Using The Speech Processor - Yaesu FT-950 Operating Manual

E
NHANCING
U
SING THE
The FT-950's Speech Processor is designed to increase "talk power" by increasing the average power output, (via a
sophisticated compression technique) and adjusting the audio quality to the menu settings ("100 TAUD PE1 FRQ
TAUD PE2 FRQ", "106 TAUD PE3 FRQ 106 TAUD PE3 FRQ". The result is improved intelligibility when conditions are difficult.
TAUD PE2 FRQ TAUD PE2 FRQ 106 TAUD PE3 FRQ 106 TAUD PE3 FRQ
TAUD PE2 FRQ TAUD PE2 FRQ 106 TAUD PE3 FRQ
1. Adjust the [ MIC GAIN ] knob, as described on page
56.
2. Press the [ METER ] button repeatedly to select
"COMP" (Compression) meter.
3. Press the [ PROC ] button repeatedly until the
" " and "
confirming that the Speech Processor is engaged.
A :
DVICE
Blinking " " and "
Parametric Microphone Equalizer menu settings have
all been set to "OFF OFF" ("100 TAUD PE1 FRQ
OFF OFF OFF
TAUD PE2 FRQ", "106 TAUD PE3 FRQ
TAUD PE2 FRQ TAUD PE2 FRQ TAUD PE2 FRQ TAUD PE2 FRQ 106 TAUD PE3 FRQ 106 TAUD PE3 FRQ 106 TAUD PE3 FRQ 106 TAUD PE3 FRQ").
4. Press the PTT switch on the microphone, and speak
into the microphone in a normal voice level. Observe
the level indicated on the COMP meter scale.
5. Adjust the compression level of the Speech Processor
via the Menu Item "109 TGEN PROCLVL 109 TGEN PROCLVL" so that the
109 TGEN PROCLVL 109 TGEN PROCLVL
109 TGEN PROCLVL
meter needle does not indicate more than "10 dB" on
the COMP meter scale. See Box at the right for details
of the setting.
6. To switch the Speech Processor off, press the [ PROC ]
button once more. The "
will turn off, confirming that the Speech processor is
turned off.
1. Press the [ METER ] button repeatedly to select
"COMP" (Compression) meter.
2. Press the [ MENU ] button to engage the Menu.
3. Rotate the [ SELECT ] knob to select Menu item
"109 TGEN PROCLVL
109 TGEN PROCLVL 109 TGEN PROCLVL
109 TGEN PROCLVL 109 TGEN PROCLVL".
A :
DVICE
Press the [ SELECT ] knob to toggle the Menu item
display between "109 TGEN 109 TGEN" and "PROCLVL
109 TGEN 109 TGEN 109 TGEN
4. Press the PTT switch on the microphone, and speak
into the microphone in a normal voice level. Ro-
tate the [ CLAR/VFO-B ] knob so that the meter
deflects to not more than "10 dB" on the COMP
meter scale.
5. Press and hold in the [ MENU ] button for one sec-
ond to save the new setting and exit to normal op-
eration.
Page 62
T
RANSMIT
S P
PEECH ROCESSOR
" icons appear in the display,
" icons indicate the
100 TAUD PE1 FRQ", "103
100 TAUD PE1 FRQ 100 TAUD PE1 FRQ 100 TAUD PE1 FRQ 103 103 103 103
" and " " icons
Adjusting the compression level of the Speech Processor
PROCLVL". PROCLVL PROCLVL PROCLVL
S Q
IGNAL UALITY
( SSB
AM M
AND
[ PROC ] Button
[ MIC GAIN ] Knob
[ METER ] Button
A :
DVICE
Excessive advancement of the compression gain will
result in a degradation of the transmitted signal's sig-
nal-to-noise ratio, thereby reducing intelligibility at the
other end of the circuit.
The Transmit Monitor is a very helpful way to verify
proper adjustment of the compression level. Pressing
the [ MONI ] button and then adjusting the [ MONI ] knob
for a comfortable listening level while you are trans-
mitting, you will be able to hear the difference in sound
quality as you make adjustments.
You may set the RF power output via the Menu item
"111 TGEN TX PWR 111 TGEN TX PWR", whether or not the Speech Pro-
111 TGEN TX PWR 111 TGEN TX PWR 111 TGEN TX PWR
cessor is engaged.
You may adjust the Parametric Microphone Equalizer
when the speech processor is engaged, using Menu
Items "100 100" through "108
100 100
100
tails.
When the optional DMU-2000 Data Management Unit
is connected, you may observe the effect of your com-
pression level adjustments by viewing the waveform
on the "Oscilloscope" page.
[ SELECT ] Knob
[ METER ] Button [ MENU ] Button
FT-950 O
)
ODES
100 TAUD PE1 FRQ", "103
100 TAUD PE1 FRQ 100 TAUD PE1 FRQ 103 103
100 TAUD PE1 FRQ 103 103
108". See page 117 for de-
108 108
108
[ CLAR/VFO-B ] Knob
M
PERATING ANUAL