Shure FP410 Mode D'emploi page 6

SPECIFICATIONS
Measurement Conditions (unless otherwise specified): Line
voltage 120 Vac, 60 Hz (FP410E: 230 Vac, 50/60 Hz); full gain;
1 kHz, one channel activated; output terminations: Line 600
τ τ
Mic 150 , Tape 50 k , Phones 200
sleeve); Auto mode
Frequency Response (controls centered)
25 Hz to 20 kHz, +0.5,--2 dB (any input to any output)
Voltage Gain
Input Line Mic
Low--im- 93 dB 43 dB
pedance
mic
τ
(150 )
Line 42 dB --8 dB
Monitor —
Inputs
Impedance
Designed
Input for use with
Mic τ
19--600
Line  τ
10 k
Monitor  τ
1 k
Outputs
Impedance
Designed
Output for use with
Mic Any low--im-
pedance
mic input
Tape τ
>10 k
Head- τ
8--200 ,
phones
τ
200 rec-
ommended
Line τ
600
Total Harmonic Distortion (controls centered [5], +4 dBm at
Line output)

0.25%, 50 Hz to 20 kHz
τ Ε
tip--sleeve and ring--
Output
Head-
phone Tape
97 dB 74 dB
46 dB 23 dB
— 9 dB —
Actual (In- Input Clip-
ternal) ping Level
τ --15 dBV
900
τ To >+26
66 k
dBV
τ +21 dBV
25 k
Output
Actual (In- Clipping
ternal) Level
τ --31 dBV (28
0.5
mV) min.
τ --2 dBV (800
1 k
mV)
τ +6 dBV (2.0
500
V)
τ +19 dBm
100
(6.9 V) min.
Hum and Noise
Equivalent Input Noise
Equivalent Input Hum and Noise
τ
,
Output Noise (300 Hz to 20 kHz; channel controls full coun-
terclockwise)
Master full counterclockwise
Master full clockwise
Output Hum and Noise (20 Hz to 20 kHz; channel controls
full counterclockwise)
Master full counterclockwise
Master full clockwise
Common Mode Rejection
65 dB minimum with input of --20 dBV at 100 Hz
Polarity
Pin 2 of balanced inputs and outputs are in phase with tip
connections of unbalanced inputs and outputs
Input Channel Activation
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hold Time . . . . . . . . . . . . .
Decay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off- -Attenuation
13 dB, fixed (switchable to
creases as additional mixers are linked)
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no
damage. Microphone inputs are not damaged by signals up
to 3 V; Line and Monitor inputs by signals up to 20 V
Low- -Cut Filters
6 dB/octave rolloff below 170 Hz
Limiter
Threshold . . . . . .
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Time . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicator . . . . . . . . . . . . . .
Meter
VU Meter Calibration: 0 VU = +4 dBm (switchable to +8
dBm)
Peak Meter:
Rise Time: 2.0 msec time constant (0.9 msec/LED step)
Decay Time: 180 msec time constant (83 msec/LED step)
Tone Oscillator
1 kHz, 10%, THD <0.5%
Phantom Power
14 Vdc open--circuit, 1 k
in Mic position only (internally switchable to 48 Vdc, 4.5 k
series resistance)
6
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0.4 sec (switchable to 1.0 sec)

)(single mixer; attenuation in-
+16 dBm (switchable to +8, +4, 0 dBm)
Lights when limiting is occurring
τ
series resistance, input switches
--128.5 dBV
--128.5 dBV
--88 dBV
--71 dBV
--74 dBV
--70 dBV
4 msec
0.5 sec
3 msec
350 msec
τ