Hardware-User-Manual for the 16 bit High Speed
Contents
1. non E ci DI 0606 Sep L O o E eae d a X CIS H WT mim on VC H gt VR Te p aed WR DW IS WW va Sun 1 dl IS nn mo BIR ie Ee E wm RH mu El ITER s ng Wu Ve RT CH H Wun wae Eu HIT E bu D C gt SW C E E dh 2 m m m j A j S mE m a a S E DW DW DW i Son E E E E 7 Hm rn sen E A lm S a Ss gn ot OL e sl Je WW E e E mm un I o aa E a 5 om Ch E a BAX j Mu oe El Sien A E E saa E WH ron e m m e NI 8 CIA E e 0 me rm AM a mun d emp m je d mu a Si e 2 8 Ss ZS E 0 d Se gt d aja S E Si E E Cp SI jm m m m m Se COUCHE m m m m sale m m uE E m E C le E E E m SES m E u E m H m Ty ef u E m qm C z a je a E wb mn a a a a E a E m E o iw IS Hm un d ID E E BW SW Ze E 0 gin je z e Ah E z D m m E m m lag E m a E ES aa es TNC3S Hardware m Hr Page 14 COPYRIGHT ON TNC HARD AND SOFTWARE The basis for all programs running on the TNC3 is the TNC3 Betriebssystem operatin2. is new est Check the Internet www page http symek com for more information Please be very careful when changing the EPROMs not to bend the IC pins Before inserting the ICs into the sockets make sure they match exactly the socket pins otherwise it could happen that a pin gets bent and has no proper connection Schematics TNC3 K Digital part Lt 000 D D7 oo TNC3S Hardware Page 11 Schematics TNC3S K Modem Interface E e e e ep px y WEE EEE BEEN E z l L ww Ek A 6 0 6 6 O 47k MCS6 7k MCS4 lt MCSS Zk MCSI 7k MCSA e Lk MCS3 TNC3S Hardware Page 12 Schematics TNC3S K Clock Battery Address Decoder see Y Big a a K K K K ie Dl lt yt SR gt EN o la l a N Y TNC3S Hardware Page 13 Component Location TNC3S K H 4 HI SON DA a HH vm Lie Un Vu i E E TUN AN JON 2a asa we em nu nm E SS SS BH H D m i r be Mie P W na vr TI b es i y C S WW DR el s dh m gt m E e m nro Sa F D En Wu uu men d u Hj D x an e i En 1 V Til e 3 d i 7 CH u apm H 0 E
3. settings 7 dip switches 3 DIP Switches 6 eprom size 8 eproms new 10 filter 10 getting started 3 grounding the case 10 Hayes 8 Hayes mode AT 8 high speed bus 8 IBM compatibles 4 interface 3 interference rf 10 jumpers 8 LED display 2 TNC3 Hardware Manual Production and distribution Address D 70597 Stuttgart Sonnenberg Phone 49 711 76 78 923 eMail info symek com TNC3S Hardware pc board version K SYMEK GmbH Datentechnik Fax 49 711 76 78 924 LEDs 6 literature 15 loudspeaker 3 low power mode 10 microphone 3 mikroprocessor 2 modem interface 2 modifications 8 modulator 3 NRZ NRZI coding 6 power supply 2 3 printed board version 2 PTT 6 PTT LED 7 push to talk 3 radio connection 3 ram size 9 reset 4 8 rf interference 10 RSKISS 8 RXC 6 RXD 6 schematics TNC3S 11 serial cable 3 SixPack 8 SMACK 8 software autostart 8 software selection 3 STA LED 6 Start to use the TNC3 3 switches 6 SYSTEST 8 terminal baudrate 7 TNC2S und TNC2H 10 total reset 4 Turbo Firmware 8 TXC 6 TXD 6 Update 10 Vanessa 6 TNC3HARD G Internet homepage issue 18 Nov 1999 Ulf Kumm DK9SJ Germany Johannes Kramer StraRe 34 Hotline 49 711 76 54 911 http symek com
4. 10 J 11 Default closed Connect RS232 to modem port 0 when closed Open when a third modem or the High Speed Bus is to be connected to port 0 ST3 Connector for a third modem or a High Speed Bus hardware LED4 this LED is for test purposes only and is not visible with case closed It must not light during normal operation If it lights the program does not run properly TNC3S Hardware Page 9 Set up for combined 1200 9600 Baud Digipeater There exists digipeaters which utilise e g combined 9600 1200 Baud user access When utilising such digipeaters it is necessary to see the digipeater busy if either the one or the other baud rate is transmitted at one moment The DCD carrier detect outputs and inputs of the modems can be easily coupled together by hardware modification and allow the operation with combined digipeaters Watch the description in the appropriate modem manuals DCD outputs of other TNC e g TNC2H may be connected in a similar way With diodes it is possible to wire or the DCD signals in such a way that the one modem locks the other but not vice versa The current software of the TNC3 makes the DCD transmitter locking more simple by setting the db parameter this could be done without opening the TNC3 case Grounding the TNC3 Case The case has no direct connection to the circuit If this would be desired solder a bare wire to a ground ing pin on the TNC3 PCB board and pinch it between side extrusion and rea
5. 80 ns or faster AA PTC 55256 eare x x x standard size TC 55256 128 KB x x x no supported size 2 TC551001 2 D431000 256kB x x x option 256 k recomm d LC TC551001 4 D431000 512kB x x x loption 512k 2 TC554001 2 KM684000_ 1MB_ x x x option 1 MRAM 4 70554001 4 KM684000_ 2MB_ x x x Joption 2MRAM jumper installed x no jumper installed Pins for special applications If necessary some signals may be tapped on the TNC3S board To access these signals we recom mend to solder square pins to the pads and connect with a standard 2 54 mm ribbon connector The fol lowing signals may be accessed lower Data Bus DO B23 D1 B7 D2 B8 D3 B10 D4 B9 D5 B22 D6 B6 D7 B21 Part of Address Bus A1 B5 A2 B4 A3 B3 A4 B2 Programmable Chipselect CPU Pin 124 CS3 B24 Power Supply GND B25 5 Volt B26 Aux Output CPU Pin 76 BRG B27 Sub D Connector Access to HS Bus Pins 16 H CTS B13 18 H DAT B15 15 H CLK B14 17 H RTS B16 8 DCD B18 6 20 DSR DTR B17 Other Jumpers and special parts J12 Default open for future use erase autostart file at power on J13 Default closed for future use DIP switch disable jumper J14 Default closed Disconnect the 5 volt power supply e g when using a 7805 regulator U15 a standard LM7805 voltage regulator may be installed here Open J14 or remove U14 R44 Default open for future use J
6. All connected instruments PC radio power supply must have a shielded and grounded case In case of unapropriate shielding and cabling the strong electromagnetic fields of high power radio transmitters may cause malfunction of the TNC31 The TNC complies with EMC rules only if it is in ist original state and not modified in any way The opera tion of the TNC31 requires technical knowledge as e g radio amateur license The TNC31 is supplied with 12 volt DC power The user has to make sure to use apropriate power sup plies which comply with the corresponding safety regulations UPDATES NEW EPROMS If you like to receive the most recent version of TNC3 EPROMs just call us and ask which issue is new est Check the Internet www page http symek com for more information COPYRIGHT ON TNC HARD AND SOFTWARE The basis for all programs running on the TNC3 is the TNC3 Betriebssystem operating system For those programs there exists copyright to Joachim Scherer all other rights board layout and schematics belong to SYMEK GmbH or to Ing Buro Kumm Stuttgart The content of this manual may be published and spread as long as there is a indication of the source It is our aim to give a fresh impetus to packet radio and to inspire as many radio amateurs on this fascinat ing subject as possible TNC3S Hardware Page 10 Updates new EPROMs If you like to receive the most recent version of TNC3 EPROMs just call us and ask which issue
7. CON 1 STA 2 CON 2 Modem LEDs Microprocessor CPU Motorola MC 68302 15 MHz in 132 pin SMD case with microprogrammable on chip RISC Proces TNC3S Hardware Page 2 sor for data communication internal data bus 6 DMA channels programmable chip select outputs 24 Bit address 16 Bit data bus Program memory Flash EPROM 16 Bit wide Standard 256 Kbytes Flash EPROM 256 kByte UV EPROMs can be used as well Data memory CMOS RAM battery buffered 16 Bit wide 64 Kbytes up to 2 Mbytes standard 64 Kbytes recommended min 256 Kbytes RTC real time clock Battery buffered year month day hour minute second DIP switches 8 pins for selection of software options Autostart and baud rate Reset and Watchdog MAX 818 supervisory circuit with software trigged watchdog Battery 3 v lithium battery with automatic switchover by MAX818 GETTING STARTED You are already familiar with TNC and packet radio This page will give you all necessary information to start using your TNC3 Power Supply 12 volt 8 30 volt max ca 150 mA Connector 5 mm Positive inner negative outer contact Computer connection Interface RS232 via a standard serial cable 1 1 25 pin male connector to TNC 25 or 9 pin female connector to PC Baud rate can be pre set with dip switches 1 2 and 3 swi sw2 sw3 Baud SW 4 SW 2 SW3 kBaud Other baudrates may be set with the command rsconf See software manual only with specia
8. E D D n dl gt Ae Aaa esas Jumpers in TNC3 Modifications The solder jumpers for selecting the different memory options can be found at the front edge right of the Power LED before the Lower EPROM socket Open the case by removing the front completely The jumpers are 9 pairs of solder eyes which can be closed easily by soldering the two halves together with a tiny drop of solder To open the connection it is best to turn the board upside down and let the solder flow on the soldering iron tip Vacuum desoldering equipment or other unsoldering methods may be used as well If you are not familiar with such you should consult a specialist for help All normal precautions which are usual when working with electronic circuits like the TNC3 should be observed carefully valid for printed circuit board revision TNC3S K m mm Location of the programming jumpers J1 to J9 for configuration of memory Memory chips and modules Jumpers J2 J3 J5 and J6 EPROM size Different sizes of EPROM may be used with TNC3 but the 27C010 EPROMs are standard The Jumpers are factory set for these types 1 M Bit 128 k Byte per Chip 256 k Byte for a pair of EPROM and for the matching Flash EPROMs of the same size AMD 29F010 For use of other EPROM sizes the copper traces of J5 and J2 have to be cut and the Jumpers have to be set according the following tabl
9. NC Power Supply of the modems by the TNC 5 Reset Reset from to TNC both directions Ground low reset AF carrier detect from Modem to TNC 8 Ground Span Transmitter clear to send from modem to TNC RxD and TxD are NRZI coded NRZ and NRZI Coding The AFSK modem e g transmits one of two possible sine wave tones With packet radio the changing of one tone to the other represents the transmission of a logical 1 HI If a 0 LO is to be transmitted the tone remains unchanged With this way of encoding NRZI it makes no difference which tone is transmitted Important is only the fact that the tones changes The former TNC2 however generates at its modem interface not this NRZI Signal but the digital data stream itself So all TNC2 modems have a flip flop for transmitter and receiver which take care of this NRZ NRZI translation The TNC3 generates already the NRZI signals there is no need to make any NRZ NRZI translation within the modem circuit In simple e g AFSK modems you may feed the data signal before or behind the corresponding flip flop generally a 74HC107 is used for that With DF9IC derived FSK G3RUH modems the NRZ NRZI translation is done by the T and R GALs Whether these modems generate use NRZ or NRZI data depends only on the contents of these two GALs Special Interfaces Modems For modem development a breadboard PCB is available 80 x 120 mm which fits exactly in the TNC3 modem
10. S AS M E K Datensysteme und Elektronik GmbH Hardware User Manual for the 16 bit High Speed Packet Radio Controller TNC3S Printed 09 11 02 17 40 T3HARD G SYMEK Datensysteme u Elektronik GmbH Ulf Kumm DK9SJ D 70597 Stuttgart Joh Kramer Str 34 Phone 49 711 76 78 923 Fax 76 78 924 Hotline 76 54 911 http symek com info symek com Table of contents PREFAGE cuida aia 2 TECHNICAL DATA TNC3S 2555551554 k an rana aa ea dhana aa anga anaa anana deadhan anganan aku ena ana gagan 2 GETTING STARTE Dh iii 3 CONNECTING OF TNC3S TO IBM COMPATIBLES DCH 4 Interface Cable TNC P Catia 4 EE 4 TOTAL RESELWITH TNCIS 10d li ee Giana ee 5 POWER SUPPLY OF TNGS EE 5 CONNECTING THE RADIO TO TNCH EEN 5 INSTALLATION OF A MODEM BOARD een 5 MODEM INTERFACE CONNECTION OF OTHER MODEMS ssssnsssnissssssnrrirresrsrrrnrresssrnrrrresssrnrerens 6 Digital Interface OModem Disconngect Conector nean eaaa aana ne rererere seres 6 Pin Assignment Modem Disconnect asane aane nenen n anaa nr 6 EE 6 SPECIAL INTERFACES MODEMS ococcoocococcccconcnnnononcnncnncnnnnnnnonncnncnnnnnnnnnnnnncnnnnnnnnnnnnn agan anae aranan 7 MEANING OF DIP SWITCHES AND LIGHT EMITTING DIODES cccccccoconoconccoccnocanononcnnnnnnnnnanancnncnnn 7 Light emitting Diodes LEDS ccccccccccescsceseesceeeceetesece sees cecacecaeecseeeseenseeeeeeseeeseeeaeenaeenas 7 Setting of the 8 DIP SWitches ccccccccccccseesseesseesceseeeeceecesecesecsecaeeaceeseecseenseeeseeeseese
11. T DL e V Radio Amateur Satellite Corporation Holderstrauch 10 35041 Marburg Construction and operation of amateur radio satellites very interesting technical journal on amateur radio satellites AMSAT DL Journal Distribution of software etc for operation via satellite http www amsat dl org or http www amsat org amsat International branch South Midlands Communications Ltd SM House School Close Chandlers Ford Industrial Estate GB Eastleigh Hampshire SO534BY UK Former Siskin electronics Phil Bridges Dealer in UK for SYMEK TNC INFRACOM Eric Bertrem F5PJE 69 Boulevard Albert 1er F 44600 Saint Nazaire Amateur radio and distributor for SYMEK TNC in France http www infracom fr com Swiss ARTG Amateur Radio Teletype Group Beat Baumann HB9MPA Sunneb hlstr 15 CH 8604 Volketswil Society for digital amateur radio operating modes in Switzerland Ordering SYMEK TNCs via Swiss ARTG is possible http www swiss artg ch DemoTech Jan Hynneke Ellerkjaervej 2 DK 7600 Struer Denmark http demotech dk TNC3S Hardware Page 15 INDEX 6Pack 8 addresses 15 ampack Bayerne V 15 autostart software 8 Autostart Software 3 battery 3 books on packet radio 15 bus interface 2 cable for PC A combined digipeater 10 component location 14 computer connection 3 computer interface 2 CON LED 6 connecting the computer 4 Copyright 15 CTS 6 DCD 6 DCD LED 7 demodulator 3 dimensions 2 din connector 3 DIP switch
12. ains valid even when the software has been changed So keep it and replace only the software manual when updating the programs in Flash EPROM UE Kus S 18 Aug 2000 Ulf Kumm DK9SJ WEE Important The information in this manual is valid only for printed circuit board version K TECHNICAL DATA TNC3S VALID FOR PCB VERSION K MANUFACTURED FROM MID 1997 Power Supply 12 v DC min 8 0 V max 30 V typ 65 mA Values without modems at 12 v Internal supply voltage 5 v switchmode regulator MAX831 Dimensions ca B 175 T 130 H 42 mm masse ca 600 gram Computer Interface RS232 10 v signals 25 pin Sub D female connector Baud rate 1200 2400 4800 9600 Baud 19 2 38 4 57 6 115 2 kbaud 230 2 kbaud Parity none word length 8 Bit may be altered by software settings Output Data out Pin 3 Input Data in Pin 2 no hardware handshake Modem Interface 1 2 optional 3 interfaces if RS232 is omitted CMOS level 5 volt TXData TXClock RXData RXClock RTS CTS DCD 5 volt reset ground The TNC3 is able to deliver up to 350mA supply current for both modems Connection to the TNC3 motherboard via 20 pin connectors and a 20 wire ribbon cable 2 modem boards 120x80mm each may be built in Bus Interface optional The processor data bus DO to D7 and the address A1 to A4 and a programmable chip select are available on separate solder pins for special extensions LED Display Power 5 Volt STA 1
13. ar exactly behind the access holes in the rear panel Now close the TNC3 case again Make sure that the LED s fit exactly in the front panel holes With the system test program you should check if the TNC recognises the built in modem properly If all is ok connect the radio to the modem Note As the modems are built in top side down the DIP switches are enumerated in the opposite way to the DIP switches of the TNC3 main board Modem Interface Connection of other Modems Digital Interface Modem Disconnect Connector The Modems are connected to the TNC3S main board with a 20 wire ribbon cable The cables are sup plied with the main boards not with the modems TNC3S Hardware Page 5 If you intend to connect another modem with an HDLC interface e g Vanessa board RMNC or special modems a longer cable may be used and the modem may be mounted externally The cable length is not critical but the radio interference EMI may become worse when using longer unshielded connec tions The pin assignment of the modem disconnect cable is the same as recommended by DF9IC high speed modems All even numbered pins are connected to ground which gives a good shielding effect The digital signals use CMOS TTL levels 0 5 Volt the modems are supplied with 5 V DC via the 20 pin connection rating max 300 mA for both modems Pin Assignment Modem Disconnect Pin Signal Function_______ Pin Signal Power Supply of the modems by the T
14. ata has to be erased from CMOS RAM of TNC3 set the DIP switches to 31 and con nect supply power for some seconds After that all data is erased and you can go back to normal DIP switch setting As long as the switches are on 31 there is no normal operation possible The HALT LED inside the TNC will blink with every reset If you have updated the TNC3 software or if you cannot access the TNC3 a reset is necessary TNC3S Hardware Page 4 BAND E DIP 31 Reset routine you should back up the data stored in RAM on a disc before erasing So you may restore it later Power Supply of TNC3 The TNC3S is supplied with direct current DC The current drain is about 75 to 200 mA at 13 Volt the TNC needs a supply voltage in the range of 8 Volt but not exceeding 30 Volt Simple power supply jacks may be sufficient but make sure that the No load voltage is always less than 30 Volt The best is to supply the TNC3 from a regulated 12 or 13 5 Volt supply as used for radio transmitters etc In most cases such a supply is available in every amateur station If the supply voltage is too low the microprocessor will not start properly Check the supply voltage to make sure it is within the limits The power drain depends on the supply voltage The higher the voltage the lower the current But the power consumption of the TNC depends also on the software which runs on the processor The e g Turbo Firmware utilises the low power mode of the 68302
15. e TNC3S Hardware Page 8 27 C 256 64 kByte x x very small memory 27 C 512 128 kByte x xls 27C1001_ 256 kByte x x standard size default AM29F010_ 256kByte x x Flash EPROM 27C2001 512kByte Ile 27 C 4001 1 MByte x x maximum EPROM size jumper installed x no jumper installed Jumper J1 J4 J7 J8 and J9 RAN size Different sizes of CMOS RAM types may be used with TNC3S Depending on the size the jumpers have to be set The sockets for the RAM IC have 32 pins Smaller RAMs however have 28 pins only Insert the IC in a way that pin 16 of the socket pointing in direction of the processor matches pin 14 of the ICs Socket pins 1 2 31 and 32 pointing towards edge remain free There have been memory modules on the market which had the same pinning and function as 4 M Bit CMOS RAMs but contain four 1 M Bit chips on a carrier board It is recommended to use the modern monolithic IC now because of the larger height of the older modules and the higher standby current which reduces the life of the Li battery RAMs of any manufacturers may be used The RAMS are called Static CMOS RAM the case is a Stan dard 600 mil Dual In Line Package they are organised Byte wise e g 128k x 8 Bit and they should have a low standby current Suffix L or LP The access time is not critical 100 ns would be fast enough but all the RAMs have access times of
16. g system For those programs there exists copyright to Joachim Scherer all other rights board layout and schematics belong to SYMEK GmbH or to Ing B ro Kumm Stuttgart The content of this manual may be published and spread as long as there is a indication of the source It is our aim to give a fresh impetus to packet radio and to inspire as many radio amateurs on this fascinat ing subject as possible The TNC3S meets the electromagnetic compatibility regulations EMVG when operated as directed and has the CE sign It is intended to be used with amateur radio or cb radio equipment and needs no special permission to be operated We are not liable for any damage or injury caused by use of our products or by wrong information in the manuals ADDRESSES AND LITERATURE Packet Radio digitale Betriebstechnik Gunter Grunfeld DL6YCL ca 420 pages German language Everything on Packet Radio modems digipeater satellites etc Highly recommended present day infor mation DARC Verlag ISBN 3 88692 017 1 in bookshops and via DARC Verlag connect newspaper of ampack Bayern and Nord gt lt Link e V 4 issues per year for members Contents Packet Radio and specific information on amateur radio http www nordlink org FUNK monthly journal vth Verlag Baden Baden Special issue on Packet Radio available ADACOM unabhangiger Fachverband fur den Amateur Datenfunk e V Kaiserstr 31 76351 Linken heim 4 issues of ADACOM magazine AMSA
17. l RS232 driver IC installed Software selection DIP Switches 4 8 e e ee Kg ole allie of DIP switch Le Ce UDIP 6 SYSTEST German 1 DIP 7 SYSTESTG English UDIP 8 RSKISS Kissmode A DIP 9 TNC3BOX English UDIP 10 TNC3 mailbox German A DIP 11 TurboFirmware Hayes Mode ft DIP 31 totalreset erase RAM The list may vary depending on the programs used See software manual Connection of the Radio Connection identical to other TNC with a 5 pin DIN connector See the specific modem manuals Pin Name Function radio connection pin microphone modulator output of the TNC audio ground 0 volt screen push to talk key closes to ground when transmitting SPKR loudspeaker demodulator audio input of TNC Start Connect everything radio computer power start PC program ready TNC3S Hardware Page 3 Note All timer settings are given in ms milliseconds with TNC3 e g TX Delay 250 ms Problems Normally there should be no problem so far If anything does not run as expected you should go on reading the manuals for specific information on TNC3 operation Connecting of TNC3S to IBM compatibles PC Interface cable TNC PC The PC are available with a 25 pin male connector standard for COM2 or with 9 pin male connectors COM 1 and most modern PC after 1998 You need a 25 pin or 9 pin sub d female connector for the computer and a 25 pin male
18. microprocessor and saves a lot of current The built in modems consume a significant part of the total sup ply current see the data of the modems The MAX831 switch mode regulator may be replaced by a serial regulator Microprocessor of TNC3S type like LM7805 which is cooled by fixing it to the right side of the alu minium case CONNECTING THE RADIO TO TNC3 The connection of the receiver and transmitter is explained in detail in the manuals of the modems In general the radio is connected by a 5 pin DIN connector with the following pinning Pin 1 MIC af input of radio output of TNC Pin 2 GND Ground Pin 3 PTT ptt transmit switch closed to ground Pin 4 SPK af output of the radio receiver Pin 5 not used see modem manual View to solder side of plug Important the five pins are not numerated in row You find tiny figures on the black insulating body of the plug INSTALLATION OF A MODEM BOARD First read the manual which is supplied with the modem There are sometimes configurations necessary which can be done only before the modem is installed and all parts of the modem are accessible Disconnect the TNC3 from the supply Remove the TNC3 front panel 4 screws and pull the top panel fully towards you After installing the 20 pin ribbon connector to the modem correctly fasten the modem top side down on the 4 or only 2 hex bolt spacers with M3 screws The DIN receptacle and the controls trimmers switches must appe
19. r panel RF Interference All inputs and outputs of the TNC31 are bypassed with a R C R or L C L filter to suppress RF interfer ence The board has solid ground areas which results in very efficient screening against unwanted ra diation If the TNC and the receiver antenna are too close it might be that the reception will be disturbed by the clock frequencies of the TNC In that case ground the case first and check if the interference is still present In many cases the interference is not caused by the TNC but by any other digital equipment computer nearby and are transferred by the cables between computer and TNC to the radio receiver Interference usually affects the 144 MHz band or lower frequencies In low power mode see Turbo Firmware the remaining radiation is significantly reduced by the slower clock of the processor The TNC31 meets the German regulations for the electromagnetic compatibility EMVG and is CE approved The emission levels are in the range between 150 kHz and 30 MHz at typically 50 dBuV ac cepted are 60 dBuV the emission field strength between 30 MHz to 1 GHz is about 20 dB below the CE limits 40 45 dBuV m The CE sign on the TNC31 certifies that the instrument complies with the European regulations for elec tromagnetic compatibility Prerequisite is the proper operation according the following rules All connections have to use shielded cables The shield must be connected to ground or minus supply
20. seeeeaes 7 JUMPERS IN TNC3 MODIFICATIONS occccccccococcncnncncononoconnnnnnnnnonnnnnnencnnononnnnnnoncnnononnrancnnanenaninnan 8 Jumpers J2 J3 J5 and J6 EPROM size 9 Jumper J1 J4 J7 J8 and J9 RAM size 9 Pins for special appheati ons ss ss repa ae ka ra WASAN KEN a We pa Ga Ng Ka Wa Ga PN Ge peng sa aa eaaa 9 Other Jumpers and special porte 10 Set up for combined 1200 9600 Roud Dieimegter sene eenwa awane anane nane reee 10 Grounding the TNC3 Case 10 Tee e ee ee ee ees 10 UPDATES NEW EPROMS cutis AA ee 11 SCHEMATICS TNC3 K DIGITAL Pap 12 SCHEMATICS TNC3S K MOoDEM INTEREACEL cnn r non nn rra n nr nane anae 13 SCHEMATICS TNC3S K CLOCK BATTERY ADDRESS DECODER ccocococccccccccncononcncnonccnnnnanonoos 14 COMPONENT LOCATION TNC3S K cooococccccococonocononcnononnnccnnnnnnnnnnnnrnnnnnnnnnnnn anae nr rr nantan nnen nnn 15 COPYRIGHT ON TNC HARD AND SOFTWARE coocooccoccccccccoccconnoncnncnncnanananonnns 16 ADDRESSES AND LITERATURE 440000n ar nnananan anan annana anane nananananan an anananananen 16 PREFACE The expression packet radio appeared first in 1982 From the first experiments a world wide data net for amateur radio has been developed Meanwhile packet radio has become one of the most important operating modes The reason therefore is that packet radio is not only used by amateurs with a special interest on digital operating modes but also by a increasing number of amateurs who prefer packet radio as a ver
21. slot Meaning of DIP Switches and Light Emitting Diodes On the front panel there are 5 LED s on the rear panel you find 8 DIP switches on the TNC3S main board this is the lower board for programming the terminal baud rate and selecting the software options Light emitting Diodes LEDs The PWR LED yellow This LED is operated by the regulated 5 V of the TNC whenever the supply voltage is connected The CON LED Channel 1 and 2 green This LED is controlled by software and may have different meanings dependant of the selected software When using Turbo Firmware or TF it means there is a connect at the selected radio channel The STA LED Channel 1 and 2 red TNC3S Hardware Page 6 This LED is controlled by software and may have different meanings dependent on the selected soft ware When using Turbo Firmware or TF it means the TNC has data in its receive buffers which has not been transferred to the computer With the TNC3BOX software flashing STA LEDs mean Mail for the box operator arrived To cancel flashing read and erase the mail The DCD LED of the Modems yellow This LED will light whenever the modem recognises the radio channel busy see also the modem man ual The PTT LED of the Modems red This LED shows if the transmitter is keyed see also the modem manual Setting of the 8 DIP Switches The levers of the DIP switches may be switched by a pointed object do not use pencil or ball pen off le
22. sub d connector for the TNC Many PC use a 9 pin connector as COM1 for the mouse connection and a 25 pin for COM2 The TNC3 uses in normal operation only the signals TxD and RxD pins 2 and 3 With some PC it can be necessary depending on software to wire the hardware handshake connect pin 4 5 and the pins 6 8 20 This is required e g when the TNC is to be addressed as a modem using Windows 95 Here the circuit for a serial cable with 25 pin or 9 pin female connector Pins for 9 pin connectors in brackets Connections in parenthesis may be omitted male cont PC female cable male cable female TNC Pin 8 Pin 1 gt pink gt Pin 8 Pin 3 Pin 2 gt brown gt Pin 3 Pin 2 Pin 3 gt green gt Pin 2 Pin 20 Pin 4 gt grey gt Pin 20 Pin 7 Pin 5 gt white gt Pin 7 Pin 6 Pin 6 gt blue gt Pin 6 Pin 4 Pin 7 gt yellow gt Pin 4 Pin 5 Pin 8 gt 1 d gt Pin 5 Interface setting The TNC normally uses the following settings 19200 Bitslcharacter_ 8 How to define these settings depends on your specific PC software Normally the parameters are filled in in a menu or configuration file and set automatically at restart of the program TNC3S with modems without case Total reset with TNC3S If absolutely all d
23. ver up or on lever down As these switches close to ground a open switch means a logic 1 HI closed switches represent a 0 LO In the following list the levers are represented by arrows 1 Switch up open logic 1 y Switch down closed logic 0 x don t care Switches 1 2 and 3 Terminal Baudrate with these switches the baud rate for the communication between TNC and computer may be selected 1 2 3 4 5s 6e 7 8 terminal baudrate terminal baud rate 230400 Baud with MAX221 ES Pit Po Pa e i a emine baudra 384 Bad f x terminal baud rate 57 6 kBaud aba pp terminal baud rate 115 2 KBaud ory setting is 19 2 kBaud The fac gt TNC3S Hardware Page 7 Switches 4 to 8 Autostart Program With these switches you may select the software in EPROM or RAM which is started automatically at power on A El UU UU Y DIP A Turbo Firmware Default ODC LU DIP 3 MU LY DIP a o DIP 6 SYSTEST system and modem test program DIP 7 HSKISS Mode for high speed bus lt gt Y Y Y Y px x x Dg x x x pE Px x x PU KH x x x J tT x x x JU 1 Px x x PU Px x DE lx xx x lt lt ft 1 Pc fc ft ft Positions of the s pointing up gt gt gt lt gt gt gt gt 8 for programs DIP 16 to DIP 31 correspond to DIP 0 to 15 but with switch A gt gt gt CELE E E
24. y useful tool for information interchange and spreading all kinds of news regarding all fields of the hobby To be up to date as a radio amateur it is important to read the mailboxes occasionally To write a short memo to a friend there is nothing better as to write a mail via packet radio While lying in wait for a rare short wave dx station it is necessary to have access to a packet dx cluster Until 1992 the TNC2 series of packet radio controllers with the 8 bit 280 processor had been standard The demand for higher speed and smarter software lead to the development of the TNC3S by the stu dents Joachim Scherer DL1GJI and Roland Alber DG8GAD The final layout for series production and the modem design was added by Ulf Kumm DK9SJ with the SYMEK company With the TNC3S you own a device which represents the top of today s packet radio technology It is suited for operating a user s standard packet station as well as for special applications as digipeater mailbox tnc high speed controller etc The manual will help you to use the hardware of TNC3S About connecting the radio please refer to the manuals supplied with the modems for information on the software please use the software manual supplied with the TNC or with the updates If there are problems to set up and operate the TNC3 please read this manual carefully If your problem cannot be solved with the manual ask your dealer for help This hardware manual supplied with your TNC rem
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