Yaesu FT-2000D, Руководство по эксплуатации

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Page 33 FT-2000D O
PERATING
M
ANUAL
EXT ALC Jack
This RCA input jack accepts negative-going external
ALC (Automatic Level Control) voltage from a linear
amplifier, to prevent over-excitation by the transceiver.
Acceptable input voltage range is 0 to –4 VDC.
TX REQ Jack
When this RCA jack shorted to ground, it puts the
FT-
2000D into the transmit mode, and sends out a steady
CW carrier, for linear amplifier or manual antenna tuner
adjustment.
TX GND Jack
This RCA jack’s center pin is closed to ground while
the transceiver’s transmitter is engaged. It may be used
for control of a peripheral device, most typically a lin-
ear amplifier. To enable this jack, please set Menu item
“
146 tGEn ETX-GND ” to the “
EnA EnA
EnA EnA EnA
” (Enable) selec-
tion.
The relay circuit of the
FT-2000D
used for this jack is
capable of switching AC voltage of 100 Volts at up to
300 mA, or DC voltages or 60 V at 200 mA or 30 V at
up to 1 Amp.
+13.8 V Jack
This RCA output jack provides regulated, separately
fused 13.8 VDC at up to 200 mA, to power an external
device such as a packet TNC. Make sure your device
does not require more current (if it does, use a separate
power source).
AF OUT
This gold-plated 3-contact jack provides dual-channel
low-level receiver output, for recording or external am-
plification. Peak signal level is 300 mVp-p at 10 k-
Ohms. Main band (VFO-A) receiver audio is on the
left channel (tip), and sub band (VFO-B) receiver au-
dio is on the right channel (ring). A stereo amplifier or
recorder is recommended, to record each receiver’s
audio separately when dual reception is enabled (au-
dio from either receiver, or both, may be used via this
jack). The front panel [
AF GAIN
] knobs do not affect
the signals at this jack.
REM
(
REMOTE
)
Jack
By plugging in the optional FH-2 Remote Control Key-
pad to this gold-plated jack, direct access to the FT-
2000D CPU is provided for control functions such as
contest memory keying, plus frequency and function
control.
EXT SPKR
This gold-plated two-contact output jack provides re-
ceiving audio from the Main (VFO-A) and Sub (VFO-
B) receivers for an external loudspeaker or speakers,
such as the
SP-2000 . Inserting a plug into this jack
disables the internal loudspeaker. Impedance is 4 ~ 8
Ohms.
μ -TUNE Jack
This 10-pin MINI-DIN jack used for control of the
optional RF
μ Tuning Kit.
DMU Jack
This 8-pin MINI-DIN jack accepts a cable connected
to an optional
DMU-2000 Data Management Unit.
PGM
(
PROGRAM
)
Jack
This coverd 9-pin MINI-DIN jack is used at the fac-
tory.
Please do not connect any equipment to this jack.
CAT Jack
This 9-pin serial DB-9 jack allows external computer
control of the
FT-2000D . Connect a serial cable here
and to the RS-232C COM port on your personal com-
puter (no external interface is required).
KEY Jack
This 1/4-inch phone jack accepts a CW key or keyer
paddle. A 2-contact plug cannot be used in this jack.
Key-up voltage is +5 V, and key-down current is 1 mA.
Plug wiring is shown on page 15, and this jack may be
configured for keyer, “Bug,” “straight key,” or com-
puter keying interface operation via Menu item “
056
A1A R-TYPE .”
R
EAR
P
ANEL