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3
shielded cables). Adjust Mic/Line switches as required for
incoming
signal level.
3. If phantom–powered condenser microphones are used,
turn
on the FP410E’
s Phantom Power switch. NOTE: With
condenser microphones other than Shure, verify that volt-
age
and source resistance requirements are compatible.
4.
Connect one or both of the FP410E Outputs to the
following
mixers, amplifiers or recorders. Make certain each Output
Mic/Line
switch is in the proper position for the desired
out
-
put
levels..
5. If an unbalanced aux–level output is needed, connect it to
the
T
ape Out jack.
6.
If additional FP410E mixers are to be linked to increase
the
number of microphone inputs, connect them by means of
the
Link In and Link Out jacks. Connect the LINK
OUT of the
first
mixer to the LINK IN of the next mixer
, and so on. Leave
the
LINK IN jack of the
first
mixer and the LINK OUT jack of
the
last
mixer unconnected. NOTE: Jacks are for linking
only,
not for audio inputs or outputs.
7.
If headphone monitoring of the FP410E mixed signal is re
-
quired, connect mono or stereo headphones to one of the
front–panel Phone jacks (
1
/
4
–inch or 3.5 mm). Adjust the
Phone control knob for the desired loudness (after setting
the
microphone Channel
and Master Gain controls accord
-
ing
to
Operation
section).
8.
T
o monitor an external signal source, connect it to the rear–
panel
Mon
In jack and pull the Phones control knob outward.
Adjust the Phones control and/or the external source level
control
for the desired loudness.
Operation
1.
T
urn on the Power
switch and set the Manual/Auto switch to
Manual.
2.
Set the Peak/VU meter to Peak or VU as desired.
3.
The
1 kHz internal tone oscillator can be used to help align
the
following equipment levels (master mixer
, amplifier
, re
-
corder,
etc.) to the output level of the FP410E. The tone os
-
cillator is activated by pulling the Master gain control out-
ward.
Its level at the FP410E output is set by the Master gain
control.
After setting
equipment levels, turn of
f the tone os
-
cillator
by pushing the Master gain control inward.
4.
“T
alk” the microphone connected to the FP410E Channel 1
input, and slowly raise the Channel 1 Gain control to the
point where the green LED flickers regularly with normal
speech, and the red LED only occasionally with louder
speech peaks.
5. Set the other FP410E channel gains in the same manner
.
6. Set the Flat (—)/Low–Cut (/
) switches adjacent to each
Gain
control as required. The low–cut position reduces pick
-
up
of low–frequency room noise.
7. Set the Manual/Auto switch to Auto. In about one second,
unused
microphone inputs will turn of
f and the level of an
in
-
dividual
talker
’
s voice will rise above the background noise
and
reverberation to become clearer and more intelligible.
8.
Adjust the FP410E
Master Gain control for the desired out
-
put
level, as indicated by the Peak or VU meter
, or by the fol
-
lowing
equipment.
9. The FP410E is now ready for operation.
MODIFIABLE FUNCTIONS
The
FP410E is ready for automatic or manual operation as
supplied.
Additional versatility is provided by easily accessible
switches visible when the battery compartment is removed.
Note
that the switches are
all in the “up” position as supplied;
changes are made by moving the switch or switches down-
ward.
The switch positions
are illustrated by a label below the
battery
compartment (see Figure 2).
VU
Meter
(Switch No. 1). Change the VU meter
, supplied cal
-
ibrated
for +4 dBm = 0 VU, to +8 dBm = 0 VU by moving this
switch downward. (This switch does not affect calibration of
the
LED output level meter in the Peak position.)
Limiter Threshold (Switch Nos. 2, 3). Change the limiter
threshold,
the output level at which limiter action begins, from
the
factory–set +16 dBm to either +8 dBm, +4 dBm or 0
dBm
output
level by moving these switches as shown in Figure 2.
Off–Attenuation (Switch No. 4). Change the off–attenua-
tion
from 13 dB to infinite (
∞
) by moving
this switch downward.
With
the 13 dB
setting, an unused microphone is 13 dB lower in
level
than when it is activated. With
the
∞
setting, an unused
microphone is completely of
f.
Hold
T
ime
(Switch No. 5). Change the hold time, the duration
of time an activated microphone (which is not locked on) re-
mains
on after the talker stops talking,
from 0.4 seconds to 1.0
second
by moving this switch downward.
Last Mic Lock–on Defeat (Switch No. 6). The last mic
lock–on
feature keeps the most recently activated microphone
open
until a newly activated microphone takes its place. It can
be
defeated so that all
microphones automatically turn of
f after
the
hold time by moving this switch downward.
Phantom Power (Switch No. 7). Phantom power for con-
denser
microphones,
normally 14 V
, can be changed to 48 V
by
moving this switch downward.
CAUTION:
Make certain
the
R
METER
0
V
U
LIMITER
THRESHOLD
OFF-
ATTEN
LAS
T M
I
C
LOCK-ON
PHANTOM
POWER
+4
+16
1
3 d
BIN0.
4 S
EC +14 V
+8 OUT1.
0 S
EC +48 V
+8
+4
0
H
OLD
TIME
MODIFIABLE FUNCTION SWITCHES
FIGURE 2