Cohda XBU-V Specification
Issue Date Version Document Number Prepared By Authorised By Reviewed By Distribution 3/6/20 1.4 386 Jay Cheah Fabien Cure Jason Boyd, Gavin Phang WW This document is offered in confidence and may not be used for any purpose other than that for which it is supplied. © Copyright Cohda Wireless Pty Ltd ABN 84 107 936 309 Cohda Wireless Pty Ltd 27 Greenhill Rd Wayville, SA 5034 Australia P +61 8 7099 5500 www.cohdawireless.
Change Log Version Date Comments 1 25/03/2019 1.1 1.2 1.3 06/05/2019 27/08/2019 29/08/2019 1.4 3/06/2020 Updated to new template from previous version and physical connector pinning. Minor cleanup Device Safety section added Canadian RF exposure statement added. Updated product label removed irrelevant certification info.
Contents Introduction ............................................................................................................................................................ 5 Functional Specification .......................................................................................................................................... 6 Processor ...........................................................................................................................................................
Cohda Wireless|Cohda XBU-V Specification | 25/03/2019 | Commercial in Confidence
Introduction This document presents the specification of the XBU optimized for underground/mining use.
Functional Specification The current XBU-V is based on the Cohda MK5 platform and shares the functionality. The unit runs an Ubuntu 16.04 LTS, providing a flexible environment for running multiple applications. They will be briefly outlined here. Processor The MK5 Application Processor is an NXP i.MX6 Dual Lite processor, providing the processing power for the ITS applications. There is also a wide selection of services available to applications.
Data Storage services MK5 provides 4GB non-volatile data storage services using on-board eMMC and standard Linux file systems. Embedded File-System The MK5 includes an embedded flash memory based file-system which is used for the storage of system firmware and small amounts of user application data. General File-System The MK5 system provides a general file-system in the form of a removable microSD card.
Physical Specification F IGURE 1 XBU-V FITTED WITH H+S ANTENNA F IGURE 2: XBU-V BOTTOM CONNECTOR VIEW Power and VIC connector Cohda Wireless|Cohda XBU-V Specification | 25/03/2019 | Commercial in Confidence
Circular Connector Description 1 CAN1 N 2 Serial RXD 3 Serial TXD 4 +VE 5 GND 6 +VE 7 CAN1 P 8 GND Drawing Female connector (Front View) T ABLE 1 P OWER AND V IC CONNECTOR The internal DC connector is a Molex Micro-fit 3.0 4 pin connector (43045-0400, with mating receptacle 043025-0400). It provides a 7VDC to 36VDC supply input. The internal CAN0 interface in the XBU has no terminating resistors mounted. These must be provided externally if required (120Ω).
Radio 5GHz Antenna Connectors The internal Ant1 and Ant2 connectors provide connectivity to the two 5GHz band diversity antennas. Each connector is a 50 Ohm, Edge mount - male/plug, Key Code Z FAKRA (6GHz) connector. IMPORTANT: Before applying power antennas (or terminators) must be connected to both 5GHz antenna connectors. Otherwise the internal PAs (Power Amplifiers) might be damaged.
84mm 11.2mm 120mm 6mm F IGURE 3 - PCB DIMENSIONS WITH MOUNTING HOLE LOCATIONS 21.
The height requirement is distributed with the board requiring 10 mm clearance below and 20mm clearance above. The board is designed to dissipate heat from underneath and thus should be coupled to a box or a base-plate via thermal pad material. The MK5 is mounted in a NEMA4 Compliant enclosure. USB-OTG Connector The USB-OTG Connector is a micro-AB USB connector, providing a USB 2.0 On-The-Go (OTG) interface (up to 480Mbps operation).
XBU-V Enclosure The enclosure is designed to comply with the following NEMA4 requirements: Indoor / Outdoor use, providing a degree of protection to personnel against access to hazardous parts Provide protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust) Provide protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); and that will be unda
F IGURE 6 - 2D OUTLINE OF THE XBU ENCLOSURE The connector openings are designed to support the following waterproof interface: LED Ethernet N-Type Connectors Serial/CAN All unused openings are sealed (2mm wall thickness) during enclosure fabrication. The side of the enclosure shall have provision for the Cohda Wireless logo and a 30mm x 40mm cleared area for regulatory (FCC, IC, UL) and Cohda’s Serial Number markings. Location of the product label is presented in Figure 7.
F IGURE 7 - LOCATION OF PRODUCT AND REGULATORY LABEL XBU Mounting Kit The XBU has a flat surface, four mounting holes and is capable of accepting a mounting bracket. Size and location of these mounting holes are illustrated in Figure 8 below. F IGURE 8 - XBU ENCLOSURE MOUNTING HOLE An example of the light weight magnet mounting kit is presented in Figure 9 and Figure 10. A stainless steel pole mount kit is also available as optional item.
Pole Mount Kit o SEI P/N: BKT-002 F IGURE 9 - POLE MOUNT KIT (ADAPTOR PLATE ) F IGURE 10 –MAGNETIC MOUNT Weight The XBU-V, including GNSS and DSRC antennas, weighs approximately 3kg.
Device Safety The device must be installed in such a way that a separation of at least 20cm or more between the device antennas and the closest unintentional human proximity is guaranteed. Otherwise compliance with radiated emission minimum human exposure regulations will become invalid.
Approval and Compliance This equipment complies with Canada radiation RF exposure limits set forth in Industry Canada RSS-102 for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and the body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
References [1] Cohda MK5 RSU specifications. CWD-P0052-RSU-SPEC-WW01-187-MK5_RSU_Specification.
Appendix Cohda Wireless|Cohda XBU-V Specification | 25/03/2019 | Commercial in Confidence
