Epson Multi-mode Data Controller MFJ-1278B Manual de usuario Pagina 181
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MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS
ASPECT n Mode: FAX Default: 3
Parameter:
n = 2 thru 8
ASPECT is used to establish a reasonable aspect ratio between horizontal and vertical
presentation of 2-Level or 8-Level FAX graphics. The ASPECT command does not apply to
16 Level FAX graphics. It is necessary to have an ASPECT control because the vertical
density a dot matrix printer can represent is much less than the representable horizontal
density.
The ASPECT setting is a ratio of printed: non-printed rows of FAX graphics. The default of
3 means that for every 1 printed FAX row, two rows are discarded. This is the optimum
aspect ratio for HF weather FAX.
If your pictures seem to be elongated horizontally, you should decrease the value of aspect.
The reverse (vertical elongation) is corrected by an increased aspect value.
- Table of Contents 1
- INTRODUCTION 9
- COMPUTER INTERFACING 12
- SERIAL PORT SIGNALS 13
- Apple Macintosh 14
- IBM PCjr 15
- Radio Shack Color Computer 16
- Color Computers 16
- Apple II, II+, IIe, IIc 18
- Pin 1 Frame Ground 20
- Pin 2 Transmit Data 20
- Autobaud 21
- Changing Terminal Baud Rate 22
- Printer Port Connection 24
- Printer Consideration 25
- Printer Port Test 25
- RADIO INTERFACING 26
- RADIO PORTS CONNECTION 27
- HANDHELD RADIO CONNECTION 28
- RADIO INTERFACING METHODS 29
- Receiver Audio Setting 34
- MONITOR SPEAKER CONNECTION 35
- CW INSTALLATION 36
- FSK CONNECTION 37
- GETTING STARTED 38
- SERIAL PORT CONFIGURATION 39
- Parity and Word Length 40
- New Lines and Line Wrapping 41
- OPERATIONAL MODES 43
- MEMORY BUFFERS 44
- Loading the Memory Buffers 45
- Buffer Serial Numbering 45
- Chaining the Memory Buffers 46
- TUNING INDICATOR 47
- PACKET OPERATION 48
- Digipeating 50
- Unsuccessful Connections 51
- Monitoring Channel Activity 51
- Your First Packet QSO 53
- Starting the QSO 53
- Monitoring on the Air 55
- Special Input Characters 55
- BASIC HF PACKET OPERATION 57
- HF Packet Operation Hints 58
- What is Pactor? 59
- PACTOR Operation 59
- FEC Unproto operation 60
- PACTOR ARQ 61
- Changeover 61
- Monitoring 61
- Exiting PACTOR Mode 62
- Operating Hints 62
- Threshold Control Setting 62
- PACTOR FEATURE DEFINITIONS 63
- CONNECT 64
- SPEEDup/SPEEDdown 64
- PACTOR STATUS INDICATORS 65
- PACTOR MAILBOX 66
- General Overview 68
- CW OPERATION 76
- Receiving CW 77
- Transmitting CW 78
- CW Weighting 79
- Tuning your Radio 80
- Random Code Generator 80
- MODULATED CW OPERATION 83
- RTTY and ASCII Receiving 85
- RTTY and ASCII Transmitting 85
- BAUDOT RTTY OPERATION HINTS 86
- Commercial RTTY Reception 87
- AUTOMATIC SIGNAL ANALYSIS 88
- MARS OPERATION 90
- The MARsmode Command 91
- MARSMODE 1- QSO Mode 92
- MARSMODE 3- Storage Mode 92
- AMTOR OPERATION 93
- Operating Mode A 94
- Mode B "FEC" 95
- Mode S "SELCALL" 95
- AMTOR Status LED Indicators 96
- AMTOR OPERATION HINTS 96
- NAVTEX OPERATION 99
- FAX OPERATION 102
- FAX Formats 103
- FAX Frequency 104
- FAX Installation 104
- Printer Connection 104
- Receiving FAX 105
- Receiving FAX to the Printer 105
- Two Level FAX Picture Format 107
- Transmitting FAX 109
- Two Level FAX Transmitting 109
- Multi-level FAX Transmitting 110
- SSTV Formats 114
- SSTV Installation 114
- Receiving SSTV Pictures 115
- SSTV Printing to the Printer 115
- Saving SSTV Pictures to Disk 119
- Terminating SSTV Printing 119
- Transmitting SSTV Pictures 119
- ADVANCED PACKET OPERATION 122
- SPECIAL CHARACTERS 122
- PACKET OPERATING MODES 123
- Entering Data-Transfer Modes 124
- Converse Mode 125
- Transparent Mode 126
- FLOW CONTROL 127
- XON/XOFF Flow Control 128
- Hardware Flow Control 129
- Type-in Flow Control 129
- Station Identification 129
- Automatic Operations 130
- Unattended Operations 131
- Packet Formatting 131
- Commands Affecting Protocol 132
- Packet Timing Functions 132
- Transmit Timing 132
- Packet Timing 133
- Radio Baud Rate 134
- Special Protocol Timing 135
- Monitor Functions 135
- Easy-Mail Mailbox 138
- Mailbox Operation 144
- Additional Mailbox Features 148
- Forwarding: 148
- Eliciting Reverse Forwards: 149
- Remote Heard Log: 149
- Chat Mode: 149
- Page SYSOP: 149
- Mailbox CText: 150
- Idle Timeout: 150
- Mailbox Messages 150
- Description 152
- New Parameters 154
- Other Related Parameters 156
- What to Expect 157
- Packet Picture Transfer 159
- Using PKTPIX 159
- DETAILED HF PACKET OPERATION 160
- Operating HF Packet 163
- KISS INTERFACE FOR TCP/IP 169
- COMMAND PREFACE 171
- ENTERING COMMANDS 171
- Command List 172
- COMMAND NAME 172
- Defaults 172
- Parameters 173
- Remarks 174
- COMMAND EXPLANATION 175
- MFJ-1278B SYSTEM MESSAGES 296
- PACKET MESSAGES 296
- COMMAND MODE ERROR MESSAGES 298
- Link Status Messages 300
- HARDWARE 303
- MFJ-1278B SPECIFICATIONS 303
- GENERAL DESCRIPTION 304
- DETAILED CIRCUIT DESCRIPTION 305
- CPU Complex 306
- Serial Interface 306
- Watch-dog Timer 307
- Power Supply 307
- RS-232C HANDSHAKING PROTOCOL 308
- JUMPER FUNCTIONS 310
- MODEM DISCONNECT HEADER, J4 316
- HF TUNING INDICATOR 318
- TROUBLESHOOTING 319
- GENERAL TESTS 319
- Step 1: Power Supply 320
- Step 2: Obvious Problems 320
- Step 3: Assembly Problems 320
- SPECIFIC SYMPTOMS 321
- PACKET RADIO PROTOCOL 325
- EXPLANATION OF PROTOCOL 325
- HDLC FRAMES 326
- AX.25 LEVEL TWO 327
- CHANNEL FLOW CONTROL 331
- RADIO HOOKUP 332
- MODEM CALIBRATION 334
- Calibration Method II 337
- Tuning Indicator Alignment 340
- CW MODEM TUNE-UP PROCEDURE 344
- AUDIO OUTPUT CALIBRATION 348
- HF RADIO ALIGNMENT 350
- MFJ-1278B 2400 BPS PACKET 354
- 2400 BPS PACKET SETUP 354
- COMMAND SUMMARY 360
- MFJ-1278B/1278BT PARTS LIST 371
- Manual Index 388
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