445/value
echo 443 > /sys/class/gpio/export # SOM_GPI1
echo in > /sys/class/gpio/gpio443/direction
echo 444 > /sys/class/gpio/export # SOM_GPI2
echo in > /sys/class/gpio/gpio444/direction
echo 441 > /sys/class/gpio/export # SOM_GPI3
echo in > /sys/class/gpio/gpio441/direction

Set DO Value
The following example takes DO0 as an example. The GPIO number for DO0 is 446 sudo -s # Set DO0 to 0
echo 446 > /sys/class/gpio/export # SOM_GPO0
echo out > /sys/class/gpio/gpio446/direction
echo 0 > /sys/class/gpio/gpio446/value # Set DO0 to 1
echo 446 > /sys/class/gpio/export # SOM_GPO0
echo out > /sys/class/gpio/gpio446/direction
echo 1 > /sys/class/gpio/gpio446/value Read DI Value
The following example takes DI3 as an example. The GPIO number of DI3 is 441 cat /sys/class/gpio/gpio441/value

IEEE 802.3at Power over Ethernet Port

The Gigabit PoE ++ port supply power and data on a standard CAT-5 or better Ethernet cable. Acting as a PSE (Power Sourcing Equipment), compliant with IEEE 802.3bt, it has a total power budget of 144W while each port can deliver up to 90W to a Powered Device (PD). PoE automatically detects and determine if the connected device is PoE PD or not before supplying power, making it compatible with standard Ethernet devices as well. There are screw-lock holes (indicated in red ) for each port to ensure cables are tightly secured.

Active/Link LED

Speed LED

Grounding Point

The system offers EMI protection with an isolated PCB design. If you are powering the NRU-52S using an isolated power supply, please make sure the chassis grounding point is connected.

References

• NVIDIA Recommended Display Adapters | NVIDIA

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