Fostex FM-3 - Manual (Page 12)

1. [INPUT] connector (1 through 3)
Each connector is used to connect an external audio
device or microphone.
Connector: XLR-3-31 type
Left side panel section
3. [TO ST BUSS] switch (ON / OFF)
This switch selects whether or not the input signal from
the [AUX IN] connector is sent to the stereo buss.
To send the [AUX IN] signal to the stereo buss, set
the switch to ON. When the switch is set to OFF, the
[AUX IN] signal is not sent to the stereo buss.
Regardless of the switch setting, you can monitor the
[AUX IN] signal via headphones.
2. [AUX IN] connector
Used to connect a mixer or audio device.
Not only you can monitor the input signal of this
connector, you can send the signal to the stereo buss
to mix with the main input signals (selectable with the
[TO ST BUSS] switch).
Connector: XLR-5-51 type
7. [DC OUT 7.2-24V] connector
This connector outputs power at DC 7.2 ~ 24 V / 0.5
A for a wireless receiver, etc.
It outputs power when the unit is powered on.
Connector: Hirose 4-pin HR10A-7R-4S (female)
6. [DC IN 10-24V] connector
Used to connect the supplied AC adaptor (or an
external battery).
Connector: XLR-4-32 type (male)
1
2
3
4 GND
NC
NC
DC 10-24V
1
2
3
4 GND
Lch HOT
Lch COLD
Rch HOT
5 Rch COLD
1
2
3 GND
HOT
COLD
1
2
3
4 GND
NC
NC
DC7.2 to 24V
4. Input select switches (LINE / MIC)
Each switch should be set appropriately according to
the input signal source.
DM
P48
No microphone power is supplied. When you con-
nect a dynamic microphone, set the switch to DM.
48-volt phantom power supply mode.
A 48 V power is supplied to the hot and cold terminals
of the [INPUT] connector.
T12
T12 or AB power supply mode. A 12 V power is sup-
plied to the hot terminal of the [INPUT] connector.
5. Microphone power supply switches (T12 / DM /P48)
Each switch sets whether or not supplying the
microphone power.
MIC
You should set the switch to MIC when a microphone
is connected to the input connector. You can supply
the microphone power when connecting a condenser
microphone (see “Microphone power supply switch”
below).
LINE
You should set the switch to LINE when a line-level
source is connected to the input connector. When it
is set to LINE, the microphone power supply is auto-
matically turned off regardless of its setting.
<Memo>: If you do not need T12 power supply,
you can disable the power supply via the input
status display (see page 16 for details).
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