MLis MLB-G1101 User Manual
MLB-G1101 DTU
User Guide
MLiS Basic DTU 2G/3G
MLB-G1101 DTU User Guide 1 Rev 1.1
Model Number:
MLB-G1101
Information provided by Schmidt & Co., (HK) Ltd, (herein known as ‘the company’), is believed to be
accurate and reliable. However, the company assumes no responsibility for its use, nor any
infringement of patents or other rights of third parties, which may result from its use. No license is
granted by implication or otherwise under any patent rights of the company other than for circuitry
embodied in the company’s products. The company reserves the right to change the circuitry and
specifications at any time without notice. This document is subject to change without notice.
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mechanical, including but not limited to photocopying, recording, transmitting via fax and/or modem
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expressed written consent of the company.
WARNING: The MLiS GSM DTU is a RF product intended for interfacing and operating with a host
device. Local relevant RF regulations such as allowed frequencies and usage in commercial flights
must be observed. Safety instructions must be included in the manuals of the host device. Schmidt &
Co., (HK) Ltd assumes NO liability for customers, who fail to comply with these precautions.
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MLB-G1101 DTU User Guide 2 Rev 1.1
Version
Date
Description
1.0
Mar 2014
1st Release
1.1
April 2014
2nd Release
Revision History
MLB-G1101 DTU User Guide 3 Rev 1.1
CONTENTS
1 INTRODUCTION ............................................................................................................................ 7
1.1 Description ............................................................................................................................. 7
1.2 Highlights ............................................................................................................................... 7
1.3 Functional Block diagram ....................................................................................................... 9
1.4 Main Features and Services ................................................................................................. 10
1.4.1 Operating Modes .............................................................................................................. 10
1.4.2 DTU Features and Electrical Specifications ...................................................................... 11
1.5 Precautions .......................................................................................................................... 12
2 MECHANICAL DESCRIPTION ..................................................................................................... 13
2.1 Overview .............................................................................................................................. 13
2.2 Dimensions .......................................................................................................................... 13
3 ELECTRICAL INTERFACE DESCRIPTIONS ............................................................................... 14
3.1 Right side view (DB9 connector) .......................................................................................... 14
3.2 Left side view (DC Jack & Industry connector)...................................................................... 15
3.3 Frond view (Antenna & LED ) ............................................................................................... 15
3.4 SIM card holder .................................................................................................................... 16
4 OPERATING NOTE ...................................................................................................................... 17
4.1 Power on the Modem ........................................................................................................... 17
4.2 Reset to default .................................................................................................................... 17
4.3 External input x2 ................................................................................................................... 17
4.4 External Relay x1 ................................................................................................................. 17
4.5 DB9 Connector ..................................................................................................................... 17
4.6 Install SIM card..................................................................................................................... 17
MLB-G1101 DTU User Guide 4 Rev 1.1
5 SCHMIDT Protocol ....................................................................................................................... 18
6 SALES CONTACT ........................................................................................................................ 51
7 ORDERING INFORMATION......................................................................................................... 52
MLB-G1101 DTU User Guide 5 Rev 1.1
List of Figures
Figure 1: Functional Block Diagram for MLB-G1101 .............................................................................. 9
Figure 2: Chassis Dimension for MLB-G1101 ...................................................................................... 13
Figure 3:RS232/RS422/RS485 for MLB-G1101 ................................................................................... 14
Figure 4: DC and Industry connector for MLB-G1101 ................................................................ .......... 15
Figure 5: Antenna Connector for MLB-G1101 ...................................................................................... 15
Figure 6: SIM Card Holder for MLB-G1101 .......................................................................................... 16
Figure 7: Binary Protocol Exchange ..................................................................................................... 18
List of Tables
Table 1: Operating Modes ................................................................................................................... 10
Table 2: Features and Specifications ................................................................................................... 11
Table 3: Chassis Dimensions and Mechanical Description for MLB-G1101 ......................................... 13
Table 4: DB9 pins define for MLB-G1101............................................................................................. 14
Table 5: Interfaces and Indicators Description of MLB-G1101 ............................................................. 15
Table 6: LED functions of MLB-G1101 ................................................................................................. 16
Table 7: General message structure .................................................................................................... 19
Table 8: link control characters set....................................................................................................... 20
MLB-G1101 DTU User Guide 6 Rev 1.1
1 INTRODUCTION
1.1 Description
The MLiS MLB-G1101 is a Dual Band 2G/3G DTU designed for RS232/RS422/RS485 communication
over TCP/IP via any readily available 2G/3G carrier network. Overall, it is more cost and time effective
to use remote solutions to combine Machine to Machine over diverse locations without having first to
establish and invest in a huge complex network.
The MLB-G1101 DTU uses the DB9 Connector to provide data communication interface and the DC
jack to provide power input. LEDs are used to indicate the status of the DTU.
The MLB-G1101 DTU can be used to provide a wireless communication link to many applications,
including metering, fleet and asset management, vending, security and alarm monitoring, emaintenance and other telemetry applications.
1.2 Highlights
Interface
DC jack Connector for power
DB9 connector for data communications
SMA Female Connector (GSM antenna connector)
SIM card reader
1 * relay
2 * I/O pins
General Features
Dual / Quad-Band GSM 850/900/1800/1900 MHz
GPRS multi-slot class 8
GSM release 99
Output Power
- Class 4 (+33dBm ±2dB) for EGSM850 (quad band only)
- Class 4 (+33dBm ±2dB) for EGSM900
- Class 1 (+30dBm ±2dB) for GSM1800
- Class 1 (+30dBm ±2dB) for GSM1900 (quad band only)
Control via AT commands
SIM Application Toolkit (release 99)
MLB-G1101 DTU User Guide 7 Rev 1.1
TCP/IP stack access via AT commands
Internet Services: TCP, UDP, HTTP, FTP
Supply voltage range: 5 to 32 VDC
Temperature range
- Operating: -40°C to 85°C
- Restricted operating: 65°C to 80°C
Dimensions (L) x (W) x (H) : 119.5 x 89 x 26.9 mm (excluding connectors)
Weight: 200g
GPRS Data Transmission
• GPRS Class 12: max. 86kbps (DL & UL)
• Mobile station class B
• PBCCH support
• Coding schemes CS 1-4
CSD Data Transmission
• Up to 14.4kbit/s
• V.110, RLP
• Non transparent
• USSD support
PPP-stack for GPRS data transfer
Short Message Service (SMS)
• Point-to-point MO and MT
• SMS cell broadcast
• Text and PDU mode
• Cell broadcast
• Storage: SIM card plus 25 SMS locations in mobile equipment Transmission of SMS alternatively
over CSD or GPRS. Preferred mode can be user defined.
MLB-G1101 DTU User Guide 8 Rev 1.1
DB9
1.3 Functional Block diagram
Figure 1: Functional Block Diagram for MLB-G1101
The MLB-G1101 consists of a fully certified (CE approved) GSM/GPRS engine, SIM card holder and
power regulator.
The DTU is supplied with power via the DC jack. The remaining DB9 connector are used for data
communications.
The SMA female connector provides the air interface to an external 50 ohm antenna specified for the
correct frequency band.
MLB-G1101 DTU User Guide 9 Rev 1.1
1.4 Main Features and Services
Normal
operation
GSM / GPRS
SLEEP
Various power save modes set with AT+CFUN command. Software is
active to minimum extent. If the module was registered to the GSM
network in IDLE mode, it is registered and paging with the BTS in SLEEP
mode, too. Power saving can be chosen at different levels: The NONCYCLIC SLEEP mode (AT+CFUN=0) disables the AT interface. The
CYCLIC SLEEP modes AT+CFUN=7 and 9 alternately activate and
deactivate the AT interfaces to allow permanent access to all AT
commands.
GSM IDLE
Software is active. Once registered to the GSM network, paging with
BTS is carried out. The module is ready to send and receive.
GPRS IDLE
Module is ready for GPRS data transfer, but no data is currently sent or
received. Power consumption depends on network settings and GPRS
configuration (e.g. multi-slot settings).
GPRS DATA
GPRS data transfer in progress. Power consumption depends on
network settings (e.g. power control level), uplink / downlink data rates,
GPRS configuration (e.g. used multi-slot settings) and reduction of
maximum output power.
POWER
DOWN
Normal shutdown after sending the AT^SMSO command. Only a voltage regulator is
active for powering the RTC. Software is not active. Interfaces are not accessible.
Operating voltage (connected to BATT+) remains applied.
Airplane
mode
Airplane mode shuts down the radio part of the module, causes the module to log off from
the GSM/GPRS network and disables all AT commands whose execution requires a radio
connection. Airplane mode can be controlled by using the AT commands AT^SCFG and
AT+CALA:
• With AT^SCFG=MEopMode/Airplane/OnStart the module can be configured to enter the
Airplane mode each time when switched on or reset.
• The parameter AT^SCFG=MEopMode/Airplane can be used to switch back and forth
between Normal mode and Airplane mode any time during operation.
• Setting an alarm time with AT+CALA followed by AT^SMSO wakes the module up into
Airplane mode at the scheduled time.
The MLB-G1101 performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI
and ITU-T. The services and functions of the MLB-G1101 are implemented by issuing customized
applications embedded on the device, or by AT commands issued internally, or over the RJ45 to
RS232 serial interface.
1.4.1 Operating Modes
The table below briefly summarizes the various operating modes referred to in the following chapters.
Table 1: Operating Modes
MLB-G1101 DTU User Guide 10 Rev 1.1
1.4.2 DTU Features and Electrical Specifications
S/N
Feature
Specifications
1
Frequency Bands
EU GSM/GPRS/EDGE: 900/1800MHz and UMTS/HSPA+:
900/2100MHz
US GSM/GPRS/EDGE: 850/1900MHz and UMTS/HSPA+:
850/1900MHz
2
RF Output Power
Class 4 (+33dBm ±2dB) for EGSM850 (quad band only)
Class 4 (+33dBm ±2dB) for EGSM900
Class 1 (+30dBm ±2dB) for GSM1800
Class 1 (+30dBm ±2dB) for GSM1900 (quad band only)
3 GSM Phase
Release 99
4
Power Supply
5 o 32 VDC
5
Power Consumption
- DATA mode : GPRS 1TX, 4RX
GSM 850/EGSM 900
GSM 1800/1900
180mA
145mA
- DATA mode : GPRS 2TX, 3RX
GSM 850/EGSM 900
GSM 1800/1900
330mA
260mA
6
Operating Temperature
Normal operation: -40°C to +85°C
Restricted operation: -40°C to -30°C, +85°C to +90°C
7
Data Transfer
GPRS
Multi-slot Class 12 max 85.6kbps (Downlink and Uplink)
Full PBCCH Support
Mobile Station Class B
Coding Scheme 1~4
PPP stack
CSD
V.110, RLP, non-transparent @2.4, 4.8, 9.6 & 14.4kbps
USSD
PPP-stack for GPRS data transfer
8
SMS
Point-to-Point MT and MO
Cell Broadcast
Text and PDU Mode
Storage: SIM Card plus 25 SMS locations in mobile equipment
Transmission of SMS alternatively over CSD or GPRS. Preferred
mode can be user defined.
9
AT Commands
AT-Hayes 3GPP TS 27.007, TS 27.005
10
TCP/IP Stack
Access by AT Commands
Internet Services include TCP, UDP, HTTP, FTP
11
Serial Interface
DB9 connector
8-wire Modem Interface with status and control lines, unbalanced,
asynchronous
Fixed bit rate: 300bps to 460,800bps
Autobauding: 1,200bps to 460,800bps
Table 2: Features and Specifications
MLB-G1101 DTU User Guide 11 Rev 1.1
S/N
Feature
Specifications
Flow Control: Hardware RTS0/CTS0 and Software XON/OFF
Multiplex ability according to GSM 07.10 Multiplexer Protocol
12
SIM Interface
SIM Card Slot
Supports SIM Cards: +3V and +1.8V
13
Antenna
50 ohms via External SMA Connector
14
Software Reset
Orderly shut down and Reset by AT Command (AT^SMSO)
15
RoHs
All hardware components are fully compliant with the EU RoHs
directive 2002/95/EC
Exception: MLB55IN
1.5 Precautions
The MLB-G1101 DTU is designed for indoor use only. For outdoor use it has to be integrated into a
weatherproof enclosure. Do not exceed the environmental and electrical limits as specified in the user
manual.
MLB-G1101 DTU User Guide 12 Rev 1.1
S/N
Parameter
Value
1
Height (H)
26.9mm
2
Length (L)
119.5mm
3
Width (W)
89.0mm
4
Weight
200g
5
Chassis Material
Metal
2 MECHANICAL DESCRIPTION
2.1 Overview
The pictures below show the mechanical design of the DTU along with the positions of the different
connectors.
2.2 Dimensions
Figure 2: Chassis Dimension for MLB-G1101
Table 3: Chassis Dimensions and Mechanical Description for MLB-G1101
MLB-G1101 DTU User Guide 13 Rev 1.1
3 ELECTRICAL INTERFACE DESCRIPTIONS
3.1 Right side view (DB9 connector)
Figure 3:RS232/RS422/RS485 for MLB-G1101
The table below defines the RS232/RS422/RS485 pin configuration on the DTU
MLB-G1101 DTU User Guide 14 Rev 1.1
Table 4: DB9 pins define for MLB-G1101
Item
Description
Function
1
DC
Input Power:+5V~+32V
2
PWR(V+,V-)
Output Power +3.3V
3
Relay
External Relay:max+48V
4
DI1(I1,COM_1)
I1:external signal +12V~+48V
COM_1:common grand
5
DI2(I2,COM_2)
I2:external signal,+12V~+48V
COM_2:comman grand
3.2 Left side view (DC Jack & Industry connector)
Figure 4: DC and Industry connector for MLB-G1101
The interfaces and indicators for MLB-G1101 are as follows:
Table 5: Interfaces and Indicators Description of MLB-G1101
3.3 Frond view (Antenna & LED )
Figure 5: Antenna Connector for MLB-G1101
For optimum RF performance, the MLiS DTU has to be connected to an external RF antenna matched
to 50ohms. Please use a SMA Male connection for the DTU.
MLB-G1101 DTU User Guide 15 Rev 1.1
The table describes LED function.
Item
Description
Function
1
Power
Power on indication
2
3G
3G status indication
3
Ready
Function working indication
4
Fault
Occur error
5
Net
Bulid connection
6
SIMerr
Sim card error indication
7
Tx
Uart transmit indication
8
Rx
Uart Receive indication
Table 6: LED functions of MLB-G1101
3.4 SIM card holder
In the bottom, The MLB-G1101 DTU is provided with a SIM card reader designed for 1.8V and 3V SIM
cards. It is the flip-up type which can be locked. It can be accessed through removing the battery cover
as shown below.
Figure 6: SIM Card Holder for MLB-G1101
＊ Be sure to power off the modem when you replace the SIM card. Otherwise it may cause
damage to the equipment.
The MLB-G1101 fully operates when inserting a SIM card. Some MLB-G1101 functionality may be lost
if you try to operate the DTU without a SIM card
MLB-G1101 DTU User Guide 16 Rev 1.1
4 OPERATING NOTE
4.1 Power on the Modem
After plug in power adapter. The modem is usually fully operational within 4 seconds, after
powering it up. Depending on the signal strength of the network in the area, logging into a
network may take longer and is outside the control of the modem.
4.2 Reset to default
Press reset button, it will be reset to default. All of temporary data buffer will be clear.
4.3 External input x2
External signal input source, positive signal are DI1 and DI2, negative signal are COM_1 are COM_2.
Power input range is +12V~+48V, it will be determined as positive. It can be used for alert.
4.4 External Relay x1
Non positive and negative signal relay output, maximum power input voltage range is +48V. It can be
used for beeper.
4.5 DB9 Connector
The RS-232/422/485 connector is DB9 male type, please refer to table 4
4.6 Install SIM card
Please turn to back view, screw open the cover, then you will see SIM card holder. Please use SIM
card faces to PCB board and put it into holder, please screw the cover back. (Please refer to Figure 6)
MLB-G1101 DTU User Guide 17 Rev 1.1
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