Shure SCM810 User Manual page 9

Measurement Conditions (unless otherwise specified): Line
voltage 120 Vac, 60 Hz (SCM810) or 230 Vac, 50 Hz
(SCM810E); full gain; 1 kHz, one channel activated; source
Ω
impedances: Mic 150 , Line 150
Ω (
Phones 300 tip-sleeve and ring-sleeve), Direct Out 10 k
Auto mode, equalization controls adjusted for flat response
Frequency Response (Ref 1 kHz, channel controls centered)
50 Hz to 20 kHz 2 dB; -3 dB corner at 25 Hz
Voltage Gain (typical, controls full clockwise)
Input Line
Low-impedance 80 dB
mic (150 Ω)
Line 40 dB
Aux 44 dB
Send/Return 20 dB
Inputs
Impedance
Designed
Input for use with
19-600 Ω
Mic
Line
2 kΩ
Aux
2 kΩ
Send/Return
2 kΩ
Outputs
Impedance
Designed
Output for use with
>600 Ω
Line
8-200 Ω,
Head-
60 Ω recom-
phones
mended
Direct Out >2 kΩ
Send/Return >2 kΩ
Total Harmonic Distortion
<0.1% at +18 dBV output level, 50 Hz to 20 kHz (through 20
Hz-20 kHz filter; Input 1 and Master at 5, all other controls full
counterclockwise)
Hum and Noise
Equivalent Input Noise . . . . . . .
Equivalent Input Hum and Noise . . . . . . . . . . . . . . . . . . . . . .
through 20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter; chan-
nel controls full counterclockwise))
Master full counterclockwise
Master full clockwise . . . . . . . . . . . . . . . . . . . . . .
Common Mode Rejection
>70 dB at 1 kHz
SPECIFICATIONS
Ω
; terminations: Line 10 k
Output
Head- Direct Out
phones
88 dB 34 dB
48 dB –6 dB
52 dB -–
28 dB -–
Actual Input
(typical) Clipping
Level
-15 dBV
10 kΩ
10 kΩ +22 dBV
10 kΩ +22 dBV
+18 dBV
10 kΩ
Actual Output
(typical) Clipping
Level
60 Ω
+18 dBV
300 Ω
+12 dBV
1 kΩ +18 dBV
1 kΩ +18 dBV
-125 dBV (150 Ω source;
through 400 Hz - 20 kHz filter)
-123 dBV (150 Ω source;
. . . . . . . . . . . . . . . -90 dBV
-70 dBV
Polarity
Mic/Line, Send inputs to all outputs are non-inverting; Aux
input to all outputs is inverting
Ω
Input Channel Activation
,
Ω
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
;
Hold Time . . . . . . . . . . . . .
Decay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Attenuation
15 dB (switchable to
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
Equalization
Low-frequency . . . . . . . . . . . . .
High-frequency
Limiter
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threshold . . . . . . . . . . . . . . . .
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Time . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicator . . . . . . . . . . . . . .
Input LEDs
Green on channel activation, red at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 k
DIN 45 596
Operating Voltage
SCM810: 120 Vac rated nominal (see V oltage Selection
for 230 Vac operation), 50/60 Hz, 200 mA
SCM810E: 230 Vac rated nominal (see V oltage Selection
for 120 Vac operation), 50/60 Hz, 200 mA
Temperature Range
Operating . . . . . . . . . . . . .
Storage . . . . . . . . . . . . . . .
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D
3 1
(1 / x 19 x 12 /
4
Net Weight
4.3 kg (9 lb 9 oz)
Certifications
SCM810: Listed by Underwriters Laboratories, Inc., listed
as Certified by
SCM810E: Conforms to European Union directives, eligible
to bear CE marking; VDE GS-Certified to EN 60 950; meets
European Union EMC Immunity Requirements (EN 50
082-1, 1992): RF radiated (IEC 801-3): meets Criterion A,
ESD: meets Criterion B, EFT (IEC 801-4): meets Criterion B
Replacement Parts
Knob, Master & Phones (white)
Knob, Channel Gain (blue)
Line (Power) Cord (SCM810)
Line (Power) Cord (SCM810E)
Link Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*For systems requiring other mains connectors, obtain a power cord
with an IEC 320 type mating connector for connection to the SCM810,
and an appropriate plug on the other end for connection to the mains.
The supplied cord uses Harmonized IEC Cordage with color coding as
follows: Brown = Line, Blue = Neutral, Green/Yellow = Ground.
9
0.4 sec (switchable to 1.0 sec)
)
6 dB/octave cut, adjustable
corner from 25 to 320 Hz
. . . . . . . . . . . . . . 6 dB at 5 kHz, 8 dB at
10 kHz, shelving
Switchable: off, +4, +8, +16
(dBm at output)
Lights red when limiting occurs
Ω
series resistance per
0 to 60 C (32 to 140 F )
-30 to 70 C (-22 to 158 F)
inches)
2
Canadian Standards
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
4 msec
0.5 sec
Peak
2 msec
300 msec
Association;
95A8238
95B8238
95A8389*
95A8247*
95A1143