UAB Teltonika TM2500TLT GSM/GPRS/GNSS/BLUETOOTH module User Manual

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Vilnius,
TM2500
GSM/GPRS/GNSS/BLUETOOTH module
USER MANUAL
Version 0.2
1/23
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FOR OEM OR INTEGRATORS ONLY: This module is limited to OEM installation
only and must not be sold to end-users.
Copyright
TELTONIKA is a registered trademark of UAB TELTONIKA.
Copyright © 2016 UAB TELTONIKA. All rights reserved.
No part of this publication may be reproduced or distributed in any form or by any means, or
stored in a database or retrieval system, without the prior written permission of the publisher.
UAB TELTONIKA reserves the right to make changes in technical and product specifications
without provisional notification.
OEM integrators must be instructed to ensure that the end-user has no manual instructions
to remove or install the device.
The end-user can not remove or install this module to any other devices.
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INTRODUCTION ................................................................................................................................... 4
1.1
Contact information, Support ............................................................................................... 4
1.2
Related Documents ............................................................................................................... 4
1.3
OVERVIEW ............................................................................................................................. 4
1.4
SCOPE OF THE PRODUCT ....................................................................................................... 5
1.5
CERTIFICATION ...................................................................................................................... 5
MODEM features ................................................................................................................................ 5
GSM/GPRS RF Features ....................................................................................................................... 6
Bluetooth features .............................................................................................................................. 7
FM Features ........................................................................................................................................ 8
GPS features ........................................................................................................................................ 8
Application Functions ......................................................................................................................... 9
1.6
Application Modes Introduction ........................................................................................... 9
POWER SUPPLY ................................................................................................................................... 9
1.7
Power Supply Requirements ................................................................................................. 9
1.8
Power Features of GSM Part ................................................................................................. 9
1.9
SLEEP Mode ......................................................................................................................... 10
1.10
Operating Modes of GNSS Part ....................................................................................... 11
1.11
Power consumption ........................................................................................................ 11
1.12
Power Saving ................................................................................................................... 12
1.13
Minimum functionality mode ......................................................................................... 12
1.14
RF Outout Power ............................................................................................................. 13
1.15
RF Receiving Sensitivity ................................................................................................... 14
1.16
Operating Frequencies .................................................................................................... 14
DIGITAL LEVEL SPECIFICATIONS ........................................................................................................ 14
1.17
DC characteristics ............................................................................................................ 14
Communicate with Module .............................................................................................................. 15
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Standards and Regulatory Compliance .......................................................................................... 19
Standards and certification ............................................................................................................... 19
FCC certification requirements. ........................................................................................................ 20
FCC RF exposure requirements ......................................................................................................... 22
Change Log ........................................................................................................................................ 23
INTRODUCTION
1.1
Contact information, Support
The TM25 Hardware User Manual contains all information necessary for a successful
integration of the GSM/GPRS module TM25 into the customer applications.
This document is intended for Teltonika customers to support application and engineering
efforts that use the products designed by Teltonika. The document contains a description
interfaces present on the module.
Contact information, Support
For general contact, technical support, to report documentation errors and manuals,
contact Teltonika Technical Support Center at: support@teltonika.lt
1.2
Related Documents
At_commands_Manual
1.3
OVERVIEW
This document describes Teltonika GSM/GPRS/GPS/BLUETOOTH module: mechanical and
electrical parameters, pin‐outs descriptions, hardware commands, power supply
parameters, I/O and port descriptions, mounting and packing information as well as the
design rules of the module integration within user application.
The document contains some hardware solutions for developing a product with the
Teltonika TM25 module, suggested hardware solutions can be taken as a base for
developing the product with Teltonika TM25 module.
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1.4
SCOPE OF THE PRODUCT
TM25 is a Quad‐band GSM/GPS/BLUETOOTH module, with tiny profile of 17mm x 17mm x 2.5mm.
Module works at 850MHz, 900MHz, 1800MHz, 1900MHz frequencies. TM25 contains GPRS multi‐
slot class 12 and supports the GPRS coding schemes CS‐1, CS‐2, CS‐3, CS‐4.
1.5
CERTIFICATION
TM25 GSM/GPRS/GPS/BLUETOOTH module is certified by CE approval report Radio &
Telecommunications Terminal Equipment Directive (R&TTED) report.
Hereby, Teltonika declares that this GSM/GPRS/GPS/BLUETOOTH Data Module is in
compliance with the essential requirements and other relevant provisions of Directive
1999/5/EC. The directives that are followed for this data module are described below:
MODEM features
Radio interface and baseband front‐end

Digital PM data path with baseband front‐end

High dynamic range delta‐sigma ADC converts the downlink analog I and Q signal to
digital baseband.

10‐bit D/A converter for Automatic Power Control (APC).

Programmable radio Rx filters with adaptive gain control.

Dedicated Rx filter for FB acquisition.

6‐pin Baseband Parallel Interface (BPI) with programmable driving strength

Supports multi‐band
Voice and modem CODEC

Dial tone generation

Voice memo

Noise reduction

Echo suppression

Advanced sidetone oscillation reduction

Digital sidetone generator with programmable gain

Two programmable acoustic compensation filters
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
Supports GSM/GPRS modem

GSM quad vocoders for adaptive multirate (AMR), enhanced full rate (EFR), full rate
(FR) and half rate (HF)

GSM channel coding, equaluzation and A5/1, A5/2 and A5/3 ciphering

GPRS GEA1,GEA2 and GEA ciphering

GPRS packet switched data with CS1/CS2/CS3/CS4 coding schemes

GPRS Class 12

Supports SAIC (single antenna interface cancelltaion) technology

Supports VAMOS (Voice servies over Adaptive multi‐user channels on One Slot).
Voice interface and voice front‐end

Microphone input has one low‐noise amplifier with programmable gain Automatic
Gain Control (AGC) mechanisms

Voice power amplifier with programmable gain

2nd order Sigma‐Delta A/D converter for voice uplink path

Shares D/A converter with audio playback path

Supports full‐duplex hands‐free operation

Compliant with GSM 03.50
GSM/GPRS RF Features
Receiver

Dual single‐ended LNAs support Quad band Quadrature RF mixer

Fully integrated channel filter

High dynamic range ADC

‐12dB PGA gain with 6dB gain step
Transmitter

Transmitter outputs support quad bands.

Highly precise and low noise RF transmitter for GSM/GPRS applications
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Frequency synthesizer

Programmable fractional‐N synthesizer

Integrated wide range RFVCO

Integrated loop filter

Fast settling time suitable for multi‐slot GPRS applications.
Digitally‐Controlled Crystal Oscillator (DCXO)

Two‐pin 25MHz crystal oscillator

On‐chip programmable capacitor array for coarse‐tuning

On‐chip programmable capacitor array for fine‐tuning

Low power mode supports 32K crystal removal
Bluetooth features
Radio feature

Fully compliant with Bluetooth specification 3.0

Low out‐of‐band spurious emissions support simultaneous operation with GPS and
GM\SM/GPRS worldwide radio systems

Low‐IF architecture with high degree of linearity and high order channel filter

Fully integrated PA provides 7.5 dBm output power

‐95 dBm sensitivity with excellent interference rejection performance

Hardware AGC dynamically adjusts receiver performance in changing environments
Baseband features

Up to 4 simultaneous active ACL links

Up to 1simultaneous SCO or eSCO link with CVSD coding

Supports eSCO

Scatternet support: Up to piconets simultaneously with background inquiry/page
scan

Supports sniff mode

AFH and PTA collaborative support for WLAN/BT coexistence

Idle mode and sleep mode enables ultra‐low power consumption
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
Supports PCM interface and built‐in programmable transcoders for linear voice with
re‐transmission

Built‐in hardware modem engine for access code correction, header error correction,
forward error correction, CRC, whitening and encryption

Channel quality driven data rate adaptation

Channel assessment for AFH
Platform features

Embedded processor for Bluetooth protocol stack with build‐in memory system

Fully verified ROM based system with code patch for feature enhancement
FM Features

65‐108 MHz worldwide FM bands with 50KHz tuning step

Supports RDS/RBDS radio data system

Digital stereo demodulator

Adaptive FM demodulator for both high‐ and low‐quality scenarios

Low sensitivity level with superior interference rejection

Programmable de‐emphasis (bypass/50 S/75 S)

Stereophonic multiplex signal (MPX) signal detection and demodulation

Superior stereo noise reduction and soft mute volume control

Mono/stereo blending

Audio sensitivity 3dBu Vemf (SINAD=26dB)

Audio SINAD >=60dB

Supports Anti‐jamming algorithm

Supports short antenna
GPS features

GPS/GLONASS/GALILEO/BEIDOU receiver

Supports multi‐GNSS, QZSS, SBAS ranging

Supports WAAS,EGNOS,MSAS,GAGAN

12 multi‐tone active interference cancellers
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
RTCM ready

Indoor and outdoor multi‐path detection and compensation

Supports FCC E911 compliance and A‐GPS

Max. fixed update rate up to 10 Hz
Application Functions
TM2500 is and SMD type module with 129 LGA pads. From 129 pads, 28 is GROUND pads, 14
General purpose (GPIO) pads and other purpose pins.
1.6
Application Modes Introduction
TM2500 module is integrated with GSM, GNSS and BLUETOOTH engines which can work as a whole
unit (all‐in‐one solution) or work independently (stand‐alone solution) according to customer
demands.
POWER SUPPLY
1.7
Power Supply Requirements
The external power must be connected to modem power pads.
Table 1 TM2500 Power supply range
POWER SUPPLY
1.8
Nominal Supply Voltage
+4.0 V
Normal Operating Voltage range
+3.4 – 4.2 v
Power Features of GSM Part
The power supply of the GSM part is one of the main issues in TM2500 module, because GSM
modem could provide short current bursts consumption up to maximum 2A during transmissions.
The operating Voltage Range must never be exceeded. Power supply range of GSM part is from 3.3V
to 4.6V. Special care must be taken when designing the applications power supply section to avoid
having an excessive voltage drop. If the voltage drop is exceeding the limits it could cause a Power
Off of the module.
The VBAT trace should be wide enough to ensure that there is not too much voltage drop during
burst transmission. The width of trace should be no less than 2mm; and in principle, the longer the
VBAT trace, the wider it will be.
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1.8.1
Reference Design for Power Supply
It is suggested to control the module’s main power supply (VBAT) via LDO enable pin to restart the
module when the module becomes abnormal. Power switch circuit like P‐channel MOSFET switch
circuit can also be used to control VBAT.
1.8.2
Power Features of GNSS Part
Power supply range of GNSS part is from 2.8 to maximum 4.3V.
1.8.3
Monitor power supply
The AT command AT+CBC can be used to monitor the supply voltage of the GSM part. The unit of
the displayed voltage is mV. For details, please refer to AT commands manual.
1.8.4
Minimum Functionality Mode
Minimum functionality mode reduces the functionality of the GSM part to a minimum level. The
consumption of the current can be minimized when the slow clocking mode is activated at the same
time.
The mode is set via the AT+CFUN command which provides the choice of the functionality levels
=0, 1, 4

0: minimum functionality

1: full functionality (default)

4: disable from both transmitting and receiving RF signals
If the GSM part is set to minimum functionality by AT+CFUN=0, the RF function and SIM card
function
would be disabled. In this case, the UART port is still accessible, but all AT commands related with RF
function or SIM card function will be unavailable.
If the GSM part is set by the command AT+CFUN=4, the RF function will be disabled, but the UART
port
is still active. In this case, all AT commands related with RF function will be unavailable.
After the GSM part is set by AT+CFUN=0 or AT+CFUN=4, it can return to full functionality mode by
AT+CFUN=1.
For more detailed information about AT+CFUN, please refer to AT commands manual document.
1.9
SLEEP Mode
SLEEP mode is disabled by default. It can be enabled by AT+ESLP=1 and the premise is that the
GNSS is powered off. The default setting is AT+ESLP=0, and in this mode, the GSM part cannot enter
SLEEP mode.
When the GSM part is set by the command AT+ESLP=1, you can control the part to enter into or exit
from the SLEEP mode through pin DTR. When DTR is set to high level, and there is no on‐air or
hardware interrupt such as GPIO interrupt or data on UART port, the GSM part will enter into SLEEP
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mode automatically. In this mode, the GSM part can still receive voice, SMS or GPRS paging from
network, but the UART port does not work.
1.10 Operating Modes of GNSS Part
Full on mode includes tracking mode and acquisition mode. Acquisition mode is defined as that the
GNSS part starts to search satellites, and to determine the visible satellites, coarse carrier frequency
& code phase of satellite signals. When the acquisition is completed, it switches to tracking mode
automatically. Tracking mode is defined as that the GNSS part tracks satellites and demodulates the
navigation data from specific satellites. When the GNSS_VCC is valid, the GNSS part will enter into
full on mode automatically.
1.11 Power consumption
TM2500 module power consumptions:
Table 2 Power consumption table
Average Current
Consumption
Note
Power OFF Mode
1.01 mA
Module spplied but Switched off
2G (GSM) Talk Mode @ 850/900 MHz,
PCL=5 (P=33dBm)
251.7 mA
2G (GSM) Talk Mode @ 1800/1900
MHz, PCL=0 (P=30dBm)
181.5 mA
2.5G (GPRS 2+1) TBF mode @850/900
MHz, PCL = 5 (P=33dBm)
252.7 mA
2.5G (GPRS 2+2) TBF mode @850/900
MHz, PCL = 5 (P=33dBm)
365.5 mA
2.5G (GPRS 2+1) TBF mode
@1800/1900 MHz, PCL = 0 (P=30dBm)
175.5 mA
2.5G (GPRS 2+2) TBF mode
@1800/1900 MHz, PCL = 0 (P=30dBm)
256.2 mA
Mode
The listed current consumption values are referred to the average current consumption of the whole
module, when the module supply voltage is 4V and signal power is ‐75dBm.
The RF transmission is not continuous in the GSM system, the transmission is packed into bursts at a
base frequency of about 216 Hz, and the relative current peaks can be as high as about 2.5 A.
Therefore the power supply has to be designed in order to withstand with these current peaks
without big voltage drops.
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1.11.1
Power down
The following procedures can be used to turn off the module:
1.12

Normal power down procedure: Turn off module using the PWRKEY pin.

Over‐voltage or under‐voltage automatic shutdown: Take effect when over‐voltage or
under‐voltage is detected.
Power Saving
Based on system requirements, there are several actions to drive the module to enter low current
consumption status. For example, „AT+CFUN“ can be used to set module into minimum functionality
mode and DTR hardware interface signal can be used to lead sustem to SLEEP mode.
1.13 Minimum functionality mode
Minimum functionality mode reduces the functionality of the module to a minimum level. The
consumption of the current can be minimized when the slow clocking mode is activated at the same
time. The mode is set with the “AT+CFUN” command which provides the choice of the functionality
levels =0, 1, 4.
1.13.1

0: minimal functionality, turn off radio and SIM power.

1: can enter normal mode, full functionality.

4: can enter flight mode.
SLEEP mode
SLEEP mode is disabled by default. It can be enabled by AT+ESLP=1. The default setting is AT+ESLP=0,
ant in this mode GSM par cannot enter SLEEP mode.
When the GSM part is set by the command AT+QSCLK=1, you can control the part to enter into or
exit from the SLEEP mode through pin DTR. When DTR is set to high level, and there is no on‐air or
hardware interrupt such as GPIO interrupt or data on UART port, the GSM part will enter into SLEEP
mode automatically. In this mode, the GSM part can still receive voice, SMS or GPRS paging from
network, but the UART port does not work.
1.14 Bluetooth antenna description
TM2500 module provides a Bluetooth antenna pad named BT_ANT, pin definition listed below.
Table 3 BT_ANT pin definition
Pin name
Pin number
Description
BT_ANT
A7
BT antenna pad
GND
A6,A8,B7
Ground
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It is necessary to add additional Band Pass filter in to the circuit, we recommend Murata Electronics
filter, part. No: LFB182G45SG9A293. For additional information please see TM2500_Block diagram
p.g 10;
For SMT Bluetooth antenna we recommend to use ceramic antenna ANT3216A063R2400A.
Table 4 Antenna description
Description
Value
Center Frequency
2.45 GHz
Bandwidth
230 MHz(Typ.)
Return Loos
10 dB min
Polarization
Linear
Azimuth Beam width
Omni‐directional
Peak Gain
≤1.69 dBi(Typ.)
Impedance
50Ω
Operating Temperature
‐ 40~105°C
Maximum Power
1W
Ni/Sn (Environmentally‐Friendly
Leadless)
Termination
Resistance to Soldering Heats
260°C, 10sec.
On our developed EVB for TM2500, we used coplanar waveguide transmission line. RF transmission
line width is 0.5mm, thickness between transmission line and ground is 0.125mm. For examples how
to calculate RF line impedance see reference in TM2500 technical operation descriptions, p.g 27‐29;
1.15 RF Output Power
Table 5 RF Output power
Frequency
Max.
Min.
GSM850
33dBm
5dBm±
EGSM900
33dBm
5dBm±
DCS1800
30dBm
0dBm±
PCS1900
30dBm
0dBm±
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1.16 RF Receiving Sensitivity
Table 6 Receiving Sensitivity
Frequency
Receive Sensitivity
GSM850
<‐ 110dBm
EGSM900
<‐ 110dBm
DCS1800
<‐ 110dBm
PCS1900
<‐ 110dBm
1.17 Operating Frequencies
Table 7 Operating Frequencies
Frequencies
Receive
Transmit
ARFCH
GSM850
869~894MHz
824~849MHz
128~251
EGSM900
925~960MHz
880~915MHz
0~124, 975~1023
DCS1800
1805~1880MHz
1710~1785MHz
512~885
PCS1900
1930~1990MHz
1850~1910MHz
512~810
DIGITAL LEVEL SPECIFICATIONS
The following tables show the digital levels specifications used in the TM25 interface circuits:
1.18 DC characteristics
Absolute maximum ratings
Table 8 maximum ratings
Absolute Maximum Rating (Not Functional):
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Input level limit values
Description
Min
Max
Generic digital interfaces GPIO
‐0.30 V
3.6 V
I2C interface
‐0.30 V
3.6 V
UART interface
‐0.30 V
3.6 V
SIM interface
‐0.30 V
3.6 V
PWR_ON
‐0.30 V
3.6 V
EXTRSTn signal
‐0.30 V
3.6 V
Communicate with Module
0. Connect the main port of EVB or the module to PC’s USB port with the USB to UART
converter cable.
2. Open the COM Port Terminal on PC. Set appropriate Baud Rate (such as 115200 bps) and
COM Port number related to module.
3. Attach GSM, GPS and if needed BLUETOOTH ntena to EVB.
4. Insert SIM card into the SIM card socket (main sim card socket is closer to PCB).
5. Power ON EVB.
6. After ntenaf, in COM Port termianl will apper text, with meaning that module boot
started. Wait 2‐3 seconds, and module will be ready at accept AT commands, ntena to AT
commands manual.
The module is set to autobauding mode in default configuration. This operation is to
synchronize the baud rate between the computer and the module.
Table 9 Terms and Abbreviations
Abbreviation
Description
3GPP
3rd Generation Partnership Project
8‐PSK
Eight‐Phase Shift Keying
AC
Alternating Current
ADC
Analog to Digital Converter
AFC
Automatic Frequency Correction
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Abbreviation
Description
ASC
Asynchronous Serial Interface Controller
AT
AT Command Interpreter Software Subsystem, or attention
B2B
Board‐to‐Board
BABT
British Approvals Board for Telecommunications
CBCH
Cell Broadcast Channel
CBS
Cell Broadcast Services
CGU
Clock Generation Unit
CS
Coding Scheme or Chip Select
CSD
Circuit Switched Data
CTS
Clear To Send
DAI
Digital Audio Interface
DC
Direct Current
DCD
Data ntena Detect
DCE
Data Communication Equipment
DCS
Digital Cellular System
DL
Down Link (Reception)
DSP
Digital Signal Processing
DSR
Data Set Ready
DTE
Data Terminal Equipment
DTM
Dual Transfer Mode
DTMF
Dual Tone Multi Frequency
DTR
Data Terminal Ready
EDGE
Enhanced Data rates for GSM Evolution
EEPROM
Electrically Erasable and Programmable ROM
E‐GPRS
Enhanced GPRS
EGSM
Extended GSM
EMC
Electromagnetic Compatibility
ESD
Electrostatic Discharge
FDD
Frequency Division Duplex
FEM
Front End Module
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Abbreviation
Description
FFS
Flash File System
GND
Ground
GPIO
General Purpose Input Output
GPRS
General Packet Radio Service
GSM
Global System for Mobile Communication
HDLC
High Level Data Link Control
HSDPA
High Speed Downlink Packet Access
HW
Hardware
JTAG
ntena Test Action Group
I2C
Inter‐Integrated Circuit
I2S
Inter IC Sound
IIR
Infinite Impulse Response
IMEI
International Mobile Equipment Identity
I/O
Input / Output
IP
Internet Protocol
IPC
Inter Processor Communication
ISO
International Organization for Standardization
ITU
International Telecommunication Union
LDO
Low‐Dropout
LVD
Low ntena Directive
M2M
ntena to Machine
MCP
Multi‐Chip‐Package
MCS
Modulation Coding Scheme
ME
Mobile Equipment
MICTOR
MIDI
Matched ntenaf Connector
Musical Instrument Digital Interface
MS
Mobile Station
MSC
Mobile Switching Centre
MUX
Multiplexer or Multiplexed
NOM
Network Operating Mode
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Abbreviation
Description
NTC
ntenaf Temperature Coefficient
PA
Power Amplifier
PBCCH
Packet Broadcast Control Channel
PC
Personal Computer
PCB
Printed Circuit Board
PCCCH
Packet Common Control Channel
PCS
Personal Communications Service
PDU
Protocol Data Unit
PICS
Protocol Implementation Conformance Statement
PIXIT
Protocol Implementation Extra ntenafkon for Testing
PLMN
Public Land Mobile Network
PMU
Power Management Unit
PPS
Protocol and ntenaf Selection
PSD
Packet Switch Data
PSRAM
Pseudo Static Random Access Memory
RF
Radio Frequency
RI
Ring Indicator
ROM
Read Only Memory
RTC
Real Time Clock
RTS
Ready To Send
RX
Receiver
R&TTED
Radio and Tele Terminal Equipment Directive
SAW
Surface Acoustic Wave
SCCU
Standby Clock Control Unit
SIM
Subscriber Identification Module
SMA
SubMiniature version A connector
SMPTE
Society of Motion Picture and Television Engineers
SMS
Short Message Service
SPI
Serial Peripheral Interface
SSC
Synchronous Serial Interface Controller
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Abbreviation
Description
SW
Software
TCH
Traffic Channel
TCP
Transmission Control Protocol
TS
Technical Specification
TX
Transmitter
UART
Universal Asynchronous Receiver‐Transmitter
UDI
Unrestricted Digital Information
UE
User Equipment
UEA
UMTS Encryption Algorithm
UL
UMTS
Up Link (Transmission)
Universal Mobile Telecommunications System
USB
Universal Serial Bus
USIF
Universal Serial interfaces
VC‐TCXO
ntena Controlled – Temperature Controlled Crystal Oscillator
WCDMA
Wideband CODE Division Multiple Access
FCC RF EXPOSURE REQUIREMENTS
Standards and Regulatory Compliance
Standards and certification
The EUT conforms to the following standards and certification requirements:
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GSM850/1900, Bluetooth
FCC
❒ 47 CFR Part 1 – RF radiation exposure limits
❒ 47 CFR Part 2 – Equipment authorization
❒ 47 CFR Part C – Bluetooth
FCC certification requirements.
According to the definition of mobile and fixed 
 ntena is described in Part 2.1091(b), this

 ntena is a mobile 
 ntena.
And the following conditions must be met:
1. The EUT is a mobile 
 ntena; maintain at least a 20 cm separation between the EUT and
the user’s body and must not transmit simultaneously with any other 
 ntena or
transmitter.
2. The 
 ntena is only for fixed operation mode. (A Class II Change would be required for
near-body Host applications.)
3. A label with the following statements must be attached to the host end product: This

 ntena contains Tx FCC ID:2AJLOTM2500TLT
4. To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, maximum 
 ntena gain (including cable loss) must not exceed:
❒GSM850/1900 band < 2 dBi
❒Bluetooth <1.69 dBi
5. This module must not transmit simultaneously with any other 
 ntena or
transmitter
6. The host end product must include a user manual that clearly defines operating
requirements and conditions that must be observed to ensure compliance with current
FCC RF exposure guidelines.
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For portable devices, in addition to the conditions 3 through 6 described above, a separate
approval is required to satisfy the SAR requirements of FCC Part 2.1093
If the device is used for other equipment that separate approval is required for all other
operating configurations, including portable configurations with respect to 2.1093 and
different antenna configurations.
For this device, OEM integrators must be provided with labeling instructions of finished
products. Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:
A certified modular has the option to use a permanently affixed label, or an electronic
label. For a permanently affixed label, the module must be labelled with an FCC ID Section 2.926 (see 2.2 Certification (labelling requirements) above). The OEM manual
must provide clear instructions explaining to the OEM the labelling requirements, options
and OEM user manual instructions that are required (see next paragraph).
For a host using a certified modular with a standard fixed label, if (1) the module’s FCC
ID is not visible when installed in the host, or (2) if the host is marketed so that end users
do not have straightforward commonly used methods for access to remove the module so
that the FCC ID of the module is visible; then an additional permanent label referring to the
enclosed module:“ Contains Transmitter Module FCC ID:2AJLOTM2500TLT” or “Contains
FCC ID:2AJLOTM2500TLT” must be used. The host OEM user manual must also contain
clear instructions on how end users can find and/or access the module and the FCC ID.
The user manual or instruction manual for an intentional or unintentional radiator shall
caution the user that changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment. In
cases where the manual is provided only in a form other than paper, such as on a
computer disk or over the Internet, the information required by this section may be
included in the manual in that alternative form, provided the user can reasonably be
expected to have the capability to access information in that form.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
Caution: Changes or modifications not expressly approved by the manufacturer could void
the user’s authority to operate the equipment.
21/23
Vilnius,
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help.
FCC RF exposure requirements
1. Radiated transmit power must be equal to or lower than that specified in the FCC Grant of
Equipment Authorization for FCC ID:2AJLOTM2500TLT.
2. To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, maximum antenna gain (including cable loss) must not exceed:
❒GSM850/1900 band <2 dBi
❒Bluetooth <1.69 dBi
3. This module must not transmit simultaneously with any other antenna or transmitter.
4. To ensure compliance with all non-transmitter functions the host manufacturer is
responsible for ensuring compliance with the module(s) installed and fully operational. For
example, if a host was previously authorized as an unintentional radiator under the
Declaration of Conformity procedure without a transmitter certified module and a module is
added, the host manufacturer is responsible for ensuring that the after the module is
installed and operational the host continues to be compliant with the Part 15B unintentional
radiator requirements.
22/23
Vilnius,
Change Log
Nr.
Date
Version
Comments
2016‐08‐25
0.1
Preliminary draft release.
2016‐10‐24
0.2
Added BT antenna information and reference.
23/23

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