16
VL-2000 Operating Manual
Operation
p
repArATionS
To transmit the high quality RF signal, adjust the ALC voltage in the following procedures, before operating.
i
mporTAnT
n
oTe
r
Confirm whether wiring does not have a miss wiring again.
r
Connect the Dummy load which have an enough RF Input Power to the Antenna Connector on the rear panel of
the
VL-2000
.
r
The
VL-2000
requires 220 Volt AC power for 1.5 kW operation, while 117 Volt AC power is possible at the 500
W power output.
r
When connect the
FT
DX
9000D/Contest
,
FT
DX
5000
,
FT-2000D
(200 W transceiver) to the
VL-2000
, set the
ATT
switch on the
VL-2000
front panel to “on” position to reduce the input power of the
VL-2000
.
r
When connect the
FT
DX
9000MP
(400 W transceiver) to the
VL-2000
, set the
ATT
switch on the
VL-2000
front
panel to “on” position, and set the maximum RF output power level to “200 W” via menu item “TX GNRL 173
TX MAX POWER” on the
FT
DX
9000MP
to reduce the input power of the
VL-2000
.
1. Set the
INPUT
switch to the position which is con-
nected to the exciter.
2. Rotate the
ALC-1
(or
ALC-2
: determine to the exciter
connected) potentiometer fully counter clockwise.
3. Set the operating band of the exciter and
VL-2000
to
the same operating band.
Note
: If you connect the supplied
CNTL
Cable be-
tween the transceiver and
VL-2000
, the operating
band of the
VL-2000
will automatically set when you
set the transceiver’s operating band.
4. Set the operation mode of the exciter to the “CW”
mode.
5. Set the
OPERATE
switch and
TUNE
button to both
“off”.
6. Set the
METER-1
function to “PO” by pressing the
METER-1
switch (The “PO” LED will glow red).
7. Press the one of the
ANT
(
1
-
4
) buttons correspond-
ing to the antenna jack connecting the Dummy Load.
8. Press the
PTT
switch of the exciter, then adjust the
RF output power level of the exciter so that the
ex-
citer’s PO meter
reading becomes 100 watt (or 200
watt).
Note
: Refer to the operating manual of the exciter for
the adjustment method of the RF output power level
of the exciter.
9. Release the
PTT
switch, then set the
OPERATE
switch to “on” (The “OPERATE” LED will glow red).
10. Set the
ATT
switch to “on” (The “ATT” LED will
glow red), if the exciter output which you connected
exceeds 100 watts PEP.
Caution !
:
Do not forget this operation, as it may
cause a serious damage to the
VL-2000
by an over
injection.
11. Press the
PTT
switch of the exciter again, then adjust
the
ALC-1
(or
ALC-2
) potentiometer so that the
ME-
TER-1
(“PO” meter) reading becomes 1500 watt.
12. Release the
PTT
switch.
13. The ALC voltage adjustment is now completed.
A
bouT
The
ATT S
wiTch
The
VL-2000
requires input drive power of 80 -
100 watts.
When connect the exciter having exceed 100
watts PEP (such as our
FT
DX
9000D/Contest
,
FT
DX
5000
, or
FT-2000D
), set the
ATT
switch on
the
VL-2000
front panel to “on” position to reduce
the input power of the
VL-2000
.
F
An
o
perATion
The
VL-2000
cooling fans are thermostatically
controlled.
It turns at low speed at the time of the
transmission start, and then fan speed rises in ac-
cordance with the temperature rise in the case.
The cooling fan operation links the
OPERATE
switch. When turn “off” the
OPERATE
switch
(mean disabling the Linear Amplifier), the cooling
fan turns “off” for enabling the quiet monitoring.
FCC ID: K6620321X70
Vertex Standard Co., Ltd.
