Icom IC-7700, Инструкция по эксплуатации

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• Vector tuning indicator display example
Tuned BPSK signal
BPSK/QPSK idle signal Unmodulated signal
Tuned QPSK signal
4-21
■
Operating PSK
A high-quality DSP-based PSK31 encoder/decoder
is built-in to the IC-7700. When connecting a PC key-
board (p. 2-6), PSK31 operation can be performed
without PSK software installed on your PC.
If desired, you can also use your PSK software; con-
sult the manual that comes with the software.
q
Push a band key to select the desired band.
w
Push
RTTY/PSK
to select PSK.
• After PSK mode is selected, hold down
RTTY/PSK
for 1
second to toggle between PSK and PSK-R modes.
• “PSK” or “PSK-R” appears.
e
Push [DECODE] F-3 to display the decode
screen.
• The IC-7700 has a built-in PSK31 decoder.
r
Tune to the desired signal with the main dial.
• The signal is properly tuned when the radiated lines in
the vector tuning indicator narrow, as show in the ex -
ample below.
• The radiated lines in the vector tuning indicator may be
displayed sporadically.
• When a PSK signal is received, the waterfall display is
activated.
• The waterfall display shows the signals within the pass-
band. Received PSK signals appear as vertical lines.
t
Press [F12] of the connected keyboard to transmit.
• [TX] indicator lights red.
y
Type from the connected keyboard to enter the
message that you want to transmit.
• The typewritten contents are displayed in the TX buffer
screen and transmitted immediately.
• The text color will change when transmitted.
• Press one of [F1]–[F8] to transmit the TX memory con
-
tents.
u
Press [F12] of the keyboard to return to receive.
✔
For your convenience
The transmission contents can be typed before being
transmitted.
q
Perform the steps
q
to
r
above.
w
Type from the connected keyboard to enter the
message that you want to transmit.
• The message is shown in the TX buffer screen.
e
Press [F12] of the connected keyboard to transmit
the message.
• The color of displayed text, in the TX buffer screen, will
be changed when transmitted.
• To cancel the transmission, press [F12] twice.
r
Press [F12] of the keyboard to return to receive.
FFT scope
Vector tuning indicator
TX buffer screen
RX contents screen
Waterfall
Appears
[TX] indicator [RX] indicator
[AF] Main dial
Band keys
RTTY/PSK
F-3
DECODE
4
RECEIVE AND TRANSMIT