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MFJ-1278 & MFJ-1278T Fast-Start Manual

2

I. INSTALLATION

A.

Power Supply

Your MFJ-1278  is  supplied  with  an  AC adapter.  Plug  the  power  supply into a  110  VAC outlet  and
plug the 2.1 mm coaxial plug into "POWER" jack locate at the rear of the MFJ-1278.

For  operation  on  AC  line  voltage  other  than  110  V  AC,  you  must  obtain  a  suitable  AC  adapter
which will provide 12 VDC at 500 mA to operate your MFJ-1278.

If it is necessary for you to wire the 2.1 mm coaxial plug for your power supply, wire the 2.1 mm
plug so that the center pin is positive and the outside sleeve is ground.

B.

Computer Interfaces

This computer installation applies to those who are using the MFJ Starter Pack with IBM and com-
patibles, Commodore C64/128 and Macintosh computers. If you are not using one of these com-
puters, or if you are not using an MFJ Starter Pack, then you must refer to the main MFJ-1278 in-
struction manual for computer installation.

The  cable supplied with the  Starter Pack must be t used in  this installation. If you are not using
the Starter Pack computer cable to make this connection, you should refer to the main MFJ-1278
instruction manual, Chapter 2 "Computer Interfacing" to verify that the cable you are using is cor-
rectly wired.

WARNING:  IMPROPERLY  WIRED  CABLE  COULD  DAMAGE  YOUR  MFJ-1278  AND/OR  YOUR  COM-
PUTER!

1. Connect the cable from the computer to the MFJ-1278 as follows:

IBM and compatibles:

Connect  the  cable  end  with  DB-25  male  to  the  back  of  the  MFJ-1278  RS-232  connection
mark  "RS-232".  Then  connect  the  other  end  of  the  cable  with  DB-25  female  to  COM1  or
COM2 RS-232 port of your computer.

Commodore C64/128

Connect the cable end with 8-pin TTL connector to the back of the MFJ-1278 TTL connector
marked "TTL", Then connect the other end of the cable to the user port of the C64/128.

Follow the instruction supplied with the Starter Pack carefully. Make sure that the cable is
wired correctly and also make sure that the connector is oriented properly before plugging
it to the MFJ-1278 and the Computer.

Apple Macintosh

Connect the  cable end with DB-25 female to the back of the  MFJ-1278  RS-232  connector
marked "RS-232". Connect the other end of the cable to the Computer modem port.

2. Load the terminal program by following the procedure described in the terminal program docu-

mentation.

3. Make sure that the terminal program parameters are set as follows:

Baudrate:

9600 (4800 for C64/128)

Wordlength:

8

Stopbit:

1

Parity:

None

Содержание MFJ-1278

Страница 1: ...our new MFJ 1278 1278T Multi Mode Data Controller between your radio and computer CAUTION Read all Instructions Before Operating Equipment MFJ ENTERPRISES INC P O BOX 494 MISSISSIPPI STATE MS 39762 US...

Страница 2: ...s of the Fast Start manual Your MFJ Starter Pack consists of terminal Software and a serial cable to connect between the MFJ 1278 and your Computer The Starter Packs available are MFJ 1289 for IBM and...

Страница 3: ...8 instruction manual Chapter 2 Computer Interfacing to verify that the cable you are using is cor rectly wired WARNING IMPROPERLY WIRED CABLE COULD DAMAGE YOUR MFJ 1278 AND OR YOUR COM PUTER 1 Connect...

Страница 4: ...your Computer C Radio Interface The first step in connecting the MFJ 1278 is to wire a cable to connect the MFJ 1278 Radio Port to the microphone or accessory connector of the radio The radio cable su...

Страница 5: ...SK Operation this connection can be made thru the use of the TTL connector in the rear panel of the MFJ 1278 Only two lines Pin 8 FSK and Pin 3 ground are needed in making the FSK connection to your r...

Страница 6: ...ad the terminal program and make sure that the terminal program Parameters are set as described earlier 6 Turn on the MFJ 1278 Press the Return key several times in succession MFJ 1278 will sign on wi...

Страница 7: ...e set to operate 1200 baud packet d To enter SSTV mode type MODE TV CR MFJ 1278 will be set to operate SSTV in the 8 5 second format Abbreviation for all the MODEs are as follows MODE VP for VHF packe...

Страница 8: ...controls are located on the left side of the MFJ 1278 With a small screw driver turn the transmit control fully counter clockwise minimum 5 Slowly turn it clockwise increase until no increase in audio...

Страница 9: ...al modem MFJ 2400 can be pur chased and installed Installation is simple your MFJ 1278 is equipped with all connectors neces sary to make this Installation without modification or soldering With the 2...

Страница 10: ...nsmit audio on the 2400 board is set by adjusting R38 next to T2 on the 2400 modem board Transmit audio for the 1278T is preset at the factory to match the audio level of the 1200 modem on the MFJ 127...

Страница 11: ...e display is in the following format Speed Confidence Factor Speed Data Bits RXInvert On Off A typical result will look like this 80 baud 90 Confidence 75 baud 7 bits RXInvert Off After the result is...

Страница 12: ...gnal Note that when using ASA noise will have major effect on the degree effectiveness for ASA V COMMAND UPDATE The following commands have been added since the printing of the MFJ 1278 4th Edition In...

Страница 13: ...es the current PIXtones values When n 1 to 9 TXBRight assumes PIXtones values as follows n PIXtones 0 assumes the current PIXtones values 1 BC 98 A8 88 B0 90 A0 80 2 BA B8 A8 88 B0 90 A0 80 3 B9 BA B8...

Страница 14: ...it appears that the Station you re working is unable to successfully receive your packets despite your adequate signal This failure of some TNCs to receive TXDIDDLEd packets may be a result of some So...

Страница 15: ...this information with the instruction manual of your radio MFJ Enter prises Inc is not responsible for any inaccuracy of the information provided by the diagrams and charts in this instruction manual...

Страница 16: ...MFJ 1278 MFJ 1278T Fast Start Manual 15 B 4 pin Microphone Connector...

Страница 17: ...MFJ 1278 MFJ 1278T Fast Start Manual 16 C Handheld Radio Connectors...

Страница 18: ...MFJ 1278 MFJ 1278T Fast Start Manual 17 D Using the Accessory Jack...

Страница 19: ...pin 8 Tip Lg pin 4 pin 6 7 Sleeves YAESU FT 208 FT x09 FT x3 FT 727 4 pin 8 pin HTs HTs HTs HTs pin 2 pin 8 pin 1 Tip Sm pin 3 pin 6 pin 3 Tip Sm Speaker Speaker pin 2 Tip Lg pin 1 pin 7 pin 4 Sleeve...

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