Оценок - 4, средний балл: 4
(
)
)
|
Фрагмент инструкции
18 BIT DAC .. AES-EBU Audio DA .. Stand-alone .. Four Outputs AES3-ID .. Two Stereo Analog Outputs .. Error Detection .. Transformer Coupled Digital I/O .. FP Select BNC/Terminal Input .. Monitoring Distribution The LEI-547 accepts either AES3-1992 or AES3ID inputs and provides a total of four outputs of digital audio to AES3-ID specifications. In addition, it provides two sets of balanced low impedance analog outputs. Transformer coupled digital inputs and outputs are standard to eliminate the possibility of ground loops. Captive screw terminal blocks are used for the AES3-1992 while AES3-ID use BNC connectors. A front panel switch selects between BNC or screw terminal, (AES3-ID, AES3-1992). Sample rate LED’s show three rates, 48KHz, 44.1KHz and 32KHz. An error detection LED indicates any errors on the incoming signal. An AC power switch on the front panel allows the user to turn the unit on or off at will. The fuse is on the front panel for easy access.. The analog conversion is accomplished using a 1BIT Delta-Sigma converter with 18-BIT resolution. The output cells employ a unique cross-coupled design for precise amplitude and phase matching. The digital signal path uses state-of-the-art integrated circuits. The data is re-sliced and re- clocked for jitter attenuation. Sample rate is automatically detected and indicated by front panel LEDs. Data errors are also detected and reported by a red LED on the front panel. The 500 series is housed in the same case as the well accepted 700 series. A black front panel distinguishes between the two series. Three 500 or 700 series can be mounted in the PRT-700 rack tray. LINKELECTRONICS, INC. .. 2137 Rust Avenue .. Cape Girardeau, MO 63703-7668 Phone 573 334 4433 .. FAX 573 334 9255 MODEL LEI-547 AES/EBU DIGITAL AUDIO TO ANALOG CONVERSION SPECIFICATIONS INPUTS: Number:............................................................Two (selectable) Interface: ....................................................AES3-1992 (twisted-pair) ................................................................. orAES3-ID (BNC) Format: ..................................................... Bi-Phase Mark Encoded Impedance: ........................................................... 110. or 75. Sampling Frequency Range: ........................................... 30kHz TO 50kHZ Level: ............................................................. 200mV Minimum DIGITAL OUTPUTS: Number:............................................................. Four,AES3-ID Format: ..................................................... Bi-Phase Mark Encoded Impedance: .......................................................... 110. OR 75. Level: ................................................................ 4.2Vp-p TYP. Jitter: .................................................................... <0.02UI Connectors: .................................................................. BNC ANALOG OUTPUTS: Number:................................. Four, Two Left Channels and Two Right Channels Impedance: .................................................................. 66. S/N Ratio: ................................................................. >80dB Frequency Response: ........................................... ±0.5dB, 20Hz to 20KHz Total Harmonic Distortion: .....................................................0.003% Crosstalk:.................................................................. >85dB DC Offset: .................................................................. >2mV INTERNAL ADJUSTMENTS: Output Analog Audio Level, Left:.......................................... Resistive Trim Output Analog Audio Level, Right: ........................................ Resistive Trim DIGITAL TO ANALOG CONVERSION: Method: ......................................................... 1-BIT, Delta-Sigma Resolution:................................................................. 18-BIT Over-Sampling Ratio: ..........................................................128X Modulation Order: ................................................................3 FRONT PANEL INDICATORS: Power Indication: .........................................................Green LED Error/No Signal:........................................................... Red LED Sample Rate Indication: ............................. 48KHz, 44.1KHz, 32KHz, Green LEDs FRONT PANEL CONTROLS Power On/Off: .......................................................... Push Button Input Select:................................................... AES3-1992 or AES3-ID MECHANICAL: Height: ..................................................................... 1 Inch Width: ................................................................. 5.5 Inches Depth: ................................................................ 9.25 Inches Weight: ................................................................2.5 Pounds LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 637...