Last modified by Kilight Cao on 2024/12/31 16:31
<
From version < 67.1 >
edited by Xiaoye
on 2022/07/25 20:13
To version < 83.4 >
edited by Xiaoling
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Title
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1 -LPS8v2 LoRaWAN Indoor Gateway
1 +LPS8v2 LoRaWAN Indoor Gateway User Manual
Author
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1 -XWiki.Xiaoye
1 +XWiki.Xiaoling
Content
... ... @@ -1,8 +1,9 @@
1 +(% style="text-align:center" %)
1 1  [[image:image-20220620202334-2.png||height="467" width="809"]]
2 2  
3 3  
4 4  (((
5 -**LPS8v2 User Manual**
6 +
6 6  
7 7  
8 8  )))
... ... @@ -11,44 +11,65 @@
11 11  
12 12  {{toc/}}
13 13  
15 +
16 +
17 +
18 +
14 14  = **1. Introduction** =
15 15  
21 +
16 16  == **1.1 What is LPS8v2** ==
17 17  
24 +
18 18  (((
26 +(((
19 19  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.
28 +)))
20 20  
30 +(((
21 21  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.
32 +)))
22 22  
34 +(((
23 23  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.
36 +)))
24 24  
38 +(((
25 25  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.
40 +)))
26 26  
42 +(((
27 27  LPS8v2 supports (% style="color:green" %)**remote management**(%%). System Integrator can easy to remote monitor the gateway and maintain it.
44 +)))
28 28  
29 29  
47 +
30 30  == **1.2 Specifications** ==
31 31  
32 -**Hardware System:**
33 33  
51 +(% style="color:#037691" %)**Hardware System:**
52 +
34 34  * CPU: Quad-core Cortex-A7 1.2Ghz
35 35  * RAM: 512MB
36 36  * eMMC: 4GB
37 37  
38 -**Interface:**
57 +(% style="color:#037691" %)**Interface:**
39 39  
40 40  * 10M/100M RJ45 Ports x 1
41 41  * Multi-Channel LoRaWAN Wireless
42 42  * WiFi 802.11 b/g/n
43 43  
44 -**Operating Condition:**
63 +(% style="color:#037691" %)**Operating Condition:**
45 45  
46 46  * Work Temperature: -20 ~~ 65°C
47 47  * Storage Temperature: -20 ~~ 65°C
48 48  * Power Input: 5V, 2A, DC
49 49  
69 +
70 +
50 50  == **1.3 Features** ==
51 51  
73 +
52 52  * Open Source Debian system
53 53  * Managed by Web GUI, SSH via WAN or WiFi
54 54  * Remote Management
... ... @@ -61,73 +61,86 @@
61 61  ** Semtech UDP Packet Forwarder
62 62  ** LoRaWAN Basic Station
63 63  ** ChirpStack-Gateway-Bridge (MQTT)
64 -* Built-in //**The Things Network**// local LoRaWAN server
65 -* Built-in  //**Node-Red**// local Application server
86 +* Built-in (% style="color:#037691" %)//**The Things Network**//(%%) local LoRaWAN server
87 +* Built-in  (% style="color:#037691" %)//**Node-Red**// (%%)local Application server
66 66  
89 +
90 +
67 67  == **1.4 Block Diagram** ==
68 68  
69 69  
94 +
70 70  == **1.5 LED Indicators** ==
71 71  
97 +
72 72  LPS8-V2 has totally four LEDs, They are:
73 73  
74 74  
75 -//**➢ Power LED**: This RED LED will be solid if the device is properly powered//
101 +(% style="color:blue" %)//**➢ Power LED**//(%%)//: This RED LED will be solid if the device is properly powered//
76 76  
103 +(% style="color:blue" %)//**➢ LoRa LED**//(%%)//: This RGB LED will blink GREEN when the LoRaWAN module starts or transmit a packet//
77 77  
78 -//**➢ LoRa LED**: This RGB LED will blink GREEN when the LoRaWAN module starts or transmit a packet//
105 +(% style="color:blue" %)//**➢ SYS LED**//(%%)//: This RGB LED will show different colors in different states~://
79 79  
107 +// ✓ **SOLID BLUE:** The device is alive with a LoRaWAN server connection.//
80 80  
81 -//**➢ SYS LED**: This RGB LED will show different colors in different states~://
109 +// ✓ **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//
82 82  
83 -// ✓ SOLID BLUE: The device is alive with a LoRaWAN server connection.//
111 +// ✓** SOLID RED:** Device doesn't have an Internet connection.//
84 84  
85 -// ✓ 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//
113 +(% style="color:blue" %)//**➢ ETH LED**//(%%)//: This LED shows the ETH interface connection status.//
86 86  
87 -// ✓ SOLID RED: Device doesn’t have an Internet connection.//
88 88  
89 89  
90 -//**➢ ETH LED**: This LED shows the ETH interface connection status.//
91 -
92 -
93 93  = **2. Quick Start** =
94 94  
119 +
95 95  The LPS8-V2 supports network access via Ethernet or Wi-Fi connection and runs without a network.
96 96  
97 97  In most cases, the first thing you need to do is make the lps8-v2 accessible to the network.
98 98  
99 99  
125 +
100 100  == **2.1 Connects to the network and accesses the gateway Web UI** ==
101 101  
102 102  
103 103  == **2.1.1 connect the network.** ==
104 104  
105 -=== ===
106 106  
107 -=== **Method 1**: Connect via Ethernet with DHCP IP from the router ===
132 +=== (% style="color:blue" %)**Method 1**(%%):  Connect via Ethernet with DHCP IP from the router ===
108 108  
134 +
135 +(((
109 109  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.
137 +)))
110 110  
139 +(((
111 111  You can also use this IP to connect.
141 +)))
112 112  
113 113  [[image:image-20220622100129-1.png||height="332" width="1263"]]
114 114  
115 115  
116 -=== **Method 2**: Connect via WiFi with DHCP IP from the router ===
117 117  
147 +=== (% style="color:blue" %)**Method 2**(%%):  Connect via WiFi with DHCP IP from the router ===
118 118  
149 +
119 119  [[image:image-20220622100542-2.png||height="369" width="1256"]]
120 120  
121 121  
153 +(((
122 122  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.
155 +)))
123 123  
124 124  
125 -**Steps to connect via fallback IP:**
126 126  
127 -~1. Connect PC’s Ethernet port to LPS8-V2's WAN port
159 +(% style="color:#037691" %)**Steps to connect via fallback IP:**
128 128  
161 +~1. Connect PC's Ethernet port to LPS8-V2's WAN port
162 +
129 129  2. Configure PC's Ethernet port has  IP: 172.31.255.253 and Netmask: 255.255.255.252
130 130  
165 +
131 131  [[image:image-20220622101433-4.png]]
132 132  
133 133  
... ... @@ -137,41 +137,51 @@
137 137  [[image:image-20220622102210-5.png||height="569" width="1039"]]
138 138  
139 139  
140 -Fill in the WiFi information by checking the box and clicking **Save&Apply**
175 +Fill in the WiFi information by checking the box and clicking (% style="color:red" %)**Save&Apply**
141 141  
142 142  
143 143  [[image:image-20220622102702-6.png]]
144 144  
145 145  
181 +
146 146  **Wi-Fi configuration successful**
147 147  
148 148  
149 149  [[image:image-20220622102847-7.png]]
150 150  
187 +
151 151  [[image:image-20220622102901-8.png||height="513" width="1011"]]
152 152  
153 153  
154 154  
155 -
156 156  == **2.2 The LPS8-V2 is registered and connected to The Things Network** ==
157 157  
158 158  
159 159  === **2.2.1 Select your area frequency** ===
160 160  
197 +
198 +(((
161 161  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.
162 162  
201 +
202 +)))
203 +
163 163  [[image:image-20220622103332-9.png]]
164 164  
165 165  
207 +
166 166  === **2.2.2 Get the only gateway EUI** ===
167 167  
210 +
168 168  Every LPS8-V2 has a unique gateway id. The ID can be found on LoRaWAN Semtech page:
169 169  
213 +
170 170  [[image:image-20220622103355-10.png]]
171 171  
172 172  
173 -**Note: Choose the cluster that corresponds to a specific Gateway server address**
217 +(% style="color:red" %)**Note: Choose the cluster that corresponds to a specific Gateway server address**
174 174  
219 +
175 175  **➢ Europe 1:**  corresponding Gateway server address:  **eu1.cloud.thethings.network**
176 176  
177 177  **➢ North America 1:**  corresponding Gateway server address:  **nam1.cloud.thethings.network**
... ... @@ -185,12 +185,14 @@
185 185  
186 186  
187 187  
188 -== 2.2.3 Register the gateway to The Things Network ==
233 +== **2.2.3 Register the gateway to The Things Network** ==
189 189  
235 +
190 190  **Login to The Things Network**
191 191  
192 192  [[https:~~/~~/console.cloud.thethings.network/>>https://console.cloud.thethings.network/]]
193 193  
240 +
194 194  **Add the gateway**
195 195  
196 196  [[image:image-20220622104252-13.png||height="511" width="953"]]
... ... @@ -199,13 +199,17 @@
199 199  **Get it online**
200 200  
201 201  
249 +
202 202  = **3. Web Configure Pages** =
203 203  
204 204  
205 205  == **3.1 Home** ==
206 206  
255 +
207 207  //Shows the system running status~://
208 208  
258 +
259 +
209 209  == **3.2 LoRa Settings** ==
210 210  
211 211  
... ... @@ -216,19 +216,21 @@
216 216  
217 217  //Different LPS8v2 hardware versions can support different frequency ranges~://
218 218  
219 -* (% style="color:#0000ff" %)//**868**//(% style="color:black" %)//: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.//
270 +* (% style="color:#0000ff" %)//**868**//(% style="color:black" %)//: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865, or KZ865.//
220 220  * (% style="color:#0000ff" %)//**915**//(% style="color:black" %)//: valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920//
221 221  
222 222  (% class="wikigeneratedid" %)
223 -//After the user choose the frequency plan,  the user can see the actual frequency is used by checking the page **LogRead ~-~-> LoRa Log**//
274 +//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**//
224 224  
276 +
225 225  (% class="wikigeneratedid" %)
226 226  [[image:image-20220616110739-1.png||height="372" width="682"]]
227 227  
228 228  
229 -//**Note ***: See this instruction for how to customize the frequency band~://
281 +(((
282 +(% 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/]]__//**
283 +)))
230 230  
231 -//__[[How to customized LoRaWAN frequency band - DRAGINO>>url:http://8.211.40.43/xwiki/bin/view/Main/How%20to%20customized%20LoRaWAN%20frequency%20band/]]__//
232 232  
233 233  
234 234  == **3.3 LoRaWAN Settings** ==
... ... @@ -239,20 +239,26 @@
239 239  
240 240  //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.//
241 241  
295 +
242 242  [[image:image-20220616111932-2.png||height="516" width="672"]]
243 243  
244 244  
299 +
245 245  === **3.3.2 LoRaWAN ~-~-> LoRaWAN Basic Station** ===
246 246  
247 247  
248 248  //This page is for the connection set up to the TTN Basic Station, AWS-IoT, etc.//
249 249  
305 +
250 250  [[image:image-20220616113246-3.png||height="396" width="672"]]
251 251  
252 252  
309 +(((
253 253  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/]]__
311 +)))
254 254  
255 255  
314 +
256 256  == **3.4 Network Settings** ==
257 257  
258 258  
... ... @@ -262,12 +262,14 @@
262 262  [[image:image-20220616114756-4.png||height="251" width="669"]]
263 263  
264 264  
324 +
265 265  === **3.4.2 Network ~-~-> System Status** ===
266 266  
267 267  
268 -[[image:image-20220616115229-5.png||height="548" width="665"]]
328 +[[image:image-20220820134112-2.png||height="539" width="668"]]
269 269  
270 270  
331 +
271 271  === **3.4.3 Network ~-~-> Firewall** ===
272 272  
273 273  
... ... @@ -274,6 +274,7 @@
274 274  [[image:image-20220616115351-6.png||height="244" width="661"]]
275 275  
276 276  
338 +
277 277  == **3.5 System** ==
278 278  
279 279  
... ... @@ -283,6 +283,7 @@
283 283  Shows the system info:
284 284  
285 285  
348 +
286 286  === **3.5.2 System ~-~-> Backup/Restore** ===
287 287  
288 288  
... ... @@ -290,67 +290,99 @@
290 290  
291 291  
292 292  
293 -= **4. Build-in LoRaWAN Network  Server ~-~- The Things Network - Stack (TTN-V3)** =
356 += **4. Build-in Server** =
294 294  
295 295  
296 -The default factory version of LPS8-V2 is installed with the Built-in LoRaWAN Server: **The Things Network - Stack (Open Source 3.19 Version).**
359 +The default factory version of LPS8-V2 is installed with the built-in Applicant server: (% style="color:blue" %)**Node-Red, and**(%%) LoRaWAN Server: (% style="color:blue" %)**The Things Network - Stack (Open Source 3.19 Version).**
297 297  
298 -You can access the gateway's built-in LNS server of **The Things Network - Stack **via the URL((% class="mark" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> //**__(%%)) in your browser.
299 299  
362 +[[image:image-20220820115644-1.png]]
300 300  
301 -Such as (% class="mark" %)__**//http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>//**__
302 302  
365 +(% style="color:red" %)**Note:**
303 303  
304 -Login account:
367 + **Path**: System ~-~-> Built-in Server
305 305  
306 -**User ID: ** (% class="mark" %)admin
307 307  
308 -**Password: ** (% class="mark" %)dragino
370 +**Troubleshooting:**
309 309  
310 310  
311 -[[image:image-20220725171719-1.png||height="570" width="769"]]
373 +**~ 1. URL does not jump properly**
312 312  
313 -**Note:  (% class="mark" %)A portion of the sample devices that were not installed with Node-Red.
314 - You can complete the installation manually with the following command.(%%)**
375 + For the ttn-stack, you can click the update the URL which will update the configuration where change the hotsname to the current local IP address as the URL.
315 315  
377 + For the Node-Red, you can use the local IP address and the port is 18880 to access it.
316 316  
317 -(% class="box infomessage" %)
318 -(((
319 -(% class="mark" %)cd /tmp && wget http:~/~/repo.dragino.com/release/tool/ttnstack/autoinstall_ttn-stack.sh
320 320  
321 -(% style="background-color:#fcf8e3" %)chmod +x /tmp/autoinstall_ttn-stack.sh && /tmp/autoinstall_ttn-stack.sh ttn-stack
322 -)))
323 323  
381 +== **4.1 LoRaWAN Network  Server ~-~- The Things Network - Stack (TTN-V3)** ==
324 324  
325 -= **5. Build-in Application Server ~-~- Node-Red** =
326 326  
384 +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.
327 327  
328 -The default factory version of LPS8-V2 is installed with the built-in Applicant server: **Node-Red.**
386 +Such as  (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>//**__
329 329  
330 -You can access the gateway's built-in AS server of **Node-Red **via the URL((% class="mark" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> //**__(%%)) in your browser.
331 331  
389 +Login account:
332 332  
333 -Such as (% class="mark" %)__**//http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>//**__
391 +**User ID: ** ** (% style="background-color:yellow" %)admin(%%)**
334 334  
393 +**Password: ** ** (% style="background-color:yellow" %)dragino(%%)**
394 +
395 +
396 +[[image:image-20220725171719-1.png||height="570" width="769"]]
397 +
398 +
399 +
400 +== **4.2. Application Server ~-~- Node-Red** ==
401 +
402 +
403 +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.
404 +
405 +
406 +Such as (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>//**__
407 +
408 +
335 335  [[image:image-20220725172124-3.png||height="610" width="843"]]
336 336  
337 337  
338 338  
339 -**Note:  (% class="mark" %)A portion of the sample devices that were not installed with Node-Red.
340 - You can complete the installation manually with the following command.(%%)**
413 += **6. How users can access LPS8v2 using serial USB** =
341 341  
342 342  
416 +**USB TTL to LPS8v2  Connection:**
417 +
418 +Port 1 of the UART on the LPS8v2 is GND
419 +
343 343  (% class="box infomessage" %)
344 344  (((
345 -(% class="mark" %)cd /tmp && wget  http:~/~/repo.dragino.com/release/tool/nodered/autoinstall_nodered.sh
346 -chmod +x /tmp/autoinstall_nodered.sh && /tmp/autoinstall_nodered.sh node-red
422 +TXD  <~-~--> UART RXD (Gray line)
423 +
424 +RXD  <~-~--> UART TXD (White line)
425 +
426 +GND <~-~--> GND (Black line)
347 347  )))
348 348  
349 -[[image:image-20220725195041-1.jpeg||height="413" width="820"]]
350 350  
430 +**LPS8v2 UART connection photo**
351 351  
432 +[[image:image-20220804163015-1.png||height="621" width="466"]]
433 +
434 +
435 +
436 +In the PC,you can use the serial port tool(such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]] in Windows), you need to set the serial baud rate to (% style="color:blue" %)**115200**(%%) to access the serial console for LPS8v2. LPS8v2 will output system info once power on as below:
437 +
438 +
439 +[[image:image-20220804164928-3.png||height="320" width="332"]]
440 +
441 +
442 +[[image:image-20220804164747-2.png||height="622" width="594"]]
443 +
444 +
445 +
352 352  (% style="color:inherit; font-family:inherit; font-size:29px" %)**10. Supports**
353 353  
448 +
354 354  (((
355 355  **//If you are experiencing issues and can't solve them, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].//**
356 356  )))
... ... @@ -359,38 +359,46 @@
359 359  **//With your question as detailed as possible. We will reply and help you in the shortest.//**
360 360  
361 361  
457 +
362 362  = **11 Reference** =
363 363  
460 +
364 364  * Install Tago Core: Refer **Install Tago Core in LPS8v2** in[[ Instruction>>doc:Main.Tago\.IO.WebHome]].
462 +* [[Advance OS Reference Guide for LPS8v2>>doc:Main.Armbian OS instruction.WebHome]].
365 365  
464 +
465 +
366 366  
367 367  )))
368 368  
369 369  = **12. Order Info** =
370 370  
471 +
371 371  (% style="color:#0000ff" %)**LPS8v2-XXX-YYY**
372 372  
373 373  (% style="color:#0000ff" %)**XXX**(% style="color:black" %): Frequency Band
374 374  
375 -* **AS923**: LoRaWAN AS923 band
376 -* **AU915**: LoRaWAN AU915 band
377 -* **EU868**: LoRaWAN EU868 band
378 -* **KR920**: LoRaWAN KR920 band
379 -* **US915**: LoRaWAN US915 band
380 -* **IN865**: LoRaWAN IN865 band
476 +* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
477 +* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
478 +* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
479 +* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
480 +* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
481 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
381 381  
382 382  (% style="color:#0000ff" %)**YYY**(% style="color:black" %): 4G Cellular Option
383 383  
384 -* ** E**: EMEA, Korea, Thailand, India.
385 -* ** A**: North America/ Rogers/AT&T/T-Mobile.
386 -* ** AU**: Latin America, New Zeland, Taiwan
387 -* ** J**: Japan, DOCOMO/SoftBank/ KDDI
485 +* (% style="color:red" %)**E**(%%):  EMEA, Korea, Thailand, India.
486 +* (% style="color:red" %)**A**(%%):  North America/ Rogers/AT&T/T-Mobile.
487 +* (% style="color:red" %)**AU**(%%): Latin America, New Zeland, Taiwan
488 +* (% style="color:red" %)**J**(%%):  Japan, DOCOMO/SoftBank/ KDDI
388 388  
389 389  More info about valid bands, please see [[EC25-E product page>>url:https://www.quectel.com/product/ec25.htm]].
390 390  
391 391  
493 +
392 392  = **13. Manufacturer Info** =
393 393  
496 +
394 394  **Shenzhen Dragino Technology Development co. LTD**
395 395  
396 396  Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad
... ... @@ -398,21 +398,39 @@
398 398  LongCheng Street, LongGang District ; Shenzhen 518116,China
399 399  
400 400  
504 +
401 401  = **14. FCC Warning** =
402 402  
507 +
508 +(((
403 403  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:
510 +)))
404 404  
512 +(((
405 405  ~-~- Reorient or relocate the receiving antenna.
514 +)))
406 406  
516 +(((
407 407  ~-~- Increase the separation between the equipment and receiver.
518 +)))
408 408  
520 +(((
409 409  ~-~- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
522 +)))
410 410  
524 +(((
411 411  ~-~- Consult the dealer or an experienced radio/TV technician for help.
526 +)))
412 412  
413 413  
529 +(((
414 414  Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
531 +)))
415 415  
416 416  
534 +(((
417 417  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.
536 +
537 +
418 418  )))
539 +)))
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