Vantron VT-MOD-CELL-B48 Instructions for use

VT-MOD-CELL-B48 Hardware User Manual
Product Version: 1 0
Date: 2021-11-16
For any question, please contact Chengdu Vantron Technology Co., Ltd.
Copyright © Vantron Technology. All rights reserved.

Change History
This table describes the version and release date.
Rev Date Description Author
1.0 0 1-11-16 First release. Zhihui Sun

Foreword
Copyright
While all information contained herein have been carefully checked to assure its
accuracy in technical details and printing, Vantron assumes no responsibility resulting
from any error or features of this manual, or from improper uses of this manual or the
software. Please contact our technical department for relevant operation solutions if
there is any problem that cannot be solved according to this manual.
Vantron reserves all rights of this manual, including the right to change the content,
form, product features, and specifications contained herein at any time without prior
written notice.
The trademarks and registered trademarks in this manual are properties of their
respective owners. No part of this manual may be copied, reproduced, translated or
sold. No changes or other purposes are permitted without the prior written consent of
Vantron.
Vantron reserves the right of all publicly-released copies of this manual.
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Type Description
Notice Important information and regulations
Caution Caution for latent damage to system or
harm to personnel
Statement & Disclaimer
It is recommended to read and comply with this manual which provides important
guidance and helps decreasing the danger of injury, electric shock, fire, or any damage
to the device.
Vantron assumes no legal liability of accidents resulting from failure of conforming to
the safety instructions.

Limitation of Liability/Non-warranty
For direct or indirect damage to this device or other devices of Vantron caused by
failure of conforming to this manual or the safety instructions on device label, Vantron
assumes neither warranty nor legal liability even if the device is still under warranty.
The device should be installed, debugged and maintained by professionals.
The outside antennas are not permitted to be installed or to be changed by non-
professionals. To run the device normally, only specified antennas are approved to be
assembled together by professionals.
Unit shall use indoor-use antenna only. No antenna for this unit can be installed
outdoors.
Safety Instructions
 Keep and comply with all operation instructions, warnings, and information.
 Pay attention to warnings on this device.
 Read the following precautions so as to decrease the danger of injury, electric
shock, fire, or any damage to the device.
 Operations and service instructions are provided with the equipment.
 Unit shall be used with indoor-use antenna only. No antenna for this unit can be
installed outdoor.
 The maximum operation temperature is 61°C.
Precautions
 Pay attention to the product labels/safety instructions printed on silk screens.
 Do not try repairing this product unless declared in this manual.
 Keep away from heat source, such as heater, heat dissipater, or engine casing.
 Do not insert other items into the slot (if any) of this device.
 Ensure ventilation of the ventilation slot.
 System fault may arise if other items are inserted into this device.
 Installation: ensure correct installation according to instructions from the
manufacturer with recommended installation tools.
 Ensure ventilation and smoothness according to relevant ventilation standards.

Safety Instructions for Power Cables and Accessories
Use Proper power source only. Start only with power source that satisfies voltage
label and the voltage necessary according to this manual. Please contact technical
support personnel of Vantron for any uncertainty about the requirements of
necessary power source.
Use tested power source. This product still contains a button lithium battery as a
real-time clock after its external power source is removed and therefore should not
be short-circuited during transportation or placed under high temperature.
Place cables properly: Do not place cables at any place with extrusion danger.
Cleaning Instructions
 Please power off before cleaning the device.
 Do not use spray detergent.
 Clean with a damp cloth.
 Do not try cleaning exposed electronic components unless with a dust collector.
 Support for special fault: Power off and contact technical support personnel of
Vantron in case of the following faults:
 The device is damaged.
 The temperature is excessively high.
 Fault is still not solved after operations according to the manual.

Contents
1. OVERVIEW .............................................................................................................................. 1
1.1 D ESCRIPTION ................................................................................................................................................ 1
1.2 M ODULE F UNCTION ...................................................................................................................................... 1
1.3 A CRONYM .................................................................................................................................................... 2
2. INTERFACE ............................................................................................................................. 3
2.1 O VERVIEW ................................................................................................................................................... 3
2.2 G ENERAL LCC I NTERFACE ............................................................................................................................... 3
3. ANTENNA INTERFACE ............................................................................................................ 7
3.1.1 Antenna interface Connector .................................................................................................... 7
3.1. Antenna Installation ................................................................................................................... 7
3.1.3 Typical RF Performance Characteristics .................................................................................. 8
4. INTERFACE ELECTRICAL CHARACTERISTICS ..................................................................... 9
4.1 O VERVIEW ................................................................................................................................................... 9
4.2 A BSOLUTE M AXIMUM R ATINGS ....................................................................................................................... 9
4.3 T EMPERATURE ............................................................................................................................................ 10
4.4 D IGITAL S IGNAL DC C HARACTERISTICS ............................................................................................................. 10
4.5 P OWER S UPPLY AND C ONSUMPTION ............................................................................................................... 10
4.5.1 Input Power Supply ................................................................................................................. 10
4.5. Power Consumption ................................................................................................................ 11
4.5.3 Boot Procedure ....................................................................................................................... 11
5. INTERFACE ELECTRICAL CHARACTERISTICS ................................................................... 12
5.1 O VERVIEW ................................................................................................................................................. 12
5.1.1 USIM card interface ................................................................................................................. 1
5.1. Power interface ....................................................................................................................... 1
5.1.3 USB bus .................................................................................................................................. 1
5.1.4 LED status indication .............................................................................................................. 1
5.1.5 RESET interface ..................................................................................................................... 1
5.2 USIM C ARD I NTERFACE ............................................................................................................................... 12
5. .1 USIM Interface Schematic Reference ..................................................................................... 13
5. . Design Guide........................................................................................................................... 15
5.3 P OWER I NTERFACE ...................................................................................................................................... 15
5.4 USB S IGNALS ............................................................................................................................................. 1

5.5 S TATUS I NDICATION S IGNALS ......................................................................................................................... 1
5. R ESET I NTERFACE ........................................................................................................................................ 17
5.7 R ECOVERY M ANUFACTURE C ONFIGURATION .................................................................................................... 17
MECHANICAL SPECIFICATIONS ................................................................................................... 18
6. TIPS ....................................................................................................................................... 19
7 FCC WARNING STATEMENT ................................................................................................... 21
APPENDIX A: HOW TO CONTACT S ........................................................................................... 24

VT-MOD-CELL-B48 Hardware User Manual
1
1 Overview
1 1 Description
This chapter has outlined the VT-MOD-CELL-B48 LTE module, including:

VT-MOD-CELL-B48 LTE module function

Acronym
1 2 Module Function
The functions and characteristics of VT-MOD-CELL-B48 LTE module are shown as follows:

GCT chipset: GDM7 43QT

Comply to 3GPP Release10 CAT6

Support Band48

Support channel bandwidth of 5M/10M/15M/ 0M

Provide LCC interface, interface signals include:
-Power supply
-1 USIM card signal (Support 3.0v or 1.8v)
-1 high speed USB .0 interface

Provide 4 antenna interfaces

Support standard AT instruction set

Meet ROHS environmental requirements
Table 1-1 Key features of VT-MOD-CELL-B48 LTE module
Feature Description
Maximum Transmit Power
1dBm+1/- dBm
Operating Temperature
Operating Temperature: - 0 ℃ ~ +65 ℃
Operating Temperature (Reduced RF
performance): -30 ℃ ~ +70 ℃
Storage Temperature: -40 ℃ ~ +85 ℃
Power Voltage
3.15V ~ 4. V (3.3V recommended)
Consumption (Current) Band48; MAX: 550mA
AT Instruction Support standard AT instruction settings
LCC Interface
Power and Ground
1 USIM card signal (Support 3.0v or 1.8v)
1 high speed USB .0 Interface
External Interface 4 antenna interfaces
Environmental Requirements RoHS

VT-MOD-CELL-B48 Hardware User Manual
1 3 Acronym
Table 1- Acronym list
Acronym Full Name
CA Carrier Aggregation
EMC Electromagnetic Compatibility
ESD Electrostatic Discharge
E-UTRA Evolved Universal Terrestrial Radio
Access
IEC International Electro technical
Commission
IMEI International Mobile Equipment
Identity
I/O Input/output
ISO International Standards Organization
ITU International Telecommunications
Union
kbps kbits per second
LED Light Emitting Diode
NTC Negative Temperature Coefficient
PCS Personal Cellular System
PCI Peripheral Component Interconnect
PDU Packet Data Unit
PPP Point-to-point protocol
PS Packet Switched
QPSK Quadrate Phase Shift Keying
TCP/IP Transmission Control Protocol/
Internet Protocol
UART Universal asynchronous receiver-
transmitter
UIM User Identified Module
USB Universal Serial Bus

VT-MOD-CELL-B48 Hardware User Manual
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2 Interface
2 1 Overview
This chapter mainly introduces the external interfaces of VT-MOD-CELL-B48 LTE
module, including:

LCC Interface

Antenna Interface
2 2 General LCC Interface
Interface Signals
Table -1 Definition of interface pins
Pin No Pin Name
Direction
(Refer to module)
Pin Definition Remarks
1 Reserved floating
Reserved floating
3 SPI_CS # O SPI chip selection If not use, floating
4 SPI_MISO I SPI data bus (Master
input, Slave Output)
5 SPI_SCLK O
6 SPI_MOSI O SPI data bus (Master
input, Slave Output)
7 GND
8 UART1_TXD O UART1 data transmit
9 UART1_RXD I UART1 data receive
10 UART0_TXD O UART0 data transmit Debug interface
11 UART0_RXD I UART0 data receive
1 WPS_KEY WPS button
13 GND
14 SDH0_D3
SDIO0 data 3 SDIO0 interface for
.5G Wi-Fi; if not used,
floating;
15 SDH0_D
SDIO0 data
16 SDH0_D1
SDIO0 data 1
17 SDH0_D0
SDIO0 data 0
18 SDH0_CMD
SDIO0 data command
19 SDH0_CLK
SDIO0 clock
0 GND
1 Reserved Floating
WI-FI_RST# O Wi-Fi reset Wi-Fi reset
3 GPIO_GPD4 O GPIO
LTE RF Signal
Strength 3
4 GPIO_GPD O GPIO
LTE RF Signal
Strength 1
5 GPIO_GPD6 O GPIO
.4G Wi-Fi_LED
&WPS_LED
6 GPIO_GPD3 O GPIO
LTE RF Signal
Strength

VT-MOD-CELL-B48 Hardware User Manual
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7 GPIO_GPD5 O GPIO
LTE RF Signal
Strength 4
8 GPIO_GPD8 O GPIO INTERNET_LED
9 GPIO_GPD7 O GPIO USIM status indicator
30 Reserved Floating
31 GND
3 RGMII_TCLK O RGMII TX clock RGMII TX interface
33 RGMII_TCTL O RGMII TX control
34 RGMII_TXD3 O RGMII TX data 3
35 RGMII_TXD O RGMII TX data
36 RGMII_TXD1 O RGMII TX data 1
37 RGMII_TXD0 O RGMII TX data 0
38 GND
39 USB .0_DM USB .0- USB .0
40 USB .0_DP
USB .0+
41 USB3.0_SSTX-
USB3.0 TX- USB3.0
4
USB3.0_SSTX
+
USB3.0 TX+
43 USB3.0_SSRX-
USB3.0 RX-
44
USB3.0_SSRX
+
USB3.0 RX+
45 GND
46 RGMII_RXD0 I RGMII RX data 0 RGMII RX interface
47 RGMII_RXD1 I RGMII RX data 1
48 RGMII_RXD I RGMII RX data
49 RGMII_RXD3 I RGMII RX data 3
50 RGMII_RCTL I RGMII RX control
51 RGMII_RCLK I RGMII RX clock
5 Reserved Floating
53 GND
54 RGMII_MDC
RGMII manage interface
clk
55 RGMII_MDIO
RGMII manage interface
56 GND
57 TDO
JTAG If not use, floating
58 TCK
59 TDI
60 TMS
61 SIM_RST_O
USIM reset Sim card
6 SIM_CLK_O
USIM clock
63 SIM_VCC
USIM VCC
64 SIM_DATA_O
USIM DATA
65 Reserved Floating
66 GND
67 3. V-5V_MAIN
Module Power input Module VCC input
68 3. V-5V_MAIN
69 GND
70 DCDC_1.8V VCC 1.8V output
Can be used for IO
Voltage; if not use,
floating

VT-MOD-CELL-B48 Hardware User Manual
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71 DCDC_3. V
VCC 3. V output
Can be used for IO
Voltage; if not use,
floating
7 GND
73
SDH1_CLK_P
CM_IN
SDIO1 clk SDIO1
74 SDH1_D0
SDIO1 data0
75
SDH1_CMD_P
CM_OUT
SDIO1 command
76
SDH1_D3_SLI
C_RESET#
SDIO1 data 3
77
SDH1_D _SLI
C_INT#
SDIO1 data
78
SDH1_CD#_P
CM_SYNC
79 SDH1_D1
SDIO1 data 1
80
SDH1_WP_PC
M_MCLK
81 GND
8
WAKEUP#_7
43
WI-FI wake up host CPU
83 GPIO_GPD1
GPIO
84 RESET#_KEY I KEY reset, low active KEYRESET
85 PHY_RESET# O PHY reset
， low active PHY RESET
86 PWR_EN If not use, floating
87 Reserved Floating
88 Reserved Floating
89 RESET#_OUT O Reset output
90 GND
91 GND
9 Reserved Floating
93 Reserved Floating
94 GND
95 GND
96 Reserved
Reserved
97 GND
98 GND
99 GND
100 Reserved
Reserved
101 GND
10 GND
103 NC
104
GPIO_GPD15_
FACT# I GPIO
Restore to factory
configuration
105 GPIO_GPD9
106 GPIO_GPD13
107 GPIO_GPC16
108 NC
109 GND
110 GND
111 Reserved
Reserved

VT-MOD-CELL-B48 Hardware User Manual
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11 GND
113 GND
114 GND
115 Reserved
Reserved
116 GND
117 GND
118 Reserved Floating
119 Reserved Floating
1 0 GND
Note 1: In Table -1, P: power supply pin; I: digital signal input pin; O: digital signal
output pin; I/O: signal input/output.
Note : Reserved GPIO can be customized, such like LED indicator.
Note 3: For details about the description, functions and usage of each pin listed in
Table -1, please refer to the related chapters.

VT-MOD-CELL-B48 Hardware User Manual
7
3 Antenna Interface
3 1 1 Antenna interface Connector
There are 4 antenna interfaces in VT-MOD-CELL-B48 module respectively used for
4 antennas. U.FL-R-SMT-1 RF connector made by HRS Company is used for 4
antenna interfaces in the module. The size of RF connector is shown in Figure -1.
Figure -1 RF connector size (1)
Figure - RF connector size ( )
3 1 2 Antenna Installation

VT-MOD-CELL-B48 Hardware User Manual
8
(1) The antenna must be installed such that 0cm is maintained between the
antenna and users.
( ) The transmitter module may not be co-located with any transmitter or
antenna.
(3) Only antennas of the same type and with qual or less gains as shown below
may be used with this module.
Other types of antenna and/or higher gains antennas may require additional
authorization for operation.
Antenna
type
ANT0
Gain(dBi)
ANT1
Gain(dBi)
ANT
Gain(dBi)
ANT3
Gain(dBi)
PIFA 1 -0.3 0 1.4
3 1 3 Typical RF Performance Characteristics
The typical RF performance characteristics are shown in Table - .
Table - Typical RF performance characteristics
Item Operating Band
Transmit
Power (dBm)
Antenna Interface
receiving sensitivity Frequency
LTE-TDD Band48 1dBm+1/-
dBm
< –98dBm @ 0MHz
bandwidth
3550MHz-
3700MHz

VT-MOD-CELL-B48 Hardware User Manual
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4 Interface Electrical Characteristics
4 1 Overview
This chapter introduces electrical characteristics of VT-MOD-CELL-B48 LTE module
interfaces, including:

Absolute Maximum Ratings

Operating and storage temperatures

module IO port level requirements

Power supply features

Reliability

ESD
This chapter mainly describes external interfaces electrical characteristics of VT-
MOD-CELL-B48 LTE module.
4 2 Absolute Maximum Ratings
VT-MOD-CELL-B48maximum ratings of LTE module is shown in Table 3-1.
Table 3-1 VT-MOD-CELL-B48 LTE module absolute maximum rating
Parameter Description Minimum Value Maximum Value Unit
VCC_3V3 Module Input Voltage
-0.3 4. V
VIN IO Port Input Voltage -0.3 3.6 V
Stresses above those listed under Absolute Maximum Ratings may cause
permanent damage to the device. This is a stress rating only; functional operation of
the device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.

VT-MOD-CELL-B48 Hardware User Manual
10
4 3 Temperature
Table 3- Operating and storage temperature
Parameter Description Minimum Maximum Unit
To Operating temperature - 0 65
℃
Ta
Operating temperature (Reduced
RF performance)
-30 70
℃
Ts Module storage temperature -40 85
℃
Relative storage humidity 5% 95%
4 4 Digital Signal DC Characteristics
It is recommended that the application conditions for VT-MOD-CELL-B48 are as
follows. Wherein, VDD_IO = 1.8V.
Table 3-3 VT-MOD-CELL-B48 Recommended application conditions
Parameter Description Minimum Value Maximum Value Unit
VIH High-level input voltage 1. 6 .1 V
VIL Low-level input voltage -0.3 0.54 V
VOH High-level output voltage VDD_IO V
VOL Low-level output voltage V
4 5 Power Supply and Consumption
4.5.1 Input Power Supply
For VT-MOD-CELL-B48, the input voltage range is 3.15~4. V, which is supplied
from the Module connector.
Table 3-4 Power specifications
Parameter Description Minimum value Maximum value Unit
VCC_3V3 3.15 3.3 4. V

VT-MOD-CELL-B48 Hardware User Manual
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4.5. Power Consumption
The power consumption of VT-MOD-CELL-B48 is shown as Table 3-5.
Table 3-5 DC power consumption (Note 4)
Parameter description Min Type Max Unit
Band48 550 mA
Note 4: Unless specified otherwise, the data in the table are obtained in the following
test conditions: VCC_3V3 = 3.3VDC, T = 5℃.
4.5.3 Boot Procedure
VT-MOD-CELL-B48 LTE module is booted by loading power VCC_3V3.

VT-MOD-CELL-B48 Hardware User Manual
1
5 Interface Electrical Characteristics
5 1 Overview
This chapter mainly describes each interface application of VT-MOD-CELL-B48 LTE
module, including:
5.1.1 USIM card interface
5.1. Power interface
5.1.3 USB bus
5.1.4 LED status indication
5.1.5 RESET interface
5 2 USIM Card Interface
USIM is a smart card for UMTS/LTE cellular applications. The USIM provides the
required subscription information to allow the mobile equipment to attach to a UMTS
or LTE network. The USIM also provides the subscriber’s verification procedures as
well as authentication methods for network authentication during the attach
procedures.
A class B (3.0 V)/class C (1.8 V) USIM card can be connected to VT-MOD-CELL-
B48 module. The USIM card interface signals are shown in Table 4-1.
Table 4-1 USIM pins
PIN Name Description Direction to Module
8 VSIM Power source for the external
USIM
Output
10 UIM_DATA External USIM data signal Input/output
1 UIM_CLK External USIM clock signal Output
14 UIM_RESET External USIM reset signal Output
Note: It is recommended that the USIM card is inserted only after the power of the
module is disconnected, otherwise the USIM card can be destroyed.

VT-MOD-CELL-B48 Hardware User Manual
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5 2 1 USIM Interface Schematic Reference
There is no SIM card interface circuit in VT-MOD-CELL-B48, and users need to add
the USIM interface circuit. Figure 4-1 shows the definition of interface signals and the
typical USIM interface schematic.
Figure 4-1 USIM interface circuit schematic on user side
Figure 4- Pin definition of SIM Socket