unicorecomm UM220-IV Industry Grade Multi-GNSS User Manual

UM220-IV Industry Grade Multi-GNSS

Product Information: UM220-IV NL Industry Grade Multi-GNSS

Positioning Module

The UM220-IV NL is a high-performance Multi-GNSS (Global Navigation Satellite System) positioning module designed for use in various industrial applications. It incorporates GPS, GLONASS, Galileo, and BeiDou systems to provide accurate positioning and timing information. The module features a compact size, low power consumption, and a wide input voltage range, making it suitable for use in various industrial applications.

Key Features:

• Supports GPS, GLONASS, Galileo, and BeiDou systems
• High positioning accuracy
• Low power consumption
• Compact module size
• Wide input voltage range (3.3V – 5.5V)
• Suitable for use in industrial applications

Technical Specifications:

• Electrical Specifications:
  • Supply Voltage: 3.3V – 5.5V
  • Power Consumption: 25mA (typical)
  • Output Voltage: 0.8V – 3.3V
  • Operating Temperature: -40°C to +85°C
• Dimensions:
  • Module Size: 16mm x 12.2mm x 2.4mm
  • Antenna Connector: IPEX
• Interface:
  • UART (Default Baud Rate: 9600bps)
  • NMEA0183 Standard

Product Installation:

Before installing the UM220-IV NL module, make sure to read the user manual carefully and follow the instructions provided.

Installation Preparation:

1. Prepare the necessary tools and materials, including a soldering iron, tweezers, and a power source.
2. Make sure the voltage supply matches the module’s voltage requirements.
3. Prepare an appropriate antenna and connect it to the module’s antenna connector.

Hardware Installation:

1. Solder the module onto the PCB using a soldering iron.
2. Ensure the orientation of the module is correct before soldering.
3. Connect the power supply and antenna to the module.
4. Verify that the module is working correctly by checking for output data from the UART interface.

Product Usage:

The UM220-IV NL module is designed for use in industrial applications that require accurate positioning and timing information. It provides reliable performance even in harsh environments with minimal power consumption. The module supports various positioning modes, including single-point positioning, differential positioning, and timing mode. The output data format follows the NMEA0183 standard. The user manual provides detailed instructions on how to configure and use the module.

It is essential to ensure proper power supply and antenna connections to achieve optimal module performance. Before using the module, refer to the user manual to configure it correctly to meet your specific application requirements.

Introduction

Overview
UNICORECOMM UM220-IV M0 is a dual-system GNSS module. It is designed on the basis of UNICORECOMM’s low power, multisystem, high performance SoC-UFirebird designed. It supports BDS B1+GPS L1 dual-system joint positioning and single system positioning. UM220-IV M0 is compact in size and uses SMT pads to support fully automatic integration of standard discharge and reflow soldering, especially suitable for low cost and low power consumption fields. The radio equipment is in compliance with Directive 2014/53/EU.

Module| Model| PN| Standard| System| Interface| Data updating

rate

---|---|---|---|---|---|---
Professional| Automotive| GPS| BDS| GLONASS| QZSS| UART1| UART2|
UM220- IV NL| GB| 080101016200| ●| | ●| ●| | ●| ●| ●| 1Hz

Key Features

Power

Voltage| +3.0~3.6 VDC| | |
Power consumption1| 50mW| | |
RF Input
Input VSWR| ≤2.5| | |
Input impedance| 50Ω| | |
Antenna gain| 15～30dB| | |
Physical Characters
Dimension| 16.012.22.4mm| |
Weight| 0.8g| | |
Environment
Operating Temperature| -40℃ ~ +85℃| | |
Storage Temperature| -45℃ ~ +90℃| | |
RoHS| Accord| | |
Input/ Output Data Interface
UART| 2 UART, LVTTL. Baud rate 4800～115200bps
GNSS Performance
Frequency| BDS B1：1561.098MHz
GPS L1 ：1575.42MHz| |
TTFF| Cold Start：28s Hot Start：1s Reacquisition：1s
AGNSS2：4s| |
Positioning accuracy3| 2.0m (Dual system Horizontal, Open sky) 3.5m (Dual system vertical, Open sky)|
Velocity accuracy (RMS)| 0.1m/s(Dual system Horizontal, Open sky)|
Sensitivity4| | GN| BDS| GPS
Tracking| -160dBm| -159dBm| -160dBm
Acquisition| -147dBm| -146dBm| -147dBm
Hot Start| -151dBm| -150dBm| -151dBm
Reacquisition| -158dBm| -157dBm| -158dBm
1PPS(RMS) 5| 20ns| | |
Data update rate| 1Hz| | |
Data Output6| NMEA 0183，Unicore Protocol|

1. Continuous positioning typical value
2. Timely input of assist data
3. CEP, 50%
4. When C/N0 is 41db
5. 1hour statistics, timing is not recommended.
6. User can be configured refer to《 Unicore NPL Protocol Specification Ver.3.1》 document or update version for details

Interface

Figure 1-2 Structure Chart

UART
UM220-IV NL module COM1 is the primary serial port, which supports data transfer and firmware upgrade function. The signal input/output level is LVTTL. The default baud rate is 9600bps, and is adjustable, can be configured up to 115200bps. During design in, please ensure that COM1 is connected to a PC or an external processor for firmware upgrades.
COM2 only supports data transmission, and cannot be used for firmware upgrade purpose, reserved for future use.

1PPS
UM220-IV NL outputs 1PPS with adjustable pulse width and polarity.

Product Installation

UM220-IV M0 modules are Electrostatic Sensitive Devices and require special precautions when handling.

• Follow the steps in section 2.2 in the correct order.
• Electrostatic discharge (ESD) may cause damage to the device. All operations mentioned in this chapter should be carried out on an antistatic workbench, wear an antistatic wrist strap and use a conductive foam pad. If an antistatic workbench is not available, wear an antistatic wrist strap and connect the other end to a metal frame to play a role in anti-static.
• Hold the edge of the module, not in direct contact with the components.
• Please check carefully whether the module has obviously loose or damaged components. If you have questions, please contact us or your local dealer.

Figure 2-1 shows the typical installation of UM220-IV M0 EVK suites.

Please check the contents of the package carefully after receiving the package of UM220-IV M0:

• UM220-IV NL EVK suite (with AC Adapter）
• UM220-IV NL User manual
• uSTAR application package
• Qualified antenna
• Antenna connection cable
• Direct serial cable
• PC or Laptop with serial ports (Windows 2000/xp/win7)

Please keep the box and anti-static plastic bags for storage and handling.

Hardware Installation
After the above preparations are complete, follow the steps below to install:

• Step 1：Make sure to take full anti-static measures, such as wearing an anti-static wrist strap, grounding the workbench;
• Step 2：Open the UM220-IV M0 evaluation kit;
• Step 3：Select the GNSS antenna with appropriate gain, fix it in the non-block area, using the appropriate cable to connect the antenna to UM220 EVK;
• Step 4：Connect the PC to the EVK serial port through direct serial cable;
• Step 5：Power the evaluation board and initialize the UM220-IV M0;
• Step 6：Open the uSTAR
• Step 7：Controlled the receiver through uSTAR to display constellations view, log messages, and receiver status.

Technical Specifications

Absolute Maximum Ratings

Level 2
Level 3
TBD

Operation Condition

Dimensions

Figure 3-1 Mechanical Layout

Pin Definition (Top View)

Figure 3-2 UM220-IV NL Top View

please leave it hanging
2| AADET_N| I| LVTTL| Antenna detection
3| TIMEPULSE| O| LVTTL| Time pulse(1PPS)
4| NC| I| LVTTL| reserve
5| GPIO2| I| LVTTL| Antenna detection
6| TXD2| O| LVTTL| UART 2-TX
7| RXD2| I| LVTTL| UART 2-RX
8| NC| | | reserve
9| VCC_RF| O| =VCC| Output voltage RF section
10| GND| —| | Ground
11| RF_IN| I| | GNSS signal input (BDS B1+GPS L1）
12| GND| —| | Ground
13| GND| —| | Ground
14| NC| | | reserve
15| NC| | | reserve
16| NC| | | reserve
17| NC| | | reserve
18| NC| I/O| LVTTL| reserve
19| NC| I/O| LVTTL| reserve
20| TXD1| O| LVTTL| UART 1-TX
21| RXD1| I| LVTTL| UART 1-RX
No| Name| I/O| Electrical level| Description
---|---|---|---|---
22| V_BCKP| I| 1.65V~3.6V| Backup voltage supply
If you do not use the hot start function, connect V_BCKP to VCC. Do NOT connect it to ground or leave it floating.
23| VCC| —| 3.0V~3.6 V| Main power
24| GND| —| | Ground

PCB Packaging

Figure 3-3 UM220-IV NL Recommended PCB Packaging (unit: mil , in brackets: mm）

In the design of PCB solder, make sure the area the UM220-IV NL modules are fully covered with solder layer

Hardware Design

Design in Considerations
To make UM220-IV M0 work normally, you need to properly connect the following:

• Recommended in serial concatenated RX place 1 K Ω resistance, TX concatenated 33 Ω or 1 KΩ resistance, other need PIO concatenated 4.7 K resistor in the pin.
• Connect all the GND pins to ground.
• Connect the RF_IN signal to the antenna, and the line will keep 50Ω impedance matching.
• Ensure COM1 is connected to a PC or an external processor, users can use this serial port to receive position data. COM1 is also necessary for firmware upgrades.

In order to obtain good performance, special concern should be paid during the design:

• Power supply: Stable and low ripple power is necessary for good performance. Make sure the peak to peak voltage ripple does not exceed 50mV.
  • Use LDO to ensure the purity of power supply
  • Try to place LDO close to the module in layout
  • Widen the power circuit or use copper pour surface to transmit current
  • Avoid walking through any high-power or high inductance devices such as a magnetic coil
• UART interfaces: Ensure that the signals and baud rate of main equipment match that of UM220-IV M0 module
• Antenna interface: Make sure the antenna impedance matches, and the cable is short without any kinks , try to avoid acute angles
• Antenna position: In order to ensure a good signal-to-noise ratio, the antenna should be well isolated from any electromagnetic radiation source, especially an electromagnetic radiation in the frequency range of 1559 ~ 1605MHz
• Try to avoid designing in any circuits underneath UM220-IV M0
• This module is a temperature sensitive device. Dramatic changes in temperature will result in reduced performance, so keep it away as far as possible from any high-power high-temperature air and heating devices.

Avoid String Power
The module input ports of UM220-IV M0 include: RXD and GPIO. When the module is not powered on, if there is data input in the above ports, it will form a series of power on the module VCC. When the series voltage is higher than 1.6V, it may cause a failure of starting up when the module is powered on.

Solution:
When the module is not powered on, make sure that the IO port connected to the module is in a high-resistance state or a low level to avoid string power. Another solution is to connect a 1KΩ resistor in series to the serial port RX, and connect a 33Ω or 1KΩ resistor in series to TX (There is no need to connect any resistor to the TX of the module with PN 2310408000024). It is also recommended to connect a 4.7KΩ resistor in series to the Pin of other necessary PIOs.

Antenna
If UM220-IV M0 uses a +3V active antenna, it is recommended to use the VCC_RF pin output to power the antenna through a feed inductor.

Note: If the user has a high requirement for ESD (> ± 2000 V), the user should consider other method to feed the antenna rather than using the VCC_RF pin. In this case, it is recommended to choose a power supply chip with high ESD protection level. Gas discharge tube, varistor, TVS tube and other high- power protective devices may also be used in the power supply circuit to further protect the module from ESD damage or other Electrical Over-Stress (EOS).

If the UM220-IV M0 uses an active antenna other than +3V, the bias voltage V_BIAS required by the antenna is supplied to the antenna through a feed inductor.

If UM220-IV M0 uses a passive antenna, and the antenna is directly connected to RF_IN pin, the VCC_RF can be suspended. It should be noted that the use of passive antennas may cause a decrease in GNSS performance compared to active antennas.

Serial Port
UM220-IV M0 has one LVTTL serial port, for PC connection, please use a RS232 voltage level converter.

Disassembly

When it is necessary to remove the module, it is recommended to melt the soldering tin of the pins on both sides of the module with an electric soldering iron and remove the module with tweezers. Do not use other means to remove the module (such as using a hot air gun to blow the module), may lead to module damage.

Package

Product Label Description

Package Description
The UM220-IV M0 modules are packaged in vacuum sealed aluminum foil anti- static bags with desiccant and moisture-proof agent. When using reflow welding process to weld modules, please strictly comply with IPC standard to conduct humidity control on modules. As packaging materials such as carrier belt can only withstand the temperature of 65 degrees Celsius, modules shall be removed from the packaging during baking.

External diameter 330mm, internal diameter 100mm, width 24mm, thickness 2.0mm
Carrier Tape| Space between: 20mm

Check the humidity indicator card before soldering. The 30% indication is blue under normal conditions, as shown in figure 6-2. Bake modules firstly before soldering if the 30% indication turns pink, as shown in figure 6-3. The UM220-IV M0 modules are rated at MSL level 3, for more MSL information, please refer to www.jedec.org.

Figure 6-2 the 30% indication is blue

The shelf life of UM220-IV M0 is one year.

Clean

Do not use alcohol or other organic solvents to clean, or it may lead to flux residues flooding into the shielding shell, causing mildew and other problems.

Reflow Soldering

In order to avoid device falling off, the module should be placed on the top of the main board during welding. Reflow soldering temperature curve is recommended as shown in figure 8-1 below (M705-GRN360 is recommended for solder paste). Note: the module can only be welded once.

Note: The apertures in the stencil need to meet the customer’s own design requirements and inspection specifications, and the thickness of the stencil should be above 0.15mm, and 0.18mm is recommended.

Unicore Communications, Inc.
F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China, 100094

Website: www.unicorecomm.com
Phone: 86-10-69939800
Fax: 86-10-69939888

Email: info@unicorecomm.com

References

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