AEA BT-1, Инструкция по эксплуатации

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6
CHECK-OUT PROCEDURE
We recommend that your perform the following procedures to quickly acquaint yourself with the
BT-1 or BT-1P and to ensure that the unit is operating properly.
GENERAL FUNCTIONS
1. Apply power to the BT-1. In the case of the BT-1P, be sure the batteries are charged. SEE
HOOK-UP INSTRUCTIONS above.
2. Turn the power switch ON and advance the volume control about 2/3 fully clockwise.
3. On the keypad, press
* * *
and then hold
1 1 1
. The monitor tone should step up in frequency. It
will remain at the last tone you hear when you release the
1 1 1
key.
4. Now press
* * *
and hold
2 2 2
. The monitor tone should step down in frequency. The monitor tone
will now remain at the last to you her when you release the
2 2 2
button.
CODE SENDING PRACTICE
1. Press
*5 *5 *5
and note that you now have a solid monitor tone emanating from the speaker.
(Pressing # will halt the tone.)
2. Insert an earphone or headphone plug into the rear panel earphone socket and not in the
speaker (for private listening).
3. if you have a telegraph hand key, plug a 1/4 inch phone plug (attached to the key) into the key
input socket on the rear panel of the BT-1 or BT-1P. You will now note that the monitor tone will
disappear until you press the telegraph key to form Morse code characters.
TRAINER FUNCTIONS
1. Press
# # #
to clear any previous instructions to the trainer.
2. Press
01#1 01#1 01#1
and note that the unit starts sending dididadit (Morse character F), a 3 second
space, dididadit, etc.
3. Press # to halt.
4. Press
*650 *650 *650
. You have just entered a character speed of 50 WPM. Now repeat
01#1 01#1 01#1
and note that you still hear dididadit, but much higher rate of speed (50 WPM instead of 20
WPM). Press # to halt the trainer.
5. Press
*703 *703 *703
and the
01#1 01#1 01#1
. You will now hear dididadit, only a 0.3 second space, didi-
dadit, etc. (The
*703 *703 *703
command shortened the normal 3 second space between characters
to 0.3 seconds.) Press # to halt the trainer.
6. Press
*760 *760 *760
and the
01#1 01#1 01#1
and note that you now have a 6 second space between
characters. Press # to halt. Turn the power switch off and back on and press
01#1 01#1 01#1
and
note that the spacing between characters has returned to 3 seconds.
7. Press
01#2 01#2 01#2
and note that you now hear dididadit, dididadit, space, dididadit, dididadit,
space, etc. The short space between the first 2 characters is called a character space, the long
space is a long word space.
8. Press
01#5 01#5 01#5
and note that 5 characters are now sent between word spaces. Press # to
halt.
9. The next step will require a little more knowledge of the Morse code to verify. The odds are
that if everything has been working properly so far, this step is not really necessary. You may
want to come back to it after you have learned some of the characters.