MFJ Memory Keyer MFJ-493, Инструкция по эксплуатации

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MFJ-493 Instruction Manual
3
Basic Operation
The
Super Menu Driven Memory Keyer™/ Keyboard
is simple to operate. The pushbutton marked
PWR controls power to the unit. After turning the unit on, the keyer will light the front panel LEDs
sequentially and send the characters "ON" in Morse Code using the sidetone speaker. This tells you
the MFJ-493 is ready for operation.
Start sending with a paddle or keyboard. Adjust the volume and speed to your preference. If the
speed is still too fast or too slow, adjust the range of the speed knob using the Speed Set feature.
See Menu Operation.
All characters or code sent by the user are played on the sidetone speaker This allows the user to
hear what he is keying, typing, or sending with a computer.
Only when the keyer is used with a paddle is the code sent as soon as it is keyed. When using a
keyboard or keyer terminal, you may type ahead of the code that is being transmitted. This allows
you to enter words and phrases faster than the transmitted code. This permits smoother code with
less pauses because you can fix misspelled words and think of the right phrase to use while your
previous sentence is being sent.
Note:
Holding a keyboard key down continues to produce that
character.
When you are entering commands or saving memories no code is sent to the key outputs and your
radio. This keeps all erroneous code off of the air.
Keyer Reset
Each time the keyer is turned off, the microprocessor powers down into a sleep mode. This allows
all memories and configurations to remain in memory until the unit is turned on again. If the keyer
does not retain its settings see the section on the lithium battery.
If you want to clear the keyer's memory you can do a reset. To reset the keyer, hold down the
MENU key and turn the keyer "ON". This resets all settings to the factory defaults:
All memory messages are cleared.
Speed set to 20 WPM.
Weight set to 50 % duty cycle.
Sidetone frequency set to 2000 Hz.
Iambic A mode selected.
Queue mode off.
Break mode off.
Output enabled.