Manual ETNC V126
Contents
1. Configuration on ETNC ETHERNET NETWORK LOCAL ETHERNET IP 192 168 0 20 AX25 IP 44 150 1 145 GATEWAY IP 44 150 12 1 FLEXNET IP 192 168 0 1 UTP RJ45 CROSSOVER CABLE DESTINATION CALL S50SOU 0 MY CALL S 51MO 0 A DB9 1 1 CABLE DIGI 1 CALL S55YLJ 4 TX DELAY 0 5 msec H500 AERIAL CABLE TX TAIL 0 4 msec SLOT TIME 0 7 msec PERSISTANCE 0 75 S51MO amp MKM 7 3 2 CONFIGURATION OF TRANSPARENT IP PROTOCOL 3 2 1 Example of configuration of TRANSPARENT IP PROTOKOL and more computers IP ADDRESS 44 150 1 145 GATEWAY 44 150 12 1 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 44 150 1 130 GATEWAY 44 150 12 1 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 44 150 1 20 GATEWAY 44 150 12 1 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 44 150 1 146 GATEWAY 44 150 12 1 DNS 44 150 1 1 193 2 1 66 Configuration on ETNC ETHERNET NETWORK LOCAL ETHERNET IP 192 168 0 20 AX25 IP 44 150 1 145 GATEW AY IP 44 150 12 1 FLEXNET IP 44 150 1 145 UTP RJ45 CABLE DESTINATION CALL S50SOU 0 MY CALL S51MO 0 DB9 1 1 CABLE DIGI 1 CALL S55YLJ 4 TX DELAY 0 5 msec H500 AERIAL CABLE TX TAIL 0 4 msec SLOT TIME 0 7 msec PERSISTANCE 0 75 At this protocol is necessary to write relation table between radio amateur IP and radio amateur call sign in this version of software is this not jet possible and all IP goes out with the same radio amateur call sign S51MO amp MKM g 3 2 2 Examp2. EI ZrO wawr 00 licenze wr prorder wr 5 wRatenew t E R WSF TE hle B FTP ini sS E7TPS5 y WEE TESS al 2 9 2 Bullet Proof FTP Choose Options General Options Firewall and switch on Use passive mode Pe Heap Gupe se repr P tap Gupieise pro rr aes 2C riesci inten S Seu qr Se ey ejin auis irit Goeth P earnan ete lin 9 5 FTP EXPLORER Choose View Options Firewall and switch on Use PASV Mode SSIMO amp MKM 19 94 Internet Explorer Choose Tools Internet Options Advanced and switch on Use Passive FTP for firewall and modem compatibility Internet Options Settings Show Go button in Address bar Show Internet Explorer an the desktop Underline links s Always O Hover O Never C Use inline AutoComplete for Web addresses Use inline 4utoComplete in Windows Explorer eS Ee aE a Use smooth scrolling HTTP 1 1 settings Use HTTP 1 1 C Use HTTP 1 1 through proxy connections Ej Microsott V i Orniogocdi Java JIT prevajalnik zahteva ponovni zagon C Omogo i javansko konzolo zahteva ponovni zagon 10 USE OF FLEXNET AND WPP PROGRAMS ETNC enables of usage of FLEXNET driver and from this also all software which exploit FLEXNET as a driver FLEXNET and WPP are together pack in http lea hamradio si s5 1 mo download wpp zip All files from this URL must be transferred to C WPP and unzipped After WPP exe is started automatically is loaded also FLEXNET dr
3. function ping Moreover there is a possibility to monitor traffic on display function listen and look of version of program with function info All this functions from this chapter works without LAN connected 6 1 FUNCTION PING Ping function is started with key ping from basic state ETNC can generate ping packet himself and transmit it to the RAIG In upper side of the display alternate show IP address to which is ping send and name of the profile and time to get back ping packet from RAIG In lower side of the display shows bar line which represent average receive ping packets if last 16 packets 1s 100 received there is bar 16 boxes long if from last 16 packets received only 8 packets there is bar 8 boxes long Normally the interval between pings is 500 msec This interval can be changed from 100 msec to 1500 msec with and key At every receiving ping packet there is short beep heard from beeper inside ETNC One more press to arrow key change the lower side of display to S meter S51MO amp MKM 15 This ping function is very useful at settings of direction and polarization of aerial and at sting of RIG Function is switched off with key menu or is automatically switched off after 30 minutes 6 2 FUNCTION LISTEN Function listen is started with key Isn Display shows radio traffic namely destination of the packet and from who is packet from Function is switched off with key menu Function does not switch of automat
4. CAL IP PROTOCOL and TRANSPARENT IP PROTOKOL see chapter 3 To reach next parameter MENU key must be pressed In this step the name any name of the profile can be set There are 6 signs available capital letters or numbers With keys and sign above pointer is changed With key arrow pointer is moved to right To reach next parameter MENU key must be pressed S51MO amp MEM 12 In this step IP address from LAN point of view is set Whit keys and number above pointer is changed With key arrow pointer is moved to right To reach next parameter MENU key must be pressed In this step our radio amateur IP is set Whit keys and number above pointer is changed With key arrow pointer is moved to right To reach next parameter MENU key must be pressed In this step IP of RAIG 1s set To reach next parameter MENU key must be pressed In this step IP address from main computer is set this one on which Flexnet will run To reach next parameter MENU key must be pressed In this step call sign of RAIG is set Ssid have to be set to zero To reach next parameter MENU key must be pressed S51MO amp MKM 13 In this step my call sign is set Ssid have to be set to zero To reach next parameter MENU key must be pressed In this step firs Supervozeljs call sign must be set Ssid can be the channel number of connection to next Supervozelj or RAIG if only one Supervozelj is used or simply set ssid to zer
5. DESTINATION CALL S50SOU 0 MY CALL S 51MO 0 DIGI 1 CALL S55YLJ 4 TX DELAY 0 5 msec TX TAIL 0 4 msec SLOT TIME 0 7 msec PERSISTANCE 0 75 IP ADDRESS 192 168 0 1 GATEWAY 192 168 0 20 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 192 168 0 2 GATEWAY 192 168 0 20 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 192 168 0 3 GATEWAY 192 168 0 20 DNS 44 150 1 1 193 2 1 66 IP ADDRESS 192 168 0 4 GATEWAY 192 168 0 20 DNS 44 150 1 1 193 2 1 66 UTP RJ45 CABLE DB9 1 1 CABLE H500 AERIAL CABLE Each computer in LAN has his IP address The best way is that our main computer has IP which end with number 1 for instance 192 168 0 1 next computer connected to net has next IP for instance 192 168 0 2 and so on ETNC there for must have some higher IP which is not in any computer for instance 192 168 0 20 In this case from LAN point of view ETNC has IP 192 168 0 20 That other computers know where to send Internet packets each computer on LAN must has set gateway to IP from ETNC in this case this is 192 168 0 20 in each computer gateway must be set to this IP ON ETNC under FLEXNET IP must be written IP from main computer in this case 192 168 0 1 Only on main computer we will run Flexnet driver and for instance WPP SSIMO amp MKM 3 1 2 Example of configuration of LOCAL IP PROTOKOL and one computer AERIAL IP ADDRESS 192 168 0 1 GATEWAY 192 168 0 20 DNS 44 150 1 1 193 2 1 66 ETNC
6. ETNC IP AX25 V1 26 P d cma om um User manual SSIMO amp MKM S51MO amp MKM 3 1 INTRODUCTION Packet radio has well spread among Slovene radio amateurs Beginning of radio amateur wireless network has come with AX25 protocol Radio amateurs have written a lot of software for this AX25 protocol monitor programs BBS DXCLUSTER etc On other side in computer networks IP protocol is used with his own protocols on higher levels TCP FTP HTTP On this area is available still many more also of cost free programs for connection between computers which enable transfer of files of pictures of talk Main magnet which pulls majority of users of packet radio is access on world web over radio amateur wireless network In Slovenia is possible to access Internet over few radio amateur wireless Internet gateway SSOLEA S50SOU S50DXX SSOFER S50AOP There was a need to build small portable device which can be connected to LAN and deal with PSK radio station with power supply of 12 V ETNC enables to work with amateurs programs as are WPP SP for classical connection between radio amateur computers At the same time ETNC enables use of a countless programs which exploit IP connection which are not radio amateur programs and therefore don t know AX25 protocol Only request for connection ETNC to computer is LAN network card on computer ETNC can be connected directly to computer with crossover cable if just on
7. NATION CALL SS50BBB 0 MY CALL S51CCC 0 DIGI 1 CALL S55DDD 8 or S55DDD 0 DIGI 2 CALL SSSAAA 3 or left blank if DIGI 1 CALL is S55DDD 0 DIGI 3 CALL left blank SSIMO amp MKM 11 5 SETINGS OF ETNC In ETNC four deferent profiles of parameters can be set On each profile different settings can be set path to RAIG IP addresses tx delay persistence During activity profiles can be switched among each other There are three possible ways to set parameters a With assistance of keys in front of ETNC b Through RS232 cable and terminal program c With TELNET program The variant B and C are about way of entering identical they differ only in manner of incorporation 5 1 SETINGS PARAMETERS THROUGH KEY PADS In normal state is on ETNC next readout In upper side of display is written the number and name of profile In lower side of display are written functions of the keys in that moment Left key is for menu enter to setting menu left middle key is for ping ping to the RAIG right middle key is for listen display current traffic on display and right key is for info display version of the software and voltage of power supply Press on key menu shows the following picture Between edit key edit change of profile with keys plus and minus and back to menu key ok can be chosen For modify parameters edit key must be pressed and display shows following picture With keys and can be switched among LO
8. NECTION ETNC TO ONE OR MORE PC COMPUTERS WITH LAN HUB ETNC can be connected to LAN HUB with UTP LAN RJ45 cable On LAN can be more computers and each of this computers has access to Internet through ETNC The traffic flow is separate for each computer with port number in IP protocol 3 CONFIGURATION OF LAN NETWORK For correctly working of ETNC LAN network must be carefully adjust There are two main manners of working a LOCAL IP PROTOCOL PC computer has set any local IP for instance 192 168 0 1 This IP never goes to the Internet because ETNC change this IP to radio amateur IP for instance on transmit 192 168 0 1 goes to 44 150 1 145 on receive vice versa In this mode of working more than one PC computer can be connected each one whit his own IP for instance first 192 168 0 1 second 192 168 0 2 third 192 168 0 3 b TRANSPARENT IP PROTOCOL PC computer has set radio amateur IP for instance 44 150 1 145 ETNC in this mode do not change IP IP which is set in PC computer goes to Internet directly In this mode only one computer can be connected to ETNC For beginners LOCAL IP PROTOCOL mode is recommended S51MO amp MKM 5 3 1 CONFIGURATION OF LOCAL IP PROTOCOL 3 1 Example of configuration of LOCAL IP PROTOKOL and more PC computers SWITCH or HUB EEN nnn AERIAL Configuration on ETNC ETHERNET NETWORK LOCAL ETHERNET IP 192 168 0 20 AX25 IP 44 150 1 145 GATEW AY IP 44 150 12 1 FLEXNET IP 192 168 0 1
9. amp MKM 22 At his point power supply must be switched on All upper side of ETNC display become dark lower side is blank On PC Auto is clicked Writing software to ETNC begins When program correctly ends transfer it writes All OK If transfer does not succeed reset key on ETNC must be pressed and try again with Auto A wie i I Flash Memory Writer J i304 Picture 2 correctly ends transfer to ETNC At this point power supply must be switched off On ETNC bridges must be set to original position J1 to right J2 to right J3 to left JS to right Switch on the power supply ETNC himself writes basic parameters to flash memory After start succeed press again reset key on ETNC Now is ETNC ready to write your parameters in it Attention at every upgrade all parameters must be written again Warn unfortunately must to worn that mentioned program works on slower machines less than 700M Hz and on older Windows Windows 98 Windows 98SE Immediately when new program will be available will be on my home page to download S51MO amp MKM 23 A APENDIX A CABLE FOR CONNECTION ETNC AND RIG RIG ETNC 13 5 VDC Power supply for RIG and ETNC 13 8VDC 6 7 8 ground 2 S meter 3 RX modulation 4 PTT 5 TX modulation 9 Data line option not used in this moment RX and TX modulation must be lead through high quality audio coaxial cable Ground on both sides of coaxial cables mus
10. e PC is used or to LAN HUB if more than one PC is used and home LAN network is made On the other side ETNC is connected to PSK radio station and fun can begins ETNC has additionally also something useful functions for tune and control all equipment The most useful is function PING for setting the station or aerial This function works without PC connected The ping packet is sending to the Internet radio amateur getaway and on display of ETNC is shown replay time and statistics of accepted answers This manual is written for users of ETNC For building and construction will be written technical manual Software which drives ETNC will continue develop Right so this manual For any new idea you can send me E mail on S51 mo Q hamradio si the newest version of the program can be download from http lea hamradio si s51mo download S51MO amp MKM 4 2 CONNECTION THE RADIO STATION TO THE ETNC ETNC is connected to radio station with DB9 nine wires cable conection 1 1 see appendix 1 TX and RX signal is lead through coaxial cable If this cable is well done length can be up to 20m but short cable is recommended 2 1 CONNECTION ETNC TO ONE PC WITHOUT LAN HUB ETNC can be connected to one PC computer with crossover UTP LAN RJ45 cable see appendix B The crossover cable is built with the transmit pins on one end of the cable connected to the receive data pins on the other end of the crossover cable and vice versa 2 2 CON
11. ically 6 3 FUNCTION INFO Function info is started with key info Display shows version of software and voltage of power supply Function is switched off with key menu or is automatically switched off after 30 minutes S51MO amp MKM 16 7 PROGRAMING ETNC WITH TELNET OR WITH TERMINAL In ETNC can be entered parameters with telnet program telnet session or with terminal program terminal session Both procedures are identical diference is only from connection and use of the program 7 1 PROGRAMMING WITH TERMINAL THROUGH RS232 For programming through RS232 any terminal program may be used ETNC is connected to PC with RS232 cable look appendix C On PC must run terminal program with settings 19200 8N1 Hardware control must be switched off and Xon Xoff control must be also switched off For help response word help ENTER or just ENTER is typed ETNC is answered with help text 19200 8N1 HyperTerminal Iof xi Datoteka Urejanje Pogled Klic Prenos Pomo HETNC h ETNC ukazi help h izpise ta tekst arp a izpise arp tabelo time t izpise koliko casa ze delujem listen 1 vklop izklop poslusanja na UDP 93 portu izpise nastavitve profile x p x izpise ali nastavi tekoci profil x info i izpise nekatere osnovne informacije HETNC h 72 PROGRAMMING WITH TELNET SESSION Every Windows program has simple telnet program Telnet is started from Start Run and type tel
12. iver Necessary 1s correctly configuring FLEXNET driver Only setting which is necessary is activating AXIP UDP driver From Flexnet Control Centre choose Tools Parameters With right key on mouse click on free channel for example 0 and choose New Driver Choose AXIP Write IP address from ETNC ETHERNET IP and click OK S51MO amp MKM 20 ASIP UDP Lonfiguralie General LIDP Part Destinations fi ns Destination 1 IP Address q2 158 U 20 Port Number 33 Cancel In WPP program my call sign must be written in file CONFIG WPP Line where my call sign is written looks like MyCall S51MO SSMO 1 SSIMO 2 S51MO 3 S51MO 4 10 1 TRAFFIC VIEW WITH FLEXNET AND WPP PROGRAM In lower side of WPP traffic can be viewed Traffic view function is switched on with key Isn on ETNC Traffic view is also switched on in ETNC display in the same time Traffic view on WPP can also be switched on through telnet program and function listen lt ENTER gt PF ein Windows Packet Programm B x Program Options Terminal Command TCP IP Tools Trace Monitor Help ES WwW SoS L J lt f las fF 9 S55YKU S LEA 15 12 522 zu JAOBBS g CEN us L 166 Ols de L EG a Ae ih qq S523YLJ x l 1 7 S55vKU 5 SSOLEA 15 12 85513 2010 gt 7 f S 5 SKU SEE 12 644 SSfFDX 2 S53 L ay 504 lt 0 0 gt 2 6 S50BOX S57FDX 3 1375 18 2 12 910 Upravlja DS SPEI r a r r y DENSIS S55YLJ 2 to E50CLX ctl I45
13. le of configuration of TRANSPARENT IP PROTOKOL in one computer AERIAL IP ADDRESS 44 150 1 145 GATEWAY 44 150 12 1 DNS 44 150 1 1 193 2 1 66 ETNC Configuration on ETNC ETHERNET NETWORK LOCAL ETHERNET IP 192 168 0 20 AX25 IP 44 150 1 145 GATEWAY IP 44 150 12 1 FLEXNET IP 44 150 1 145 UTP RJ45 CROSSOVER CABLE DESTINATION CALL S50SOU 0 MY CALL S 51MO 0 A DB9 1 1 CABLE DIGI 1 CALL S55YLJ 4 TX DELAY 0 5 msec H500 AERIAL CABLE TX TAIL 0 4 msec SLOT TIME 0 7 msec PERSISTANCE 0 75 S51MO amp MKM 9 4 AX25 PATH TO RADIO AMATEUR INTERNET GATEWAY RAIG Path to main Radio Amateur Internet Gateway shortly RAIG which we used must be set This path is set in the ETNC and it is compound from call sign of Radio Amateur Internet Gateway for instance SSOLEA my amateur call sign for instance S51MO and call signs of Supervozeljs digipiters through which we can make route to Radio Amateur Internet Gateway All call signs must have ssid the number which follow the call sign this is AX25 protocol Ssid of Radio Amateur Internet Gateway must be set to 0 for instance SS50LEA 0 also my amateur call sign must have ssid equal 0 for instance S51MO 0 At Supervozeljs call sign must be entered that ssid on which channel has Supervozelj connection to next Supervozelj or already to Radio Amateur Internet Gateway For instance if the route to the RAIG is through one Supervozelj a
14. nd Supervozelj has connection to RAIG on channel 4 then beside Supervozeljs call sign must be number 4 ssid is equal 4 So Supervozelj knows that packet arrived from ETNC must be send through channel 4 to RAIG It is possible to set ssid beside Supervozeljs call sign to 0 In this case Supervozelj automatically finds path to RAIG Component part of packet is also IP number of RAIG and our radio amateur IP All this data ETNC stores to every AX25 TCP IP packet which is send to the direction of RAIG 4 1 Example of configuration connection through one Supervozelj RAIG SSOBBB ETNC PC IP 44 150 8 1 CALL S51CCC IP 44 150 1 145 For this case following parameters must be set to ETNC AX25 IP 44 150 1 145 GATEWAY IP 44 150 8 1 DESTINATION CALL SS50BBB 0 MY CALL S51CCC 0 DIGI 1 CALL S55AAA 3 or S55AAA 0 DIGI 2 CALL left blank If in this case is written to DIGI 1 CALL SSAAA O ssid is equal zero Supervozelj himself can find path to the RAIG no mether when in Slovenian packet network is RAIG SSOBBB this path can be even through more Supervozeljs S51MO amp MKM 10 4 2 Example of configuration connection through two Supervozeljs SUPERVOZELJ SSSAAA SUPERVOZELJ S55DDD Connection to SSOBBB on ch 3 Connection do SSOAAA on ch 8 RAIG SSOBBB ETNC PC IP 44 150 8 1 CALL S51CCC IP 44 150 1 145 For this case following parameters must be set to ETNC AX25 IP 44 150 1 145 GATEWAY IP 44 150 8 1 DESTI
15. net In telnet Connection Far system is chosen Her IP number of ETNC must be entered the same IP number as is written on ETHERNET IP parameter After connection if help is typed ETNC answer with 192 168 0 20 janje Terminal Pomob Nn I QI S51MO amp MKM 17 8 SETTINGS OF IP ADDRESS IN PC COMPUTER On PC computer regular IP address gateway and DNS must be set Desktop is opened and Network is chosen Then choose that component part before which writes TCP IP gt name of your network card Select properties TCP IP properties window is opened gt 4 TCP IP lastnosti S ISDN Wan driver CAFI Protocal gt ISDN wan driver 3 NDISWAN gt ISDN Wan driver TEPAP gt D Link DFE 530TX PCI Fast Etherne TCP IP gt Gonilnik za omre je na klic 255 255 255 In IP address address of this PC computer must be written In gateway must be entered IP from ETNC the same IP is written in ETHERNET IP parameter WINS configuration must be disabled In DNS configuration at least IP from one nearest DNS server must be written TCP IP lastnosti SSIMO amp MKM 18 9 USE OF FTP PROGRAMS IN MANNER LOACAL PROTOCOL In activity of LOCAL PROTOCOL passive transfers must be switched on Here are some examples for different kind of FTP programs 91 WS FTP Choose Connect Advanced and switch on Passive transfers T y Program Fileas WS FTE Session lastnosti x E Leia ena G SE E EE complete ww
16. o and Supervozelj will automatically find RAIG in this case all next DIGI CALLs must left blank By pressed key menu next DIGI CALLs are reached DIGI 2 CALL DIGI 3 CALL If these calls are not used leave this entry blank To reach next parameter MENU key must be pressed In this step transmit delay parameter is set This parameter depends on type of RIG how fast can switch on transmitter To reach next parameter MENU key must be pressed In this step delay after transmit is set TX TAIL picture missing This parameter must be set to zero if first Supervozelj has new processor Motorola 68360 If this Supervozelj is older type with processor Motorola 68020 or Motorola 68010 then value of 0 6 msec or similar must be set to TX T AIL To reach next parameter MENU key must be pressed In this step slot time interval is set This is interval for check if channel is free for transmit if it is not then another time period of slot time is waiting before again check is performed To reach next parameter MENU key must be pressed S51MO amp MKM 14 In this step persistence is set can be value between 0 20 and 1 00 This is probability to perform transmit when channel is free for transmit To reach next parameter MENU key must be pressed In this step we can choose to write or divert parameters to flash memory 6 ADDITIONAL FUNCTIONS ON ETNC From basic state few additional functions is reached The most useful is
17. pid FQ 733 11 04 43 tm SS LEA to SSOPIL 5 via 555YLI JY S5SVKU 5 ctl UIA pid CC 44 11 04 49 Ji It zt aa 4 T E 2 a E O Fm S55YL1 to SS KIK l cti 1404 pid FO J C255 11 04 mo E 0 fm S55YLJ to S56K2JK l ctl I42 pid FO 255 11 04 49 B S51MO amp MKM 2 11 WRITE NEW VERSION OF SOFTWARE TO ETNC If it is find out that on http lea hamradio si s5 1mo new version of software is loaded very easy our ETNC can be updated with this new version ETNC and PC computer must be connected with RS232 cable look appendix C From http lea hamradio si s5 1mo download ETNC all folder ETNC must be downloaded including folder LIB and two files inside them All this files must be stored to CAETNC With start FWFR_100 EXE follow window is opened Following parameters must be set CPU MB91F109 Speed 4MHz Write File c etnc ETNC_Vxxx MHX where xxx is version number COM PORT must be the same as ETNC is connected Be careful that no other program occupy the same COM port On ETNC bridges must be set J1 to left J2 to left J3 to right JS to left All this operation must be done at ETNC switched off MNS es SUEDE T 8 IND I9L0Tds e i EIE soe ELTA T TREE Or Wi o zu PE ae LE eS ey a PTW LSI 1816 QFP 16k IHH T 1I ui 18k li HA II Picture 1 Settings of the bridges at writing software to ETNC S51MO
18. t be connected to pin 6 7 and 8 SSIMO amp MKM 24 B APENDIX B RJ45 UTP AND CROSSOVER RJ45 UTP CABLE LAN 10M and LAN 100M TWISTED PAIR uses for connection UTP cable with RJ45 connectors on each side see picture 3 Two twisted pair are used one for transfer data from one point to other and one for transfer data to opposite direction On ETNC is transmitting twisted pair on pin and 2 receiving twisted pair on pin 3 and 6 Different situation is on HUB or SWITCH where transmitting twisted pair is on pin 3 and 6 receiving twisted pair is on pin and 2 If ETNC is connected to HUB cable 1 1 is needed Pin 1 Pin 1 Pin 2 Pin 2 Pin 3 Pin 3 RJ 45 RJ 45 UTP RJ45 cable for connection PC and HUB or ETNC and HUB For connection ETNC directly to PC computer crossover cable is needed Pin1TD O O Pin 1 TD O Pin 2 TD Pin 2 TD O O Pin3 RD Pin3 RD O Pin6 RD Q QO Pin6 RD UTP RJ45 crossover cable for connection PC and ETNC S51MO amp MKM 25 Picture 3 RJ45 C APENDIX C RS232 CABLE FOR CONNECTION ETNC AND PC PC ETNC S51MO amp MKM 26
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