Changes for page HP0D -- Full Hotspot for Helium User Manual
Last modified by Xiaoling on 2024/10/21 15:44
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... ... @@ -86,7 +86,6 @@ 86 86 === 1.4.1 Label information: === 87 87 88 88 89 -((( 90 90 **Device hostname:** (% class="mark" %)dragino-xxxxxx(%%) 91 91 **Band**: (% class="mark" %)US915/AU915/AS923_1-AS923_4/KR920/EU868/IN865/RU864(%%) 92 92 **Miner animal name**: (% class="mark" %)xxx-xxx-xxx(%%) ... ... @@ -94,7 +94,6 @@ 94 94 **Eth MAC address**: (% class="mark" %)A8: 40: 41: EF: FE: CD(%%) 95 95 **Login**: (% class="mark" %)root/d59f2d5b (the root is the Login account for the Web-UI and SSH.)(%%) 96 96 **SN**: (% class="mark" %)device serial number. 97 -))) 98 98 99 99 100 100 ... ... @@ -101,9 +101,7 @@ 101 101 = **2. Quick Start & Onboarding** = 102 102 103 103 104 -((( 105 105 The HP0D is configured as a Wi-Fi Access Point by factory default. You can access and configure the HPD after connecting to its Wi-Fi network, or via its WAN Ethernet port. 106 -))) 107 107 108 108 109 109 == **2.1 Connect HP0D Web UI** == ... ... @@ -137,9 +137,7 @@ 137 137 === **2.1.2 Connect via HP0D hostname** === 138 138 139 139 140 -((( 141 -Connect the HP0D Ethernet port to your router and HP0D will obtain an IP address. If your PC(Windows/Mac/Ubuntu) connects to the same network with the HP0D, you can access the HP0D Web-UI via HP0D's hostname. 142 -))) 136 +Connect the HP0D Ethernet port to your router and HP0D will obtain an IP address. If your PC(Windows/Mac/Ubuntu) connects to the same network with the HP0D, you can access the HP0D Web-UI via HP0D’s hostname. 143 143 144 144 Like: (% class="mark" %)__**//http:~/~/dragino-4ba54a//**__ 145 145 ... ... @@ -212,7 +212,7 @@ 212 212 ))) 213 213 214 214 ((( 215 -Mobile APP will get info from the onboarding server. If the MAC address doesn 't appear, it means the network connection of the mobile to the onboarding server might have an issue.209 +Mobile APP will get info from the onboarding server. If the MAC address doesn’t appear, it means the network connection of the mobile to the onboarding server might have an issue. 216 216 217 217 218 218 ))) ... ... @@ -239,7 +239,6 @@ 239 239 [[image:1651828427715-679.png||height="374" width="635"]] 240 240 241 241 242 - 243 243 == **2.4 Set the Port Forwarding** == 244 244 245 245 ... ... @@ -254,23 +254,16 @@ 254 254 ))) 255 255 256 256 ((( 257 -((( 258 -(% style="color:red" %)**Note: Please refer to more detailed Settings** 250 +Note: Please refer to more detailed Settings 259 259 ))) 260 -))) 261 261 262 262 ((( 263 -((( 264 264 [[https:~~/~~/docs.helium.com/troubleshooting/network-troubleshooting/>>url:https://docs.helium.com/troubleshooting/network-troubleshooting/]] 265 265 ))) 266 -))) 267 267 268 268 ((( 269 -((( 270 270 [[https:~~/~~/www.youtube.com/watch?v=GKusVC7ovrE>>url:https://www.youtube.com/watch?v=GKusVC7ovrE]] 271 -))) 272 272 273 - 274 274 275 275 ))) 276 276 ... ... @@ -282,7 +282,6 @@ 282 282 [[image:1651828687205-178.png||height="323" width="657"]] 283 283 284 284 285 - 286 286 == **3.2 Check the LoRaWAN Server Address** == 287 287 288 288 ... ... @@ -289,10 +289,8 @@ 289 289 [[image:image-20220607160428-1.png||height="472" width="654"]] 290 290 291 291 292 - 293 293 == **3.2.1 Configure the Secondary LoRaWAN Server** == 294 294 295 - 296 296 [[image:image-20220607161130-2.png||height="501" width="1112"]] 297 297 298 298 ... ... @@ -303,17 +303,16 @@ 303 303 304 304 305 305 289 + 306 306 == **3.3 Check Miner configuration** == 307 307 308 308 309 309 [[image:image-20220506181408-1.png||height="451" width="513"]] 310 310 311 - 312 312 ((( 313 - (% style="color:red" %)//**Note: Check the Region and Height, the default height is greater than 1, if it is 1 please Click the mid button of Update, and then wait 10mins to check here.**//296 +//**Note: Check the Region and Height, the default height is greater than 1, if it is 1 please Click the mid button of Update, and then wait 10mins to check here.**// 314 314 315 315 316 - 317 317 == **//3.4 Check the Miner state//** == 318 318 319 319 ... ... @@ -320,11 +320,12 @@ 320 320 [[image:image-20220531171836-9.png||height="776" width="1155"]] 321 321 322 322 323 -((( 324 -(% style="color:red" %)//**Note: Absorption status can show whether the hotspot is working properly The p2p network can see how your hotspot is interacting with the surrounding hotspots usually, the nat_type should be '**//(% style="color:blue" %)**//none'//** 325 -))) 305 +//**Note: Absorption status can show whether the hotspot is working properly**// 326 326 307 +//** The p2p network can see how your hotspot is interacting with the surrounding hotspots**// 327 327 309 + //usually, the nat_type should be '**none'**// 310 + 328 328 329 329 ))) 330 330 ... ... @@ -342,13 +342,12 @@ 342 342 ))) 343 343 344 344 ((( 345 -//The user needs to connect the antenna cable 's SMA connector to the HP03 and connect the N-Type connector to the antenna and install it as below~://328 +//The user needs to connect the antenna cable’s SMA connector to the HP03 and connect the N-Type connector to the antenna and install it as below~:// 346 346 ))) 347 347 348 348 ((( 349 349 [[image:1651832205608-998.png||height="349" width="198"]] 350 350 351 - 352 352 353 353 ))) 354 354 ... ... @@ -395,23 +395,20 @@ 395 395 [[image:image-20220608202118-2.png]] 396 396 397 397 398 - 399 399 = **6. How to change the Wireless function of HP0D** = 400 400 401 - 402 402 //The wireless function is configured as AP by default and the web page does not support configuration,// 403 403 404 404 //if you want to configure it as STA(client)connection mode,// 405 405 406 -//you can configure your WiFi info on the** (% style="color:blue" %)/Network/WiFi(%%)**page.//386 +//you can configure your WiFi info on the** /Network/WiFi **page.// 407 407 408 408 409 - (% style="color:red" %)**//Note: the wireless state is as AP//**389 +**//Note: the wireless state is as AP//** 410 410 411 411 [[image:image-20220531170243-5.png||height="469" width="967"]] 412 412 413 413 414 - 415 415 == **6.1 Access WiFi configuration page** == 416 416 417 417 ... ... @@ -418,7 +418,6 @@ 418 418 [[image:image-20220531165803-2.png]] 419 419 420 420 421 - 422 422 == **6.2 Enter your WiFi information and save** == 423 423 424 424 ... ... @@ -425,14 +425,11 @@ 425 425 [[image:image-20220531165958-3.png]] 426 426 427 427 428 - 429 429 == **6.3 Change the WiFi mode.** == 430 430 431 431 432 432 [[image:image-20220531170131-4.png]] 433 433 434 - 435 - 436 436 == **6.4 Wait system to restart** == 437 437 438 438 ... ... @@ -439,10 +439,9 @@ 439 439 [[image:image-20220531170501-7.png]] 440 440 441 441 442 - (% style="color:red" %)//**Note: When the time remaining is finished it will turn to the home page.**//417 +//**Note: When the time remaining is finished it will turn to the home page.**// 443 443 444 444 445 - 446 446 == **6.5 Check the STA state** == 447 447 448 448 ... ... @@ -449,7 +449,6 @@ 449 449 [[image:image-20220531170705-8.png||height="484" width="990"]] 450 450 451 451 452 - 453 453 = **7. Trouble Shootings** = 454 454 455 455 == **7.1 How to get a wallet address?** == ... ... @@ -458,7 +458,6 @@ 458 458 **//Download the helium Hotspots APP on the Apple or Google Play store to generate your own wallet.//** 459 459 460 460 461 - 462 462 == **7.2 Onboarding ~-~- Unable to access Web-UI ~-~-> Miner** == 463 463 464 464 ... ... @@ -469,7 +469,6 @@ 469 469 ((( 470 470 //If you first boot the device where you need to wait for 10 mins for the initialization connection to the Helium server.// 471 471 472 - 473 473 474 474 ))) 475 475 ... ... @@ -486,7 +486,6 @@ 486 486 **//It might relate to the network which might be up to 10mins.//** 487 487 488 488 489 - 490 490 == **7.4 Onboarding – Bad Gateway** == 491 491 492 492 ... ... @@ -496,7 +496,6 @@ 496 496 //**This is caused by the process leading too long which just needs to refresh the page.**// 497 497 498 498 499 - 500 500 == **7.5 Onboarding ~-~- Why did QR Code generate aways fail?** == 501 501 502 502 ... ... @@ -506,20 +506,17 @@ 506 506 ((( 507 507 //**This may be related to the current block height, if the device is synchronizing to the latest height or if the device block height is much lower than the current height as the above picture like '1 1', the QR code generation may fail.**// 508 508 509 - 510 510 511 511 ))) 512 512 513 513 == **7.6 Onboarding ~-~- Why is the QR Code not quite the same as the manual?** == 514 514 515 - 516 516 [[image:1651832742262-209.png||height="297" width="365"]] 517 517 518 518 519 519 ((( 520 -//**Please ensure that you enter the correct wallet address and that your network is up and running, the user can click the button of (% style="color:red" %)‘Clean’(%%)to re-generate the QR Code.**//487 +//**Please ensure that you enter the correct wallet address and that your network is up and running, the user can click the button of ‘Clean’ to re-generate the QR Code.**// 521 521 522 - 523 523 524 524 ))) 525 525 ... ... @@ -530,13 +530,12 @@ 530 530 531 531 532 532 ((( 533 -//**If you see the MAC Address shows the (% style="color:red" %)‘Unknown’(%%)where is due to the provisioning error, please contact us to help you solve it.**//499 +//**If you see the MAC Address shows the ‘Unknown’ where is due to the provisioning error, please contact us to help you solve it.**// 534 534 535 - 536 536 537 537 ))) 538 538 539 -== **7.8 Onboarding – MAC address is being refreshed after scanning the QR Code**==504 +== 7.8 Onboarding – MAC address is being refreshed after scanning the QR Code == 540 540 541 541 542 542 ((( ... ... @@ -546,28 +546,26 @@ 546 546 ))) 547 547 548 548 ((( 549 -//**If you don 't see the MAC address, make sure your mobile has a good internet connection.**//514 +//**If you don’t see the MAC address, make sure your mobile has a good internet connection.**// 550 550 ))) 551 551 552 552 [[image:1651832880009-473.png]] 553 553 554 554 520 +== //**7.9 HP0D Web ~-~-> Miner ~-~-> Version shows ‘short’**// == 555 555 556 -== **7.9 HP0D Web ~-~-> Miner ~-~-> Version shows ‘short’** == 557 557 558 - 559 559 **//This is caused by the server connection delay, which does not affect the regular use.//** 560 560 561 561 [[image:1651832959907-357.png]] 562 562 563 563 564 - 565 565 == **7.10 Mobile APP crash after scanning the QR Code?** == 566 566 567 567 568 568 * //**Make sure you have input the correct Wallet address to generate QR Code.**// 569 569 * //**Make sure your mobile app uses the same wallet address as the one to generate QR Code.**// 570 -* //**Make sure your mobile app 's relevant permission is enabled.**//533 +* //**Make sure your mobile app’s relevant permission is enabled.**// 571 571 * //**Known: The Android 11 version may cause this kind of issue.**// 572 572 573 573 == **7.11 Why the frequency/region is not the same as what I purchased?** == ... ... @@ -580,7 +580,6 @@ 580 580 ((( 581 581 //**If your HP0D Web-UI – Miner region is not the same as the shell labels, please contact our support team that will solve this issue for you.**// 582 582 583 - 584 584 585 585 ))) 586 586 ... ... @@ -594,7 +594,6 @@ 594 594 ((( 595 595 [[https:~~/~~/docs.helium.com/lorawan-on-helium/frequency-plans>>url:https://docs.helium.com/lorawan-on-helium/frequency-plans]] 596 596 597 - 598 598 599 599 ))) 600 600 ... ... @@ -604,7 +604,6 @@ 604 604 //We do not recommend doing this, it may damage your device// 605 605 606 606 607 - 608 608 == **7.14 Low Reward and not transmit issue** == 609 609 610 610 ... ... @@ -615,7 +615,6 @@ 615 615 [[image:image-20220527114519-1.png||height="579" width="851"]] 616 616 617 617 618 - 619 619 == **7.15 Why is my miner version not the latest** == 620 620 621 621 ... ... @@ -631,9 +631,8 @@ 631 631 **// Use the "draginoups" command to check//** 632 632 633 633 634 - (% style="color:red" %)**//Note: How to access the hotspot CLI refer to ( Such as //**//[[Step 5.>>url:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/HP0D#H5.SSHAccessforLinuxconsole]]** )**//593 +**//Note: How to access the hotspot CLI refer to ( Such as //**//[[Step 5.>>url:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/HP0D#H5.SSHAccessforLinuxconsole]]** )**// 635 635 636 - 637 637 [[image:image-20220601101358-1.png]] 638 638 639 639 ... ... @@ -640,7 +640,6 @@ 640 640 641 641 == **7.16 Why is my miner running down?** == 642 642 643 - 644 644 //the default, the Miner is managed by docker.// 645 645 646 646 //If you find the miner is offline where the miner is running down.// ... ... @@ -648,12 +648,12 @@ 648 648 649 649 **What You can do?** 650 650 651 - (% style="color:blue" %)**1. Reboot the hotspot and check again.**608 +**~1. Reboot the hotspot and check again.** 652 652 653 653 //Usually, if the miner is just down, then a reboot is the quickest way// 654 654 655 655 656 - (% style="color:blue" %)**2. Reinstall the Miner manually.**613 +**2. Reinstall the Miner manually.** 657 657 658 658 //If rebooting does not solve the problem you can reinstall MINER by one of the following methods// 659 659 ... ... @@ -660,17 +660,15 @@ 660 660 **1). There is an update button in the middle of the miner page, click this button and then the miner will be reinstalled.** 661 661 662 662 663 - **2). Run the (% style="color:red" %)"//minerup updat//e"(%%)command to reinstall the miner**620 + **2). Run the "//minerup updat//e" command to reinstall the miner** 664 664 665 665 666 666 667 667 [[image:image-20220610094825-2.png||height="457" width="835"]] 668 668 669 - 670 670 [[image:image-20220610094755-1.png||height="706" width="834"]] 671 671 672 672 673 - 674 674 == **7.17 More commands for debugging.** == 675 675 676 676 ... ... @@ -686,9 +686,11 @@ 686 686 //3). Is the height gap between local height and remote height kept within 100// 687 687 688 688 689 - (% style="color:red" %)**//Note: You can find the above three points on the Miner page, andIf you are familiar with the Linux command line you can use the following command//**644 +**//Note: You can find the above three points on the Miner page, and //** 690 690 646 +**//If you are familiar with the Linux command line you can use the following command//** 691 691 648 + 692 692 (% class="box infomessage" %) 693 693 ((( 694 694 minerup update #~-~-> reinstall miner but not clearing memory ... ... @@ -703,7 +703,6 @@ 703 703 ))) 704 704 705 705 706 - 707 707 == **7.18 Why does my hotspot not have some of the features described in this WiKi** == 708 708 709 709 ... ... @@ -719,18 +719,16 @@ 719 719 ))) 720 720 721 721 722 - 723 723 = **8. How to flash a new OS for the hotspot, the hotspot's setting will be factory settings** = 724 724 725 - 726 726 The hotspot is based on the Rpi-4B so the OS has been installed on the SD card. 727 727 728 728 So you have to re-flash the image into the SD card. 729 729 730 - (% style="background-color:yellow" %)**Warning: Do not reset unless necessary**684 +**Warning: Do not reset unless necessary** 731 731 732 732 733 - (% style="color:blue" %)//**Preparations:**//687 +//**Preparations:**// 734 734 735 735 1. //Open the HP0D shell, and take out the SD card from the Raspberry PI 4B (Make sure the SD card is empty )// 736 736 ... ... @@ -743,7 +743,7 @@ 743 743 5. //SD Card **[[formatter>>url:http://repo.dragino.com/release/tool/PanasonicSDFormatter.zip]]**// 744 744 745 745 746 - (% style="color:blue" %)**HP0D's enclosure**700 +**HP0D's enclosure** 747 747 748 748 749 749 [[image:image-20220615204902-1.png||height="633" width="918"]] ... ... @@ -753,38 +753,35 @@ 753 753 754 754 755 755 756 -=== (% style="color:blue" %)**Step 1. Formatting the SD Card**(%%)===710 +=== **Step 1. Formatting the SD Card** === 757 757 758 758 759 759 [[image:image-20220609111027-9.png]] 760 760 761 761 716 +=== **Step 2. Select the OS image ** === 762 762 763 -=== (% style="color:blue" %)**Step 2. Select the OS image **(%%) === 764 764 765 - 766 766 [[image:image-20220609104907-8.png]] 767 767 768 768 722 +=== **Step 3. Select the target ** === 769 769 770 -=== (% style="color:blue" %)**Step 3. Select the target **(%%) === 771 771 772 - 773 773 [[image:image-20220609104637-2.png]] 774 774 775 775 [[image:image-20220609104701-3.png]] 776 776 777 777 730 +=== **Step 4. Flash start** === 778 778 779 -=== (% style="color:blue" %)**Step 4. Flash start**(%%) === 780 780 781 - 782 782 [[image:image-20220609104727-4.png]] 783 783 784 784 [[image:image-20220609104741-5.png]] 785 785 786 786 787 -=== (% style="color:blue" %)**Flash Complete**(%%)===738 +=== **Flash Complete** === 788 788 789 789 790 790 [[image:image-20220609104415-1.png]] ... ... @@ -793,10 +793,8 @@ 793 793 == **Step 4. Re-install the SD card into the hotspot and boot it** == 794 794 795 795 796 - 797 797 == **Step 5. Configure the correct region for the miner** == 798 798 799 - 800 800 **by the default, the factory settings apply to the US915.** 801 801 802 802 **if your region is not the US915, you have to configure the correct region for the miner.** ... ... @@ -832,7 +832,6 @@ 832 832 [[image:image-20220609151513-5.png]] 833 833 834 834 835 - 836 836 (% class="box infomessage" %) 837 837 ((( 838 838 ~#~##check the miner version ... ... @@ -843,7 +843,6 @@ 843 843 [[image:image-20220609151419-3.png]] 844 844 845 845 846 - 847 847 (% class="box infomessage" %) 848 848 ((( 849 849 ~#~##unblock the function of wireless ... ... @@ -858,13 +858,12 @@ 858 858 859 859 = **9. How does the HP0D access to the network via a USB 4G Dongle** = 860 860 861 - 862 862 We have reserved enough space inside the HP0D to use a USB 4G Dongle, 863 863 864 864 so you can install a USB 4G Dongle in order for the hotspot to access the network via 4G. 865 865 866 866 867 - (% style="color:green" %)//**Preparations:**//813 +//**Preparations:**// 868 868 869 869 //**1). A USB 4G Dongle, Such as HUAWEI E3327,ZTE...**// 870 870 ... ... @@ -873,30 +873,25 @@ 873 873 //**3). open the hotspot's shell.**// 874 874 875 875 876 - 877 877 == **9.1. Open the HP0D shell and access the USB 4G Dongle into the Rpi.** == 878 878 879 - 880 880 [[image:image-20220627153334-2.png]] 881 881 882 882 883 - 884 884 == **9.2. Checking the USB 4G Dongle network** == 885 885 886 - 887 887 We have installed drivers for common USB 4G Dongle, 888 888 889 889 and managed by NetworkManager, once hp0d detects an available USB 4G Dongle it will try to dial up the range network 890 890 891 891 892 - **//HUAWEI-E3327//**834 +//HUAWEI-E3327// 893 893 894 894 [[image:image-20220627154526-9.png||height="762" width="725"]] 895 895 896 896 839 +//ZTE// 897 897 898 -**//ZTE//** 899 - 900 900 [[image:image-20220627154201-5.png]] 901 901 902 902 ... ... @@ -904,18 +904,18 @@ 904 904 = **10. PoE introduction** = 905 905 906 906 907 -//The HP0D is use the (% style="color:blue" %)**IEEE 802.3 af compliant PoE port**(%%)(input 44 ~~ 57 v, output 12V)//848 +//The HP0D is use the **IEEE 802.3 af compliant PoE port** (input 44 ~~ 57 v, output 12V)// 908 908 909 909 //So you can use the PoE //switches// or PoE injector to power the device.// 910 910 911 911 912 -((( 913 -(% style="color:red" %)**Note: The RJ45 Indicator light only represents the PoE power supply, so when you use DC to power the hotspot and the RJ45 indicator light is off ~-~--> this is normal** 914 -))) 853 +**Note: The RJ45 Indicator light only represents the PoE power supply, ** 915 915 855 +**so when you use DC to power the hotspot and the RJ45 indicator light is off ~-~--> this is normal** 916 916 917 - (% style="background-color:yellow" %)**Wiring schematic:** 918 918 858 +**Wiring schematic:** 859 + 919 919 [[image:image-20220616143347-1.png]] 920 920 921 921 ... ... @@ -923,14 +923,11 @@ 923 923 924 924 = **11. OTA Version Info** = 925 925 926 - 927 927 == **When does the OTA update happen?** == 928 928 929 929 930 930 **//HP0D will check OTA update on a) Every Booting. b) Every Night. Below is the OTA update version info//** 931 931 932 - 933 - 934 934 == **# 2022/05/14** == 935 935 936 936 ... ... @@ -951,7 +951,6 @@ 951 951 952 952 == **# 2022/05/31** == 953 953 954 - 955 955 1. //Add WiFi STA icon display// 956 956 1. //Optimize AP icon display// 957 957 1. //Optimize home icon display// ... ... @@ -960,7 +960,6 @@ 960 960 961 961 = **12. Supports** = 962 962 963 - 964 964 ((( 965 965 **//If you are experiencing issues and can’t solve them, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].//** 966 966 ))) ... ... @@ -968,27 +968,24 @@ 968 968 ((( 969 969 **//With your question as detailed as possible. We will reply and help you in the shortest.//** 970 970 971 - 972 972 973 973 ))) 974 974 975 975 = **13. Order Info** = 976 976 912 +(% style="color:#0000ff" %)**HP0D-XXX** 977 977 978 -(% style="color: blue" %)**HP0D-XXX**914 +(% style="color:#0000ff" %)**XXX**(% style="color:black" %): Frequency Band 979 979 980 -(% style="color:blue" %)**XXX**(%%): Frequency Band 916 +* **AS923**: LoRaWAN AS923 band 917 +* **AU915**: LoRaWAN AU915 band 918 +* **EU868**: LoRaWAN EU868 band 919 +* **KR920**: LoRaWAN KR920 band 920 +* **US915**: LoRaWAN US915 band 921 +* **IN865**: LoRaWAN IN865 band 981 981 982 -* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 983 -* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band 984 -* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band 985 -* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band 986 -* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band 987 -* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 988 - 989 989 = **14. Manufacturer Info** = 990 990 991 - 992 992 ((( 993 993 **Shenzhen Dragino Technology Development co. LTD** 994 994 ))) ... ... @@ -1006,7 +1006,6 @@ 1006 1006 1007 1007 = **15. FCC Warning** = 1008 1008 1009 - 1010 1010 ((( 1011 1011 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: 1012 1012 )))