Yaesu FT-897D, Руководство по эксплуатации

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Page 11 FT-897D O
PERATING
M
ANUAL
CW K
EY
/K
EYER
C
ONNECTIONS
All commonly-available keyer paddles should work perfectly
with the built-in Electronic Keyer. The wiring configuration
for the paddle is shown below.
For straight-key operation, only the tip and shaft connec-
tions are used.
R
ECEIVER
A
CCESSORIES
(
T
APE
R
ECORDER ETC
.
)
Connection of a tape recorder or other such receiver acces-
sory is easily accomplished by using the
DATA
jack’s Data
Out (1200 bps) terminal (Pin 5) and Ground (Pin 2). The
audio output is fixed at 100 mV, with an impedance of 600
Ω
.
I
NSTALLATION
Note : Even when using a straight key, you must use a three-
conductor (“stereo”) plug. If a two-conductor plug
is used, the key line will be constantly shorted to
ground.
When using an external electronic keyer, be absolutely cer-
tain that it is configured for “positive” keying, not “nega-
tive” or “grid block” keying. The “key-up” voltage of the
FT-897D is +5V, and the “key-down” current is only about
1 mA.
For CW automated keying using a personal computer, with
an external memory keyer providing for manual sending, it
usually is possible to connect the keyed lines together via a
“Y” connector. Check with the documentation accompany-
ing your keyer and your contest/DX software for any cau-
tions which need to be observed.
KEY
GND
GND KEY
COMMON
COMMON
DOT
DOT
DASH
DASH
A
DJUSTING THE
F
RONT
B
AIL
The front bail of the transceiver allows the transceiver to be
tilted upward for better viewing. Simply fold bail forward
to raise the front of the transceiver, and fold bail back against
the bottom case to lower the front of the
FT-897D .
DATA
DATA OUT
1200bps
GND