ADC ADDC1 instruction manual Features

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Features

•Two analog-to-digital conversion channels

•Two XLR balanced analog inputs providing high-performance over a 43 dB range

•-14 dBu to +29 dBu input sensitivity range (at 0 dBFS)

•Two 0 dB, 10dB, and 20 dB first-stage gain switches (1 per channel)

•Two 41-detent gain controls with a 20 dB range (1 per channel)

•Two 10-turn gain calibration controls with a 20 dB range (1 per channel)

•Benchmark 9-segment dual-range digital LED meters

•Sample Rate LED indicators

•Conversion at 44.1, 48, 88.2, 96, 176.4, and 192 kHz

•Versatile Auto and Internal clock modes

•Multifunction clock input with auto-recognition of AES, SPDIF, Word Clock, or Super Clock

•Word Clock output

•Total jitter immunity with Benchmark’s, phase-accurate UltraLock™ technology

•Simultaneous output at two different sample rates

•Simultaneous 16 and 24-bit outputs

•Four digital outputs (1 XLR, 2 Coax, 1 optical)

•AES/EBU, ADAT, and ADAT S/MUX2, and ADAT S/MUX4 output formats

•THD+N = -104 dB, 0.00063% @ -3 dBFS input, SNR 121 dB A-weighted

•Reliable and consistent performance under all operating conditions

•Internal 115 V, 230 V, 50-60 Hz international power supply with very wide operating range

•Low radiation toroidal power transformer significantly reduces hum and line related interference

•Meets FCC Class B and CE emissions requirements

ADC1 Instruction Manual

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Contents Benchmark ADC1 Channel 24-bit 192-kHz Audio Analog-to-Digital ConverterSafety Information Federal Communications Commission FCC Notice OnlyContents Overview Page Features Clock Reference Input ConnectionsBalanced Analog Line Inputs To adapt to unbalanced sourcesDigital Outputs AES/EBU XLR OutputOptical Output Adat S/MUX4 Optical Output Mode Adat Optical Output ModeAdat S/MUX2 Optical Output Mode SPDIF/AES BNC Main and Aux OutputsAC Power Entry Connector Word Clock Reference OutputFuse Holder Operation Mode Switch and DisplayTo program the conversion mode Programming the OutputsTo synchronize with an external clock source Selecting a Fixed Frequency Using the Internal Clock SourceReading Sample Rates off of the Mode Display To select a fixed sample frequency on the Main OutputsAdat or AES/EBU on the Optical Output Resetting the ADC1 to Factory Default SettingsProgramming the Aux Output Meter DisplayAdjusting Input Gain First Stage GainSecond Stage Gain Controls Rack Mounting Sample Rate is the Key that Controls S/MUX Using Adat S/MUXProper S/MUX Identification is a Must MUX should not be used for Sample Rate ConversionUltraLock … What is It? Problem #1 Put UltraLock converters to the testWhat UltraLock converters cannot do Performance Frequency ResponseInter-Channel Phase Response KHz LPF unweighted THD+N vs. Level, 1 KHz32K B-H FFT, Idle Channel Noise 32K B-H FFT, -3 dBFS, 1 KHz 32K B-H FFT, -3 dBFS, 10 KHz Specifications Analog Audio InputsWorldclock Reference Output Digital Audio Outputs Audio Performance Group Delay Latency LED Status IndicatorsAC Power Requirements DimensionsWeight Page Warranty Information Benchmark 1 Year WarrantyBenchmark Extended 5* Year Warranty Benchmark Extended WarrantyBenchmark Media Systems, Inc