Yaesu FT DX 1200, Руководство по эксплуатации

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Page 77
FT
DX
1200 O
PERATING
M
ANUAL
The powerful CW operating capabilities of the FT
DX
1200 permit operation using an electronic keyer paddle, a “straight
key”, or a computer-based keying device.
S
ETUP FOR
S
TRAIGHT
K
EY
(
AND
S
TRAIGHT
K
EY EMULATION
)
O
PERATION
Before starting, connect your key line s) to the front and or rear panel KEY jack s). Be sure the [ BK-IN
] button is
turned off for now.
1. 3 ress the [ MODE
] button to engage CW operation.
The “ USB CW ” icon will appear in the display. The
“ MONI ” icon will appear in the TFT display and the
CW monitor is activated.
A
DVICE
:
If you press and hold the [ MODE
] button, you will
engage the “CW 5 everse” mode, whereby the “op-
posite” sideband injection is used, compared to the
“normal” sideband. The “
LSB CW ” icon will ap-
pear in the display if you select CW 5 everse.
. 5 otate the 0 ain Tuning ' ial knob to select the de-
sired operating fre T uency.
3. 3 ress the [ BK-IN
] button to engage automatic acti-
vation of the transmitter when you close the CW key.
The “
BK-IN ” icon will appear in the TFT display.
A
DVICE
:
ˆ When you close your CW key, the transmitter
will automatically be activated, and the CW car-
rier will be transmitted. When you release the
key, transmission will cease, and after a brief
delay, receive will be restored. The delay time is
user-programmable per the discussion on page
83.
ˆ
$ s shipped from the factory, the FT
DX
1200 T ;
5; system for CW is configured for “Semi-
break-in” operation. However, using 0 enu item
“
063 CW BK-IN
”, you may change this setup
for full break-in QS . ) operation, whereby the
switching is T uick enough to hear incoming sig-
nals in the spaces between the dots and dashes of
your transmission. This may prove very useful
during contest and traf
¿ c handling operations.
4. 2 peration using your CW key may now proceed.
A
DVICE
:
ˆ
You may adjust the CW sidetone audio level setting
of 0 enu item “
036 MONITOR LEVEL
”.
To adjust the 0 onitor level
1) $ ctivate the 021 I circuitry, if necessary.
) 3 ress and hold in the [ MONI
] button for one
second to enter the 0 enu item “
036 MONITOR
LEVEL
”.
3) 3 r ess the [
SELECT
] button.
4) While keying, rotate the [ VFO-B/CLAR
] knob
or press the S T button) to adjust the monitor
level.
) Whe n you are satisfied with the setting, press
the [ SELECT
] button, then press the [
MENU
]
button to save the new setting and exit to normal
operation.
ˆ
If you set the [
BK-IN
] button to
2 ff, you may prac-
tice sending CW with the sidetone only, without hav-
ing the signal go out over the air.
ˆ If you reduce power via the 0 enu item “
177 TX
MAX POWER
”, the $ LC meter reading will increase
this is normal and does not indicate any problem
whatsoever
because increased $ LC voltage is being
used to lower the power).
T
ERMINOLOGY
:
Semi-break-in
This is a pseudo-”V 2; ” mode used on CW, whereby the closure of the CW key will engage the transmitter, and
release of the key will allow the receiver to recover after a short delay. 1 o signals will be heard during the spaces
between dots and dashes unless the sending speed is extremely slow).
Full break-in
Full break-in also known as “Full QS . ”) involves very fast switching between transmit and receive, incoming
signals may be heard between the dots and dashes as you send them. This allows you to hear a station that sud-
denly starts transmitting on your fre
T uency, while you are in the midst of a transmission.
CW M
ODE
O
PERATION
[MONI] Button [BK-IN] Button [MODE] Button