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Gateway TLG3901B/BLV2 Series User Manual 

V2.0.4

 

16 

December 2020

 

 
 

3.6. 

System Settings 

Password Setting 

You can change the password as shown in Figure 3-10. Fill the new password and press 

Reset Password

 button, the new password applied in the next login. Instead of the default 

password, which is 

admin

, password needs to be 

at least 8 letters and must contain at 

least one number and one uppercase alphabet

. 

 

 

Figure 3-10 Change Password 

 

 

 

Содержание TLG3901BLV2

Страница 1: ...Gateway TLG3901B BLV2 User Manual V2 0 4 Deccember 2020 ...

Страница 2: ... Development 25 4 1 LoRaScript 25 4 1 1 LoRaScript API 32 4 1 2 Parse LoRaWAN Packet 37 4 1 3 Implement a Simple Protocol 39 4 2 Node RED 42 4 2 1 Node RED Example Receive LoRa Packet 42 4 2 2 Node RED Example Send LoRa Packet 44 4 2 3 Node RED Example Parse LoRaWAN Packet 46 5 MQTT Basic Concept and Demo 48 6 LoRa Packet Statistics and Logs 51 7 Troubleshooting 52 7 1 LoRaWAN Packet Forwarder Can...

Страница 3: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 II December 2020 9 References 55 10 Certification 56 ...

Страница 4: ...ata pro cessing You can use modern browsers such as Chrome and Firefox to manage TLG3901B BLV2 to setup concentrator channel packet forwarding MQTT broker and net work configuration and customize your plugins for designated purpose The followings are TLG3901B BLV2 s software and hardware specification and its front view and right side view Software Specification Table 1 1 Software Specification of...

Страница 5: ...ectivity Ethernet 10 100 Mbps Wireless LTE TLG3901BLV2 Full duplex LoRa Power Supply DC5V through Micro USB wireless transmission 2 4GHz LAN Ethernet 10 100 LoRa Antenna 2dBi x 2 Wireless Antenna 4 44dBi LTE Antenna TLG3901BLV2 0 53dBi 699 960MHz 3 01dBi 1710 2700MHz LED indication PWR LoRa Status Wireless LTE Frequency Range 920 6 MHz 928 MHz Japan 920 MHz 925 MHz Taiwan Modulation LoRa spreading...

Страница 6: ...BLV2 Series User Manual V2 0 4 5 December 2020 Figure 1 1 TLG3901B BLV2 Gateway Front and Back View Power LED LoRa LED Wireless LED Cellular LED Factory Reset Button Micro USB DC5V IN USB RJ45 LoRa Antenna LoRa Antenna ...

Страница 7: ...sed to connect to a network router which can access Internet The power supply is through Micro USB connector and supply with DC5V Figure 2 1 Setup TLG3901BLV2 equips LTE module To access Internet through LTE cellular network a SIM card nano sim must be installed The SIM card slot can be seen by opening cover at bot tom of TLG3901BLV2 Figure 2 2 Figure 2 2 SIM Card Slot of TLG3901BLV2 DC5V IN Netwo...

Страница 8: ...er as shown in Figure 2 4 4 Enter username and password to login the default username is admin and password is admin 5 Go to System Network Configuration to check the IP address of Ethernet and make sure it can access Internet 6 Go to Setup Channel Setup to set up the LoRa concentrator including receiving fre quency spreading factor For more detailed refers to section 3 2 Channel Setup 7 Activate ...

Страница 9: ...RED with our particular components for vis ualizing deployment in a data flow Figure 3 1 TLG3901B BLV2 Portal Figure 3 1 is TLG3901B BLV2 gateway portal overview the portal provides concentrator channel setup and LoRaWAN packet forwarder in Setup section We also provide Concen trator and MQTT controlling for enable disable concentrator and manage MQTT broker and publisher status A demonstration of...

Страница 10: ... and DHCP server you can choose any one of them in customizing network environments For security and system management TLG3901B BLV2 can change its password and support online upgrading in the Change Password and System Status Section 3 3 describes LoRaWAN Packet forwarder Setup section 3 4 and 3 5 introduces Node RED and MQTT settings System settings and network configuration are illustrated in 3...

Страница 11: ...cies for receiv ing packets there are some parameters must be set such as using LoRaWAN or not de fine Sync Word for identifying the packet prefix choosing each radio s central frequencies setup frequency bias in each channel to define standard LoRa channel bandwidth and other options Table 3 1 describes each parameter s options Figure 3 2 Channel Setup ...

Страница 12: ...field in Figure 3 2 chan_multiSF 0 7 The general channel settings include enable disable channel inter face hooking radio_0 radio_1 and frequency bias The chan_multiSF_x will receive packets with all spreading factor SF7 SF12 in designated frequency The actual frequency is shown as red color at last field in Figure 3 2 Note that chan_multiSF_x can only operate in 125K bandwidth Because radio_0 and...

Страница 13: ...perate over two independent chunk of 1 0MHz as shown in Figure 3 5 The two 1 0MHz intervals can overlap without problem and the number of channels in each interval is also arbitrary as show in Figure 3 6 915 7 MHz radio 0 916 5 MHz multiSF0 LoRaStd multiSF1 multiSF2 multiSF3 multiSF4 multiSF5 multiSF6 multiSF7 1 0MHz radio 1 1 0MHz Figure 3 5 Overlap of Radio Interval 912 5 MHz radio 0 916 5 MHz m...

Страница 14: ... ID Server Address and Server Port Up are used to set LoRaWAN server to forward packets All forwarding packets will through IP UDP link to a destination The Keepalive Interval Sta tistic Interval and Push Timeout define the aggressive connection policy and its refresh time If the Fake GPS enable each forward packet would append the GPS information The Packet Forwarder Control provide user to stop ...

Страница 15: ...de RED For login Node RED the default login user account and the password are admin however for a customizing the password can reset through Reset Password In the setting page the Status shows the Node RED stopped or running You can change Node RED sta tus through Stop and Start button but be patient the initialization start time of the Node RED in TLG3901B BLV2 is about 20 seconds Because TLG3901...

Страница 16: ... to subscribers in designated topics MQTT Publisher is a charge of receiving LoRa packets and publish message to MQTT broker MQTT Subscriber subscribes transmit packet from broker and emit the packet The topic string for MQTT Publisher and MQTT Subscriber can be set at Receive Packet Publish Topic and Transmit Packet Subscribe Topic You can stop or restart MQTT broker or MQTT publisher subscriber ...

Страница 17: ...ge the password as shown in Figure 3 10 Fill the new password and press Reset Password button the new password applied in the next login Instead of the default password which is admin password needs to be at least 8 letters and must contain at least one number and one uppercase alphabet Figure 3 10 Change Password ...

Страница 18: ...ction DHCP Fig ure 3 11 Static IP Figure 3 12 and DHCP Server Figure 3 13 To use the DHCP enable the DHCP checkbox Static IP needs information about IP address network mask and de fault gateway To act as DHCP Server the IP address network mask and DHCP start and end address must be provided Figure 3 11 Network Configuration Figure 3 12 Static IP Setup ...

Страница 19: ...ork Setting TLG3901B BLV2 provides a wireless AP for connected by laptop This wireless AP function can be enable disable from Wireless Network Figure 3 14 The SSID is also shown on this configuration page The password for connecting to TLG3901B BLV2 via wireless is tlg3901b Figure 3 14 Wireless Configuration ...

Страница 20: ... the 3G 4G module is present The setup of cellular network is shown at Figure 3 15 Please contact your cellular operator for the setting of APN Username and Password some operator setting only needs APN The Dial Num ber is usually 99 1 in most of countries DONOT change APN if you are not sure the number Figure 3 15 Cellular Network Setup ...

Страница 21: ...ng IP Forward is a function to share TLG3901B BLV2 network to devices connecting to TLG3901B BLV2 through wireless or LAN For example a laptop can access Internet via wireless connection to TLG3901B BLV2 if cellular network onTLG3901B BLV2 is con nected Figure 3 16 IP Forward Setup ...

Страница 22: ... on until upgrading finished The gateway time can be modified using Modify button and final when something wrong you can press Reboot to restore gateway in an initial status If you press Factory Reset button on the TLG3901B BLV2 front panel TLG3901B BLV2 re stores its system configuration to original status All settings such as concentrator channel packet forwarder and MQTT would be restored as de...

Страница 23: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 22 December 2020 Figure 3 17 TLG3901B BLV2 Upgrading ...

Страница 24: ...g kernel system LoRa Furthermore system process status memory usage and CPU usage are also shown here All this infor mation can be downloaded by clicking Download button Figure 3 18 System Logs LoRa Packet Statistics LoRa Packet Statistics shows the number of packets received by each channel Figure 3 19 LoRa Packet Statistics ...

Страница 25: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 24 December 2020 LoRa Receive Logs In this page it will display received data in real time Figure 3 20 LoRa Receive Logs ...

Страница 26: ...ript LoRaScript is a proprietary plugin mechanism that it based on JavaScript and Node js for providing add on on TLG3901B BLV2 Instead of providing all APIs from Node js LoRaScript only provides a set of Node js APIs and other third party APIs A list of APIs can be found at 4 1 1 Figure 4 1 LoRaScript ...

Страница 27: ...acks and methods for the user Table 4 2 and Table 4 3 illustrate ANNWS 01 2 1 W SYS rxpk and txpk components respectively Table 4 1 LoRaScript Callbacks and Methods Name Type Usage onInit Callback Plugin initialization method plugin can setup its initial procedure in this callback onLoRaRx dat Callback It would be invoked on received an incoming packet The data is a JSON object which complies with...

Страница 28: ...en modu equals LORA datr comprises SFnBWm where n is an integer representing the frame s spreading factor and m is an integer representing the frame s bandwidth in units of kHz When modu equals FSK datr comprises an integer representing the frame s bit rate in Hz codr string required if modu equals LoRa ECC code rate codr comprises the string k n where k represents the carried bits and n the total...

Страница 29: ...signed integer not required The output power which what the gateway is com manded to transmit the frame modu string not required The modulation technique used LORA representing LoRa modulation FSK representing FSK modulation datr string not required Datarate identifier When modu equals LORA datr comprises SFnBWm where n is an integer representing the frame s spreading factor and m is an integer re...

Страница 30: ...physical layer CRC generation by the transmitter List 4 1 rxpk Example time 2013 03 31T16 21 17 528002Z tmst 3512348611 chan 2 rfch 0 freq 866 349812 stat 1 modu LORA datr SF7BW125 codr 4 6 rssi 35 lsnr 5 1 size 32 data DS4CGaDCdG 48eJNM3Vai zDpsR71Pn9CPA9uCON84 List 4 2 txpk Example imme true freq 864 123456 rfch 0 powe 14 modu LORA datr SF11BW125 codr 4 6 ipol false size 32 data H3P3N2i9qc4yt7rK...

Страница 31: ...st 4 4 Construct and Send a txpk Pakcet in LoRaScript function onInit setInterval period_send 1000 send a txpk in every 1 second function period_send var msg Hello World var msg_size Buffer byteLength msg asci var base64str new Buffer msg toString base64 var json_obj imme true freq 915 5 rfch 0 powe 14 modu LORA datr SF7BW125 codr 4 6 ipol false size msg_size data base64str send_pkt JSON stringify...

Страница 32: ...acket var NwkSKey new Buffer 2b7e151628aed2a6abf7158809cf4f3c hex if lora_packet verifyMIC packet NwkSKey var AppSKey new Buffer 2b7e151628aed2a6abf7158809cf4f3c hex var dec lora_packet decrypt packet AppSKey NwkSKey toString hex var msg devaddr device toString hex data dec fport packet getFPort counter packet getFCnt freq raw freq datr raw datr debug_print JSON stringify msg ...

Страница 33: ...s org docs v0 12 7 api buffer html SlowBuffer Class crypto setEngine Function https nodejs org docs v0 12 7 api crypto html getCiphers Function getHashes Function createCredentials Function createHash Function Hash Class createHmac Function Hmac Class createCipher Function createCipheriv Function Cipher Class createDecipher Function createDecipheriv Function Decipher Class createSign Function Sign...

Страница 34: ...ame resolveMx resolveNaptr resolveNs resolveSoa resolveSrv resolvePtr resolveTxt reverse setServers http request Function https nodejs org docs v0 12 7 api http html get Function https request Function https nodejs org docs v0 12 7 api https html get Function net connect Function https nodejs org docs v0 12 7 api net html createConnection Function Sokcet Class isIP Function isIPv4 Function isIPV6 ...

Страница 35: ...s nodejs org docs v0 12 7 api timers html clearTimeout Function setInterval Function clearInterval Function unref Function ref Function setImmediate Function clearImmediate Function url parse Function https nodejs org docs v0 12 7 api url html format Function resolve Function util debuglog Function https nodejs org docs v0 12 7 api util html format Function log Function inspect Function isArray Fu...

Страница 36: ...flateRaw Class Unzip Class deflate Function deflateSync Function deflateRaw Function deflateRawSync Function gzip Function gzipSync Function gunzip Function gunzipSync Function inflate Function inflateSync Function inflateRaw Function inflateRawSync Function unzip Function unzipSync Function bcryptjs setrandomfallbackran dom Function https www npmjs com package bcryptjs genSaltSync Function genSal...

Страница 37: ...Function https github com kawanet msgpac k lite decode Function Encoder Class Decoder Class createEncodeStream Function createDecodeStream Function createCodec Function codec Class lora packet fromWire Function https github com anthonykirby lor a packet fromFields Function verifyMIC Function calculateMIC Function recalculateMIC Function decrypt Function constants Function mqtt connect Function htt...

Страница 38: ...Rx data debug_print on Recv data var raw JSON parse data var lorawan_packet new Buffer raw data base64 if lorawan_packet length 12 var device new Buffer 4 for var i 0 i 4 i device i lorawan_packet 4 i var packet lora_packet fromWire lorawan_packet var NwkSKey new Buffer 2b7e151628aed2a6abf7158809cf4f3c hex if lora_packet verifyMIC packet NwkSKey var AppSKey new Buffer 2b7e151628aed2a6abf7158809cf4...

Страница 39: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 38 December 2020 Figure 4 2 Execution of Parsing LoRaWAN Packet in LoRaScript ...

Страница 40: ...s shown in Figure 4 3 Illustration of TDMA Because gateway can simultaneously receive 49 different channels each channel presents a TDMA protocol Therefore a lot of nodes can be served in the same time But note that channels with different spreading factor have different data rate it must be careful to calculate transmission time of data and assign period of each time slot Figure 4 3 Illustration ...

Страница 41: ...k dgram createSocket udp4 cmd_sock on listening function var address cmd_sock address debug_print UDP Server listening on address address address port cmd_sock on message function message remote debug_print remote address remote port message cmd_node_address message 0 cmd_node_data message 1 update_cmd true cmd_sock bind cmd_port setInterval beacon 10000 broadcast beacon every 10 second function o...

Страница 42: ...DP message sent to server_ip server_port function beacon if update_cmd true debug_print Send beacon with cmd beacon_pkt 3 cmd_node_address beacon_pkt 4 cmd_node_data update_cmd false else debug_print Send beacon beacon_pkt 3 0 beacon_pkt 4 0 beacon_pkt 2 0x11 beacon cmd beacon_channel data new Buffer beacon_pkt toString base64 send_pkt JSON stringify beacon_channel beacon_pkt 1 ...

Страница 43: ...1 Node RED Example Receive LoRa Packet This section introduces how to receive LoRa packet in Node RED After login Node RED dragging lora node in input debug and udp node in output and function node in function into Flow 1 panel Then connecting output port of lora node to input port of debug node and output port of lora node to input port to function and output port of function to input port of udp...

Страница 44: ...de for sending received LoRa data to other end point Because the data field is coded into Base64 Decode Base64 encoded payload in udp node configuration is checked as shown in Figure 4 7 Figure 4 7 Configure UDP Node Then pressing Deploy on up right for starting the flow Receiving LoRa packets can be seen at debug panel as shown in right side of Figure 4 8 and also send to the other host via udp ...

Страница 45: ...Debug Panel 4 2 2 Node RED Example Send LoRa Packet A sending LoRa packet example by Node RED is introduced in this section This example creates a inject input node and clicking left part of inject node triggers a packet sent out through gateway as shown in Figure 4 9 Figure 4 9 Example of Sending LoRa Packet ...

Страница 46: ...n Payload field Figure 4 10 Edit Inject Node Next step is double clicking function node and input following JavaScript code in the node as shown in Figure 4 11 Then deploy this flow and clicking left part of inject node triggers a packet sent out each time var send_string new Buffer msg payload toString Base64 var send_json imme true freq 915 5 rfch 0 powe 14 modu LORA datr SF11BW125 codr 4 6 ipol...

Страница 47: ...gure 4 11 Edit Function Node 4 2 3 Node RED Example Parse LoRaWAN Packet There is a LoRaWAN parser node in Node RED Users can utilize it to parse LoRaWAN packet which is received from TLG3901B BLV2 as Figure 4 12 shown Figure 4 12 LoRaWAN Parser Node Fill device s key ...

Страница 48: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 47 December 2020 Figure 4 13 is an example of parsing LoRaWAN packet which is received on TLG3901B BLV2 Figure 4 13 Demonstration of LoRaWAN Parser Node ...

Страница 49: ...onfigure a topic publishing on it is enough Topics are treated as a hierarchy using a slash as a separator Ex lora rxpk For MQTT topic subscription we provide a MQTT Demonstration using MQTT fx which can be downloaded from http www mqttfx org After downloading and installing MQTT fx please launch MQTT fx and setting MQTT broker information as Figure 5 1 shown The username and password need to be i...

Страница 50: ...acket on TLG3901B BLV2 the Subscribe Topic must be filled with Receive Packet Public Topic in setting of MQTT on TLG3901B BLV2 and clicking the Sub scribe button Then we can send a LoRa packet from other nodes and see output on MQTT fx as Figure 5 3 shown Figure 5 3 Subscription Demonstration ...

Страница 51: ...with Transmit Packet Subscribe Topic in setting of MQTT on TLG3901B BLV2 Then entering transmitting packet information and clicking Publish button as Figure 5 4 shown The following string is used in this demonstration imme true freq 915 5 rfch 0 powe 14 modu LORA datr SF12BW125 codr 4 5 ipol false size 8 data MDAwMDAxMjM Figure 5 4 MQTT Publish Demonstration ...

Страница 52: ...Packet Statistics panel illustrated in Figure 6 1 It exhibits the total received packets and its total size in bytes on each frequency with different spreading factors This statistics would be refreshed period ically according to internal concentrator report threshold On another side the LoRa Receive Logs is a console emulator all raw rxpk packets would be printed on this panel in real time but on...

Страница 53: ...To check the status of network connection please use following script at LoRaScript for checking network connection to determine whether the gateway can connect to specific server Figure 7 1 illustrates the result of executing script List 7 1 LoRaScript for Checking Network Connection function onInit var dns require dns dns lookup www google com 4 function err address family debug_print DNS Server...

Страница 54: ...Gateway TLG3901B BLV2 Series User Manual V2 0 4 53 December 2020 Figure 7 1 Result of Executing Script of Checking Network Connection ...

Страница 55: ...pan Compliance Statement Add IP Forward Setting 8 4 V2 0 1 TLG3901B BLV2 8 5 V2 0 0 TLG3901B BL 8 6 V1 4 0 Update gateway type and login screen Add lora packet and msgpack lite library 8 7 V1 3 2 Add DNS related description 8 8 V1 3 1 Replace TLG5901A with TLG58 TLG59 series for presenting more gateway models 8 9 V1 3 0 Update to new hardware and web UI 8 10 V1 2 0 Update password setting at Node ...

Страница 56: ...ember 2020 9 References 1 http www semtech com wireless rf iot html 2 http mqtt org 3 Semtech ANNWS 01 2 1 W SYS Gateway to Server Interface 4 https github com Lora net 5 http www taifatech com products long range communication 6 Node RED http nodered org ...

Страница 57: ... 如造成干擾 應立即停用 亦無干擾之虞 始得繼續使用 無線資訊傳輸設備的製造商應確保頻率穩定性 如依製造商使用手冊上所述正常操作 發射的信號應維持 於操作頻帶中 使用無線產品時 應避免影響附近雷達系統之操作 取得審驗證明之低功率射頻器材 非經核准 公司 商號或使用者均不得擅自變更頻率 加大功率或變更原設 計之特性及功能 低功率射頻器材之使用不得影響飛航安全及干擾合法通信 經發現有干擾現象時 應立即停 用 並改善至無干擾時方得繼續使用 前述合法通信 指依電信管理法規定作業之無線電通信 低功率射頻器 材須忍受合法通信或工業 科學及醫療用電波輻射性電機設備之干擾 為減少電磁波干擾影響 請參照手冊妥適使用 LTE TX Frequency Band1 1920 1980MHz Band3 1710 1785MHz Band7 2500 2570MHz Band8 885 915MHz Band38...

Страница 58: ...或是其他水氣之不當接觸 請避免在灰塵及汙垢處 切勿接觸粉塵 污物 砂土 食物或是其他不適當的材料之接觸 若需清潔請勿使用酒精等熔劑清潔產品 請將插頭拔起 使用軟乾布清潔樣機 請勿在手濕時拿取樣品與電源器 雷擊時請勿接觸本樣機或是交流器 該動作可能會導致處電 請勿在電源不穩定的地區使用該產品 以免對樣機造成傷害 啟動該產品時 請先確保電源線是否已正確插入接地插頭 請避免不正確的連接方式 另外若需要拔除電源時 請從設備拔出電源線 請勿拉扯電源線 請使用 Kiwi technology Inc 所提供的電源線與電源器 請勿使用磨損或是折傷的電源線 當使用多插頭電源線使用樣品時 請注意總電量 以免造成損傷 用電安全貼心叮嚀 1 電器插頭務必插牢 不使鬆動 以免發生火花引燃附近易燃物品 同時勿讓小孩接近玩弄 以免觸電引發危 險 2 用電量較大之電器 冷暖氣機 烘乾機 微波爐 電磁爐 烤箱 電暖器 電...

Страница 59: ...線如有異常發燙或異味產生 可能為過載現象 應立即停止使用該電器 13 延長線應使用具保險絲安全裝置或過負荷保護裝置之產品 14 請插在正確的電壓供電插座 如 北美 台灣電壓 110V AC 歐洲 239V AC 15 請勿試圖修理樣機與電源變壓器與 USB Cable 若有損壞 請與 Kiwi Technology Inc 聯繫以尋求幫助 請勿將樣品跌落或是強烈撞擊 請勿切斷 扭曲 拉扯或是搖擺使用中的天線 電源線 電源器 請勿在電源線 電源組 樣品上放置任何物品 這可能造成過熱或是損傷 請勿擋住樣品散熱孔 通風口或是開口處 空氣對流不足將會造成熱當機或是損壞 請勿將任何異物插入樣品的任何插孔內 請勿將此設備安裝於戶外 此設備僅適合放置於室內使用 請將本產品和配件放置於兒童接觸不到的地方 對於間接或是直接影響對產品進行任何的損壞 故障 我們既不負責 使用樣品中 請勿隨意斷開 USB 電源連...

Страница 60: ...teway TLG3901B BLV2 Series User Manual V2 0 4 59 December 2020 易結露或潮濕的地方 暴露於過度振動與撞擊的區域 或是不平整的傾斜表面 暴露於過多煙霧 灰塵或灰塵的區域 限用物質含有情況標示聲明書 Declaration of the Presence Condition of the Restricted Substances Marking ...

Страница 61: ...on receiver it may cause radio interference Install and use equipment according to the instruction manual Equipment registered based on the confirmation measurement at the user installa tion site This is a product for which interference was measured at the present installation site and confirmed to comply with the standard of Voluntary Control Council for Interference by Information Technology Equ...

Страница 62: ...this manual The reproduction trans mission or use of this document or contents is not permitted without express written authority About The Symbols Various symbols are used in this manual the user s manual and on the product itself to ensure cor rect usage to prevent danger to the user and others and to prevent property damage The mean ings of these symbols are described below It is important that...

Страница 63: ... case immediately turn off the power switch and then disconnect the power plug from the power outlet After making sure that the smoke or odor has stopped contact your dealer Never attempt to make repairs yourself because this could be dangerous Use special caution for children and pets Incorrect handling could result in fire electrical shock injury burn or vision problem Use special caution in hou...

Страница 64: ...immediately turn off the power switch disconnect the power plug from the power outlet and contact your dealer Do not place the product on an unstable surface If the product should be dropped and or broken it could result in an injury and continued use could result in fire or electrical shock Do not place the product on an unstable slant or vibrant surface such as a wobbly or inclined stand Be caut...

Страница 65: ...rce could result in fire or personal injury The power source may explode if not handled properly Keep the power source away from children and pets If swallowed consult a physician immedi ately for emergency treatment Do not allow the power source in a fire or water Avoid fire or high temperature environment Do not hold the power source with the metallic tweezers Keep the power source in a dark coo...

Страница 66: ...nfluence on the cabinet of the product and other parts Do not place the product the cable and other parts in direct sunlight or near a hot object such as heater etc Avoid Magnetism Manufacture strongly recommends to avoid any magnetic contact that is not shielded or protected on or near the product itself ie Magnetic Security Devices or other product accessory that con tains magnetic material that...

Страница 67: ... diluted detergent directly Do not use an aerosol sprays solvents volatile substances or abrasive cleaner Before using chemical wipes be sure to read and observe the instructions Do not allow long term close contact with rubber or vinyl Avoid radio interference Any interfering radiation could cause disordered image or noises Avoid radio generator such as a mobile telephone transceiver etc around t...

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