UNICORECOMM UB4B0 User manual

Unicorecomm Confidential
WWW.UNICORECOMM.COM
INSTALLATION AND OPERATION
USER MANUAL
Data subject to change without notice.
Communications, Inc.
High Precision Board
UB 4B0
ALL-constellation GNSS
Copyright© 2009-2021, Unicore

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Revision History
Version
Revision History
Date
Ver. 1.0
First release
Aug. 2017
Ver. 1.1
Update the Dimension of UB4B0
Feb.2019
R1.3
Revise mechanical spec/add HW design notes/remove
MEMS info
2019-08-28
R1.4
Add the shield dimension
2019-10-12
R2.0
Align the installation diagram with HW ver3.1
2020-02-20
R2.1
Update Copyright time
2020-04-07
R2.2
Update BDS frequency
2020-06-30
R2.3
Fix typo and update BDS/GPS frequencies
2020-10-22
R2.4
Add the table of absolute maximum rating
2021-04-09
R2.5
Correct the indicating sequence of the LED indictor in
Chapter 4
2021-07-06
R2.6
Delete the remaining information about MEMS;
Update the maximum value of power supply
2021-08-06
Disclaimer
Information in this document is subject to change without notice and does not
represent a commitment on the part of Unicore Communications, Inc. No part of this
manual may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying and recording, for any purpose without the
express written permission of a duly authorized representative of Unicore
Communications, Inc. The information contained within this manual is believed to be
true and correct at the time of publication.
© Copyright 2009-2021 Unicore Communications, Inc. All rights RSV.

UB4B0 User Manual
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Foreword
This <User Manual> offers you information in the features of the hardware, the
installation, specification and use of UNICORECOMM UB4B0 product.
This manual is a generic version. Please refer to the appropriate part of the manual according to
your purchased product configuration, concerning CORS, RTK and Heading.
Readers it applies to
This <User Manual> is applied to the technicists who know GNSS Receiver to some
extent but not to the general readers.

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Contents
1OVERVIEW...........................................1
1.1 KEY FEATURES ........................................................................................................................1
2HARDWARE DESIGN IN CONSIDERATIONS .............2
3INSTALLATION .......................................2
3.1 PACKAGE INSPECTION.............................................................................................................2
3.2 ESD PROTECTION...................................................................................................................3
3.3 BOARD OVERVIEW...................................................................................................................3
3.4 INSTALLATION GUIDE ...............................................................................................................4
4LED INDICATORS.....................................8
5PC UTILITY CONFIGURATION (UPRECISE) ..............9
5.1 OVERVIEW ...............................................................................................................................9
5.2 OPERATION STEPS ................................................................................................................11
6FIRMWARE UPDATE (WINCONFIG) ....................12
7HARDWARE INTERFACE .............................16
7.1 ABSOLUTE MAXIMUM RATING................................................................................................16
7.2 POWER INPUT........................................................................................................................16
7.3 RF INPUT...............................................................................................................................16
7.4 EXTERNAL CLOCK INPUT.......................................................................................................16
7.5SERIAL PORTACCESS...........................................................................................................16
7.6 PIN FUNCTION........................................................................................................................17
APPENDIX I MECHANICAL DRAWING ....................20
APPENDIX II TECHNICAL SPECIFICATIONS ...............22

1
1 Overview
Thanks for purchasing and using UB4B0 GPS/BDS/GLONASS/Galileo All-Constellation
All-Frequency High Precision OEM Board. The board employs the new generation
all-constellation multi-core high precision SoC—NebulasII (432 channel tracking), which is
based on the mature baseband technology, with 55nm low power consumption, in which
built the broadband ADC and anti-interference unit, integrating two 600MHz ARM
processors and a special high-speed floating-point processor, and providing more
powerful satellite navigation signal process ability.
UB4B0 provides millimeter-level carrier-phase observation data and centimeter-level RTK
position output, supports advanced multi-path mitigation and low angle tracking; UB4B0 is
suitable for high precision surveying and mapping application, especially for geodetic
surveying, engineering survey, deformation monitoring, mechanical control,
meteorological monitoring, precision agriculture, continuous operation reference station
(CORS), advanced instantaneous RTK and long-distance RTK, etc.
Figure 1-1 UB4B0 Board
1.1 Key Features
Based on NebulasII new generation multi-system multi-frequency
high-performance SoC
432 super channels and dedicated fast acquisition engine
Support BDS, GPS, GLONASS, Galileo and QZSS, etc.
Hardware size compatible with current GNSS OEM boards

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UB4B0 User Manual
Support GPS/BDS/GLONASS/Galileo single system positioning and multi-system
positioning
Support advanced multi-path mitigation and low angle tracking
Support rover station RTK
Millimeter-level carrier-phase observation data
High reliability, high stability, suitable for challenging environment
Support RS232, Ethernet, 1PPS, external clock input
2 Hardware Design in Considerations
To keep UB4B0 functioning normally, the following signals need to be connected correctly:
The module's VCC should be monotonic when powered on, the initial level should
be lower than 0.4V, and the undershoot and ringing should be guaranteed within 5%
VCC
It is recommended to use a power chip with current output capacity greater than
2A to power the board
3 Installation
This section contains the list of the product package and the details of product installation.
3.1 Package Inspection
Please check the contents of the package carefully after receiving the package of UB4B0：
UB4B0 board and EVK suite (or evaluation board) (or enclosure)
User manual (CD attached)
Command manual (CD attached)
UPrecise software (CD attached)
MMCX antenna cable
Cross serial port cable

3
3.2 ESD Protection
A lot of components on UB4B0 are susceptible to electrostatic damage, which affects IC
circuits and other components. Please follow the instructions below for ESD protection
before open the plastic package:
Electrostatic discharge (ESD) can damage components. Please use an anti-static
work bench, a conductive foam pad, and at the same time, wearing an anti-static wrist
strap. If ESD workstation is notavailable, wear an anti-static wrist strap and attach it to
metal parts of your industrial PC in order to obtain protection against static electricity.
Please use the edge of the board, avoiding to touch the components on the board
while fetching or putting the boards
Please carefully check for obviously loose or damaged components after removing
the package from the boards. If you have any questions, please contact your local
dealer.
Please save the package boxes and plastic containers for storage and transport.
3.3 Board Overview
RF
Section Nebulas External CPU I/O
Antenna
External
Clock
Figure 3-1 Structure Diagram

UB4B0 User Manual
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1. RF Part
The receiver gets filtered and enhanced GNSS signals from the antenna via a coaxial
cable. The RF part converts the RF input signals into the IF signals, and converts IF
analog signals into digital signals required for NebulasII chip (UC4C0).
2. NebulasII SoC (UC4C0)
NebulasII (UC4C0) is Unicore’s new generation high precision GNSS SoC with 55nm low
power design, supports up to 12 digital intermediate frequency or 8 analog intermediate
frequency signals, which can track 12 navigation signals with 432 channels.
3. 1PPS
UB4B0 provides 1 PPS with adjustable pulse width and polarity and 1 output pulse width.
4. Event
1
UB4B0 provides 1 Event Mark Input.
5. I/O
Power input, data communication port, pulse trigger, LED etc.
3.4 Installation Guide
UB4B0 is delivered as a board, users can flexibly assemble according to the scenario and
the market need. Figure below shows the typical installation of UB4B0 with evaluation kit
(EVK), users can also use other enclosures to install receiver, using the same method.
1
Supported on customized versions

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Figure 3-2 UB4B0 Installation
For efficient installation, please prepare the following items before installation:
UB4B0 EVK suite (or evaluation board) (or enclosure)
User manual
Command manual
UPrecise software (CD attached)
Qualified antenna
MMCX antenna cable
PC or Laptop with serial ports (Win7 and above), with UPrecise installed
After the above preparation is made, please follow the steps below to install:
Following the steps below to install the device:
1. Align UB4B0 positioning holes and pins with EVK, and fix UB4B0 on the EVK. EVK
provides power supply and standard communication interface for the board, to

UB4B0 User Manual
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communicate with peripheral devices (such as PC, USB devices
2
, and so on).
Figure 3-3 Installation Step 1
2. Select a GNSS antenna with appropriate gain, and mount it in an open sky area.
Connect the antenna to J1 MMCX port of UB4B0 via coaxial RF cable.
Figure 3-4 Installation Step 2
NOTE: The RF connector on the board is MMCX, please select the appropriate cable. The
signal gain to the RF connector should be within 25 to 35dB. The Antenna connector
provides 5V DC antenna feed.
3. Connect the PC with EVK through serial ports, or through Ethernet ports.
2
Only for manufactory test
Antenna RF input