Yaesu FT DX 9000MP CONTEST - DATA MANAGEMENT OPERATION, Руководство по эксплуатации

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Page 21 FT
DX
9000MP O
PERATION
M
ANUAL
FFFFF
RRRRRONT ONT
ONT ONT ONT
P P P P P
ANEL ANEL
ANEL ANEL ANEL
C C C C C
ONTR ONTR
ONTR ONTR ONTROLS
OLS
OLS OLS OLS
KEY Jack
This 1/4-inch, 3-contact jack accepts a CW key or
keyer paddles (for the built-in electronic keyer), or
output from an external electronic keyer. Pinout is
shown on page 16. Key up voltage is 5 V, and key
down current is 1 mA. This jack may be configured
for keyer, “Bug,” “straight key,” or “computer keying
interface operation” via Menu Selection “
MODE-CW
049 F-KEYER TYPE ” (see page 152). There is an-
other jack with the same name on the rear panel, and
it may be configured independently for Internal Keyer
or pseudo-straight-key operation.
N
OTE
:
You cannot use a 2-contact plug in this jack (to do so
produces a constant “key down” condition).
Cannon (“XLR”)
Microphone Connector
This Cannon-type (XLR) connector accepts input from
the Microphone or other XLR-equipped microphone
system. MIC connector pinout is shown on page 19.
Proper microphone input impedance is 500 ~ 600
Ohms.
If you are using a condenser microphone requiring 48
Volts DC, you may enable this voltage to appear on
the microphone line; see page 88. When the 48-volt
supply line has been enabled, the LED adjacent to the
MIC jack will glow red.
To disconnect the microphone plug, draw out the mi-
crophone plug while pressing and holding in the sil-
ver push-button.
IPO (Intercept Point Optimization) Switch
The [ IPO
(
A
)] Lamp-button may be used to set the
optimum receiver front end characteristics of the main
receiver circuit for a very strong-signal environment.
Selecting IPO bypasses the front end RF amplifier and
feeds the received signals directly to the first mixer of
the Main band (VFO-A) receiver circuit. While the
IPO feature is activated, this button will remain illu-
minated.
The [
IPO
(
B
)] Lamp-button, similarly, allows direct
feed of the received signals to the first mixer of the
Sub band (VFO-B) receiver circuit. While the IPO
feature is activated on the sub receiver, this button
will be lit.
A
DVICE
:
The FT
DX
9000MP ’s first mixer is an active type,
using four SST310 Junction FETs. This mixer design
provides gain to the receiver chain, so the noise figure
of the receiver is fundamentally lower than with some
other designs. Therefore, it frequently is not neces-
sary to utilize the RF preamplifier, and the receiver
Intercept Point will be substantially increased by en-
gaging IPO, so as to feed the incoming signals directly
to the first (active) mixer. We recommend that IPO be
switched on whenever possible.
ANTENNA SELECT Switches
These momentary buttons select the antenna jack on
the rear panel, with the selection indicated by the LED
in each button. When an antenna has been selected
for operation on the Main band (VFO-A), the LED in
the button glows red. When an antenna has been se-
lected for operation on the Sub band (VFO-B), the
LED in the button glows umber.
TUNE Switch
This is the on/off switch for the FT
DX
9000MP ’s
Automatic Antenna Tuner.
Pressing this button momentarily places the antenna
tuner in line between the transmitter final amplifier
and the antenna jack (the LED will become illumi-
nated). Reception is not affected.
Pressing and holding in this button for 1/2 second,
while receiving in an amateur band, activates the trans-
mitter for a few seconds while the automatic antenna
tuner rematches the antenna system impedance for
minimum SWR. The resulting setting is automatically
stored in one of the antenna tuner’s 100 memories,
for instant automatic recall later when the receiver is
tuned near the same frequency.
Pressing this button momentarily, while the Tuner is
engaged, will take the Automatic Antenna tuner out of
the transmit line.
N
OTE
:
When the Automatic Antenna tuner is tuning itself, a
signal is being transmitted. Therefore, be absolutely
certain that an antenna or dummy load is connected to
the selected antenna jack before pressing and holding
in the [
TUNE
] button to start antenna tuning.
METER Switch
This control switch determines the function of the Main
Meter during transmission.
COMP : Indicates the RF speech compressor level
(SSB modes only).
PO
: Indicates the power output level.
SWR
: Indicates the Standing Wave Ratio (For-
ward: Reflected).
IDD : Indicates the final amplifier drain current.
MIC LVL : Indicates the relative microphone level.
MONI (Monitor) Switch
This button enables the transmit monitor in the SSB,
CW, AM, and FM modes. While activated, the LED
in this button glows red. Adjustment of the Monitor
level is accomplished using the [
MONI
] knob, located
just to the right of the [ MONI
] switch.
A
DVICE
:
When using headphones, the Monitor is highly useful
for making adjustments to the Parametric Equalizer
or other voice quality adjustments, because the voice
quality heard in the headphones is such a “natural”
reproduction of the transmitted audio quality.