Version 75.1 by Kilight Cao on 2022/08/04 16:47

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Xiaoling 69.2 1 (% style="text-align:center" %)
Edwin Chen 43.1 2 [[image:image-20220620202334-2.png||height="467" width="809"]]
Xiaoye 4.1 3
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Xiaoling 69.2 6
Xiaoye 4.1 7
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Xiaoye 5.1 10
11 **Table of Contents:**
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13 {{toc/}}
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Xiaoling 69.2 15
Kilight Cao 11.1 16 = **1. Introduction** =
Xiaoye 5.1 17
Kilight Cao 12.1 18 == **1.1 What is LPS8v2** ==
Xiaoye 5.1 19
Xiaoling 69.2 20
Xiaoye 5.1 21 (((
Xiaoling 69.7 22 (((
Edwin Chen 44.1 23 The LPS8v2 is an (% style="color:green" %)**open-source LoRaWAN Gateway**(%%). It lets you bridge LoRa wireless network to an IP network via (% style="color:green" %)**WiFi , Ethernet or Cellular Network**(%%) (via Optional 4G module). The LoRa wireless allows users to send data and reach extremely long ranges at low data rates.
Xiaoling 69.7 24 )))
Xiaoye 6.2 25
Xiaoling 69.7 26 (((
Edwin Chen 44.1 27 The LPS8v2 is fully compatible with LoRaWAN protocol. It supports different kinds of LoRaWAN Network Connections such as: (% style="color:green" %)**Semtech UDP Packet Forwarder, LoRaWAN Basic Station, ChirpStack MQTT Bridge**(%%), and so on. This makes LPS8V2 work with most LoRaWAN platforms in the market.
Xiaoling 69.7 28 )))
Xiaoye 6.2 29
Xiaoling 69.7 30 (((
Edwin Chen 44.1 31 LPS8v2 also includes a (% style="color:green" %)**built-in LoRaWAN Server and IoT server**(%%), which provide the possibility for the system integrator to deploy the IoT service without cloud service or 3rd servers.
Xiaoling 69.7 32 )))
Xiaoye 6.2 33
Xiaoling 69.7 34 (((
Edwin Chen 43.1 35 Different countries use different LoRaWAN frequency bands. LPS8v2 has these bands pre-configured. Users can also customize the frequency bands to use in their own LoRa network.
Xiaoling 69.7 36 )))
Xiaoye 6.2 37
Xiaoling 69.7 38 (((
Edwin Chen 44.1 39 LPS8v2 supports (% style="color:green" %)**remote management**(%%). System Integrator can easy to remote monitor the gateway and maintain it.
Xiaoling 69.7 40 )))
Edwin Chen 43.1 41
42
Xiaoling 69.2 43
Kilight Cao 11.1 44 == **1.2 Specifications** ==
Xiaoye 6.2 45
46
Xiaoling 69.2 47 (% style="color:#037691" %)**Hardware System:**
48
Edwin Chen 46.1 49 * CPU: Quad-core Cortex-A7 1.2Ghz
Xiaoye 6.2 50 * RAM: 512MB
51 * eMMC: 4GB
52
Xiaoling 69.2 53 (% style="color:#037691" %)**Interface:**
Xiaoye 6.2 54
55 * 10M/100M RJ45 Ports x 1
Edwin Chen 45.1 56 * Multi-Channel LoRaWAN Wireless
Edwin Chen 43.1 57 * WiFi 802.11 b/g/n
Xiaoye 6.2 58
Xiaoling 69.2 59 (% style="color:#037691" %)**Operating Condition:**
Xiaoye 6.2 60
61 * Work Temperature: -20 ~~ 65°C
62 * Storage Temperature: -20 ~~ 65°C
Edwin Chen 45.1 63 * Power Input: 5V, 2A, DC
Xiaoye 6.2 64
Kilight Cao 11.1 65 == **1.3 Features** ==
Xiaoye 6.2 66
Xiaoling 69.2 67
Xiaoye 6.2 68 * Open Source Debian system
69 * Managed by Web GUI, SSH via WAN or WiFi
Edwin Chen 45.1 70 * Remote Management
Edwin Chen 49.1 71 * Auto-provisioning for batch deployment and management
Xiaoye 6.2 72 * LoRaWAN Gateway
73 * 10 programmable parallel demodulation paths
Xiaoye 26.1 74 * Pre-configured to support different LoRaWAN regional settings.
Kilight Cao 11.1 75 * Allow customizing LoRaWAN regional parameters.
Edwin Chen 45.1 76 * Different kinds of LoRaWAN Connections such as
77 ** Semtech UDP Packet Forwarder
78 ** LoRaWAN Basic Station
79 ** ChirpStack-Gateway-Bridge (MQTT)
Xiaoling 69.2 80 * Built-in (% style="color:#037691" %)//**The Things Network**//(%%) local LoRaWAN server
81 * Built-in  (% style="color:#037691" %)//**Node-Red**// (%%)local Application server
Xiaoye 6.2 82
Kilight Cao 11.1 83 == **1.4 Block Diagram** ==
Xiaoye 6.2 84
85
Xiaoling 69.3 86
Xiaoye 35.1 87 == **1.5 LED Indicators** ==
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Xiaoling 69.3 89
Xiaoye 35.1 90 LPS8-V2 has totally four LEDs, They are:
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Xiaoling 69.3 93 (% style="color:blue" %)//**➢ Power LED**//(%%)//: This RED LED will be solid if the device is properly powered//
Xiaoye 35.1 94
Xiaoling 69.3 95 (% style="color:blue" %)//**➢ LoRa LED**//(%%)//: This RGB LED will blink GREEN when the LoRaWAN module starts or transmit a packet//
Xiaoye 35.1 96
Xiaoling 69.3 97 (% style="color:blue" %)//**➢ SYS LED**//(%%)//: This RGB LED will show different colors in different states~://
Xiaoye 35.1 98
Xiaoling 69.3 99 // ✓ **SOLID BLUE:** The device is alive with a LoRaWAN server connection.//
Xiaoye 35.1 100
Xiaoling 69.3 101 // ✓ **BLINKING BLUE:** a) Device has internet connection but no LoRaWAN Connection. or b) Device is in booting stage, in this stage, it will BLINKING BLUE for several seconds and then with SOLID RED and BLINKING BLUE together//
Xiaoye 35.1 102
Xiaoling 69.4 103 // ✓** SOLID RED:** Device doesn't have an Internet connection.//
Xiaoye 35.1 104
Xiaoling 69.3 105 (% style="color:blue" %)//**➢ ETH LED**//(%%)//: This LED shows the ETH interface connection status.//
Xiaoye 35.1 106
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Xiaoling 69.3 108
Xiaoye 26.1 109 = **2. Quick Start** =
Xiaoye 8.1 110
Xiaoling 69.4 111
Xiaoye 26.1 112 The LPS8-V2 supports network access via Ethernet or Wi-Fi connection and runs without a network.
Xiaoye 8.1 113
Xiaoye 26.1 114 In most cases, the first thing you need to do is make the lps8-v2 accessible to the network.
Xiaoye 8.1 115
116
Xiaoling 69.4 117
Xiaoye 35.1 118 == **2.1 Connects to the network and accesses the gateway Web UI** ==
Xiaoye 8.1 119
120
Xiaoye 35.1 121 == **2.1.1 connect the network.** ==
Xiaoye 8.1 122
123
Xiaoling 69.4 124 === (% style="color:blue" %)**Method 1**(%%):  Connect via Ethernet with DHCP IP from the router ===
Xiaoye 26.1 125
Xiaoling 69.4 126
Xiaoling 69.10 127 (((
Xiaoye 35.1 128 Connect the LPS8-V2 Ethernet port to your router and LPS8 can obtain an IP address from your router. In the router's management portal, you should be able to find what IP address the router has assigned to the LPS8-V2.
Xiaoling 69.10 129 )))
Xiaoye 26.1 130
Xiaoling 69.10 131 (((
Xiaoye 35.1 132 You can also use this IP to connect.
Xiaoling 69.10 133 )))
Xiaoye 35.1 134
135 [[image:image-20220622100129-1.png||height="332" width="1263"]]
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Xiaoling 69.4 139 === (% style="color:blue" %)**Method 2**(%%):  Connect via WiFi with DHCP IP from the router ===
Xiaoye 35.1 140
Xiaoling 69.4 141
Xiaoye 35.1 142 [[image:image-20220622100542-2.png||height="369" width="1256"]]
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Xiaoling 69.11 145 (((
Xiaoye 35.1 146 The LPS8-V2 has a fall-back IP address on its WAN port. you have to access the gateway Web-UI to configure the WiFi connection via the fallback IP address.
Xiaoling 69.11 147 )))
Xiaoye 35.1 148
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Xiaoling 69.4 151 (% style="color:#037691" %)**Steps to connect via fallback IP:**
Xiaoye 35.1 152
Xiaoling 69.11 153 ~1. Connect PC's Ethernet port to LPS8-V2's WAN port
Xiaoling 69.4 154
Xiaoye 35.1 155 2. Configure PC's Ethernet port has  IP: 172.31.255.253 and Netmask: 255.255.255.252
156
157 [[image:image-20220622101433-4.png]]
158
159
160 and then On the PC, use the IP address **http:~/~/172.31.255.254** to access the LPS8-V2 via Web or Console.
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163 [[image:image-20220622102210-5.png||height="569" width="1039"]]
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Xiaoling 69.4 166 Fill in the WiFi information by checking the box and clicking (% style="color:red" %)**Save&Apply**
Xiaoye 35.1 167
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169 [[image:image-20220622102702-6.png]]
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Xiaoling 69.4 172
Xiaoye 35.1 173 **Wi-Fi configuration successful**
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176 [[image:image-20220622102847-7.png]]
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Xiaoling 69.4 178
Xiaoye 35.1 179 [[image:image-20220622102901-8.png||height="513" width="1011"]]
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Xiaoye 26.1 183 == **2.2 The LPS8-V2 is registered and connected to The Things Network** ==
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185
Xiaoye 41.1 186 === **2.2.1 Select your area frequency** ===
Xiaoye 26.1 187
Xiaoling 69.4 188
Xiaoling 69.12 189 (((
Xiaoye 41.1 190 First, you need to set the frequency plan in LPS8-V2 to match the end node we use, so to receive the LoRaWAN packets from the LoRaWAN sensor.
Xiaoling 69.12 191 )))
Xiaoye 26.1 192
Xiaoye 41.1 193 [[image:image-20220622103332-9.png]]
Xiaoye 26.1 194
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Xiaoling 69.4 196
Xiaoye 41.1 197 === **2.2.2 Get the only gateway EUI** ===
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Xiaoling 69.4 199
Xiaoye 41.1 200 Every LPS8-V2 has a unique gateway id. The ID can be found on LoRaWAN Semtech page:
201
202 [[image:image-20220622103355-10.png]]
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Xiaoling 69.4 205 (% style="color:red" %)**Note: Choose the cluster that corresponds to a specific Gateway server address**
Xiaoye 41.1 206
Xiaoling 69.4 207
Xiaoye 41.1 208 **➢ Europe 1:**  corresponding Gateway server address:  **eu1.cloud.thethings.network**
209
210 **➢ North America 1:**  corresponding Gateway server address:  **nam1.cloud.thethings.network**
211
212 **➢ Australia 1: ** corresponding Gateway server address:  **au1.cloud.thethings.network**
213
214 **➢ Legacy V2 Console:** TTN v2 shuts down in December 2021
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216
217 [[image:image-20220622103956-12.png]]
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219
220
221 == 2.2.3 Register the gateway to The Things Network ==
222
Xiaoling 69.4 223
Xiaoye 41.1 224 **Login to The Things Network**
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226 [[https:~~/~~/console.cloud.thethings.network/>>https://console.cloud.thethings.network/]]
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Xiaoling 69.4 228
Xiaoye 41.1 229 **Add the gateway**
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231 [[image:image-20220622104252-13.png||height="511" width="953"]]
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234 **Get it online**
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Xiaoling 69.4 237
Kilight Cao 15.1 238 = **3. Web Configure Pages** =
Xiaoye 8.1 239
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Kilight Cao 15.1 241 == **3.1 Home** ==
Kilight Cao 11.1 242
Xiaoling 69.4 243
Kilight Cao 23.1 244 //Shows the system running status~://
Kilight Cao 15.1 245
Xiaoling 69.4 246
Kilight Cao 15.1 247 == **3.2 LoRa Settings** ==
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Kilight Cao 23.1 250 === **3.2.1 LoRa ~-~-> LoRa** ===
Kilight Cao 15.1 251
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Kilight Cao 23.1 253 //This page shows the LoRa Radio Settings. There is a set of default frequency bands according to LoRaWAN protocol, and users can customize the band* as well.//
Kilight Cao 15.1 254
Kilight Cao 23.1 255 //Different LPS8v2 hardware versions can support different frequency ranges~://
Kilight Cao 15.1 256
Kilight Cao 23.1 257 * (% style="color:#0000ff" %)//**868**//(% style="color:black" %)//: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.//
258 * (% style="color:#0000ff" %)//**915**//(% style="color:black" %)//: valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920//
Xiaoye 8.1 259
Kilight Cao 23.1 260 (% class="wikigeneratedid" %)
Xiaoling 69.4 261 //After the user choose the frequency plan,  the user can see the actual frequency is used by checking the page (% style="color:#037691" %)**LogRead ~-~-> LoRa Log**//
Kilight Cao 23.1 262
263 (% class="wikigeneratedid" %)
264 [[image:image-20220616110739-1.png||height="372" width="682"]]
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Xiaoling 69.4 267 (((
Xiaoling 69.5 268 (% style="color:red" %)//**Note *: See this instruction for how to customize the frequency band: **//(%%)**//__[[How to customized LoRaWAN frequency band - DRAGINO>>url:http://8.211.40.43/xwiki/bin/view/Main/How%20to%20customized%20LoRaWAN%20frequency%20band/]]__//**
Xiaoling 69.4 269 )))
Kilight Cao 23.1 270
271
272
273 == **3.3 LoRaWAN Settings** ==
274
275
276 === **3.3.1 LoRaWAN ~-~-> LoRaWAN Semtech UDP** ===
277
278
279 //This page is for the connection set up to a general LoRaWAN Network server such as [[TTN>>url:http://www.thethingsnetwork.org/]], [[ChirpStack>>url:https://www.chirpstack.io/]], etc.//
280
281 [[image:image-20220616111932-2.png||height="516" width="672"]]
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Xiaoling 69.5 284
Kilight Cao 23.1 285 === **3.3.2 LoRaWAN ~-~-> LoRaWAN Basic Station** ===
286
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288 //This page is for the connection set up to the TTN Basic Station, AWS-IoT, etc.//
289
290 [[image:image-20220616113246-3.png||height="396" width="672"]]
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Xiaoling 69.12 293 (((
Kilight Cao 23.1 294 Please see this instruction to know more detail and a demo for how to use of LoRaWAN Basic Station: __[[Use of LoRaWAN Basic Station - DRAGINO>>url:http://8.211.40.43/xwiki/bin/view/Main/Use%20of%20LoRaWAN%20Basic%20Station/]]__
Xiaoling 69.12 295 )))
Kilight Cao 23.1 296
297
Xiaoling 69.5 298
Kilight Cao 23.1 299 == **3.4 Network Settings** ==
300
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302 === **3.4.1 Network ~-~-> WiFi** ===
303
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305 [[image:image-20220616114756-4.png||height="251" width="669"]]
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Xiaoling 69.5 308
Kilight Cao 23.1 309 === **3.4.2 Network ~-~-> System Status** ===
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312 [[image:image-20220616115229-5.png||height="548" width="665"]]
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Xiaoling 69.5 315
Kilight Cao 23.1 316 === **3.4.3 Network ~-~-> Firewall** ===
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319 [[image:image-20220616115351-6.png||height="244" width="661"]]
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Xiaoling 69.5 322
Kilight Cao 23.1 323 == **3.5 System** ==
324
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326 === **3.5.1  System ~-~-> System Overview** ===
327
328
329 Shows the system info:
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Xiaoling 69.5 332
Kilight Cao 23.1 333 === **3.5.2 System ~-~-> Backup/Restore** ===
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336 [[image:image-20220616115808-7.png||height="194" width="649"]]
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Xiaoye 60.1 340 = **4. Build-in LoRaWAN Network  Server ~-~- The Things Network - Stack (TTN-V3)** =
Xiaoye 53.1 341
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Xiaoling 69.5 343 The default factory version of LPS8-V2 is installed with the Built-in LoRaWAN Server: (% style="color:blue" %)**The Things Network - Stack (Open Source 3.19 Version).**
Xiaoye 53.1 344
Xiaoling 69.5 345 You can access the gateway's built-in LNS server of **The Things Network - Stack **via the URL( (% style="background-color:yellow" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> //**__(%%)) in your browser.
Xiaoye 53.1 346
Kilight Cao 58.1 347
Xiaoling 69.5 348 Such as  (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>//**__
Kilight Cao 58.1 349
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Xiaoye 60.1 351 Login account:
Kilight Cao 59.1 352
Xiaoling 69.5 353 **User ID: ** ** (% style="background-color:yellow" %)admin(%%)**
Xiaoye 60.1 354
Xiaoling 69.5 355 **Password: ** ** (% style="background-color:yellow" %)dragino(%%)**
Xiaoye 60.1 356
357
Kilight Cao 57.1 358 [[image:image-20220725171719-1.png||height="570" width="769"]]
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Xiaoling 69.12 361 (((
Xiaoye 70.1 362 (% style="color:red" %)**Note:  A portion of the sample devices that were not installed with the TTN-Stack
Xiaoling 69.5 363 You can complete the installation manually with the following command.**
Xiaoling 69.12 364 )))
Kilight Cao 58.1 365
Xiaoling 69.5 366
Xiaoye 67.1 367 (% class="box infomessage" %)
368 (((
Xiaoling 69.12 369 (((
Xiaoling 69.14 370 (% style="background-color:#fcf8e3" %)cd /tmp && wget [[http:~~/~~/repo.dragino.com/release/tool/ttnstack/autoinstall_ttn-stack.sh>>http://repo.dragino.com/release/tool/ttnstack/autoinstall_ttn-stack.sh]]
Xiaoling 69.13 371 chmod +x /tmp/autoinstall_ttn-stack.sh && /tmp/autoinstall_ttn-stack.sh ttn-stack
Xiaoling 69.12 372 )))
Xiaoye 67.1 373 )))
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Xiaoling 69.5 376
Xiaoye 60.1 377 = **5. Build-in Application Server ~-~- Node-Red** =
Xiaoye 53.1 378
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Xiaoling 69.6 380 The default factory version of LPS8-V2 is installed with the built-in Applicant server: (% style="color:blue" %)**Node-Red.**
Kilight Cao 59.1 381
Xiaoling 69.6 382 You can access the gateway's built-in AS server of **Node-Red **via the URL((% style="background-color:yellow" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address>//**__(%%)) in your browser.
Kilight Cao 59.1 383
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Xiaoling 69.6 385 Such as (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080  or [[http:~~/~~/<Local-IPV4-Address~>>>http://<Local-IPV4-Address>]]//**__
Xiaoye 60.1 386
Xiaoling 69.6 387
Kilight Cao 57.1 388 [[image:image-20220725172124-3.png||height="610" width="843"]]
Xiaoye 53.1 389
390
Xiaoling 69.12 391 (((
Xiaoling 69.6 392 (% style="color:red" %)**Note:  A portion of the sample devices that were not installed with Node-Red.
393 You can complete the installation manually with the following command.**
Xiaoling 69.12 394 )))
Xiaoye 53.1 395
Xiaoye 61.1 396
397
Xiaoye 64.1 398 (% class="box infomessage" %)
399 (((
Xiaoling 69.12 400 (((
Xiaoling 69.13 401 (% style="background-color:#fcf8e3" %)cd /tmp && wget  http:~/~/repo.dragino.com/release/tool/nodered/autoinstall_nodered.sh
Xiaoye 67.1 402 chmod +x /tmp/autoinstall_nodered.sh && /tmp/autoinstall_nodered.sh node-red
Xiaoye 64.1 403 )))
Xiaoling 69.12 404 )))
Xiaoye 61.1 405
Xiaoye 69.1 406 [[image:image-20220728102000-1.png]]
Xiaoye 61.1 407
408
Kilight Cao 74.1 409 = **6. How users can access LPS8v2 using serial USB** =
Xiaoling 69.6 410
Kilight Cao 74.1 411
412 **USB TTL to LPS8v2  Connection**
413
414 Port 1 of the UART on the LPS8v2 is GND
415
416 TXD  <~-~--> UART RXD (Gray line)
417
418 RXD  <~-~--> UART TXD (White line)
419
420 GND <~-~--> GND (Black line)
421
422 [[image:image-20220804163015-1.png||height="696" width="522"]]
423
Kilight Cao 23.1 424 (% style="color:inherit; font-family:inherit; font-size:29px" %)**10. Supports**
425
Xiaoling 69.6 426
Kilight Cao 14.1 427 (((
428 **//If you are experiencing issues and can't solve them, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].//**
429 )))
Xiaoye 8.1 430
Kilight Cao 14.1 431 (((
432 **//With your question as detailed as possible. We will reply and help you in the shortest.//**
Kilight Cao 15.1 433
Edwin Chen 50.1 434
Xiaoling 69.6 435
Edwin Chen 50.1 436 = **11 Reference** =
437
Xiaoling 69.6 438
Edwin Chen 52.1 439 * Install Tago Core: Refer **Install Tago Core in LPS8v2** in[[ Instruction>>doc:Main.Tago\.IO.WebHome]].
Edwin Chen 50.1 440
Kilight Cao 15.1 441
Kilight Cao 14.1 442 )))
Xiaoye 8.1 443
Edwin Chen 50.1 444 = **12. Order Info** =
Xiaoye 8.1 445
Xiaoling 69.6 446
Edwin Chen 42.1 447 (% style="color:#0000ff" %)**LPS8v2-XXX-YYY**
Xiaoye 8.1 448
Kilight Cao 14.1 449 (% style="color:#0000ff" %)**XXX**(% style="color:black" %): Frequency Band
Xiaoye 8.1 450
Xiaoling 69.6 451 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
452 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
453 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
454 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
455 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
456 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
Xiaoye 8.1 457
Edwin Chen 42.1 458 (% style="color:#0000ff" %)**YYY**(% style="color:black" %): 4G Cellular Option
459
Xiaoling 69.6 460 * (% style="color:red" %)**E**(%%):  EMEA, Korea, Thailand, India.
461 * (% style="color:red" %)**A**(%%):  North America/ Rogers/AT&T/T-Mobile.
462 * (% style="color:red" %)**AU**(%%): Latin America, New Zeland, Taiwan
463 * (% style="color:red" %)**J**(%%):  Japan, DOCOMO/SoftBank/ KDDI
Edwin Chen 42.1 464
465 More info about valid bands, please see [[EC25-E product page>>url:https://www.quectel.com/product/ec25.htm]].
466
467
Xiaoling 69.6 468
Edwin Chen 50.1 469 = **13. Manufacturer Info** =
Xiaoye 8.1 470
Xiaoling 69.6 471
Xiaoye 8.1 472 **Shenzhen Dragino Technology Development co. LTD**
473
474 Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad
475
476 LongCheng Street, LongGang District ; Shenzhen 518116,China
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478
Xiaoling 69.6 479
Edwin Chen 50.1 480 = **14. FCC Warning** =
Xiaoye 8.1 481
Xiaoling 69.6 482
Xiaoling 69.12 483 (((
Xiaoye 8.1 484 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:
Xiaoling 69.12 485 )))
Xiaoye 8.1 486
Xiaoling 69.12 487 (((
Xiaoye 8.1 488 ~-~- Reorient or relocate the receiving antenna.
Xiaoling 69.12 489 )))
Xiaoye 8.1 490
Xiaoling 69.12 491 (((
Xiaoye 8.1 492 ~-~- Increase the separation between the equipment and receiver.
Xiaoling 69.12 493 )))
Xiaoye 8.1 494
Xiaoling 69.12 495 (((
Xiaoye 8.1 496 ~-~- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Xiaoling 69.12 497 )))
Xiaoye 8.1 498
Xiaoling 69.12 499 (((
Xiaoye 8.1 500 ~-~- Consult the dealer or an experienced radio/TV technician for help.
Xiaoling 69.12 501 )))
Xiaoye 8.1 502
503
Xiaoling 69.12 504 (((
Xiaoye 8.1 505 Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
Xiaoling 69.12 506 )))
Xiaoye 8.1 507
508
Xiaoling 69.12 509 (((
Xiaoye 8.1 510 The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
511 )))
Xiaoling 69.12 512 )))