SUBJECT TO AVAILABILITY
Summary
The Belar DSD-1A is a precision FM stereo decoder. It produces 48 kHz AES/EBU digital stereo audio by digitally demodulating analog stereo composite signals. The DSD-1A also provides balanced analog Left, Right, L + R, and L – R outputs on XLR connectors.
Features
The DSD-1A features two front-panel peak level indicators to maintain constant transmission levels. The user adjustable ACTIVITY LED monitors composite activity, while the fixed OVERLOAD LED warns of possible overload.
The DSD-1A is suitable for applications that require digital stereo signals or precision analog left and right stereo signals. Such applications include: obtaining a digital input for use with digital FM exciters, demodulating composite STL’s for AM stereo, obtaining digital audio for digital transmission of house monitors, etc.
Technical Specification
Technical Specification
Input Level
2.8V- 5.7V P-P composite
Input Impedance
100 kohm, unbalanced, BNC connector
Outputs:
Digital, Left and Right
AES/EBU, 48 kHz
Analog Left, Right, L+R, L-R
Audio
Active 50 ohm Differential Output
Level: +10 dBm into 600 , XLR connector
De-emphasis
flat, 50 or 75 µsec (selectable)
Separation
Left to Right
80 dB, 10 Hz to 15 kHz
Right to Left
80 dB, 10 Hz to 15 kHz
Crosstalk:
L + R to L – R (matrix)
80 dB min
L – R to L + R (matrix)
80 dB min
L + R to L – R (direct)
90 dB min
L + R to L – R (direct)
90 dB min
SCA to L + R
90 dB min
SCA to L – R
90 dB min
SCA Interference
90 dB min
Analog Audio Output Specifications
Frequency Response, Left and Right
±0.05 dB flat, 50 to 15 kHz
±0.25 dB de-emphasized
Signal-to-Noise Ratio, with de-emphasis
Left and Right
90 dB
Harmonic Distortion
< 0.01% 50 to 15 kHz
Intermodulation Distortion
< 0.01% (SMPTE)
Power
100-240 VAC, 50-60 Hz
New in 2015 – 3 Year Factory Warranty to all Belar Products
© Copyright 2000 Belar Electronics Laboratory, Inc. All rights reserved.
