Bedienungsanleitung Yaesu FTDX1200 (Seite 107 von 140) (Englisch)

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Page 105FT

1200 OPERATING MANUAL

DATA (PSK) OPERATION

The

1200

has a capability of a 3S. decode function when the optional FFT unit is installed. You can easily syn-

chroni]e by aligning the marker on the $F-FFT screen display, together with the decode screen while receiving a signal.

'ecoding with this transceiver supports both general B3S. and Q3S. that have error correction functions.

PSK DECODE

(

WITH OPTIONAL FFT UNIT

)

1. 3ress the

[

MODE

]

switch, set the operating mode to

“

DATA USB

”.

ADVICE:

3ress and hold the

[

MODE

]

switch for approxi-

mately one second to switch back and forth between

“

DATA USB

” and “

DATA LSB

”.

. When you have con¿gured 0enu item “

069 DATA

MODE

” to “

PSK

”, and “

194 PSK MODE

” to “

BPSK

”

or “

QPSK

”.

3. 5eceive a 3S. signal, and press and hold the

[

SCOPE

]

switch for one second or longer.

The 3S. '(C2'( screen displays, and the decoded

text is displayed on the screen.

DVICE:



$lign the peak of the received signal with the marker

of the $F-FFT screen.



If text is displayed due to noise and band clutter,

when a 3S. signal is not being received, turn the

[

VFO-B/CLAR

]

knob to adjust and threshold level.

Threshold Level Adjustment

Scrambled text may be displayed due to noise and band clutter, when a signal is not being received. You can ad-

just the threshold level so scrambled text is not displayed.

Turn the

[

VFO-B/CLAR

]

knob, and adjust the

threshold level between 0 and 100) so scrambled

text is not displayed due to noise.



1ote that text will no longer be displayed for

weak signals if you increase the level too much.



You switch between threshold level display and

normal display each time you press the

[

SE-

LECT

]

button.



The threshold level is displayed in the TFT dis-

play.

NOTE:



Cross talk, noise, phasing, and the like may prevent

reliable decoding of the message.



You can set the data output level of data communica-

tions 3S.31, SSTV, etc.) using 0enu item “

078

DATA OUT LEVEL

”.



If continuously sending for more than a few minutes

or if sending time is longer than receiving time, re-

duce the transmit power output to between 1 and

13 using 0enu item “

177 TX MAX POWER

”.

To cancel the 3S. decode function, press and hold the

[

SCOPE

]

switch again for one second or longer.

Displays the decoded PSK

signal.

Displays content written to

the PSK text memory

If you transmit content written to the PSK text memory

(page 106), the transmitted PSK signal is displayed as

text.

Note that transmitted text is displayed in white.

#(((6

%3 %3 %3 &'

Ჾ

%3 %3 %3 & ,#'Ჹ

25-



&'%1&'

AF-FFT display (see page 40)

(“Spectrum” or “Waterfall” display)

Threshold level

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