BOM for Grayscale PC Assembly P/N | Epson MFJ-1278B specification

MFJ-1278B MULTI-MODE		APPENDIX I PARTS LIST
MFJ P/N	Descrpition	Component ID
205-1210	.1 UF, Z5U, 20%	C209
	MONOLITHIC CAPACITOR
625-0182	18-PIN IC SOCKET	U204, U205
625-0291	20-PIN IC SOCKET	U202, U203
311-1056	LM3914N, BAR GRAPH DISPLAY	U204, U205
	DRIVER
320-2010	MV57164, 10 SEG. BAR GRAPH.	U202, U203
	DISPLAY, RED, GI OR LTA-1000P
	OR EQUAL
861-1274-2	PC BOARD FOR 50-1274-2
620-6108	8-COND. RIBBON JUMPER CABLE
735-1128	RIGHT ANGLE BRACKET FOR MOUNTING
	DISPLAY PCB

BOM for Grayscale PC Assembly: P/N: 50-1278-3

RESISTORS: 1/8W, 1%

102-3215	2.15K	R301
102-3113	1.13 K	R302
102-0604	604 ohm	R303
102-3301	3.01 K	R304
102-3158	1.58 K	R305
102-0845	845 Ohm	R306
102-4137	13.7 K	R308

Trimpot: 15 Turns, Bourns or Equal

Image 382

Epson MFJ-1278B manual BOM for Grayscale PC Assembly P/N, Resistors 1/8W, 1%, Trimpot 15 Turns, Bourns or Equal

Contents

Table of Contents FSK Connection Getting Started Connect Slow Scan Television Operation Navtex OperationFAX Operation Advanced Packet Operation 125 External Modem Interface Connector J14 MFJ-1278B SpecificationsMULTI-LEVEL Interface CONNECTOR,J13 HF Tuning Indicator Command Summary CW Modem TUNE-UP ProcedureBPS Packet Setup MFJ-1278B/1278BT Parts List MFJ-1278B MULTI-MODE Table of Contents MFJ-1278B MULTI-MODE Introduction MFJ-1278B MULTI-MODE Introduction Items supplied with MFJ-1278B/MFJ-1278BT package MFJ-48BE MFJ-1278B MULTI-MODE Computer Interfacing MFJ Starter Packs Serial port signals required by MFJ-1278B Serial Port SignalsPin Signal Name Description Manufacturer Model Macintosh MFJ-1278B Pin DB-25P DB-9P Computer with Specific Serial InterfacesApple Macintosh Hsko Hski Commodore C64, C128 and VIC-20 IBM PCjr IBM PC/XT/AT/386/486 and compatibles Computer Radio Shack Color ComputerColor Computers Color Computer DB-25P Other Computers with Nonstandard Serial Ports MFJ-1278B RS-232C Computer RS-232C Compatibility Terminal Apple II, II+, IIe, IIcMacTerm Parameters for MFJ-1278B IBM and Compatible Computers Pin # Mnemonic Name MFJ-1278B Serial Port PIN FunctionsRadio Shack Model 100/102 and NEC RS-232C Pin Designations Computer Baud Rate Autobaud Changing Terminal Baud Rate BbRAMLOAD with Defaults a MFJ ENTERPRISES, INC. Model MFJ-1278B Printer Port Connection MFJ-1278B DB-25 Name Printer Port Pin # Printer Port Test Printer ConsiderationType Printtes CR MFJ-1278B MULTI-MODE Radio Interfacing MFJ-1278B Radio Ports Radio Connector Pin Diagram HT Special Keying Circuit Method 1 Direct Connection to Microphone and Speaker Transmit Audio Level Adjustment for Method I InterfaceCalibra Setting the Receiver Audio Input Level Method 2 Accessory Jack or Interface Box Connection Accessory Jack Interface External Interface Box Transmit Audio Level Adjustment for Interface Method Receiver Audio Setting Important Note Harmonics InterferencePage Keying Connection MFJ-1278B MULTI-MODE Radio Interfacing CW InstallationKey Paddle Connection MFJ-1278B MULTI-MODE Radio Interfacing FSK Connection FSK Cable MFJ-1278B MULTI-MODE Basic Operation Getting Started Basic CommandsFirst Steps Mycall K5FLU Serial Port ConfigurationMFJ-1278B MULTI-MODE Basic Operation Mycall was Nocall cmd Echos Parity and Word LengthParity 1 or Parity New Lines and Line Wrapping Modem Modem Operation ModesAMTOR, Navtex VHF RTTY, VHF Ascii LOW Tone Hz High Tone Hz Shift Hz MFJ-1278B MULTI-MODE Basic Operation Operational Modes Mode Switching With the Mode CommandVerifying Operation Status Radio Port Switching Memory Buffers Buffer Serial Numbering Loading the Memory BuffersTransmitting the Memory Buffers BUF1 The QTH here is Starkville, Mississippi. Enter Buftime 15 Enter Memory Repeat and Buffer Repeat TimeChaining the Memory Buffers Buftime to MFJ-1278B MULTI-MODE Basic Operation Tuning Indicator VHF Packet Connecting and Disconnecting ExerciseMFJ-1278B MULTI-MODE Basic Operation Packet Operation Cmd Fulldup on Cmd Connect K5FLU Cmd Disconne Disconnected Cmd Connect N2WX VIA AD7I DigipeatingAD7I Cmd Connect N2WX VIA NK6K, KV7D Retry count exceeded Unsuccessful ConnectionsMonitoring Channel Activity Disconnected Mheard Enter WB6YMHWD0ETZ,KV7BAD7I WA7GXD N2WX NK6K KV7B Cmd Connect WB0QRP Your First Packet QSOStarting the QSO Connected to WB0QRP Cmd Connect K5FLU VIA WB0QRP CTRL-CCmd Connect WB0QRP VIA K5FLU Special Input Characters Cmd Command 5 was $03Monitoring on the Air Cmd Monitor on Cmd Mcon on Cmd Convers Canline Cmd Hi, John, how are you?CTRL-X\Hi, John, how are you? RedisplaPage HF Packet Operation Hints Pactor Operation What is Pactor?MFJ-1278B MULTI-MODE Basic Operation Pactor Pactor MFJ Pactor $2c-1022 free pcmd Mode PT EnterFEC Unproto operation Mycall n Enter Changeover Monitoring Txdelay TXD Exiting Pactor ModeThreshold Control Setting Monitoring Amtor ARQ requests Pactor Feature Definitions Digital Memory ARQ Connect SPEEDup/SPEEDdown Amtor Detection in Pactor Pactor Status IndicatorsStatus Indicator STA CON MFJ-1278B MULTI-MODE Basic Operation Pactor Mailbox Setting Up your Pactor MailboxMemory Size # of Slots Bytes Avail MFJ Pactor $2c-1022 free Mailbox on Enter Sysop Enter General OverviewMailbox Ready Free de callsign Help, K, L, R, S MFJ-1278B MULTI-MODE Basic Operation Slot## t m To From Subject Nn free de callsignHelp, K, L, R, S Detailed Pactor Mailbox Overview SP call Enter Subject Max Characters Send msg Control-Z or /EX on it own line ends Message ## deleted Nn free n Mailbox Help,K, L, R, S ## EnterEnter Nn free n Mailbox Help, K, L, R, S ## Enter Pactor Enter Mailbox Messages?EH Procedure MFJ-1278B MULTI-MODE Basic Operation CW Operation Receiving CW Enter Transmitting CW Mode CW,15 EnterMSPeed 15 Enter Weight ### Enter CW WeightingTransmitting from Memory Buffers CONTROL-C Tuning your RadioRandom Code Generator Randomcw OFF Enter Ctrl-R Setting Up the for Code PracticeRandomcw on Enter Ctrl-T Sending CW with External Key Paddle Mspeed 15 Enter Radio Terminal Mode Modulated CW Cmd Mode MC EnterMFJ-1278B MULTI-MODE Basic Operation Modulated CW Operation Mode ## Enter Setting Up for Ascii and Rtty OperationVHF Rtty Rtty and Ascii Transmitting Mode VB,110 EnterRtty and Ascii Receiving Bad? Mode HB,75 Baudot Rtty Operation Hints Commercial Rtty Reception CTRL-T Baud, 90% Confidence baud used 7 bits, RXInvert Off WtgCDSpeedConfidence Factor.SpeedData BitsRXInvert On/Off OK Enter OK Amtor Enter Mode HB,75 Enter Configuring for MarsCommand Mars Setting Mars Operation MARsmode Command Operating Mars with MultiCom for IBM Marsmode 1- QSO Mode Marsmode 3- Storage Mode Mode AM Enter Mode a ARQSetting up for Mode a Operations MFJ-1278B MULTI-MODE Basic Operation Amtor Operation N2WX becomes Nwwx using zone Operating Mode a=Q 2=W 3=E 4=R 5=T 6=Y 7=U 8=I 9=O 0=P Setting up for Mode B FEC Monitoring Mode A, ARQMode B FEC Mode B FEC Operations Amtor Status LED Indicators Myselcal xxxx Enter ARQ xxxx Enter Summary of Amtor Contact Sequence Print on Enter Navtex Operation MFJ-1278B MULTI-MODE Basic Operation Navtex OperationNavtex Stations and Frequencies Station QTH Station ID Broadcast Time UTC Navtex on Enter Omega Systems Satnav Systems LORAN-CNavtex OFF Enter MFJ-1278B MULTI-MODE Basic Operation FAX Operation FAX Formats FAXMODEn Lines per Type of Service Minute SecondFaxmode n Enter Printer Connection FAX InstallationFAX Frequency Locations Receiving FAX Mode FX EnterReceiving FAX to the Printer MFJ-1278B MULTI-MODE Basic Operation Two Level FAX Picture Format Display FAX Picture on Computer Screen & Save it to DiskLF, CR, ESC x x, ESC x x x, nnn character of graphics Multi-level FAX Picture Raw Data Format Multifax on Enter Two Level FAX Transmitting Transmitting FAX000 001 110 111 White Lightest grey Darkest grey Black Multi-level FAX Transmitting MFJ-1278B MULTI-MODE Basic Operation Values HEX Creating FAX Pictures for TransmittingPixtones FAX/SSTV Transmit Tones HzPage Printer Connection Sstv InstallationSstv Formats TVMODEn Formats Sstv Printing to the Printer Mode TV EnterReceiving Sstv Pictures Tvmode n Enter MFJ-1278B MULTI-MODE Basic Operation $ss,$aa,$bb,$cc,$dd,$ee,$ff,$gg,$hh,$ii,$jj,$kk,$ll,$mm,$nn Printing Sstv Pictures to the Screen Terminating Sstv Printing Saving Sstv Pictures to DiskTransmitting Sstv Pictures Creating Sstv Pictures for Transmitting MFJ-1278B MULTI-MODE Basic Operation Special Characters Packet Operating Modes Command ModeMFJ-1278B MULTI-MODE Advanced Operation Dec Hex Control Mnemonic Entering Data-Transfer Modes Converse Mode Connected to callsign Transparent Mode Flow Control XON/XOFF Flow Control Type-in Flow Control Detailed VHF Packet OperationHardware Flow Control Station Identification Automatic Operations W3IWI-3IDW3IWI/R Packet Formatting Unattended OperationsCmd Beacon Every Transmit Timing Commands Affecting ProtocolPacket Timing Functions Cmd Unproto QST VIA NK6K Packet Timing Keyup delay = Txdelay + Axdelay * 10 in millisecondsKeyup delay = TXDELAY*10 in milliseconds Retry interval = Frack * 2*n + Radio Baud Rate Wait time = Dwait * 10 + r * TxdelayWait time = Dwait Special Protocol Timing Monitor Functions Real-Time Clock and Time Stamping WB9FLWN7CL C KV7BN2WX D Conperm Setting the MFJ-1278B to Normal OperationHow do I Invoke Multi-Connect? Users Easy-Mail Mailbox Mailbox on CR Setting Up your Easy-Mail MailboxUsers 1 CR Sysop CR Your MFJ-1278B will respond with Slot1 PN ToKB5JNZ FromKF5C BBS Bulletin Memory Size Number of Banks Nn free n Mailbox B,E,Help,J,K,L,M,R,S,TNn free 0 Mailbox B, E, Help, J, K, L, M, R, S, T Paging Sysop any key aborts Paging Sysop any key aborts No answer Mailbox Operation Title Send msg Control-Z or /EX to end Cannot, not yours Slot## t m To From Subject ## CR Callsign Busy Disconnected Additional Mailbox FeaturesForwarding Connect requestCALLSIGN Remote Heard Log Chat ModeEliciting Reverse Forwards Sysop Abort Idle TimeoutMailbox CText Mailbox Messages Not found You have new mail?Mailbox full None found Slotting and Acknowledgment Priority Description MFJ-1278B MULTI-MODE Advanced Operation New Parameters Ackprior Onoff Slots n Remarks Other Related Parameters Baud Rate Frack Seconds Frack Initial Parameter Settings SummaryWhat to Expect ACKTime MFJ-1278B MULTI-MODE Advanced Operation Printing Packet Pictures thru Built-in Printer Port Using PktpixPacket Picture Transfer Packet Picture transfer to the computer screen Radio Setup for HF Packet Operation MFJ-1278B MULTI-MODE Advanced Operation MFJ-1278B MULTI-MODE Advanced Operation Operating HF Packet MFJ-1278B MULTI-MODE Advanced Operation MFJ-1278B MULTI-MODE Advanced Operation Yourcall CQ Yourcall Hiscall MFJ-1278B MULTI-MODE Advanced Operation Check OFF Cmsg Retry DigipeatDwait OFF Maxframe MFJ-1278B Kiss MODE, TNC-2 MODE, Host Mode Kiss Interface for TCP/IP Command Function Comments Param ax0 Entering Commands MFJ-1278B MULTI-MODE Operational Commands Command PrefaceXflow OFF Defaults MFJ-1278B MULTI-MODE Operational CommandsCommand List Cmd Asdfasdf Parameters Beacon EVERY/AFTER n Cmd Conok Y RemarksConok on 8BITCONV ON/OFF Mode Packet Default OFFMode FAX/SSTV Default OFF 8LEVELS ON/OFF 16LEVELS ON/OFF Mode FAX/SSTV DefaultONMode Amtor Default OFF Aalt ON/OFF Alockchar nn Mode CW/MCW Default $15 Mode Packet Default onAcktime nnnn Mode Packet Default Ackpriority ON/OFF Altcall ssss Mode Amtor Default blank Ansbstr cccc Mode Amtor Default blank Answrqra ON/OFF Arcvchar nn Mode RTTY/ASCII Default $12Cmd Unproto Qracr ASA Asendcha nn Mode RTTY/ASCII Default $14Speed Confidence Factor. Data Bit RXInvert On/Off Aspect n Mode FAX Default Mode All Default on Autobaud ON/OFF AUtolf ON/OFF Mode Pactor Default on Autolf ON/OFF Awlen n Mode All Default Autotrac ON/OFF AX25L2V2 ON/OFF Axdelay nAxhang Axhang n Message Effect When Bbsmsgs onBbsmsgs ON/OFF Beacon Everyafter n Mode Packet Default Every Bkondel ON/OFF Bkondel on Parity BLP ON/OFFConmode TRANS/CONV Awlen Mailbox on line. Messages for WB9FLW, AD7I, K9NG Btext textBudlist ON/OFF Bufkey nnn BUF nBuftime n Calira Bwnl ON/OFFSpace Calset n Canline n Cancel Display Output Canpac n OFF CBell ON/OFF Mode Pactor DefaultOFFCbell ON/OFF BELL*** Connected to callsign Change Mode Rtty Default onCcitt ON/OFF Chat Check n CHObell ON/OFF Mode Pactor Default onCHECKV1 ON/OFF CMDchr nnn 0=nn=255 Mode Pactor Default $03 TNC Cmdtime nConnect callsign Conperm ON/OFF Cmsg ON/OFF Cmsgdisc ON/OFF Command n Convers Conmode CONVERS/TRANSTrans Call2 Connect WA7GXD VIA N0ADI-1,WD0ETZ Connect request call Conok ON/OFFCall station busy Connected to N2WX 05/28/85 Constamp ON/OFFConverse Cpactime ON/OFF CR ON/OFF Im not here right now, but you may leave a message Ctext textText Cstatus Cwcall ssss Mode Amtor Default blank CWidmode nn 0=nn=255 Mode Pactor Default Mode CW Default OFF Cwsendch nnn Mode CW Default$FFCwspeedm ON/OFF Cmd Daytime Daytime date&timeYymmddhhmm Cmd Daytime 02/29/84 Dayusa ON/OFF Delay nn Deadtime nnn Delete ON/OFF Mode ASCII/RTTY Default onDiddle ON/OFF Digipeat ON/OFF Disconne Asyqover Display classAsyfrerr Asyrxovr Hovrerr BbfailedDigisent Hundrerr Rxresync RxerrorsRxlenerr Sentfrmr Display EAa ON/OFF Mode Pactor Default onDwait n Easin ON/OFF Mode CW/RTTY/ASCII Default OFFEAS ON/OFF Echo ON/OFF Mode Amtor Default on ECho ON/OFF Mode Pactor Default on ParameterERrstrin cccc Mode Pactor Default Epson ON/OFF EXActcal ON/OFF Mode Pactor DefaultON Mode Packet Default OFF ParametersEscape ON/OFF Farnswor ON/OFF Faxeop ON/OFF Faxrev ON/OFF Mode FAX Default OFFFaxneg ON/OFF FEC Flow ON/OFF FLow ON/OFF Mode Pactor Default onForward Fulldup ON/OFF KV7DN2WX Go ahead and transfer the file Graphlf OnoffHeaderln ON/OFF N2WXKV7D Healled ON/OFF HID ON/OFF IDTime nnn Kilonfwd ON/OFF Mode Mailbox Default OFFKiss ON/OFF Lcalls call1,call2...,call8 Lc callsignLcok Onoff LEdmode 0/1 Mode Pactor Default LFadd ON/OFF Mode Pactor Default OFF Lfaddalt ON/OFF Mode ASCII/Packet Default OFFLfadd Onoff Lfignore ON/OFF MAILbox ON/OFF Mode Pactor Default OFF Mode Amtor Immediate CommandListen Mailbox ON/OFF Mailled ON/OFF Mall ON/OFF @ Bell \ Null Figs Ltrs Marsmode nTX Translations Bell Null Maxframe n Mode Packet Default MAXDown nnn Mode Pactor DefaultMatch ON/OFF MAXUp nnn Mode Pactor Default MAXSum nn Mode Pactor DefaultMbegin cccc Mode Amtor Default Mcom ON/OFF Mcon ON/OFF Mfilter n1,n2,n3,n4 Mode Packet Default none Mend cccc Mode Amtor Default nnnnMctext text Mode MhclearMheard MNONAX25 ON/OFF Monitor ON/OFF Monitor ON/OFF Mode Pactor Default onN2WXW5FD-3 Im ready to transfer the file now WB9FLWAD7IHi Paul Mrpt ON/OFFWB9FLWAD7I,K9NG*,N2WX-7Hi Paul Mspeed n Mtimeout n Mstamp ON/OFF Multifax ON/OFF Mycall call-n MYcall callsign Mode Pactor Default Mfjpactr Myalias call-n Mode Packet Default blank Mymcall callsign Myhierad Text Mode Mailbox DefaultMyselcal ssss Navstn Text Mode Navtex Default ALL Mode Navtex DefaultOFFNavtex ON/OFF LORAN-C NavmsgNewmode ON/OFF Nodeforw node Mode Mailbox Default Mode Pactor Default OFFNO200 ON/OFF Nomode ON/OFF Nodepath text string Mode Mailbox DefaultCmd Nodepath C KB4VOL Cmd Nodeforw PSL5 Nucr ON/OFF Nulls n Pactime Everyafter n Mode Packet Default After Paclen n Mode Packet DefaultOmlc ON/OFF Pass n Mode Packet Default $16 CTRL-V CTRL-C Passall ON/OFF White Lt gray Dark gray Black Area Pixtones nSyn FAX/SSTV Pixtones Values HEXTransmitTones Hz Entering transparent mode for packet-pix reception Mode Packet Immediate CommandPktpix ON/OFF Printer ON/OFF Printgra ON/OFFPrinttes PTOver nnn 0=nn=255 Mode Pactor Default $19 PTSend Radio n QRTRandomcw ON/OFF Rbitmask $xx Mode RTTY/ASCII Default Reconnect call1 VIA call2,call3...,call9 Mode Packet Remsysop call-n Mode Mailbox Default Blank Redispla n Restore ResetResptime n Mode Packet Default Restart Revflim call-n Mode Mailbox Default RETries nnn 0=nn=255 Mode Pactor DefaultRetry n RFE ON/OFF Rinv ON/OFF PID Rxblock ON/OFF$FF Data Rxbright n Rxbr n TVBreak Values Rxcal Calset Adjustment & Location Map Rvfalway ON/OFF Rxinvert ON/OFF Serialno n Mode CW Default Sstv SetupModem Default Baud Rate Speed/ Format Sfnl ON/OFF Slots nnn Mode Packet Default Solf ON/OFF STatus Srxall ON/OFFStart n Status Stop n Streamca ON/OFF This is a test Streamdb OnoffStreamsw n Mailbox Timedcmd text string Mode Mailbox DefaultTimedmin n Mode Mailbox Default String- max 119 chars Trace ON/OFF TRace ON/OFF Mode Pactor Default OFFKV7BCQ,KF7B*this is a test message ModePacket Default OFF Trflow ON/OFF Tune Tries n Mode Packet Default NoneTuneproc Mode Sstv Default OFF Tvbreaks n Mode Sstv Default see belowTvhsync ON/OFF Tvmode n Mode Sstv Immediate Command Txdelay n Mode Packet Default TVX ON/OFF Txdelayc = Radio-PTT-delay-time / Time-per-character TXDelay n Mode Pactor Default 2 60msTxdelayc nnn Baud Rate Time-per-character Txdiddle ON/OFF Txflow ON/OFF Txtmo n Mode Packet DefaultTxinvert ON/OFF U1 UNproto Txuiframe ON/OFFU2 UNproto Users n Mode Packet Default URepeats nn Mode Pactor DefaultUnshift ON/OFF Visticks nnnn Mode Sstv Default0 Defaults Nibble Tone Wdmode ON/OFF WAitdisc nn Mode Pactor DefaultWeight n Mode CW Default WRU Xoff n Mode All Default $13 Xmitok ON/OFF XOn nn XOff nnXON n Packet Messages BbRAM loaded with defaultsWas ? Expected bank n....x MFJ-1278B MULTI-MODE System MessagesToo many packets outstanding Message saved ?call Command Mode Error Messages?bad ?clock not set ?VIA Link Status Messages Callsign busy Connected to call1 VIA call2,call3...,call9Connect requestcall1 VIA call2,call3...,call9 Frmr frame just sent Frmr sent Frmr rcvd LINKOUTOFORDER, possible datalossopt.daytime stamp MFJ-1278B Specifications MFJ-1278B MULTI-MODE Hardware BbRAM Power RequiredGeneral Description Protocol Oscillator Detailed Circuit DescriptionDividers and Baud-rate Generator CPU Complex Serial Interface Power Supply Watch-dog TimerModem RS-232C Handshaking Protocol MFJ-1278B MULTI-MODE Hardware MFJ-1278B MULTI-MODE Hardware Jumper Functions Jumper # Position Function JMP18 JMP16JMP17 JMP19 Jmpd JmpbJmpc Jmpe Parallel Printer Port PIN FUNCTION,J12 Printer Port Pin # Pin Function J5 Pin # Pin Function External Modem Interface Connector J14 J13 Pin # Pin Function Pin 2 Carrier Detect Output MFJ-1278B MULTI-MODE Hardware Modem Disconnect HEADER, J4Pin 1 Carrier Detect Input Pin 3 SIO Special Interrupt Input Pin 7 Connect Status Output Pin 5 SIO RTS OutputPin 6 Transmitter Key Input Pin 8 Unacknowledged Packets Pending Status Output HF Tuning Indicator MFJ-1278B MULTI-MODE Troubleshooting General Tests Obvious Problems Assembly Problems Symptom TNC appears dead Specific SymptomsCabling Problems Oscillator and Reset Circuits Symptom Modem wont calibrate or key transmitter Symptom Uncopyable transmitted or received packets Terminal Interface TroubleshootingSymptom MFJ-1278B wont sign on to the terminal Symptom The MFJ-1278B signs on OK but wont accept commands Physical Layer Data Link Layer MFJ-1278B MULTI-MODE Packet Radio Protocol Hdlc Frames AX.25 Level TWO Code Abbrv Frame Type Sabm RNRREJ DiscPage Channel Flow Control MFJ-1278B MULTI-MODE Appendix a Radio Hookup Table A-1HOOKUP for Specific Radios Table A-1.2Other Radio Connections Calibration Method MFJ-1278B MULTI-MODE Appendix B Modem CalibrationMODULATOR/DEMODULATOR Frequency Calibration Test equipment needed Multilevel xmit...1900 Demodulator Alignment Multilevel demod 307 154KHz 1550 Hz 1062250 Hz 70 R79 Calibration Procedure Set Modulator Tones Using Built-in Calibration Software Comprehensive Alignment Procedure= INT 525000 / Flow + Demodulator Center Frequency Alignment = INT 525000 / Fhigh + Tuning Indicator Alignment Alignment Procedure MFJ-1278B MULTI-MODE Appendix B Modem Calibration MFJ-1278B Adjustment Location Map Calset Values for Various Modulator Tone Frequencies Calset #Page Detailed CW Demodulator Alignment Procedure MFJ-1278B MULTI-MODE Appendix B Modem Calibration MFJ-1278B MULTI-MODE Appendix B Modem Calibration Audio Output Level Adjustment Procedure Cali CR MFJ-1278B MULTI-MODE Appendix C Audio Output Radio 2 CR MFJ-1278B MULTI-MODE Appendix D HF Radio HF Radio Alignment First Method Noise Average Frequency Fc = Flow+Fhigh/2 Page MFJ-1278B MULTI-MODE Appendix E Converting to TNC-2 BPS Packet Setup Mode VP,2400 CR MFJ-1278B MULTI-MODE Appendix F 2400 BPS Packet BPS Receive Audio SettingBPS Transmit Audio Setting CN-6 Jumper Position Transmit Audio Range no load JMP13 JMP14 MFJ-1278B MULTI-MODE Appendix G Jumper Functions Jmpa Jmpz Fig. G-1 Jumper Connector Location MFJ-1278B MULTI-MODE Appendix H Command Summary Acktime BLP Conperm Deadtime FEC Lfignore Mrpt Pactime Retry Timedmin Users Descrpition Component ID MFJ P/NRESISTORS, 1/4 WATT, 5% MFJ-1278B MULTI-MODE Appendix I Parts List RESISTORS, 1/8 WATT, 1% POT 17MM Single TURN, PCB Mount TRIMPOTS, Bourns or EqualTrim POT Single TURN, Miniature Capacitors MULTI-LAYER, Monolithic Ceramic Capacitors MYLAR, 50V/100V Capacitors Electrolytic IC Sockets LOW Profile Capacitor Other TypesICS Do not use 74HCT14 for these ICs DIODES/LEDS Transistors Connectors Voltage Regulator Miscellaneous Grayscale PC Board Assembly For Installing CoverDisplay PC Board Assembly Mounting NUT for R131 This is to Insure Good Contact with Chassis Reduce EMI BOM for Display PC Assembly P/NAddition Parts for MFJ-1278BT only Resistors 1/8W, 1% BOM for Grayscale PC Assembly P/NTrimpot 15 Turns, Bourns or Equal IC Sockets Descrpition Component ID Capacitor Monolithic CeramicCapacitor Electrolytic ICs RESISTOR, 1/4 WATT, 5% RESISTOR, Trim POT, Single TURN, MINIATURE, Horzontal RESISTOR, 1/8 WATT, 1%RESISTOR, NETWORK, SINGLE-ON-LINE, Isolated Capacitors Disc Ceramic Diodes CENTER, 3 POS. Header CENTER, TOP ENTRY,10 POS CN1 Dual ROW Socket ConnectorCENTER, Right Angle JMP 14B POS. Header POS. Shorting Jumer for CN6 Manual Index MFJ-1278B MULTI-MODE Manual Index Autotrac MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index Connect CW KEY-IN Cwspeedm MFJ-1278B MULTI-MODE Manual Index FARnswor, 73, 75 Farnsworth CW, 75 FCS\, Hdlc field Introduction MFJ-1278B MULTI-MODE Manual Index Normal CW MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index Txdelay