LSTM300U Wireless Transceiver User Manual Users Manual 1 Magnum Energy Solutions

Magnum Energy Solutions Wireless Transceiver

FCC ID Filing: 2ANUH-LSTM300U

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USER MANUAL
LSTM 300U Scavenger Transceiver Module
COPYRIGHT 2017 Magnum Energy Solutions.
Cannot be duplicated without written permission.
Observe precautions! Electrostatic sensitive devices!
Magnum Energy Solutions
43 Village Way
Hudson, OH
44056
Phone 330-656-9365
330-656-9368
Fax
info@magnumes.com
www.magnumes.com
Subject to modifications
LSTM300U User Manual
V1.2 March 13, 2018
Page 1/41
USER MANUAL
LSTM 300U Scavenger Transceiver Module
TABLE OF CONTENT
MODULE VARIANTS AND RELATED DOCUMENTS .............................................. 3
2.1
2.2
2.3
2.4
GENERAL DESCRIPTION ............................................................................... 3
Basic functionality ....................................................................................... 3
Technical data............................................................................................. 5
Physical dimensions ..................................................................................... 5
Environmental conditions.............................................................................. 6
FUNCTIONAL DESCRIPTION .......................................................................... 6
3.1 Simplified firmware flow chart and block diagram ............................................. 6
3.2 Hardware pin out......................................................................................... 7
3.3 Pin description and operational characteristics ................................................. 8
3.3.1 GPIO supply voltage ...............................................................................10
3.3.2 Analog and digital inputs .........................................................................11
3.4 Absolute maximum ratings (non operating) ....................................................12
3.5 Maximum ratings (operating) .......................................................................12
3.6 Power management and voltage regulators ....................................................12
3.7 Charge control output (CCO) ........................................................................13
3.8 Configuration .............................................................................................14
3.8.1 Hardware-defined configuration settings ....................................................14
3.8.2 Configuration via programming interface....................................................15
3.9 Radio telegram ..........................................................................................17
3.9.1 Normal operation....................................................................................17
3.9.2 Teach-in telegram ..................................................................................18
3.10 Transmit timing .....................................................................................18
3.11 Energy consumption ..............................................................................19
APPLICATIONS INFORMATION ......................................................................20
4.1 How to connect an energy harvester and energy storage..................................20
4.2 Using SCO pin ............................................................................................23
4.3 Using WAKE pins ........................................................................................23
4.4 Using RVDD ...............................................................................................24
4.5 Antenna options LSTM 300U ........................................................................25
4.5.1 Overview ...............................................................................................25
4.5.2 Whip antenna ........................................................................................25
4.5.3 External Antenna (ANT-916-CW-RCS, ANT-916-CW-HWR-RPS Linx
Technologies) ........................................................ Error! Bookmark not defined.
4.6 Positioning of the whip antenna ....................................................................26
4.7 Recommendations for laying a whip antenna ..................................................28
4.8 Layout recommendations for foot pattern.......................................................29
4.9 Soldering information ..................................................................................33
4.10 Tape & Reel specification ........................................................................34
4.11 Transmission range ................................................................................35
5.1
5.2
5.3
5.4
AGENCY CERTIFICATIONS ...........................................................................36
FCC (United States) Certification ..................................................................36
FCC (United States) Regulatory Statements ..................................................39
ISED (former Industry Canada) Certification...................................................40
ISED (former Industry Canada) Regulatory Statements ...................................41
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USER MANUAL
LSTM 300U Scavenger Transceiver Module
MODULE VARIANTS AND RELATED DOCUMENTS
The LSTM 300 Scavenger Transceiver Module is available in following operating frequency
variants:
LSTM 300U: 902.875 MHz
This document describes operation of LSTM 300U module with their built-in firmware. If you
want to write own firmware running on the integrated micro controller or need more detailed information on the Dolphin core please also refer to:
 Dolphin Core Description
 Dolphin API Documentation
In addition we recommend following our application notes, in particular:
 AN102: Antenna Basics – Basic Antenna Design Considerations for EnOcean based




Products
AN105: 315 MHZ Internal Antenna Design – Considerations for EnOcean based Products
AN207: ECS 300/310 Solar Panel - Design Considerations
AN208: Energy Storage – Design Considerations
AN209: STM 300 THERMO OR BATTERY POWERED – Power Supply Alternatives to Solar
Panel
2.1
GENERAL DESCRIPTION
Basic functionality
The extremely power saving RF transmitter module
LSTM 300U enables the realization of wireless and
maintenance free sensors and actuators such as room
operating panels, motion sensors or valve actuators
for heating control.
Power supply is provided by an external energy harvester, e.g. a small solar cell (e.g. EnOcean ECS 3x0)
or a thermal harvester.
An energy storage device can be connected externally
to bridge periods with no supply from the energy harvester.
A voltage limiter avoids damaging of the module when
the supply from the energy
harvester gets too high.
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USER MANUAL
LSTM 300U Scavenger Transceiver Module
The module provides a user-configurable cyclic wake up.
After wake up, a radio telegram (input data, unique 32 bit sensor ID, checksum) will be
transmitted in case of a change of any digital input value compared to the last transmission
or in case of a significant change of measured analogue values (different input sensitivities
can be selected).
In case of no relevant input change, a redundant retransmission signal is sent after a user
configurable number of wake-ups to announce all current values. In addition, a wake up can
also be triggered externally.
Features with built-in firmware
 3 A/D converter inputs
 4 digital inputs
 Configurable wake-up and transmission cycle
 Wake-up via Wake pins
 Voltage limiter
 Threshold detector
 Application notes for calculation of energy budgets and management of external energy
storages
Product variants
 LSTM 300U
Features accessible via API
Using the Dolphin API library it is possible to write custom firmware for the module.
LSTM 300U is in-system programmable. The API provides:





Integrated 16 MHz 8051 CPU with 32 kB FLASH and 2 kB SRAM
Receiver functionality
Various power down and sleep modes down to typ. 0.2 µA current consumption
Up to 16 configurable I/Os
10 bit ADC, 8 bit DAC
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LSTM 300U Scavenger Transceiver Module
2.2
Technical data
External whip or 50 Ω antenna mountable
Antenna
Frequency
Data rate
Receiver Sensitivity (at 25 °C)
only via API
Conducted Output Power
@50Ω min / typ /max
Power Supply
Current Consumption
Input Channels
LSTM 300U: 902.875 MHz (FSK)
125 kbps
typ. -98 dBm2) (902.875 MHz)
LSTM 300U: 7 dBm
2.1 V–4.5 V, 2.6 V needed for start-up
Deep Sleep mode : typ. 0.2 µA
Transmit mode: typ. 24 mA, max. 33 mA
Receive mode (via API only): typ. 33 mA, max. 43 mA
4x digital input, 2x WAKE input , 3x analog input
Resolution: 3x 8 bit or 1x 10 bit, 1x 8 bit, 1x 6 bit
Radio Regulations
LSTM 300U: FCC (US) / ISED (CA)
1) according to ISO/IEC 14543-3-10
2) @ 0.1% telegram error rate (based on transmitted sub-telegrams)
2.3
Physical dimensions
22 x 19 x 3.1 mm
PCB dimensions
1.9 g
Weight
Unless otherwise specified dimensions are in mm.
Tolerances:
PCB outline dimensions ±0.2 mm
All other tolerances ±0.1 mm
LSTM 300U (pads on bottom side of PCB!)
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LSTM 300U Scavenger Transceiver Module
2.4
Environmental conditions
Operating temperature
-25 °C … +85 °C
Storage temperature
-40 °C … +85 °C
Storage temperature in tape & reel package
-20 °C … +50 °C
0% … 93% r.h., non-condensing
Humidity
3.1
FUNCTIONAL DESCRIPTION
Simplified firmware flow chart and block diagram
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LSTM 300U Scavenger Transceiver Module
RF_50
VDD
IOVDD
GND
VDDLIM
RF_WHIP
RF Transceiver
Power
Management
V_OUT
DVDD
µController
3.2
PROG_EN
CW_0
CW_1
CP_0
CP_1
SCO
CCO
RESET
Ultra Low Power Unit
WAKE0
LRN
UVDD
Mixed I/O
Interface
LED
DI_0
DI_1
DI_2
DI_3
AD_0
AD_1
AD_2
Hardware pin out
The figure above shows the pin out of the LSTM 300U hardware. The pins are named according to the naming of the EO3000I chip to simplify usage of the DOLPHIN API.
The table in section 3.3 shows the translation of hardware pins to a naming that fits the
functionality of the built-in firmware.
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LSTM 300U Scavenger Transceiver Module
When writing own firmware based on the DOLPHIN API please refer to the Dolphin Core
Description and use this manual only for information regarding the module hardware, such
as pin out, layout recommendations, charging circuitry, antenna options, and approvals.
3.3
Pin description and operational characteristics
LSTM 300x
Hardware
Symbol
LSTM
300x
pin #
GND
VDD
1, 5, 7,
17, 24,
26, 28,
31
RVDD
DVDD
25
UVDD
32
VDDLIM
IOVDD
23
RESET
27
PROG_EN
18
ADIO0
ADIO1
10
ADIO2
11
LSTM
300x
Firmware
Symbol
GND
Function
Characteristics
Ground connection
Must be connected to GND
VDD
Supply voltage
2.1 V – 4.5 V;
Start-up voltage: 2.6 V
Maximum ripple: see 3.6
V_OUT
RF supply voltage
1.8 V. Output current: max. 10 mA.
regulator output
See 0!
Supply for external circuitry, available while not in deep sleep mode.
DVDD
Digital supply volt- 1.8 V. Output current: max. 5 mA
age regulator out- Supply for external circuitry, availaput
ble
while not in deep sleep mode.
UVDD
Ultra low power
Not for supply of external circuitry!
supply voltage reg- For use with WAKE pins, see section
ulator output
4.3.
Max. 1 µA output current!
VDDLIM
Supply voltage
Limitation voltage: 4.5 V
limiter input
Maximum shunting current: 50 mA
IOVDD
GPIO supply voltMust be connected to desired interage
face supply voltage as specified in
3.5, e.g. to DVDD. See also 0
RESET
Reset input
Active high reset (1.8 V)
Programming I/F
Connect external 10 kΩ pull-down.
PROG_EN Programming I/F
HIGH: programming mode active
LOW: operating mode
Digital input, connect external 10 kΩ
pull-down.
AD_0
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit (default) or 10 bit.
See also 3.3.2.
AD_1
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit (default) or 6 bit.
See also 3.3.2.
AD_2
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit.
See also 3.3.2.
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LSTM 300U Scavenger Transceiver Module
ADIO3
12
DI_0
Digital input
ADIO4
13
DI_1
Digital input
ADIO5
14
DI_2
Digital input
ADIO6
15
DI_3
Digital input
ADIO7
16
LED
Transmission
indicator LED
SCSEDIO0
19
CW_1
SCLKDIO1
20
CW_0
WSDADIO2
21
CP_1
RSDADIO3
22
CP_0
WXIDIO
29
SCO
Programming I/F
Encoding input for
wake-up cycle
Programming I/F
Encoding input for
wake-up cycle
Programming I/F
Encoding input for
retransmission
Programming I/F
Encoding input for
retransmission
Programming I/F
Sensor control
WXODIO
30
CCO
Charge control
WAKE0
33
WAKE0
Wake input
WAKE1
34
LRN
LRN input
RF_WHIP
RF_50
RF_WHIP RF output
RF_50
RF output
© 2017 Magnum Energy Solutions | www.magnumes.com
Input read ~2 ms after wake-up.
See also 3.3.2.
Input read ~2 ms after wake-up.
See also 3.3.2.
Input read ~2 ms after wake-up.
See also 3.3.2.
Input read ~2 ms after wake-up.
See also 3.3.2.
Max. output current:
2 mA @ IOVDD=3.3 V
0.65 mA @ IOVDD=1.8 V
Leave open or connect to GND
Leave open or connect to GND
Leave open or connect to GND
Leave open or connect to GND
Digital output, max. current 15 µA
HIGH ~x ms before analog inputs are
read
(x=0…508 ms; default 2 ms.)
LOW at wake-up and after reading of
analog inputs
Polarity can be inverted, delay time
can be programmed, see 3.8.2.
Max output current 15 µA
See 3.7 for description of behaviour.
Change of logic state leads to wakeup and transmission of a telegram.
See also 4.3.
Change of logic state to LOW leads to
wake-up and transmission of teach-in
telegram if a manufacturer code is
programmed. See also 3.9.2 and 4.3.
Output for whip antenna
50 Ohm output for external antenna
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LSTM 300U Scavenger Transceiver Module
3.3.1 GPIO supply voltage
For digital communication with other circuitry (peripherals) the digital I/O configured pins of
the mixed signal sensor interface (ADIO0 to ADIO7) and the pins of the programming interface (SCSEDIO0, SCLKDIO1, WSDADIO2, RSDADIO3) may be operated from supply voltages
different from DVDD.
An interface supply voltage pin IOVDD is available for such use cases which can be connected
either to DVDD or to an external supply within the tolerated voltage range of IOVDD.
Note that the wristwatch XTAL I/Os WXIDIO and WXODIO are always supplied from UVDD.
If DVDD=0 V (e.g. in any sleep mode or if VDD200
DNL
8 bit measurement
Offset error
Gain error
INL
+1
-4
+1
-1
Code <=50
Code >50
DNL
Offset Error: Describes the offset between the minimal possible code and
Units
kHz
MΩ
10
Effective measurement resolution
10 bit measurement
Offset error
Gain error
INL
Max
RVDD0.12
Internal reference RVDD/2
Input coupling
Measurement bandwidth 1
Input impedance
Typ
pF
Bit
36
62
+6
-23
+6
-10
<±0.5
LSB
LSB
LSB
16
+2
-6
+2
-3
<±0.125
LSB
LSB
LSB
LSB
LSB
LSB
LSB
CodeADC
code 0x00.
0xFF
Gain Error
Gain Error: Describes the offset between maximum possible code and full
ideal
scale (e.g. 0x3FF for 10 bit measurements).
real
Integral Non-Linearity (INL): Describes the difference between the ideal
characteristics and the real characteristics. Only values between minimum and
maximum possible code are considered (excluding offset error and gain error).
Differential Non-Linearity (DNL): Measures the maximum deviation from
the ideal step size of 1 LSB (least significant bit).
Effective resolution: Results from the signal-noise ratio of the ADC and is
given in Bit. The number describes how many bits can be measured stable. The
criterion selected here is that the noise of DNL is <±0.5 LSB.
Measurement Bandwidth: The measurement bandwitdh is internally limited by filters. A quasi static signal must be applied as long as the filter
Offset Error
0x00
needs to settle. SettlingTime= 1/(MeasurementBandwidth)*ln(2^resolution[Bit])
For further details please refer to the Dolphin Core Description.
3 dB input bandwidth, resulting in 111 µs settling time to achieve a deviation of an input
signal <1 LSB (<0.098% @ 10 bit resolution).
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UADC
URVDD
USER MANUAL
LSTM 300U Scavenger Transceiver Module
Parameter
Digital Input Mode
Conditions / Notes
Min
Typ
Max
2/3
IOVDD
Input HIGH voltage
Input LOW voltage
Pull up resistor
3.4
Symbol
VDD
VDDLIM
IOVDD
GND
VINA
VIND1
VIND2
3.5
Symbol
VDD
VDDLIM
IOVDD
GND
VINA
VIND1
VIND2
3.6
@IOVDD=1.7 … 1.9 V
@IOVDD=3.0 … 3.6 V
90
38
Units
132
54
1/3
IOVDD
200
85
kΩ
kΩ
Absolute maximum ratings (non operating)
Parameter
Supply voltage at VDD and VDDLIM
GPIO supply voltage
Ground connection
Voltage at every analog input pin
Voltage at RESET, WAKE0/1, and every digital input
pin except WXIDIO/WXODIO
Voltage at WXIDIO / WXODIO input pin
Min
-0.5
Max
5.5
Units
-0.5
-0.5
-0.5
3.6
3.6
-0.5
Maximum ratings (operating)
Parameter
Min
VOFF
Supply voltage at VDD and VDDLIM
GPIO supply voltage (see also 0)
Ground connection
Voltage at every analog input pin
Voltage at RESET, WAKE0/1, and every digital input
pin except WXIDIO / WXODIO
Voltage at WXIDIO / WXODIO input pin
Max
4.5
Units
1.7
3.6
2.0
3.6
2.0
Power management and voltage regulators
Symbol Parameter
Conditions / Notes
Voltage Regulators
Ripple on VDD, where
VDDR
Min(VDD) > VON
UVDD
Ultra Low Power supply
RVDD
RF supply
DVDD
Digital supply
Voltage Limiter
VLIM
Limitation voltage
ILIM
Shunting current
© 2017 Magnum Energy Solutions | www.magnumes.com
Min
1.7
1.7
Typ
1.8
1.8
1.8
Max
Units
50
mVpp
1.9
1.9
50
mA
4.5
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LSTM 300U Scavenger Transceiver Module
Threshold Detector
VON
Turn on threshold
VOFF
Turn off threshold
Automatic shutdown if
VDD drops below VOFF
2.3
1.85
2.45
1.9
2.6
2.1
Voltage Limiter
LSTM 300U provides a voltage limiter which limits the supply voltage VDD of LSTM 300U to
a value VDDLIM which is slightly below the maximum VDD ratings by shunting of sufficient
current.
Threshold detector
LSTM 300U provides an ultra low power ON/OFF threshold detector. If VDD > VON, it turns
on the ultra low power regulator (UVDD), the watchdog timer and the WAKE# pin circuitry.
If VDD ≤ VOFF it initiates the automatic shut down of STM 300x.
3.7
Charge control output (CCO)
After start-up LSTM 300U provides the output signal of the threshold detector at the CCO
output pin. CCO is supplied by UVDD. The CCO output value remains stable also when
LSTM 300U is in deep sleep mode.
Behaviour of CCO
At power up: TRISTATE until VDD>VON then HIGH
if VDD>VON then HIGH
if VDD VON
VDD < VON
VDD < VOFF
VON
VOFF
1.8V
TRISTATE
or LOW
~0.9V
TRISTATE
0V
For definition of VON and VOFF please refer to 3.6.
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LSTM 300U Scavenger Transceiver Module
3.8
Configuration
LSTM 300U provides several encoding input pins allowing to configure certain parameters.
LSTM 300U checks the status of these pins at every wake-up. It is possible to override these
hardware-defined configuration settings by software. Both mechanisms are described below.
3.8.1 Hardware-defined configuration settings
On LSTM 300U it is possible to define wake-up cycle time and redundant transmission frequency via dedicated configuration inputs.
Wake-up cycle time configuration
Two input pins – CW_0 and CW_1 – define the wake-up cycle time. Each of these pins can
either be connected to GND or left unconnected. The resulting wake-up cycle time is shown
in the table below.
CW_0
CW_1
Wake-up cycle time
NC
NC
1 s ±20%
GND
NC
10 s ±20%
NC
GND
100 s ±20%
GND
GND
No cyclic wake-up
Redundant retransmission
Two input pins – CP_0 and CP_1 – control an internal counter which is decreased at every
wake-up signal. Once the counter reaches zero the redundant retransmission signal is sent.
Each of these pins can either be connected to GND or left unconnected.
The resulting wake-up cycle time is shown in the table below.
CP_0 CP_1
NC
NC
Number of wake-ups that
trigger a redundant retransmission
Every timer wake-up signal
GND
NC
Every 7th - 14th timer wake-up signal, affected at random
NC
GND
Every 70th - 140th timer wake-up signal, affected at random
GND
GND
No redundant retransmission
A radio telegram is always transmitted after wake-up via WAKE pins!
After transmission the counter is reset to a random value within the specified interval.
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3.8.2 Configuration via programming interface
Via the programming interface the parameters stored in the configuration area can be modified which provides a lot more configuration options.
Note that values set via programming interface override hardware settings.
Note also that these settings are read only after RESET or power-on reset and not at every
wake-up of the module.
The interface is shown in the figure below:
LSTM
EnOcean provides EOPX (EnOcean Programmer, a command line program) and Dolphin Studio (Windows application for chip configuration, programming, and testing) and the USB/SPI
programmer device as part of the EDK 350 developer´s kit.
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LSTM 300U Scavenger Transceiver Module
Configurable Parameters
The table below summarizes the parameters that can be configured via the programming
interface.
Parameter
Configuration
via pins
See section 3.8.1
Configuration
via programming interface
Value can be set from 1 s to 65534 s
Redundant
Retransmission cycle
See section 3.8.1
Min…Max values for random interval
If Min=Max -> random switched off
Threshold values for
analog inputs
No
The default values are: 5 LSB at AD_1 input, 6
LSB at AD_0 and 14 LSB at AD_2.
The threshold value can be set between 0 and
full scale for every input individually.
Resolution of the analog inputs
No
Default: AD_0: 8 bit, AD_1: 8 bit, AD_2: 8 bit
Option: AD_0: 10 bit, AD_1: 6 bit, AD_2: 8 bit
Input mask
No
A digital input mask for ignoring changes on
digital input pins. At default all input bits are
checked.
Delay time between SCO on
and sampling moment
No
Value can be set from 0 ms to 508 ms in steps
of 2 ms. Default delay time is 2 ms.
Source of AD_2
No
Select if AD_2 contains measurement value of
external ADIO2 pin or from internal VDD/4
Polarity of SCO signal
No
Polarity can be inversed.
Edge of wake pin change
causing a telegram transmission
No
Every change of a wake pin triggers a wake-up.
For both wake pins it can be configured individually if a telegram shall be sent on rising, falling
or both edges.
Manufacturer ID and EEP
No
(EnOcean Equipment Profile)
Information about manufacturer and type of device. This feature is needed for “automatic” interoperability of sensors and actuators or bus
systems. Information how to set these parameters requires an agreement with EnOcean.
Unique manufacturer IDs are distributed by the
EnOcean Alliance.
Wake up cycle
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3.9
Radio telegram
3.9.1 Normal operation
The diagram below summarized the content of a data telegram as seen at programming interface of LSTM 300U or at DOLPHIN API:
= 0x07 (Telegram type “4BS”)
ORG
Data_Byte1..3
3x8bit mode:
DATA_BYTE3
DATA_BYTE2
DATA_BYTE1
= Value of AD_2 analog input
= Value of AD_1 analog input
= Value of AD_0 analog input
1x8bit, 1x6it, 1x10bit mode:
DATA_BYTE3
= Value of AD_2
DATA_BYTE2
= Upper 2 bits of AD_0 and value of AD_1
DATA_BYTE1
= Lower 8 bits Value of AD_0 analog input
DATA_BYTE3
DATA_BYTE2
AD_2
7 6
5 4
3 2
DATA_BYTE1
AD_1
1 0
5 4
3 2
AD_0
1 0
9 8
7 6
5 4
3 2
1 0
DATA_BYTE0 = Digital sensor inputs as follows:
Bit 7
Bit 0
Reserved, set to 0 DI_3 DI_2 DI_1 DI_0
ID_BYTE3
ID_BYTE2
ID_BYTE1
ID_BYTE0
module
module
module
module
identifier
identifier
identifier
identifier
(Byte3)
(Byte2)
(Byte1)
(Byte0)
The voltages measured at the analog inputs can be calculated from these values as follows:
U=(Value of AD_x)/(2n)x1.8 V
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n=resolution of channel in bit
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3.9.2 Teach-in telegram
If a manufacturer code is programmed into the module then the module transmits – instead
of a normal telegram – a dedicated teach-in telegram if:
 Digital input DI_3=0 at wake-up or
 Wake-up is triggered via WAKE1 pin (LRN input)
With this special teach-in telegram it is possible to identify the manufacturer, the function
and the type of a device. There is a list available from the EnOcean Alliance describing the
functionalities of the respective products.
If no manufacturer code is programmed then the module does not react to events
on WAKE1 (LRN input)!
ORG
= 0x07 (Telegram type “4BS”)
DATA_BYTE0..3 see below
LRN Type = 1
LRN = 0
DI0..DI2: current status of digital inputs
Profile, Type, Manufacturer-ID defined by manufacturer
RE0..2: set to 0
ID_BYTE3
ID_BYTE2
ID_BYTE1
ID_BYTE0
ORG
module
module
module
module
Data_Byte3
Function
6 Bit
3.10
identifier
identifier
identifier
identifier
Data_Byte2
Type Manufacturer7 Bit ID 11 Bit
(Byte3)
(Byte2)
(Byte1)
(Byte0)
Data_Byte1
Data_Byte0
ID
LRN Type RE2 RE1 RE0 LRN DI2 DI1 DI0
1Bit
1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit
Transmit timing
The setup of the transmission timing allows avoiding possible collisions with data packages
of other EnOcean transmitters as well as disturbances from the environment. With each
transmission cycle, 3 identical subtelegrams are transmitted within 40 ms.
Transmission of a subtelegram lasts approximately 1.2 ms. The delay time between the three
transmission bursts is affected at random.
If a new wake-up occurs before all sub-telegrams have been sent, the series of
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transmissions is stopped and a new series of telegrams with new valid measurement values is transmitted.
3.11
Energy consumption
100
10
Current [mA]
0.1
0.01
0.001
0.0001
0.00001
10
20
30
40
50
60
70
80
90
100
Time [ms]
Current Consumption of LSTM 300U
Charge needed for one measurement and transmit cycle: ~130 µC
Charge needed for one measurement cycle without transmit: ~30 µC
(current for external sensor circuits not included)
Calculations are performed on the basis of electric charges because of the internal linear
voltage regulator of the module. Energy consumption varies with voltage of the energy
storage while consumption of electric charge is constant.
From these values the following performance parameters have been calculated:
Wake
cycle
[s]
Transmit
interval
Operation Time
in darkness [h]
when storage
fully charged
10
10
10
100
100
100
10
100
10
100
10
100
0.5
1.7
2.1
5.1
16
20
43
98
112
Required reload
time [h] at 200
lux within 24 h
for continuous
operation
24 h operation
after 6 h
illumination
at x lux
storage too small
storage too small
storage too small
storage too small
21
16.8
7.8
3.6
storage too small
storage too small
storage too small
storage too small
storage too small
storage too small
260
120
100
Current
Illuminain µA retion level
quired
in lux for
for concontinuous tinuous
operation operation
5220
1620
1250
540
175
140
65
30
25
130.5
40.5
31.3
13.5
4.4
3.5
1.6
0.8
0.6
Assumptions:
 Storage PAS614L-VL3 with 0.25 F, Umax=3.2 V, Umin=2.2 V, T=25°C
 Consumption: Transmit cycle 100 µC, measurement cycle 30 µC
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 Indoor solar cell, operating values 3 V and 5 µA @ 200 lux fluorescent light
(e.g. ECS 300 solar cell)
 Current proportional to illumination level (not true at very low levels!)
These values are calculated values, the accuracy is about +/-20%!
APPLICATIONS INFORMATION
4.1
How to connect an energy harvester and energy storage
LSTM 300U is designed for use with an external energy harvester and external energy storage. In order to support both a fast start-up time and long term operation with no energy
supply available usually two different types of energy storages are used.
A small (short term) energy storage fills quickly and allows a fast start-up while a large (long
term) energy storage fills more slowly but can provide a large buffer for times where no
energy is available, e.g. at night in a solar powered sensor.
Both short term and long term storage are typically implemented as capacitors. The short
term storage capacitor is usually in the range of 470 to 1000 µF while for the long term
storage a capacity of 0.25 F is suggested.
LSTM 300U provides a digital output CCO (see also 3.7) which allows controlling the charging
of such two storages.
The block diagram below shows a typical implementation of a suitable charging circuit.
There, capacitor C1 acts as short term storage while capacitor C2 provides the long term
storage.
If both energy storages are depleted and the supply voltage is below the VON voltage level
then only the small storage is charged. Once the VON threshold is reached, the CCO output
signal changes and the system will start to charge the large storage.
Charge switcher
Overvoltage
Energy source
protection
e.g. solar panel
LSTM
300U
Undervoltage protection
Vdd
VDDLIM
CCO
RC delay
C1
Short term storage
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C2
Long term storage
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The circuit below is designed for an energy storage capacitor specified for 3.3 V (e.g.
PAS614L-VL3).
LSTM300
Charge switcher functionality
The charge switcher as shown above connects both short term storage (C1) and long term
storage (C2) parallel to the energy source as soon as the LSTM 300U supply voltage reaches
the typical VON threshold of 2.45 V.
If VDD subsequently falls below VON, the energy source will be switched back to short term
storage alone which will enable faster recharging. As long as the voltage of the long term
storage remains below VON, the charge switcher will continuously switch the energy source
between short term and long term storage, trying to ensure continuous device operation.
This mechanism mitigates the effect of a potentially long charge time required to charge the
long term storage sufficiently for the start of operation.
In addition, the short term storage will not be charged over the VON threshold until the
voltage on the long term storage also exceeds VON.
Charge switcher is the PMOS transistor Q1, driven from the LSTM 300U charge control output
CCO over T1A. If the LSTM 300U VDD voltage is below the VON threshold, only the small
storage (C1) is filled via D3.
Once the VON threshold is reached, the CCO control signal goes High, T1B and Q2 are turned
on and the long term storage (C2) will be filled via Q2.
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Overvoltage protection
Typical long term storage solutions have a rated operating voltage that must be not exceeded. Overvoltage protection is therefore an essential aspect of the supply circuit design.
In the circuit suggested above, overvoltage protection is implemented by an
S-1000C32-M5T1x voltage detector from Seiko (SII) - or alternatively a member of the
NCP300LSN30T1G series from ON Semiconductor - which limits the maximum charging voltage to 3.3 V in order to avoid damaging long term energy storage. If a different voltage limit
is required, this voltage detector has to be replaced by a suitable voltage variant.
As soon as the voltage on the voltage detector input exceeds the selected threshold, the
voltage detector transitions to a logic “High” level on its output which is connected to the T1A
emitter. The T1A base will then have a lower voltage than its emitter and the transistor T1A
will be turned off. That will result in the load switch Q1 being turned off as well which will
switch off the supply to the long term storage.
The selected voltage detector must both have an ultra-low quiescent current in the operating
range and an appropriate threshold voltage in accordance to the parameters of the selected
long term energy storage (e.g. a 3.2 V nominal threshold for a 3.3 V capacitor).
If the selected threshold is too low then energy would be wasted. If the nominal threshold is
too high then energy storage life expectation might be affected. The S-1000C32-M5T1x voltage detector with a 3.2 V nominal threshold provides a good compromise between those two
constraints.
Undervoltage protection
Certain types of long term energy storage elements (such as PAS capacitors) should not be
deep discharged to voltages below 1.5 V to avoid long term degradation of their capacity and
lifetime. Therefore undervoltage protection is essential for systems containing such devices.
In the circuit above, undervoltage protection is controlled through Q2.
In normal operation, when VDD reaches the VON threshold, the LSTM 300U charge control
output pin (CCO) goes high, T1B rapidly discharges C3 to GND and Q2 turns on long term
storage.
If VDD falls below the VOFF threshold then the LSTM 300U charge control CCO goes low and
the C3 charge recovers very slowly over R6. If VDD remains below VOFF (and CCO consequently remains low) for a longer time then C3 will be charged sufficiently to turn off Q2 and
thus switch off the discharge path from the long term storage C2 via D4 to LSTM 300U thus
avoiding deep discharge of C2.
For more details and alternative circuits please refer to application note AN208.
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4.2
Using SCO pin
LSTM 300U provides an output signal at SCO which is suited to control the supply of the
sensor circuitry. This helps saving energy as the sensor circuitry is only powered as long as
necessary.
In the default configuration SCO provides a HIGH signal 2 ms (delay time) before the
analog inputs are read. It is possible to adjust the delay time and also the polarity of the
signal via the programming interface (see 3.8.2).
LSTM300
The figure above illustrates the use of the SCO pin (with default polarity) to control an external sensor circuit.
Do not supply sensors directly from SCO as this output can only provide maximum
15 µA!
4.3
Using WAKE pins
The logic input circuits of the WAKE0 and WAKE1 pins are supplied by UVDD and therefore
also usable in “Deep Sleep Mode” or “Flywheel Sleep Mode” (via API only). Due to current
minimization there is no internal pull-up or pull-down at the WAKE pins.
When LSTM 300U is in “Deep Sleep Mode” or “Flywheel Sleep Mode” (via API only) and the
logic levels of WAKE0 and / or WAKE1 are changed then LSTM 300U starts up.
There are no internal pull-up or pull-down cells at the WAKE pins.
External circuitry is required to ensure that the WAKE pins are at a defined logic
level at any time.
When using the UVDD regulator output as source for the logic HIGH of the WAKE
pins, it is strongly recommended to protect the ultra low power UVDD voltage
regulator against (accidental) excessive loading by connection of an external
1.8 MΩ series resistor.
To avoid keybounce we strongly recommend adding a PI filter at wake inputs with
buttons or keys.
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LSTM300(C)
The figure above shows two examples how the WAKE inputs may be used. When the LRN
button is pressed WAKE1 is pulled to GND and a teach-in telegram is transmitted. As long
as the button is pressed a small current is flowing from UVDD to GND. WAKE0 is connected
to a toggle switch. There is no continuous flow of current in either position of the switch.
If more digital inputs with WAKE functionality are needed in an application then WAKE0 can
be combined with some of the digital inputs as shown below. This circuit includes also PI filters against keybouncing. The proposed resistor and capacitor values can be adapted to
customer needs.
LSTM300(C)
4.4
Using RVDD
If RVDD is used in an application circuit a serial ferrite bead shall be used and wire length
should be as short as possible (<3 cm). The following ferrite beads have been tested:
74279266 (0603), 74279205 (0805) from Würth Elektronik. During radio transmission and
reception only small currents may be drawn (I<100 µA).
Pulsed current drawn from RVDD has to be avoided. If pulsed currents are necessary, sufficient blocking has to be provided.
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4.5
Antenna options LSTM 300U
4.5.1 Overview
Several antenna types have been investigated by Magnum Energy Solutions. Please refer to
application notes AN102, and AN105 (EnOcean Website) which give an overview on our
recommendations.
902.875 MHz modules (LSTM 300U) please note that a full approval is
needed if modules are used with antennas other than the specified antennas.
4.5.2 Whip antenna
902.875
Antenna:
Minimum
Minimum
MHz
64 mm wire, connect to RF_WHIP
GND plane: 50 mm x 50 mm
distance space: 10 mm
Antenna Test Procedure:
For production, the optimum antenna length
64mm should be used, two bridgeable (short, few
mm optional soldering) in production fine tuning
elements (e.g. L+/- 5%) to increase the tolerances for the later mass production (different PCB
materials or suppliers, specific device mounting
undergrounds) can also be implemented like in
the ex-ample shown below:
The inspection will be 5% of the production batch to make sure the length and the part
number is correct.
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4.5.3 External Antenna (ANT-916-CW-RCS, ANT-916-CW-HWR-RPS Linx
Technologies)
The RCS Series is ideally suited for products requiring an attractive, yet compact, ¼-wave
antenna in a right-angle form factor. The antennas attach via a Part 15 compliant RP-SMA
connector.
The HWR Series ½-wave center-fed dipole antennas deliver outstanding performance in a
rugged and cosmetically attractive package. The articulating base allows the antenna to tilt
90 degrees and rotate 360 degrees. The antenna’s internal counterpoise eliminates external
ground plane dependence and maximizes performance. HWR Series antennas attach via a
standard SMA or Part 15 compliant RP-SMA connector. Custom colors and connectors are
available for volume OEM customers.
RCS Series Electrical Specifications
Center Frequency: 916MHz Recom.
Freq. Range: 886–946MHz
Wavelength: ¼-wave
VSWR: < 1.9 typical at center
Peak Gain: 3.3dBi
Impedance: 50-ohms
Oper. Temp. Range: –20°C to +85°C
Connector: RP-SMA
HWR Series Electrical Specifications
Center Frequency: 916MHz
Recom. Freq. Range: 900–930MHz
Bandwidth: 30MHz
Wavelength: ½-wave
VSWR: ≤ 2.0 typical
Peak Gain: 1.2dBi
Impedance: 50-ohms
Connection: RP-SMA
Oper. Temp. Range: –30°C to +80°C
Mounting 50 W antennas
For mounting the receiver at bad RF locations (e.g. within a metal cabinet), an external
50W antenna may be connected. The whip antenna must be removed
Modification procedure:
 LTCM 300U: Remove whip antenna, then mount RP-SMA connector.
 LTCM 310U: Remove whip antenna, then mount RP-SMA connector.
 LSTM 300U: Remove whip antenna, then mount RP-SMA connector.
The module should provide soldering pads for an RP- SMA connector, e.g. from Molex, LLC:
Part number : 0733910320
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4.6
Host PCB Trace Layout Considerations
4.7
Positioning of the whip antenna
Positioning and choice of receiver and transmitter antennas are the most important factors
in determining system transmission range.
For good receiver performance, great care must be taken about the space immediately
around the antenna since this has a strong influence on screening and detuning the antenna.
The antenna should be drawn out as far as possible and must never be cut off. Mainly the far
end of the wire should be mounted as far away as possible (at least 15 mm) from all metal
parts, ground planes, PCB strip lines and fast logic components (e.g. microprocessors).
Do not roll up or twist the whip antenna!
Radio frequency hash from the motherboard desensitizes the receiver. Therefore:
 PCB strip lines on the user board should be designed as short as possible
 A PCB ground plane layer with sufficient ground via is strongly recommended
 Keep antenna away from noise generating parts of the circuit. Problems may especially
occur with switching power supplies!
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4.7.1 Recommendations for laying a whip antenna

PCB with GND
PCB without GND
Antenna too close
to GND area


Antenna end led
back to foot point
Antenna too close
to GND area

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4.8
Layout recommendations for foot pattern
The length of lines connected to I/Os should not exceed 5 cm.
It is recommended to have a complete GND layer in the application PCB, at least
in the area below the module and directly connected components (e.g. mid-layer
of your application PCB).
Due to non-isolated test points there are live signals accessible on the bottom
side of the module.
Please regard the following advices to prevent interference with your application
circuit:

Avoid any copper structure in the area directly underneath the module
(top-layer layout of your application PCB). If this is not possible in your
design, please provide coating on top of your PCB to prevent short circuits
to the module test pads. All bare metal surfaces including via have to be
covered (e.g. adequate layout of solder resist).

It is mandatory that the area marked by the circle in the figure below is
kept clear of any conductive structures in the top layer and 0.3 mm below. Otherwise RF performance will be degraded!
Furthermore, any distortive signals (e.g. bus signals or power lines) should not
be routed underneath the module. If such signals are present in your design, we
suggest separating them by using a ground plane between module and these signal lines.
The RVDD line should be kept as short as possible. Please consider recommendations in section 0.
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4.8.1 Recommended foot pattern
Top layer
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Solder resist top layer
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Solder paste top layer
The data above is also available as EAGLE library.
In order to ensure good solder quality a solder mask thickness of 150 µm is recommended.
In case a 120 µm solder mask is used, it is recommended to enlarge the solder print. The
pads on the solder print should then be 0.1 mm larger than the pad dimensions of the
module as specified in chapter 2.3. (not relative to the above drawing).
Nevertheless an application and production specific test regarding the amount of soldering
paste should be performed to find optimum parameters.
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4.9
Soldering information
LSTM 300U has to be soldered according to IPC/JEDEC J-STD-020C standard.
LSTM 300U shall be handled according to Moisture Sensitivity Level MSL4 which means a
floor time of 72 h. LSTM 300U may be soldered only once, since one time is already consumed at production of the module itself.
Once the dry pack bag is opened, the desired quantity of units should be removed and the
bag resealed within two hours. If the bag is left open longer than 30 minutes the desiccant
should be replaced with dry desiccant. If devices have exceeded the specified floor life time
of 72 h, they may be baked according IPC/JEDEC J-STD-033B at max. 90°C for less than
60 h.
Devices packaged in moisture-proof packaging should be stored in ambient conditions not
exceeding temperatures of 40 °C or humidity levels of 90% r.h.
LSTM 300U modules have to be soldered within 6 months after delivery!
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4.10
Tape & Reel specification
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Tape running direction
4.11
Transmission range
The main factors that influence the system transmission range are type and location of the
antennas of the receiver and the transmitter, type of terrain and degree of obstruction of the
link path, sources of interference affecting the receiver, and “Dead” spots caused by signal
reflections from nearby conductive objects. Since the expected transmission range strongly
depends on this system conditions, range tests should categorically be performed before
notification of a particular range that will be attainable by a certain application.
The angle at which the transmitted signal hits the wall is very important. The effective wall
thickness – and with it the signal attenuation – varies according to this angle. Signals should
be transmitted as directly as possible through the wall. Wall niches should be avoided. Other
factors restricting transmission range:
 Switch mounted on metal surfaces (up to 30% loss of transmission range)
 Hollow lightweight walls filled with insulating wool on metal foil
 False ceilings with panels of metal or carbon fiber
 Lead glass or glass with metal coating, steel furniture
The distance between LSTM300U receivers and other transmitting devices such as computers, audio and video equipment that also emit high-frequency signals should be at least 0.5
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AGENCY CERTIFICATIONS
LSTM 300U modules have been tested to fulfil the approval requirements for FCC/IC (LSTM
300U) based on the built-in firmware.
When developing customer specific firmware based on the API for this
module, special care must be taken not to exceed the specified regulatory
limits, e.g. the duty cycle limitations!
5.1
FCC (United States) Certification
LSTM 300U LIMITED MODULAR APPROVAL
This is an RF module approved for Limited Modular use operating as an intentional transmitting device with respect to 47 CFR 15.247(a-c) and is limited to OEM installation. The
module is optimized to operate using small amounts of energy, and may be powered by a
battery.
The module transmits short radio packets comprised of control signals, (in some cases the
control signal may be accompanied with data) such as those used with alarm systems, door
openers, remote switches, and the like.
The module does not support continuous streaming of voice, video, or any other forms of
streaming data; it sends only short packets containing control signals and possibly data.
The module is designed to comply with, has been tested according to 15.247(a-c), and has
been found to comply with each requirement.
Thus, a finished device containing LSTM 300U radio module can be operated in the United
States without additional Part 15 FCC approval (approval(s) for unintentional radiators may
be required for the OEM’s finished product), under Magnum’s FCC ID number. This greatly
simplifies and shortens the design cycle and development costs for OEM integrators.
The module can be triggered manually or automatically, which cases are described below.
Manual Activation
The radio module can be configured to transmit a short packetized control signal if triggered manually. The module can be triggered, by pressing a switch, for example.
The packet contains one (or more) control signals that is(are) intended to control something at the receiving end. The packet may also contain data.
Depending on how much energy is available from the energy source, subsequent manual
triggers can initiate the transmission of additional control signals. This may be necessary if
prior packet(s) was(were) lost to fading or interference.
Subsequent triggers can also be initiated as a precaution if any doubt exists that the first
packet didn’t arrive at the receiver. Each packet that is transmitted, regardless of whether
it was the first one or a subsequent one, will only be transmitted if enough energy is available from the energy source.
Automatic Activation
The radio module also can be configured to transmit a short packetized control signal
if triggered automatically, by a relevant change of its inputs or in response to receiving a
signal from another transmitter, for example. Again, the packet contains a control signal
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that is intended to control something at the receiving end and may also contain data. As
above, it is possible for the packet to get lost and never reach the receiver. However, if
enough energy is available from the energy source, and the module has been configured to
do so, then another packet or packets containing the control signal may be transmitted at a
later time.
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The device is capable to operate as a repeater, which can receive signals from the following
list of FCC/IC approved transmitters, and retransmit the signals.
LSTM 300U: (902.875 MHz)



LSTM 300U
LTCM 300U
LTCM 310U
FCC ID:2ANUH-LSTM300U
FCC ID:2ANUH-LSTM300U
FCC ID:2ANUH-LSTM300U
IC:23260-LSTM300U
IC:23260-LSTM300U
IC:23260-LSTM300U
OEM Requirements
In order to use Magnum’s FCC ID number, the OEM must ensure that the following conditions are met:

End users of products, which contain the module, must not have the ability to alter the
firmware that governs the operation of the module. The agency grant is valid only when
the module is incorporated into a final product by OEM integrators.

The end-user must not be provided with instructions to remove, adjust or install the
module.

The Original Equipment Manufacturer (OEM) must ensure that FCC labeling requirements are met. This includes a clearly visible label on the outside of the final product.
Attaching a label to a removable portion of the final product, such as a battery cover, is
not permitted. The label must include the following text:
LSTM 300U:
Contains FCC ID: 2ANUH-LSTM300U
The enclosed device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (i.) this device may not cause harmful interference and
(ii.) this device must accept any interference received, including interference that
may cause undesired operation.
When the device is so small or for such use that it is not practicable to place the statement above on it, the information required by this paragraph shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. However, the
FCC identifier or the unique identifier, as appropriate, must be displayed on the device.

The user manual for the end product must also contain the text given above.
The module must be used with only the following approved antenna(s):
Part Number
N.A.
ANT-916-CW-RCS
ANT-916-CW-HWR-RPS
© 2017 Magnum Energy Solutions | www.magnumes.com
Type
Wire/Monopole
RP-SMA Antenna
RP-SMA Antenna
Gain
1.0 dBi
3.3 dBi
1.2 dBi
LSTM300U User Manual | November 2017 | Page 38/41
USER MANUAL
LSTM 300U Scavenger Transceiver Module
5.2
FCC (United States) Regulatory Statements
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. Any changes or modifications not expressly approved by manufacturer could void the
user’s authority to operate the equipment.
IMPORTANT! Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate this equipment.
NOTE: 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.
© 2017 Magnum Energy Solutions | www.magnumes.com
LSTM300U User Manual | November 2017 | Page 39/41
USER MANUAL
LSTM 300U Scavenger Transceiver Module
5.3
ISED (former Industry Canada) Certification
In order to use Magnum’s IC number, the OEM must ensure that the following conditions
are met:
 Labeling requirements for Industry Canada are similar to those required by the FCC.
The Original Equipment Manufacturer (OEM) must ensure that IC labeling requirements
are met. A clearly visible label on the outside of a non-removable part of the final product must include the following text:
STM 300U:
Contains IC: 23260-LSTM300U
Contient le module d'émission IC: 23260-LSTM300U
 The OEM must sign the OEM Limited Modular Approval Agreement with Magnum
Pour utiliser le numéro IC Magnum, le OEM doit s'assurer que les conditions suivantes sont
remplies:

Les exigences d'étiquetage pour Industrie Canada sont similaires à ceux exigés par la
FCC. Le fabricant d'équipement d'origine (OEM) doit s'assurer que les exigences en
matière d'étiquetage IC sont réunies. Une étiquette clairement visible à l'extérieur d'une
partie non amovible du produit final doit contenir le texte suivant:
LSTM 300U:
Contains IC: 23260-LSTM300U
Contient le module d'émission IC: 23260-LSTM300U
 L'OEM doit signer l'accord OEM limitée Approbation modulaire avec Magnum
© 2017 Magnum Energy Solutions | www.magnumes.com
LSTM300U User Manual | November 2017 | Page 40/41
USER MANUAL
LSTM 300U Scavenger Transceiver Module
5.4
ISED (former Industry Canada) Regulatory Statements
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
IMPORTANT! Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate this equipment.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout
brouillage radioélectrique subi, meme si le brouillage est susceptible d’en compromettre le
fonctionnement.
IMPORTANT! Tous les changements ou modifications pas expressément approuvés par la
partie responsable de la conformité ont pu vider l’autorité de l’utilisateur pour actioner cet
équipment.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada
© 2017 Magnum Energy Solutions | www.magnumes.com
LSTM300U User Manual | November 2017 | Page 41/41
Download: LSTM300U Wireless Transceiver User Manual Users Manual 1 Magnum Energy Solutions
Mirror Download [FCC.gov]LSTM300U Wireless Transceiver User Manual Users Manual 1 Magnum Energy Solutions
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