Quectel 5G Module Series User manual

RMU500-EK User Guide

5G Module Series

Rev. RMU500-EK_User_Guide_V1.0

Date: 2020-02-18

Status: Preliminary

www.quectel.com

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Our aim is to provide customers with timely and comprehensive service. For any

assistance, please contact our company headquarters:

Quectel Wireless Solutions Co., Ltd.

Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District,

Shanghai, China 200233

Tel: +86 21 5108 6236

Email: info@quectel.com

Or our local office. For more information, please visit:

http://www.quectel.com/support/sales.htm

For technical support, or to report documentation errors, please visit:

http://www.quectel.com/support/technical.htm

Or email to: support@quectel.com

GENERAL NOTES

QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION

PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT

TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT

MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT

ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR

RELIANCE UPON THE INFORMATION. ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO

CHANGE WITHOUT PRIOR NOTICE.

COPYRIGHT

THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF

QUECTEL WIRELESS SOLUTIONS CO., LTD. TRANSMITTING, REPRODUCTION, DISSEMINATION

AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE

FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF

DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR

REGISTRATION OF A UTILITY MODEL OR DESIGN.

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About the Document

Revision History

Version

Date

Author

Description

V1.0

2020-02-18

Tom TANG/

Shaky LIN

Initial

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RMU500-EK_User_Guide                                                                                       3 / 26 
 
 
 
Contents 
About the Document ................................................................................................................................... 2 
Contents ....................................................................................................................................................... 3 
Table Index ................................................................................................................................................... 4 
Figure Index ................................................................................................................................................. 5 
Introduction .......................................................................................................................................... 6 
1.  Safety Information ................................................................................................................... 7 
General Overview ................................................................................................................................. 8 
1.  Key Features ........................................................................................................................... 8 
2.  Component Placement of EVB ............................................................................................... 9 
3.  Top View of EVB ................................................................................................................... 10 
4.  EVB Kit Accessories .............................................................................................................. 10 
EVB Components Application .......................................................................................................... 12 
1.  Power Supply ........................................................................................................................ 12 
2.  M.2 Interface .......................................................................................................................... 13 
3.  USB Interface ........................................................................................................................ 13 
4.  (U)SIM Card Connector ......................................................................................................... 14 
5.  Status Indicator ...................................................................................................................... 16 
6.  RF Cables & Antennas .......................................................................................................... 16 
6.1.  The Design for Antenna ................................................................................................. 16 
7.  Assembling Steps .................................................................................................................. 18 
Operation Procedures Illustration .................................................................................................... 22 
1.  Power on the Module ............................................................................................................ 22 
2.  Communication Via USB Interface ........................................................................................ 22 
3.  Firmware Upgrade ................................................................................................................. 23 
4.  Power off the Module ............................................................................................................ 24 
Appendix A References ..................................................................................................................... 25 

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Table Index

Table 1: Key Features .................................................................................................................................. 8

Table 2: Component Functions of the EVB ................................................................................................. 9

Table 3: Accessories List ........................................................................................................................... 10

Table 4: Pin Definition of J401 ................................................................................................................... 15

Table 5: Description of Status Indication LEDs ......................................................................................... 16

Table 6: Related Documents ...................................................................................................................... 25

Table 7: Terms and Abbreviations ............................................................................................................. 25

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RMU500-EK_User_Guide                                                                                       5 / 26 
 
 
 
Figure Index   
Figure 1: Component Placement of EVB (Top Side) ................................................................................... 9 
Figure 2: EVB Top View ............................................................................................................................. 10 
Figure 3: EVB Power Supply Interfaces ..................................................................................................... 12 
Figure 4: Connection Between RM500Q Module and EVB ....................................................................... 13 
Figure 5: USB Connector ........................................................................................................................... 13 
Figure 6: Connection Between PC and EVB ............................................................................................. 14 
Figure 7: Simplified Connector Schematic for (U)SIM Card Connector J401 ........................................... 14 
Figure 8: Pin Assignment of (U)SIM Card Connector J401 ....................................................................... 15 
Figure 9: Status Indicators ......................................................................................................................... 16 
Figure 10: Reference Design for Antenna ................................................................................................. 17 
Figure 11: Antenna Efficiency at 700~960MHz and 1.7~6GHz ................................................................. 17 
Figure 12: Antenna Efficiency at 1.7~6GHz ............................................................................................... 17 
Figure 13: Assembling Step 1 .................................................................................................................... 18 
Figure 14: Assembling Step 2 .................................................................................................................... 19 
Figure 15: Assembling Step 3 .................................................................................................................... 19 
Figure 16: Assembling Step 4 .................................................................................................................... 20 
Figure 17: Assembling Step 5 .................................................................................................................... 20 
Figure 18: Assembling Step 6 .................................................................................................................... 21 
Figure 19: USB Ports ................................................................................................................................. 22 
Figure 20: COM Port Setting Field on QCOM (USB AT Port Connection) ................................................ 23 
Figure 21: Configurations for Firmware Upgrade ...................................................................................... 23 
 
 
 

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1 Introduction

This document describes how to use the evaluation board of Quectel RM500Q module. It is an assistant

tool for engineers to develop and test the module.

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1.1. Safety Information

The following safety precautions must be observed during all phases of the operation, such as usage,

service or repair of any cellular terminal or mobile incorporating RM500Q module. Manufacturers of the

cellular terminal should send the following safety information to users and operating personnel, and

incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no

liability for customers’ failure to comply with these precautions.

Full attention must be given to driving at all times in order to reduce the risk of an

accident. Using a mobile while driving (even with a handsfree kit) causes

distraction and can lead to an accident. Please comply with laws and regulations

restricting the use of wireless devices while driving.

Switch off the cellular terminal or mobile before boarding an aircraft. The operation

of wireless appliances in an aircraft is forbidden to prevent interference with

communication systems. If the device offers an Airplane Mode, then it should be

enabled prior to boarding an aircraft. Please consult the airline staff for more

restrictions on the use of wireless devices on boarding the aircraft.

Wireless devices may cause interference on sensitive medical equipment, so

please be aware of the restrictions on the use of wireless devices when in

hospitals, clinics or other healthcare facilities.

Cellular terminals or mobiles operating over radio signals and cellular network

cannot be guaranteed to connect in all possible conditions (for example, with

unpaid bills or with an invalid (U)SIM card). When emergent help is needed in such

conditions, please remember using emergency call. In order to make or receive a

call, the cellular terminal or mobile must be switched on in a service area with

adequate cellular signal strength.

The cellular terminal or mobile contains a transmitter and receiver. When it is ON, it

receives and transmits radio frequency signals. RF interference can occur if it is

used close to TV set, radio, computer or other electric equipment.

In locations with potentially explosive atmospheres, obey all posted signs to turn

off wireless devices such as your phone or other cellular terminals. Areas with

potentially explosive atmospheres include fueling areas, below decks on boats,

fuel or chemical transfer or storage facilities, areas where the air contains

chemicals or particles such as grain, dust or metal powders, etc.

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2 General Overview

Quectel supplies RMU500-EK for designers to develop applications based on Quectel RM500Q module.

This EVB can test basic functionalities of the module.

2.1. Key Features

The following table describes the detailed features of RMU500-EK.

Table 1: Key Features

Features

Description

Power Supply

DC supply: +5V/2.5A for EVB

M.2 Interface

Support RM500Q module

(U)SIM Interface

Support (U)SIM card: 2.95V/1.8V

USB Interface

USB 3.1 & USB 2.0

Status Indication

2 LEDs are available for signal indication

Physical Characteristics

Size: 100mm × 60mm

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2.2. Component Placement of EVB

Shielding Cover

J301

J101

Shielding

Cover

J401

Type-B

D104 D107

Figure 1: Component Placement of EVB (Top Side)

Table 2: Component Functions of the EVB

Functions

Component No.

Description

Power Supply

J101

The power jack on the EVB

Typical supply voltage: +5V/2.5A

J301

USB Type-C interface

Typical supply voltage: +5V/2A

USB

J301

USB device receptacle

(U)SIM

J401

(U)SIM card connector

POWER_LED

D104

D104 (power ON/OFF indicator) indicates whether the module

power supply is ready.

WWAN_LED

D107

D107 indicates network status of the module.

DDd

D10

4

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2.3. Top View of EVB

Top view of the EVB is shown as below.

Figure 2: EVB Top View

2.4. EVB Kit Accessories

All accessories of the EVB are listed as below.

Table 3: Accessories List

Items

Description

Quantity

Cables

Type-C to dual Type-A cable

1

RF cables

4

Antennas

Antenna bracket

4

Silicone

Silicone Soft Pad

1

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Heatsink

Heatsink AL6063 black anodized

1

USB Flash Drive

Including module’s related documents, tools,

drivers, etc.

1

Screws

Used to clamp RM500Q, antennas and

heatsink to EVB

19

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3 EVB Components Application

This chapter mainly describes the following EVB components application:

 Power supply

 USB interface

 M.2 interface

 (U)SIM interface

 RF cables & antennas

It also provides information about status indication LEDs to help customers use the EVB.

3.1. Power Supply

The EVB can be powered by an external power adapter through connecting with the power jack (J101) on

the EVB. The EVB can be also powered by the USB interface through connecting with the power jack

(J301) on the EVB.

The following two figures show the power supply interfaces of the EVB.

Figure 3: EVB Power Supply Interfaces

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3.2. M.2 Interface

The M.2 connector is designed to accommodate the module. The following figure shows the connection

between RM500Q module and EVB.

Figure 4: Connection Between RM500Q Module and EVB

3.3. USB Interface

The EVB provides a Type-C USB connector J301 for connection with a host.

Figure 5: USB Connector

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Figure 6: Connection Between PC and EVB

One end of Type-A is connected to the computer and the other end is connected to the auxiliary power

supply.

3.4. (U)SIM Card Connector

The EVB has an 8-pin push-push type (U)SIM card (2.95V or 1.8V) connector J401. The following figure

shows the simplified connector schematic for J401.

(U)SIM card connector

USIM_VDD

USIM_CLK

USIM_DATA

USIM_RST

Module

J401

C1

C5

C6

C2

Push-Push

USIM_VDD

USIM_DATA

USIM_RST

USIM_CLK

USIM_DET

GND

USIM_DET

C3

C7

C4

C8

CD

GND

VPP

RESERVED

Figure 7: Simplified Connector Schematic for (U)SIM Card Connector J401

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The figure and table below illustrate the pin assignment and pin definition of (U)SIM card connector J401.

Figure 8: Pin Assignment of (U)SIM Card Connector J401

Table 4: Pin Definition of J401

Pin No.

Pin Name

I/O

Function

C1

USIM_VDD

PO

(U)SIM card power supply

C2

USIM_RST

DO

(U)SIM card reset

C3

USIM_CLK

DO

(U)SIM card clock

C4

RESERVED

/

Not connected

C5

GND

/

Ground

C6

VPP

/

Not connected

C7

USIM_DATA

IO

(U)SIM card data

C8

RESERVED

/

Not connected

CD

USIM_DET

DI

(U)SIM card insertion detection

USIM_DET function of RM500Q module is under development.

NOTE

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3.5. Status Indicator

The EVB provides two status indication LEDs. The following figure shows the positions of these LED

indicators.

Figure 9: Status Indicators

Table 5: Description of Status Indication LEDs

3.6. RF Cables & Antennas

3.6.1. The Design for Antenna

The following figure is a typical reference design for antenna.

Reference No.

Description

D104

Indicates whether the power supply for the module is ready.

Red: Power ON

Extinct: Power OFF

D107

RF status indicator for the module.

Bright: RF function is enabled;

Extinct: RF function is disabled.

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Figure 10: Reference Design for Antenna

The matching circuit is composed of C1, C2 and R1 for antenna impedance modification. By default,

value of R1 is 0Ω, while C1 and C2 are not mounted.

Figure 11: Antenna Efficiency at 700~960MHz and 1.7~6GHz

Figure 12: Antenna Efficiency at 1.7~6GHz

Module

ANT

Antenna

Π matching circuit

0Ω

R1

C1

C2

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Table 6: Recommended Antenna Specifications

All measurements are done of the antenna mounted on the recommended PCB with VNA Agilent 5071C

and OTA chamber.

3.7. Assembling Steps

Follow these steps to assemble the product.

1. Insert four RF cables.

Figure 13: Assembling Step 1

Antenna

Specification

700-6G-1

Size: TBD

Frequency Range: 0.7~6GHz

Input Impedance: 50Ω

700-6G-2

Size: TBD

Frequency Range: 0.7~6GHz

Input Impedance: 50Ω

1700-6G-1

Size: TBD

Frequency Range: 1.7~6GHz

Input Impedance: 50Ω

1700-6G-2

Size: TBD

Frequency Range: 1.7~6GHz

Input Impedance: 50Ω

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2. Stick the thermal pad, insert the module and lock the screw.

Figure 14: Assembling Step 2

3. Connect the EVB and module with RF cables in accordance with the figure below.

Figure 15: Assembling Step 3

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