This
is a high performance Stereo Generator and 2 band automatic Audio
Processor built into a one- rack space unit. Its stereo separation
performance is higher than 60 dB with S/N higher than 85 dB. A high
sensitivity VU meter allows accurate measurement of audio input levels.
The two balanced audio inputs (XLR Connectors) are filtered from RF
interference. The very low distortion (typical 0.05 dB) makes this low
cost generator comparable in performance to the more expensive digital
equipment. In addition we have built in a 2 band Automatic Audio
processor so that the sound will always be at the optimum level without
the need of any regulation.
TECHNICAL
SPECIFICATIONS:
NSC1
Stereo Coder Specifications
L
& R Input connectors: XLR
female balanced
L
& R Input impedance: 600
Ω or 10KΩ internal selectable
L
& R Input level: 0dBm
± 3dB
Audio
filter response: ±
0.25dB 20Hz to 15KHz
Audio
filter attenuation: >48dB
@ 19KHz,>39dB to 60KHz
Pre-emphasis:
Flat /50 uS /75uS
internally selectable
Pre-
emphasis deviation from ideal curves: ±
0.2
Harmonic
distortion on encoded channels: <
0.1% (0.05% typ.)20Hz to 15KHz
S/N:
> 85dB rms
Stereo
separation: > 60 dB (
65dB type)
Pilot
frequency: 19KHz
±1Hz
Subcarrier
frequency: 38KHz
±2Hz
Subcarrier
generation: 4.864KHz
Crystal oscillator
Pilot
level: 8 to 12% internal
adjustable
Phase
difference 19/38KHz: 0°
± 2° internal adjustable
38KHz
suppression: >
60dB
CMRR:
> 60dB
Powering:
115 - 230 VAC rear panel
selectable
Power
consumption: 30
VA
Rack
dimension: 19”
1 standard unit
Weight:
6 Lbs ( 2.7 Kg.)
NSC1
Audio Processor Specifications
Audio
Processing:
2 Bands
AGC
Control
:
Fully
Automatic
Maximum
attenuation:
40dB
Maximum
Gain :
40dB
Noise
level (unweighted):
80dB
Distortion
at no limiting:
0,1%
Distortion
at max limiting:
1%
Attack
time:
< 5mS
Release
time:
800mS (typ.)
Low
audio frequency range:
30Hz - 500Hz
High
audio frequency range:
400Hz - 15KHz
