MFJ MFJ-422E Скачать руководство пользователя страница 3

MFJ-422E/422EX Instruction Manual 

Electronic Keyer Paddle 

5.

 

The 

Volume

 control, located on the left side of the unit, adjusts the sidetone 

level of the internal speaker.  Turn the control clockwise to increase the 
volume and counter-clockwise to decrease the volume. 

 
6. The 

Weight

 control varies the code weight from approximately 25% to 

75%, with the standard dot defined as 50% weight.  The standard dot-dash-
space ratio is 1:3:1 (trimpot at mid-range).  This control is accessed through 
a small hole on the rear of the unit and may be adjusted using a small flat-
headed screwdriver.  This control is turned clockwise to increase dot and 
dash lengths and counter-clockwise to decrease dot and dash lengths. 

 
7. The 

Tone

 control sets the desired sidetone pitch from approximately 300 to 

1200 Hz.  This control is also accessed through a small hole on the rear of 
the unit and may be adjusted using a small flat-headed screwdriver.  This 
control is turned clockwise to raise the pitch and counter-clockwise to 
lower the pitch. 

 
8. The 

Key Output

 circuit supports both positive and negative keyed radios.  

The MFJ-422E can only key one type of transmitter at a time.  This is an 
internal jumper selected option.  The unit is factory set to direct keying 
(most solid state radios).  To change to grid-block keying (most radios with 
tube finals) the power must be off, then remove the paddle to access the 
jumpers inside the case.  Locate jumpers JMP1 and JMP2.  JMP2 is directly 
behind the RCA jack (J2).  JMP1 is located behind the power jack (J1).  Set 

both

 jumpers JMP1 and JMP2 to the "G" position.  To key a solid state 

transmitter, set both jumpers to the "D" position. 

 

Note:  Power must be off when changing the jumper settings. 

 

9. The 

Iambic Type A/B

 mode is also set inside the unit with a jumper.  The 

unit is factory set for Type "A" Iambic.  If you prefer Type "B" Iambic, 
remove the paddle to access the jumper.  Locate jumper JMP3 behind the 
power jack (J1), between JMP1 and JMP8; set it to the "B" position.  For 
Type "A" Iambic, set the jumper to the "A" position. 

 

Note:  Power must be off when changing the jumper settings. 

 

When a squeeze is released during an element (dot or dash), type "B" adds 
the opposite element.  Type "A" just finishes the element in progress and 
does 

not

 produce a following alternate element.  For example, in Type "A" 

Iambic, a squeeze release during the "dah" in the letter A will produce "dit 
dah" (A).  In Type "B" Iambic, a squeeze release during the "dah" in the 
letter A will produce "dit dah dit" (R). 

Содержание MFJ-422E

Страница 1: ...ad Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 Model MFJ 422E 422EX COPYRIGHT 2017 M F J ENT ERPRISES INC VERSION 4A Electronic Keyer Paddle with Memory CAUTION Read All Instructions Bef...

Страница 2: ...Auto button allows semi automatic bug and manual operations The keyer generates dots automatically when a squeeze or single lever key is used Dashes are manually made The keyer is completely manual wh...

Страница 3: ...transmitter at a time This is an internal jumper selected option The unit is factory set to direct keying most solid state radios To change to grid block keying most radios with tube finals the power...

Страница 4: ...de the case MFJ suggests the use of a good long life alkaline battery for longest operation 4 Remove the rubber foot from the bottom rear of the paddle 5 Remove the plastic cable clamp from the bottom...

Страница 5: ...ubt try both jumper positions The transmitter will key continuously or not at all when the jumpers are connected to the wrong positions Keyer Operation 1 A nine volt battery or an optional power adapt...

Страница 6: ...ped If deleting the first word of the message the keyer will play GO instead At the end of your message press and hold the Message button until the keyer sends an end of message character di dah di da...

Страница 7: ...s in the serial number are sent Only three digits are sent for numbers less than 1000 use leading zeros when appropriate The serial number is automatically post incremented each time it is sent and up...

Страница 8: ...ce paddle sending is finished press the Message button again to continue the message S Space inserts an extra standard word space into the message This command yields the same result as G7 but uses on...

Страница 9: ...a Morse code message is sent to indicate the nature of the failure 8 The paddle the buttons and jumpers JMP3 to JMP9 are automatically tested for shorts to ground The LED should be off at this point 9...

Страница 10: ...rn off the power Failure Message Meanings DH FAIL Dash level is shorted or improperly connected DT FAIL Dot level is shorted or improperly connected EE FAIL Non volatile memory circuitry is improperly...

Страница 11: ...epetition di di dah dah di dit IMI Fraction Bar or Slash Bar dah di di dah dit DN End of Message Plus Sign or Cross di dah di dah dit AR End of Work di di di dah di dah SK Double Dash Equal Sign Pause...

Страница 12: ...his manual If the manual does not reference your problem or your problem is not solved by reading the manual you may call MFJ Technical Service at 662 323 0549 or the MFJ Factory at 662 323 5869 You w...

Страница 13: ...MFJ 422E 422EX Instruction Manual Electronic Keyer Paddle 12 SCHEMATIC...

Страница 14: ...MFJ 422E 422EX Instruction Manual Electronic Keyer Paddle 13...

Страница 15: ...is available by calling the Service Department at 662 323 0549 or the MFJ Factory at 662 323 5869 4 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 5 Wired and test...

Страница 16: ...MFJ 422E 422EX Manual Version 4A Printed In U S A 05 17 300 Industrial Park Road Starkville MS 39759 MFJ ENTERPRISES INC...

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