CIRCUIT DESIGN SLR-434M Operation Manual Download Page 14

OPERATION GUIDE

OG_SLR-434M_v10e

Circuit Design, Inc.

14

Important notice

Customers are advised to consult with Circuit Design sales representatives before ordering.

Circuit Design believes the provided information is accurate and reliable. However, Circuit Design
reserves the right to make changes to this product without notice.

Circuit Design products are neither designed nor intended for use in life support applications where

malfunction can reasonably be expected to result in significant personal injury to the user. Any use
of Circuit Design products in such safety-critical applications is understood to be fully at the risk of
the customer and the customer must fully indemnify Circuit Design, Inc for any damages resulting
from any improper use.

As the radio module communicates using electronic radio waves, there are cases where

transmission will be temporarily cut off due to the surrounding environment and method of usage.
The manufacturer is exempt from all responsibility relating to resulting harm to personnel or
equipment and other secondary damage.

The manufacturer is exempt from all responsibility relating to secondary damage resulting from the
operation, performance and reliability of equipment connected to the radio module.

Copyright

All rights in this operation guide are owned by Circuit Design, Inc. No part of this document may be

copied or distributed in part or in whole without the prior written consent of Circuit Design, Inc.

Cautions

Do not use the equipment within the vicinity of devices that may malfunction as a result of electronic
radio waves from the radio module.

Communication performance will be affected by the surrounding environment, so communication
tests should be carried out before actual use.

Ensure that the power supply for the radio module is within the specified rating. Short circuits and
reverse connections may result in overheating and damage and must be avoided at all costs.

Ensure that the power supply has been switched off before attempting any wiring work.

The case is connected to the GND terminal of the internal circuit, so do not make contact between
the '+' side of the power supply terminal and the case.

When batteries are used as the power source, avoid short circuits, recharging, dismantling, and
pressure. Failure to observe this caution may result in the outbreak of fire, overheating and damage
to the equipment. Remove the batteries when the equipment is not to be used for a long period of
time. Failure to observe this caution may result in battery leaks and damage to the equipment.

Do not use this equipment in vehicles with the windows closed, in locations where it is subject to
direct sunlight, or in locations with extremely high humidity.

The radio module is neither waterproof nor splash proof. Ensure that it is not splashed with soot or
water. Do not use the equipment if water or other foreign matter has entered the case.

Do not drop the radio module or otherwise subject it to strong shocks.

Do not subject the equipment to condensation (including moving it from cold locations to locations
with a significant increase in temperature.)

Do not use the equipment in locations where it is likely to be affected by acid, alkalis, organic agents
or corrosive gas.

Do not bend or break the antenna. Metallic objects placed in the vicinity of the antenna will have a
great effect on communication performance. As far as possible, ensure that the equipment is placed
well away from metallic objects.

The GND for the radio module will also affect communication performance. If possible, ensure that
the case GND and the circuit GND are connected to a large GND pattern.

Warnings

Do not take apart or modify the equipment.

Do not remove the product label (the label attached to the upper surface of the module.) Using a
module from which the label has been removed is prohibited.

Copyright 2018, Circuit Design, Inc.

Summary of Contents for SLR-434M

Page 1: ...sign Inc Embedded low power radio modem SLR 434M Smart RF modem Operation Guide Version 1 0 Jan 2018 Circuit Design Inc 7557 1 Hotaka Azumino Nagano Japan Tel 0263 82 1024 Fax 0263 82 1016 e mail info...

Page 2: ...nts 1 OVERVIEW 3 2 FEATURES AND APPLICATIONS 3 3 SPECIFICATIONS 4 4 PART NAMES AND FUNCTIONS 5 5 CONNECTION EXAMPLES FOR DIO TERMINALS 8 6 APPEARANCE 9 7 COMMUNICATION FREQUENCY TABLE 10 8 UART PORT C...

Page 3: ...to 8 contacts 2 Features and applications Features RED compliant Plan Ultra long distance communication using the LoRa mode Enhanced resistant to city noise and longer range compared with our earlier...

Page 4: ...orage temperature range 30 to 80 C Recommended operating voltage range 3 5 to 5 0 V Warranted operating voltage range 3 3 to 5 5 V Operating current Tx 29 mA Typ Rx 17 mA Typ Supply power 5 V Antenna...

Page 5: ...bps Bits 8 Parity none Stop 1 Serial data Transmitter RXD I Serial data Receiver RTS O The UART control terminal When RTS Hi do not input data Hardware flow control output terminal CTS I The UART cont...

Page 6: ...LORA CMD MODE or FSK CMD MODE is output from the TXD terminal after the device restarts After reset and restart the device is initialized to the setting value saved by adding W to commands such as ch...

Page 7: ...he transmission monitor LED connection terminal Lo Active When a radio wave communication signal is sent this terminal changes to Lo GND The ground terminal VCC The power supply terminal Connect to a...

Page 8: ...nal level inverted via a transistor Using long wiring between the DIO terminal and the switch may cause malfunction due to noise In that case take measures such as externally pulling down with a resis...

Page 9: ...6 Appearance Note When designing circuit boards take care to ensure space for the SMA connector dimensions and screw fixture for connecting the antenna If the underside of the connector is also the su...

Page 10: ...4F 434 0625 12 0C 433 2250 46 2E 433 6500 80 50 434 0750 13 0D 433 2375 47 2F 433 6625 81 51 434 0875 14 0E 433 2500 48 30 433 6750 82 52 434 1000 15 0F 433 2625 49 31 433 6875 83 53 434 1125 16 10 43...

Page 11: ...34 000 MHz for shipment If you intend to use several SLR 434M units in the same area use a channel plan that takes into account radio interference due to third order intermodulation Circuit Design pro...

Page 12: ...D setting Equipment Target station Group ID EI DI GI 0A With Equipment ID EI 0A Sets the Equipment ID local station to 0A Sets the ID for identifying each radio station and the other party in communic...

Page 13: ...fter command value data optional add the line feed code CR LF If you omit value data you can check the content of the current settings If the optional W is added the setting value is saved and it beco...

Page 14: ...cuits and reverse connections may result in overheating and damage and must be avoided at all costs Ensure that the power supply has been switched off before attempting any wiring work The case is con...

Page 15: ...vision History Version Date Description Remark 0 91 Feb 2017 Provisional Edition 1 0 Jan 2018 The copyright of this manual belongs to Circuit Design Inc Reproduction duplication or modification of par...

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