NH310C User's Manual Ver_A7
Contents
1. N 2 p _ ue y i mui Netw AIR your NH 310C HPNA3 1 Ethernet over Cable HCNA End Point p USERS MANUAL ittp www netsysrcomitw NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Copyright Copyright 2011 by National Enhance Technology Corp All rights reserved Trademarks NETSYS is a trademark of National Enhance Technology Corp Other brand and product names are registered trademarks or trademarks of their respective holders Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics With respect to any examples or hints given herein any typical values stated herein and or any information regarding the application of the device National Enhance Technology Corp hereby disclaims any and all warranties and liabilities of any kind including without limitation warranties of non infringement of intellectual property rights of any third party Statement of Conditions In the interest of improving internal design operational function and or reliability NETSYS reserves the right to make changes to the products described in this document without notice NETSYS does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Maximum signal rate derived from IEEE Standard specifications Actual data throughput will vary Ne2. et De Lee HCNA Figure 2 2 R ear side of the Modem NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 And the table shows the description Table 2 3 Table 2 3 Connectors shown on the rear side of the Modem Connectors Type Description HCNA For connecting the 2 modems with RG59 75ohm coaxial cable coaxial cable LAN1 LAN2 RJ 45 For connecting to an Ethernet equipped device NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 0 TERR Installation 3 1 Hardware Installation This chapter describes how to install the modem and establish the network connections You may install the modem on any level surface ex a table or shelf However please take note of the following minimum site requirements before you begin NH 310C needs paste four rubber feet on the bottom to avoid scratching please refer to Appendix E Attaching Rubber Feet 3 2 Pre installation Requirements Before the start of actual hardware installation make sure to provide the right operating environment including power requirements sufficient physical space and proximity to other network devices that are to be connected Verify the following installation requirement e Power requirements 5 12VDC 1A or above e The device should be located in a cool dry place with at least 10cm 4in of space at the front and back for ventilation e Place the device away fr
3. Figure 3 2 NH 310C connections diagram 2 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 9 Cable Requirements ACAT 3 4 or 5 UTP unshielded twisted pair cable is typically used to connect the Ethernet device to the modem A 10Base T cable often consists of four pairs of wires two of which are used for transmission The connector at the end of the 10Base T cable is referred to as an RJ 45 connector and it consists of eight pins The Ethernet standard uses pins 1 2 3 and 6 for data transmission purposes Table A 1 Table A 1 RJ 45 Ethernet Connector Pin Assignments MDI MDI X FLN Signal Media Dependant Signal Media Dependant interface interface cross 1 TX Transmit Data RX Receive Data 2 TX Transmit Data RX Receive Data 3 RX Receive Data TX Transmit Data 4 Unused Unused 5 Unused Unused 6 RX Receive Data TX Transmit Data Figure 1 Standard RJ 45 repectacle connector 7 Unused Unused 8 Unused Unused Note Please make sure your connected cables are with same pin assignment as above table before deploying the cables into your network NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 ES White Orange ES White Orange ES Orange BS Orange ES White Green White Green Blue Blue White Blue White Blue Green Green
4. ES White Brown White Brown Brown Brown Figure A 2 Pin Assignments and Wiring for an RJ 45 Straight Through Cable 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 ES White Orange ES White Green B Orange B Green BS White Green EE White Orange Blue Eg White Brown White Blue Brown BS Green Orange White Brown Blue Brown White Blue Figure A 3 Pin Assignments and Wiring for an RJ 45 Crossover Cable NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 EH Product Specification Key Features amp Benefits Compliant with HomePNA3 1 HomePNA3 0 over coaxial cable HCNA specifications ITU T G 9954 Compliant with IEEE802 3 10Base T and IEEE802 3u 100Base Tx standards Compliant with IEEE802 3x flow control standard Provides 2 x 10 100M auto negotiation RJ 45 Ethernet ports with auto MDI MDIX Provides 2 x f type female coax connectors for HCNA and TV Supports transmission speed up to 200Mbps over coaxial cable and link establish under 160dBm Hz noise floor Supports point to point and point to multipoint application Supports IEEE802 1p priority mapping Supports IEEE802 1p TOS priority queue Supports IEEE802 1Q Tag VLAN pass through e Supports auto speed from 32Mbps up to 200Mbps upstream downstream Supports up to 10 endpoints or slaves Guaranteed QoS based on HomePNA3 1 parameterized QoS EMI certified by CE and FCC NH 310C HPNA3 1 over Coaxia
5. its 2 Ethernet RJ 45 port its HCNA coaxial connector and high low line speed quality Front Indicators The end point has Six LED indicators The following Table shows the description Table 2 1 Table 2 1 LED Indicators Description and Operation Descriptions HCNA system power good and also functioning properly Power HCNA is not ready or has malfunctioned Ethernet link is up LAN1 amp LAN2 Ethernet LED Transmit or receive activity Ethernet link is down HCNA is link to another HCNA pair HCNA O HCNA LED Transmit or receive activity HCNA is not connected Actual line rate is gt 80Mbps for upstream and downstream line rate Line Speed Actual line rate is 64Mbps lt X 32Mbps for upstream and HCNA LED downstream line rate Actual line rate is lt 32Mbps for upstream and downstream line rate NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Table 2 2 Line Speed performance with reference to Line speed LED Dataspeed Mbps Attenuator dB SNR dB Line speed LED on 80 or above 40 and below 28 64 42 to 48 27 48 42 to 48 25 32 42 to 48 23 32 or below 50 and above 22 2 3 Rear Panel The rear panel provides the physical connectors connected to the power adapter and any other network device The following figure shows the rear side of the Modem Figure 2 2 m
6. the dealer or an experienced radio television technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment If this telephone equipment causes harm to the telephone network the telephone company will notify you in advance that temporary discontinuance of service may be required But if advance notice isn t practical the telephone company will notify the customer as soon as possible Also you will be advised of your right to file a complaint with the FCC if you believe it is necessary The telephone company may make changes in its facilities equipment operations or procedures that could affect the 26 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 proper functioning of your equipment If they do you will be notified in advance in order for you to make necessary modifications to maintain uninterrupted service This equipment may not be used on coin service provided by the telephone company Connection to party lines is subject to state tariffs Important Safety Instructions Caution The direct plug in wall transformer serves as the main product for disconnecting The socket outlet shall be installed near the product and be readily accessible Caution Use only the power supply included with this product In the event the power supply is lost or damaged In the United States use only with CSA certif
7. AERUEES 11 3 4 HCNA CONNECTIONS 12 EE Cable Requirements 15 Product Specifications 17 BE Troubleshooting 19 ES FCC and CE Mark Warning sssss nnns 26 Attaching Rubber Feet 29 Warranty me 30 Chinese SJ T 11364 2006 E M 31 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 B Unpacking Information 1 1Check List Carefully unpack the package and check its contents against the checklist Package Contents 1 x HCNA Modem 1 to DC SV or 12V 1 Power Adapter 4 x Rubber Feet 1x RJ 45 Cable NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 IET Hardware Description This section describes the important parts of the modem It features the front indicators and rear connectors 2 1 Front Panel NH 310C Outward The front panel provides a simple interface monitoring of the end point Figure 2 1 snetsys POWER LAN1 LAN2 HCNA NH 310C em LINE SPEED LNK ACT m m m LNK ACT H L Figure 2 1 NH 310C Front Panel NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 2 2 LED indicators At a quick glance of the front panel it will be easy to tell if the modem has power signal from
8. d 4 Add TV signal repeater if TV signal source is too weak See C 1 Situation A I KN Weakened by the output television signal is due to environmental NH 310C supports i TV signal pass through but can not guarantee to be able to maintain an appropriate TV signal output to TV If the connection distance is too long lead to output of TV signal no signal or Notes c Put i2 Please note that NH 310C TV signals input power is unlimited user does not need add the i attenuator before NH 310C to weaken the TV signal source i3 If TV signal is too strong leading to the advent of television ripple please add an attenuator before TV NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Situation A TV signal is too weak Solution Add TV signal repeater before NH 310C TV signal repeater Situation B TV signalistoo strong Solution Add attenuator before TV NH 310C Insertion loss 3dB NH 310C Insertion loss 3dB NH 310C Insertion loss 3dB Max 60dB attenuation NH 310C Insertion loss 3dB Attenuator Max 60dB attenuation mum Coaxial Cable Coaxial Cable HCNA Port TV mum Coaxial Cable TV Port mmm Coaxial Cable TV E Coaxial Cable HCNA Port mmm Coaxial Cable TV Port Figure C 1 TV signal connection solution 21 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Because NH 310C can support 10 e
9. e will cause packet loss dielectric should be flush with the ridge C Debris inside connector for example loose shielding strands wrapped around the stinger will cause 30dB attenuation Note Please note that user need use RG59 75ohm coaxial cable to establish HomePNA network 25 NH 310C HPNA3 1 over Coaxial Cable HCNA End USER S MANUAL Ver A7 P FCC and CE Mark Warning FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a computing device pursuant to Part 15 of FCC class A rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generate 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 Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver The equipment and the receiver should be connected to outlets on separate circuits a PS i Consult
10. erson not under control of the original owner The above warranty is in lieu of any other warranty whether express implied or statutory including but not limited to any warranty of merchantability fitness for a particular purpose or any warranty arising out of any proposal specification or sample We shall not be liable for incidental or consequential damages We neither assume nor authorize any person to assume for any other liability WARNING Warranty Void If Removed WARNING 1 DO NOT TEAR OFF OR REMOVE THE WARRANTY STICKER AS SHOWN OR THE WARRANTY IS VOID 2 WARRANTY VOID IF USE COMMERCIAL GRADE POWER SUPPLY IS USED AT HARSH ENVIRONMENTS 30 NH 310C HPNA3 1 over Coaxial Cable HCNA End USER S MANUAL Ver A7 Chinese SJ T 11364 2006 Ap EA J te Pb Hg PBB 274 ZUM ep O O O O O O O O O O O O HIRE O O O O O O E O O O O O O O SJT 11364 2006 X SJ T 11364 2006 31
11. hich case the user may be required to take adequate measures WEEE Warning To avoid the potential effects on the environment and human health as a result of the presence of hazardous substances in electrical and electronic equipment end users of electrical and electronic equipment should understand the meaning of the crossed out wheeled bin symbol Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately 28 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 e Attaching Rubber Feet 1 Make sure mounting surface on the bottom of the Modem is grease and dust free 2 Remove adhesive backing from your Rubber Feet 3 Apply the Rubber Feet to each corner on the bottom of the Modem These footpads protect the Modem from shock and vibration Feet x 4 29 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Warranty The original owner that the product delivered in this package will be free from defects in material and workmanship for one year parts after purchase There will be a minimal charge to replace consumable components such as fuses power transformers and mechanical cooling devices The warranty will not apply to any products which have been subjected to any misuse neglect or accidental damage or which contain defects which are in any way attributable to improper installation or to alteration or repairs made or performed by any p
12. ied or UL listed Class 2 power supply rated 5 12Vdc 1A or above IN Europe use only with CE certified power supply rated 5 12Vdc 1A or above Do not use this equipment near water for example in a wet basement Avoid using a telephone during an electrical storm There may be a remote risk of electrical shock from lightning Do not use the telephone to report a gas leak in the vicinity of the leaking area If you experience trouble with this unit please contact customer service of your dealer immediately DO NOT DISASSEMBLE THIS EQUIPMENT It does not contain any user serviceable components 2 27 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 FCC Warning This equipment has been tested to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment can generate use and radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at owner s expense CE Mark Warning This is a class A product In a domestic environment this product may cause radio interference in w
13. l Cable HCNA End Point USER S MANUAL Ver A7 Product Specification Standards IEEE802 3 IEEE802 3u ITU T G 9954 standard 2 x RJ 45 10 100Mbps Ethernet port with Auto MDI MDIX 1 x F type female coaxial connector for HCNA Interfaces 1 x F type female coaxial connector for STB TV 1 x Power jack for 5 12VDC 1A power adapter Max Bandwidth Up to 200Mbps Max Noise Floor 160dBm Hz Up to 1100m over RG 59 75ohm coaxial cable 1 x Power LED 2 x Ethernet Link Activity LEDs 1 x HCNA Link Activity LED 2 x HCNA Line Speed Quality LED SAT HCNA Transmission Spectrum 12MHz 44MHz Dimensions 130mm x 94 5mm x 27mm 5 12 x 3 72 x 1 06 Lx W x H Operating 0 50 C 32 F 122 F Storage 20 C 70 C 4 F 158 F Humidity 10 90 non condensing LED Indicators Temperature External Power Adapter 5VDC 1A or 12VDC 1A for commercial type adapter NH 310C HPNA3 1 over Coaxial Cable HCNA End USER S MANUAL Ver A7 Troubleshooting Diagnosing the Modem s Indicators The endpoint can be easily monitored through its comprehensive panel indicators These indicators assist the network manager in identifying problems the hub may encounter This section describes common problems you may encounter and possible solutions Cause Defective External power supply pee heck the power plug by plugging in another that is functioning p
14. mpness dust or corrosive liquids DO NOT use this product near water for example in a wet basement or near a swimming pool Connect ONLY suitable accessories to the device Make sure to connect the cables to the correct ports DO NOT obstruct the device ventilation slots as insufficient air flow may harm your device DO NOT place items on the device DO NOT use the device for outdoor applications directly and make sure all the connections are indoors or have waterproof protection place Be careful when unplugging the power because it may produce sparks Keep the device and all its parts and accessories out of the reach of children Clean the device using a soft and dry cloth rather than liquid or atomizers Power off the equipment before cleaning it This product is recyclable Dispose of it properly NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Table of Contents EP 1 FOWO uuu TI PS 2 Safety ee 3 Table of Contents reer E ent Ree UU 4 Unpacking Information tuoesadganisunhantas 5 TIGCHECKLEISTS uum mu waa ats E nde Glin M TT 5 Hardware Description nnns 6 PA AFRONT PANEL 0 00 0 0 T T T 6 2 2EEDINDICATORS ee ee oe 7 2 3 REAR PANEL THEE 8 installation sss 10 3 1 HARDWARE INSTALLATION 10 3 2 PRE INSTALLATION REQUIREMENTS 0 10 3 3 GENER
15. ndpoints maximum and It uses the MAC address value to identify the identity of each endpoint 22 NH 310C HPNA3 1 over Coaxial Cable HCNA End USER S MANUAL Ver A7 System Diagnostics Power and Cooling Problems If the POWER indicator does not turn on when the power cord is plugged in you may have a problem with the power outlet power cord or internal power supply as explained in the previous section However if the unit power is off after running for a while check for loose power connections power losses or surges at the power outlet and verify that the fan on back of the unit is unobstructed and running prior to shutdown If you still cannot isolate the problem then the internal power supply may be defective In this case please contact your local dealer Installation Verify that all system components have been properly installed If one or more components appear to be malfunctioning e g the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly Transmission Mode The default method of selecting the transmission mode for RJ 45 ports is 10 100 Mbps Ethernet for coaxial connectors are 200Mbps HCNA It supports auto negotiation and is half duplex Therefore if the link signal is disrupted e g by unplugging the network cable and plugging it back in again or by resetting the power the port will try to reestablish communications
16. om direct sunlight heat sources or areas with a high amount of electromagnetic interference e Check if network cables and connectors needed for installation are available e Avoid installing this device with radio amplifying station nearby or transformer station nearby NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 3 3 General Rules Before making any connections to the modem take note the following rules e Ethernet Port RJ 45 All network connections to the end point Ethernet ports must be made using Category 5 UTP or above for 100 Mbps Category 3 4 UTP for 10Mbps No more than 100 meters of cabling maybe use between the MUX or HUB and an end node e HCNA Port Coaxial connector All Home network connections we recommend use RG 59 75 coaxial cable and link establish under 160dBm Hz noise floor e Multi Splitter All Home network connections could be use Multi Splitter or use mix of them as you would like to connect an end point device Multi Splitter NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 3 4 HCNA Connections The modem has been designed to operate on the coaxial cable installed in homes throughout the world They utilized the same cable and connectors commonly used for television The modem has 2 x Ethernet ports One port is used to connect to the ISP to provide Internet access and the other port is used to connect devices such as HUB concentrator b
17. ridge or router The device attached to these ports must support auto negotiation The 2x Coaxial connector are used to connect to TV or coaxial wall socket to another modem that connect its RJ 45 to the LAN card of another set of PC notebook or other internet access device or coaxial connector to TV or set top box The modem s coaxial connector must support the transmission of data up to 200Mbps across the existing coaxial cable and link establish under 160dBm Hz noise floor But make sure that the connector is inserted properly and lock Ethernet cable used must conform to FCC standard to ensure data integrity and it should not exceed 100meters 328feet The NH 310C supports up to 10 maximum NH 310C Endpoints NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 From EPON GPON OLT or from ADSL VDSL Cable TV Signal Ethernet Cable NH Coaxial Cable HCNA Port Coaxial Cable TV Port IP STB IP STB Figure 3 1 NH 310C connections diagram NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Satellite Cable Set Top Box m NH 310C VOIP VOIP Set Top Box Backbone H 310C RM _ Set Top Box NH 310C uem NV 600R m E s Wireless AP NH 310C Door Sensor PC Coaxial Cable HCNA Port Coaxial Cable TV Port Ethernet Cable Phone Cable
18. roperly Check the gt Solution adapter with another device If these measures fail to resolve the problem have the unit power Network interface ex a network adapter card on the attached device network cable or switch port is defective pU 2 1 Verify that the endpoint and attached device are powered on 2 2 Make sure the cable is plugged into both modems and corresponding device Solution 2 3 Verify that the proper cable type is used and its length does not exceed specified limits 2 4 Check the modem on the attached device and cable connections for possible defects 2 5 Replace the defective modem or cable if necessary 1 k a V NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 C It is a normal response of the device when it is running at 32 to 64Mbps or SNR value at 23 tol ads 27dB 1 1 1 aC DK SS SS SSS SSS To increase the data speed to more than 64Mbps so that line speed LED will light up green then Solution you have to increase the SNR value to 28 or above Either by ce the coaxial cable a 1 1 _ _ _______________ _ Please verify that the following items to help you clarify the problem 1 Verify coaxial cable must use RG59 75 ohm cable Solution 2 Verify TV signal source and TV if available 3 Check TV signal need to over 50MHz that will be passe
19. tance can withstand 60dB of the attenuation it meets the growing demand for high speed multimedia services With plug amp play this simply eliminates the pain in modification and high infrastructure cost Most importantly to be able to support point to point and point to multipoint applications allow networking for any locations such as home office sports center buildings apartments hotels resorts and other places that need a high bandwidth network Caution NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Safety Warnings For your safety be sure to read and follow all warning notices and instructions before using the device 4 9 6 6 DO NOT open the device or unit Opening or removing covers can expose you to dangerous high voltage points or other risks ONLY qualified service personnel can service the device Please contact your vendor for further information Use ONLY the dedicated power supply for your device Connect the power to the right supply voltage 110V AC used for North America and 230V AC used for Europe Place connecting cables carefully so that no one will step on them or stumble over them DO NOT allow anything to rest on the power cord and do NOT locate the product where anyone can work on the power cord DO NOT install nor use your device during a thunderstorm There may be a remote risk of electric shock from lightning DO NOT expose your device to da
20. twork conditions and environmental factors including volume of network traffic building materials and construction and network overhead lower actual data throughput rate Netsys does not warrant that the hardware will work properly in all environments and applications and makes no warranty and representation either implied or expressed with respect to the quality performance merchantability or fitness for a particular purpose Make sure you follow in line with the environmental conditions to use this product NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Foreword Attention Be sure to read this manual carefully before using this product Especially Legal Disclaimer Statement of Conditions and Safety Warnings Netsys NH 310C is the latest technological innovation of HomePNA3 1 Ethernet over coaxial cable end point NH 310C is designed for home and office applications that leverage the two most popular network connections for home use 10 100Mbps Ethernet connection and coaxial cable connection It is a norm that homes and offices are equipped with wired network that simply transfer small files and shared applications but the need for triple play services like transferring large multimedia files such as music video photo and deliver high speed VOIP data are ever increasing This is why NH 310C is designed to be a cost effective home networking solution With the data transmission up to 200Mbps and dis
21. with the attached device via auto negotiation If the device does not support auto negotiation communications can be easily lost i e reset to the wrong mode whenever the attached device is reset or experiences a power fluctuation The best way to resolve this problem is to upgrade these devices to a version that support Ethernet and 200Mbps HCNA 23 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 Physical Configuration If problems occur after altering the network configuration restore the original connections and try to track the problem down by implementing the new changes one step at a time Ensure that cable distances and other physical aspects of the installation that do not exceed recommendations System Integrity As a last resort verify the switch integrity with a power on reset Turn the power to the switch off and then on several times If the problem still persists and you have completed all the preceding diagnoses then contact your dealer Examples of a Compression F Connector CORRECT CONNECTOR CONDITION A Stinger is right length it protrudes a bit beyond the rim Metal Fittings Coax Line Check for signs of rust or corrosion Visually check visible coax for replace if necessary nicks splits and tangling 24 NH 310C HPNA3 1 over Coaxial Cable HCNA End Point USER S MANUAL Ver A7 AVOID THESE BAD CONDITIONS B Low dielectric a gap between the dielectric and ridg
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