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... ... @@ -6,18 +6,12 @@
6 6  **RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
8 8  
9 -
10 -
11 11  **Table of Contents:**
12 12  
13 -{{toc/}}
14 14  
15 15  
16 16  
17 17  
18 -
19 -
20 -
21 21  = 1.Introduction =
22 22  
23 23  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
... ... @@ -24,33 +24,23 @@
24 24  
25 25  (((
26 26  (((
27 -(((
28 28  The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
29 29  )))
30 -)))
31 31  
32 32  (((
33 -(((
34 34  RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
35 35  )))
36 -)))
37 37  
38 38  (((
39 -(((
40 40  (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
41 41  )))
42 -)))
43 43  
44 44  (((
45 -(((
46 46  (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
47 -)))
48 48  
49 -(((
50 50  (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
51 51  )))
52 52  )))
53 -)))
54 54  
55 55  [[image:1653267211009-519.png||height="419" width="724"]]
56 56  
... ... @@ -90,7 +90,7 @@
90 90  * Preamble detection.
91 91  * 127 dB Dynamic Range RSSI.
92 92  * Automatic RF Sense and CAD with ultra-fast AFC.
93 -* Packet engine up to 256 bytes with CRC
77 +* Packet engine up to 256 bytes with CRC.
94 94  
95 95  == 1.3 Features ==
96 96  
... ... @@ -103,8 +103,6 @@
103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 -
107 -
108 108  == 1.4 Applications ==
109 109  
110 110  * Smart Buildings & Home Automation
... ... @@ -114,8 +114,6 @@
114 114  * Smart Cities
115 115  * Smart Factory
116 116  
117 -
118 -
119 119  == 1.5 Firmware Change log ==
120 120  
121 121  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -125,13 +125,9 @@
125 125  
126 126  (((
127 127  (((
128 -(((
129 129  v1.2: Add External Interrupt Pin.
130 -)))
131 131  
132 -(((
133 133  v1.0: Release
134 -)))
135 135  
136 136  
137 137  )))
... ... @@ -159,9 +159,7 @@
159 159  == 3.1 How it works? ==
160 160  
161 161  (((
162 -(((
163 163  The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
164 -)))
165 165  
166 166  
167 167  )))
... ... @@ -185,7 +185,7 @@
185 185  [[image:1653268227651-549.png||height="592" width="720"]]
186 186  
187 187  (((
188 -The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
162 +The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
189 189  )))
190 190  
191 191  (((
... ... @@ -237,7 +237,7 @@
237 237  
238 238  (((
239 239  (((
240 -There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
214 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
241 241  )))
242 242  
243 243  (((
... ... @@ -251,19 +251,19 @@
251 251  
252 252  To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
253 253  
254 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
255 -|=(% style="width: 110px;" %)(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
256 256  **AT Commands**
257 -)))|=(% style="width: 190px;" %)(((
231 +)))|(% style="width:305px" %)(((
258 258  **Description**
259 -)))|=(% style="width: 190px;" %)(((
233 +)))|(% style="width:346px" %)(((
260 260  **Example**
261 261  )))
262 -|(% style="width:110px" %)(((
236 +|(% style="width:128px" %)(((
263 263  AT+BAUDR
264 -)))|(% style="width:190px" %)(((
238 +)))|(% style="width:305px" %)(((
265 265  Set the baud rate (for RS485 connection). Default Value is: 9600.
266 -)))|(% style="width:190px" %)(((
240 +)))|(% style="width:346px" %)(((
267 267  (((
268 268  AT+BAUDR=9600
269 269  )))
... ... @@ -272,11 +272,11 @@
272 272  Options: (1200,2400,4800,14400,19200,115200)
273 273  )))
274 274  )))
275 -|(% style="width:110px" %)(((
249 +|(% style="width:128px" %)(((
276 276  AT+PARITY
277 -)))|(% style="width:190px" %)(((
251 +)))|(% style="width:305px" %)(((
278 278  Set UART parity (for RS485 connection)
279 -)))|(% style="width:190px" %)(((
253 +)))|(% style="width:346px" %)(((
280 280  (((
281 281  AT+PARITY=0
282 282  )))
... ... @@ -285,9 +285,9 @@
285 285  Option: 0: no parity, 1: odd parity, 2: even parity
286 286  )))
287 287  )))
288 -|(% style="width:110px" %)(((
262 +|(% style="width:128px" %)(((
289 289  AT+STOPBIT
290 -)))|(% style="width:190px" %)(((
264 +)))|(% style="width:305px" %)(((
291 291  (((
292 292  Set serial stopbit (for RS485 connection)
293 293  )))
... ... @@ -295,7 +295,7 @@
295 295  (((
296 296  
297 297  )))
298 -)))|(% style="width:190px" %)(((
272 +)))|(% style="width:346px" %)(((
299 299  (((
300 300  AT+STOPBIT=0 for 1bit
301 301  )))
... ... @@ -317,15 +317,15 @@
317 317  )))
318 318  )))
319 319  
320 -(% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
321 -|(% style="width:110px" %)**AT Commands**|(% style="width:190px" %)**Description**|(% style="width:190px" %)**Example**
322 -|AT+CFGDEV|(% style="width:110px" %)(((
294 +(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
295 +|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
296 +|AT+CFGDEV|(% style="width:418px" %)(((
323 323  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
324 324  
325 325  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
326 326  
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
328 -)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
302 +)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
330 330  === 3.3.3 Configure read commands for each sampling ===
331 331  
... ... @@ -372,8 +372,8 @@
372 372  
373 373  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
374 374  
375 -(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
376 -|(% style="width:510px" %)(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
377 377  **AT+DATACUTx=a,b,c**
378 378  
379 379  * **a: length for the return of AT+COMMAND**
... ... @@ -442,7 +442,6 @@
442 442  
443 443  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
444 444  
445 -
446 446  1. PAYVER: Defined by AT+PAYVER
447 447  1. PAYLOAD COUNT: Total how many uplinks of this sampling.
448 448  1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
... ... @@ -522,7 +522,7 @@
522 522  
523 523  There are two kinds of Commands:
524 524  
525 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
498 +* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
526 526  
527 527  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
528 528  
... ... @@ -542,8 +542,8 @@
542 542  
543 543  === 3.5.3 Sensor related commands ===
544 544  
518 +==== ====
545 545  
546 -
547 547  ==== **RS485 Debug Command** ====
548 548  
549 549  This command is used to configure the RS485 devices; they won’t be used during sampling.
... ... @@ -750,7 +750,7 @@
750 750  
751 751  * **AT Command:**
752 752  
753 -No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
726 +No AT Command for this, user can press the [[ACT button>>path:#Button]] for 1 second for the same.
754 754  
755 755  
756 756  * **Downlink Payload:**
... ... @@ -758,6 +758,7 @@
758 758  **0x08 FF**, RS485-LN will immediately send an uplink.
759 759  
760 760  
734 +==== ====
761 761  
762 762  ==== **Clear RS485 Command** ====
763 763  
... ... @@ -774,7 +774,7 @@
774 774  
775 775  The uplink screen shot is:
776 776  
777 -[[image:1654160691922-496.png]]
751 +[[image:1654160691922-496.png]][[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
778 778  
779 779  
780 780  * **Downlink Payload:**
... ... @@ -863,279 +863,7 @@
863 863  [[image:image-20220602171200-9.png]]
864 864  
865 865  
866 -(% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
840 +Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
867 867  
868 868  
869 -== 3.7 Buttons ==
870 -
871 -
872 -(% border="1" style="background-color:#f7faff; width:500px" %)
873 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
874 -|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
875 -|**RST**|(% style="width:1420px" %)Reboot RS485
876 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
877 -
878 -
879 -== 3.8 LEDs ==
880 -
881 -(% border="1" style="background-color:#f7faff; width:500px" %)
882 -|=**LEDs**|=**Feature**
883 -|**PWR**|Always on if there is power
884 -|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
885 -
886 -
887 -= 4. Case Study =
888 -
889 -User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
890 -
891 -
892 -= 5. Use AT Command =
893 -
894 -== 5.1 Access AT Command ==
895 -
896 -RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
897 -
898 -[[image:1654162355560-817.png]]
899 -
900 -
901 -In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
902 -
903 -[[image:1654162368066-342.png]]
904 -
905 -
906 -More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
907 -
908 -
909 -== 5.2 Common AT Command Sequence ==
910 -
911 -=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
912 -
913 -If device has not joined network yet:
914 -
915 -(% class="box infomessage" %)
916 -(((
917 -**AT+FDR**
918 -)))
919 -
920 -(% class="box infomessage" %)
921 -(((
922 -**AT+NJM=0**
923 -)))
924 -
925 -(% class="box infomessage" %)
926 -(((
927 -**ATZ**
928 -)))
929 -
930 -
931 -If device already joined network:
932 -
933 -(% class="box infomessage" %)
934 -(((
935 -**AT+NJM=0**
936 -)))
937 -
938 -(% class="box infomessage" %)
939 -(((
940 -**ATZ**
941 -)))
942 -
943 -
944 -=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
945 -
946 -
947 -(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
948 -
949 -(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
950 -
951 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
952 -
953 -(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
954 -
955 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
956 -
957 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
958 -
959 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
960 -
961 -(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
962 -
963 -(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
964 -
965 -(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
966 -
967 -
968 -(% style="color:red" %)**Note:**
969 -
970 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
971 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
972 -3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
973 -4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
974 -
975 -[[image:1654162478620-421.png]]
976 -
977 -
978 -= 6. FAQ =
979 -
980 -== 6.1 How to upgrade the image? ==
981 -
982 -The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
983 -
984 -* Support new features
985 -* For bug fix
986 -* Change LoRaWAN bands.
987 -
988 -Below shows the hardware connection for how to upload an image to RS485-LN:
989 -
990 -[[image:1654162535040-878.png]]
991 -
992 -**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
993 -
994 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
995 -
996 -**Step3: **Open flashloader; choose the correct COM port to update.
997 -
998 -(((
999 -(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1000 -)))
1001 -
1002 -
1003 -[[image:image-20220602175818-12.png]]
1004 -
1005 -
1006 -[[image:image-20220602175848-13.png]]
1007 -
1008 -
1009 -[[image:image-20220602175912-14.png]]
1010 -
1011 -
1012 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1013 -
1014 -[[image:image-20220602175638-10.png]]
1015 -
1016 -
1017 -== 6.2 How to change the LoRa Frequency Bands/Region? ==
1018 -
1019 -User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1020 -
1021 -
1022 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1023 -
1024 -The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1025 -
1026 -
1027 -== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1028 -
1029 -When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1030 -
1031 -Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1032 -
1033 -
1034 -= 7. Trouble Shooting =
1035 -
1036 -== 7.1 Downlink doesn’t work, how to solve it? ==
1037 -
1038 -Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1039 -
1040 -
1041 -== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1042 -
1043 -It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1044 -
1045 -
1046 -= 8. Order Info =
1047 -
1048 -(% style="color:blue" %)**Part Number: RS485-LN-XXX**
1049 -
1050 -(% style="color:blue" %)**XXX:**
1051 -
1052 -* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1053 -* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1054 -* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1055 -* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1056 -* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1057 -* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1058 -* (% style="color:blue" %)**US915**(%%): frequency bands US915
1059 -* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1060 -* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1061 -* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1062 -
1063 -
1064 -
1065 -= 9.Packing Info =
1066 -
1067 -
1068 -**Package Includes**:
1069 -
1070 -* RS485-LN x 1
1071 -* Stick Antenna for LoRa RF part x 1
1072 -* Program cable x 1
1073 -
1074 -**Dimension and weight**:
1075 -
1076 -* Device Size: 13.5 x 7 x 3 cm
1077 -* Device Weight: 105g
1078 -* Package Size / pcs : 14.5 x 8 x 5 cm
1079 -* Weight / pcs : 170g
1080 -
1081 -
1082 -
1083 -= 10. FCC Caution for RS485LN-US915 =
1084 -
1085 -(((
1086 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1087 -)))
1088 -
1089 -(((
1090 -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.
1091 -)))
1092 -
1093 -(((
1094 -
1095 -)))
1096 -
1097 -(((
1098 -**IMPORTANT NOTE:**
1099 -)))
1100 -
1101 -(((
1102 -**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:
1103 -)))
1104 -
1105 -(((
1106 -—Reorient or relocate the receiving antenna.
1107 -)))
1108 -
1109 -(((
1110 -—Increase the separation between the equipment and receiver.
1111 -)))
1112 -
1113 -(((
1114 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1115 -)))
1116 -
1117 -(((
1118 -—Consult the dealer or an experienced radio/TV technician for help.
1119 -)))
1120 -
1121 -(((
1122 -
1123 -)))
1124 -
1125 -(((
1126 -**FCC Radiation Exposure Statement:**
1127 -)))
1128 -
1129 -(((
1130 -This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1131 -)))
1132 -
1133 -
1134 -= 11. Support =
1135 -
1136 -* (((
1137 -Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1138 -)))
1139 -* (((
1140 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1141 -)))
843 +==== ====
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