Benchmark ADC16 - Analog to Digital Converter (FireWire)

Benchmark ADC16 - Analog to Digital Converter (FireWire)

Benchmark ADC16 - Analog to Digital Converter (FireWire)

B&H # BEADC16SILFW MFR # 500-14500-105
Benchmark ADC16 - Analog to Digital Converter (FireWire)

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Product Highlights

  • 16-Channel A/D Conversion
  • Transformerless Balanced Analog Inputs
  • FireWire 400 Interface
  • Input Gain Trimpots with 20dB Range
  • LED Meters with Peak Hold
  • Supports Wide Range of Sample Rates
  • Multi-Function Clock Input
  • Phase-Accurate Jitter-Free UltraLockDDS
  • Multiple Optical Out Formats
  • Universal Internal Power Supply
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  • 1Description

The ADC16 from Benchmark Media is a sixteen-channel, analog-to-digital converter with a flexible input/output routing solution. In keeping with the company's "pure audio" philosophy, the unit utilizes the UltraLockDDS clock system for virtually indistinguishable jitter. Sixteen transformerless analog inputs with 20 dB gain controls feed the eight converters that feature their own matched-impedance transmission lines, and jitter distortion is always a comfortable 135 dB below the level of music.

By avoiding an asynchronous sample rate conversion system, the converter is able to reduce latency and provide the most direct path from the analog to digital converter to the digital outputs. The UltraLockDDS clock system is based on technology originally intended for high-frequency RF communications systems. It features a fixed-frequency, low-phase noise oscillator with temperature compensation capable of +/-2 PPM frequency accuracy.

The UltraLockDDS system can lock to any sample rate between 28 and 200 kHz almost instantly and is designed with pull-up/pull-down sample rates to handle film or video transfers flawlessly. Jitter is always attenuated to levels that are well below audibility and jitter performance is identical in all modes of operation. A multi-format clock input automatically recognizes AES/EBU, S/PDIF, Wordclock, or Super Clock signals and is used to synchronize the digital outputs. The digital outputs can be clocked to the unit's high-precision internal clock and will automatically revert to the internal clock source if an external clock is interrupted.

With the installed FireWire card the unit can function as a sole interface for a FireWire-equipped DAW. For older systems, connection is possible via the ADAT or coaxial outputs to systems that support those input formats. Front-panel, nine-segment, single-sample accurate meters are included on each channel for monitoring of input levels. The meters can be set to display in 6 dB or 1 dB increments, and in both cases can be put into "peak-hold" mode, which will hold the highest-valued sample until the mode is reset. "Press-and-Hold" buttons are provided for critical settings to avoid any accidental resetting of the unit.

Sixteen channels of analog-to-digital conversion
Two DB25 connectors for transformerless balanced analog input
Input gain trim pots for each channel provide high performance over 20 dB range
Wide input sensitivity range
Nine-segment dual-range digital LED meters with "peak-hold"
Conversion at standard sample-rates (44.1, 48, 88.2, 96, 176.4, and 192 kHz) and will also lock to non-standard rates (anything between 28 kHz and 200 kHz)
Multi-function clock input with auto recognition of AES, S/PDIF, Wordclock, or Super Clock
Wordclock output
Total jitter immunity with the company's phase-accurate UltraLockDDS technology
Four sets of digital outputs (balanced AES, coaxial, optical, FireWire)
Independently controlled sourcing (A/D or DAW) for each set of digital outputs
AES/EBU, ADAT, and ADAT S/MUX2 and S/MUX4 optical output formats
"Press-and-Hold" buttons to prevent catastrophic incidents
Internal international power supply with very wide operating range
Meets FCC Class B and CE emissions requirements
In the Box
Benchmark ADC16 - Analog to Digital Converter (FireWire)
  • AC Power Cable
  • 2 x Spare Fuses
  • One (1) Year Warranty to Original Purchaser
  • Table of Contents
    • 1Description
    Analog Audio Inputs
    Connectors 2 x 25-pin D-Sub for 16 channels (Tascam analog pinout)
    Input Impedance 200kΩ balanced
    100kΩ unbalanced
    Sensitivity Maximum Gain: -14 dBu @ -20 dBFS
    Factory Preset Gain: +4 dBu @ -20 dBFS
    Minimum Gain: +9 dBu @ -20 dBFS
    Maximum Input Level Maximum Gain: +6 dBu @ 0 dBFS
    Factory Preset Gain: +24 dBu @ 0 dBFS
    Minimum Gain: +29 dBu @ 0 dBFS
    CMRR >90 dB @ 1 kHz
    Common Mode Trim Dual Frequency
    RF Filter
    Transient Protection
    Over-Voltage Protection
    AC Coupled
    Digital Audio Output
    Connectors 2 x 25-pin D-Sub for 16 channels AES3 (Tascam AES pinout)
    8 x RCA coaxial for 16 channels AES3
    8 x TOSLink optical for 16 channels of AES3, ADAT, ADAT S/MUX2 and S/MUX4
    Sample Rate Up to 200 kHz
    Bit Depth 24-bit
    Output Impedance D-Sub: 110Ω
    Coaxial: 75Ω
    Output Level D-Sub: 4 Vpp into 110Ω
    Coaxial: 1.0 Vpp into 75Ω
    Output Protection Transformer Coupled
    DC Blocking Capacitors
    Transient Protection
    Over-Voltage Protection
    RF Filters
    Clock Reference
    WC/SC/AES Clock Reference Input 1 x BNC
    Impedance: 75Ω
    Formats: Wordclock, 256x Super Clock, AES
    Sensitivity with Wordclock Input: 320 mVpp
    Sensitivity with Super Clock Input: 500 mVpp
    Sensitivity with AES Input: 150 mVpp
    AES Clock Reference Input Connector: Digital In 1 on AES DB-25
    Impedance: 110Ω, balanced
    Formats: AES, S/PDIF (professional or consumer)
    Sensitivity: 150 mVpp
    Input Protection WC/SC/AES
    RF Filter
    Transient Protection
    Over-Voltage Protection
    AC Coupled
    UltraLockDDS Jitter Attenuation
    AES
    RF Filter
    Transient Protection
    Over-Voltage Protection
    Transformer Coupled
    DC Blocking Capacitor
    UltraLockDDS Jitter Attenuation
    Performance
    Group Delay Time Delay (Analog Input to Digital Output)
    1.49 ms @ 44.1 kHz
    1.37 ms @ 48 kHz
    0.75 ms @ 88.2 kHz
    0.68 ms @ 96 kHz
    0.37 ms @ 176.4 kHz
    0.34 ms @ 192 kHz
    Frequency Response @192 kHz
    2 Hz to 94 kHz, -3 dB, +0.0 dB
    20 Hz to 20 kHz, +/- 0.02 dB
    @96 kHz
    1 Hz to 47 kHz, -3 dB, +0.0 dB
    20 Hz to 20 kHz, +/- 0.01 dB
    @48 kHz
    1 Hz to 23.6 kHz, -3 dB, +0.0 dB
    20 Hz to 20 kHz, +/- 0.01 dB
    SNR 121 dB, A-weighted, 0 dBFS = +16 to +29 dBu
    119 dB, unweighted, 0 dBFS = +16 to +29 dBu
    117 dB, A-weighted at maximum gain, 0 dBFS = -10 dBV
    THD + N 0.00089% (-102 dBFS, -101 dB), 1 kHz @ -1.0 dBFS
    0.00063% (-107 dBFS, -104 dB), 1 kHz @ -3.0 dBFS
    0.00079% (-105 dBFS, -102 dB), 20 Hz to 20 kHz test tone @ -3.0 dBFS
    Passband Ripple +/- 0.001 dB @ 44.1, 48 kHz
    +/- 0.003 dB @ 88.2, 96 kHz
    +/- 0.007 dB @ 176.4, 192 kHz
    Crosstalk -96 dB @ 20 kHz
    -120 dB @ 1 kHz
    <-135 dB @ 20 Hz
    Jitter Jitter tolerance with no measurable change in THD+N performance
    >12.75 UI sine 100 Hz to 10 kHz
    >3.5 UI sine @ 20 kHz
    >1.2 UI sine @ 40 kHz
    >0.4 UI sine @ 80 kHz
    >0.29 UI sine @ 90 kHz
    >0.25 UI sine above 160 kHz
    Digital Signal Maximum Amplitude of Jitter-Induced Sidebands: <-116 dB (10 kHz 0 dBFS test tone, 12.75 UI sinusoidal jitter at 1 kHz)
    Maximum Amplitude of Spurious Tones with 0 dBFS Test Signal: -130 dBFS
    Maximum Amplitude of Idle Tones: -130 dBFS
    General
    DAW Card Slot Audio Channels: 16 Input/16 Output
    Sample Rates: Up to 200 kHz
    Output Word Length: 24-bits
    External Interface: FireWire
    Other Functions Maximum Amplitude of AC Line Related Hum and Noise: -140 dBFS
    Inter-Channel Differential Phase (Stereo Pair): +/- 0.25° @ 20 kHz
    Inter-Channel Differential Phase (Between ADC16 Units): +/- 0.25° @ 20 kHz
    Maximum Lock Time After Fs Change: <8 seconds
    Mute on Sample Rate Change: Less than 8 seconds duration
    Mute on Loss of External Clock: After 5 seconds of no clock
    Mute on Lock Error: After 5 seconds of no lock
    Power Requirements 90~264VAC, 47-63 Hz, internal universal power supply
    Dimensions (WxDxH) 19 x 12.5 x 1.73" (483 x 318 x 44 mm)
    Weight 7 lb (3.2 kg)

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