Yaesu FT DX 9000MP CONTEST - DATA MANAGEMENT OPERATION, Operation Manual

Page: 90 / 180

Page 88 FT
DX
9000MP O
PERATION
M
ANUAL
Figure 1
Figure 2
P
HANTOM
V
OLTAGE FOR
C
ONDENSER
M
ICROPHONES
For powering a studio-quality condenser microphone connected to the front panel’s XLR (“Cannon”) connector, it is
possible to enable a 48-volt DC line connected to that jack. Because the improper enabling of this voltage could cause
damage to other microphone types, the simple process for enabling the voltage has been made somewhat complicated, so as
to prevent the voltage from being enabled by accident.
1. Turn the front panel [
POWER
] switch Off, then Turn
the FPS-9000H ’s [ POWER
] switch Off.
2. Unplug the DC power cable from the rear panel [ DC
IN
] jack.
3. Referring to Figure 1, remove the eight screws from
the sides of the transceiver case.
4. Now remove the six screws shown in Figure 1 from
the bottom case.
5. Referring to Figure 2, locate jack J28 on the AF Unit,
and remove the jumper plug which is connected across
pins 2 and 3 of J28.
6. Connect the just-removed jumper plug so that it now
is connected across pins 1 and 2 of J28 (instead of the
original position across pins 2 and 3).
7. Replace the six screws to affix the bottom case, and re-
place the eight screws from the sides of the transceiver
(these screws were removed in steps 3 and 4 above).
8. Connect the DC power cable to the rear panel’s [
DC
IN
] jack.
9. Turn the FPS-9000H ’s [ POWER
] switch on, then
turn the front panel [
POWER
] switch on.
10. If the above process has been successfully completed,
you will observe that a small red LED just above and
to the right of the XLR connector is now illuminated.
If this LED is not glowing red, please check the status
of the jumper plug once more.
11. If the red LED is glowing properly, the modification
to enable the phantom 48 Volt line is now complete.
Enable
48-volt Supply Line
Disable
Move
Jumper Plug
(Inside the Transceiver)
N N
N N N
O O O O OTE TE TE TE TE
When opening/closing the case, take care with your screwdriver not to short out internal components, or touch
them in a way that will cause them to short out against other components.
Avoid touching internal components with your hand, as static electricity can cause damage to certain compo-
nents if appropriate anti-static bench techniques are employed.
Only engage the phantom power when you have no alternative but to use a condenser microphone requiring such
voltage. The wide availability of studio-grade Dynamic microphones (that do not require the phantom voltage)
generally makes the use of the phantom voltage unnecessary over the life of the transceiver. Because damage can
occur if the phantom voltage is enabled on a microphone not requiring it, we strongly recommend that the
jumper plug at J28 (AF Unit) be left in its original position across pins 2 and 3.
The phantom voltage capability of the
FT
DX
9000MP is disabled at the factory, and the lack of this voltage is
not a “defect” or other condition covered by the Limited Warranty on this product. Accordingly, if you do not
feel capable of enabling the phantom voltage and ask a service shop to do so on your behalf, a service fee may
apply.
SSB/AM M SSB/AM M
SSB/AM M SSB/AM M
SSB/AM M
ODE ODE
ODE ODE ODE
T T T T T
RANSMISSION RANSMISSION
RANSMISSION RANSMISSION RANSMISSION