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Summary of Contents for Benchmark ADC16
- Page 1 Benchmark ADC16 Instruction Manual 16-Channel 24-bit 192-kHz Audio Analog-to-Digital Converter...
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Page 2: Table Of Contents
Balanced Analog Audio Inputs WC/SC/AES Clock Reference Input AES Clock Reference Input Balanced AES/EBU Digital Outputs Coaxial Digital Outputs Multi-Format Optical Digital Outputs DAW Card Slot Controls Status Indicators Meters Power Requirements Fuses Dimensions Weight ADC16 Instruction Manual – Rev A Page 2... -
Page 3: Overview
. The optional interface changes in sample rate. In 'WC' mode, the card will enable direct connectivity to a ADC16 will also follow changes in the type of computer and other devices. reference signal (AES, SPDIF, word clock, or super clock). -
Page 4: And S/Mux
The Benchmark UltraLockDDS™ system delivers consistent performance under all operating conditions. Users should not hesitate to lock the ADC16 to other clock sources. The UltraLockDDS™ will remove jitter from the external clock reference, and supply a clean clock to the internal A/D converters. -
Page 5: Features
Reliable and consistent performance under all operating conditions Internal 90 - 264 VAC international power supply Meets FCC Class B and CE emissions requirements Tested to EN 6100-6-2 for RF immunity ADC16 Instruction Manual – Rev A Page 5... -
Page 6: Front Panel
Meter Display - page 12 16 Dual-Range 9-Segment LED Meters, Driven from A/D Digital Outputs Meter Scale and Peak Hold - page 12 Settings: Scale Factor = 1 dB/step or 6 dB/step, Peak-Hold On/Off ADC16 Instruction Manual – Rev A Page 6... -
Page 7: Ac Power Switch
AC Power Switch DPDT (double-pole, double-throw) switch disconnects both sides of the AC line. When this switch is 'OFF', the ADC16 draws no power. When this switch is turned 'ON', the ADC16 will boot up and calibrate within 5 seconds. -
Page 8: Clock Settings
Word Clock, Super Clock, AES, SPDIF, and the optional 'DAW' interface card. The 'SAMPLE RATE' button sets the sample Clock Source rate when the ADC16 is in the 'INT' clock- source mode. This button is only active when 'Clock Source' Button the 'INT' LED is on. -
Page 9: Clock Status Indication
"INT" LED ON displayed on the LEDs. If no signal is present on the selected clock If the reference signal is good, the ADC16 will input, the corresponding 'Clock Source' LED lock within 8 seconds. The ADC16 will flash once per second, and the "INT' LED UltraLockDDS™... -
Page 10: Source For Digital Outputs
DAW and Back to Digital Outputs The optional 'DAW' card provides a bi- directional 16-chanel interface between the ADC16 and a DAW. Analog audio can be converted in the ADC16, sent to the DAW, mixed in the DAW and sent back out through the ADC16 to external D/A converters. -
Page 11: Optical Output Format
The 'press-and- hold' action prevents accidental changes. When ADAT is active, S/MUX is automatically enabled at all 2X and 4X sample rates (88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz). ADC16 Instruction Manual – Rev A Page 11... -
Page 12: Meter Display
LED. Short single-sample digital clipping events are often audible, and all 0-dBFS events should be avoided. The ADC16 has a very large dynamic range. It is wise to use some of this dynamic range to provide more headroom as insurance against clipping. -
Page 13: Rear Panel
75-Ω BNC Input - Accepts Word Clock, Super Clock, and AES Input - Auto Recognizing Word Clock Reference Output - page 19 75-Ω BNC Output - 2.5 Vpp into 75-Ω Load, DC Coupled ADC16 Instruction Manual – Rev A Page 13... - Page 14 Slot for Optional Interface Cards - page 19 http://www.BenchmarkMedia.com/ADC16/optional-interface-card AC Power Entry Connector - page 19 IEC Power Connector Fuse Holder - page 19 ® Requires two 0.5 Amp 5 x 20 mm 250 V Slo-Blo Type fuses ADC16 Instruction Manual – Rev A Page 14...
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Page 15: Analog Line-Level Inputs
+4 dBu @ -20 dBFS. Rear- panel trim pots ( ) allow adjustment over a 23-db range. At minimum gain, the Each channel on the ADC16 is equipped with sensitivity is +9 dBu at -20 dBFS. At 10-turn "INPUT LEVEL" trim-pots. These trim... -
Page 16: Aes Digital Audio I/O
3 and 4. cause data transmission errors, and should not be used to transmit digital audio. The ADC16 uses all 4 of the digital outputs on each DB-25 connector (for a total of 16 audio Data Format = AES/EBU professional channels on 8 digital outputs). -
Page 17: Coaxial Digital Audio Outputs
Coaxial Digital Audio Outputs The digital audio data at the ADC16's digital outputs can come from one of two sources: the ADC16's A/D converters ('A/D') or the optional interface card ('DAW') The ADC16 features eight coaxial digital outputs. There is one RCA coaxial connector The user can select digital output sources via for each pair of digital-audio output channels. -
Page 18: Optical Digital Audio Outputs
Word Length = 24 bits of audio. The 8 optical connectors on the Sample Rate = 150 to 200 kHz ADC16 carry two identical sets of data when Clock Source = Internal or External operating in ADAT 'S/MUX ... -
Page 19: Clock Reference Input
Clock Reference Input Slot for Optional Interface Cards An interface card can be installed in the ADC16. The card is installed in the slot to the left of the AC power input. This slot provides a bi-directional 16-channel interface to external devices such as a digital audio workstation (DAW). -
Page 20: Specifications
< -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 -130 dBFS signal Maximum Amplitude of Idle Tones -130 dBFS ADC16 Instruction Manual Page 20... -
Page 21: Group Delay (Latency)
Maximum Amplitude of AC line related Hum & Noise -140 dBFS Interchannel Differential Phase (Stereo Pair) +/- 0.25 degrees at 20 kHz Interchannel Differential Phase (Between ADC16 Units) +/- 0.25 degrees at 20 kHz Maximum Lock Time after Fs change < 8 seconds... -
Page 22: Balanced Analog Audio Inputs
Uses 'Digital In 1' on Top AES DB-25 Connector Pinout Tascam AES DB-25 Input Impedance 110-Ω Balanced Input Formats AES, S/PDIF - Pro. or Consumer Sensitivity 150 mVpp RF Filter Transient Protection Over-Voltage Protection Transformer Coupled DC Blocking Capacitor UltraLockDDS™ Jitter Attenuation ADC16 Instruction Manual Page 22... -
Page 23: Balanced Aes/Ebu Digital Outputs
Output Word Length 24-bits Connectors Eight Toslink Optical Transmitters DAW Card Slot Audio Channels 16 In and 16 Out Sample Rates Up to 200 kHz (Card Dependent) Output Word Length 24-bits External Interfaces Card Dependent ADC16 Instruction Manual Page 23... -
Page 24: Controls
47 - 440 Hz, or DC Inrush Current < 60 A Peak @ 230 VAC Power 45 W Maximum, 40 W Typical Power Factor Fuses ® Type 5 x 20 mm 0.5 A 250 V Slo-Blo Quantity 2 Required ADC16 Instruction Manual Page 24... -
Page 25: Dimensions
1 Rack Wide, 1 RU High 12.125" Depth Behind Front Panel 16" Recommended Minimum Rack Depth to Clear Cables 12.5" Depth 19" Width 1.725" Height Weight ADC16 only 7.0 lbs. Shipping Weight 10 to 12 lbs. ADC16 Instruction Manual Page 25... -
Page 26: Adat S/Mux Tutorial
Interface carries 4 'user bits' per frame, and user bit U2 is now designated as an S/MUX flag. U2 should be set high when the interface is carrying S/MUX . The ADC16 follows this standard. Unfortunately, many devices ignore the user bits, and therefore, these devices will not respond to the S/MUX flag. -
Page 27: S/Mux Sample Rates Must Match
S/MUX Sample Rates Must Match Most devices (including the ADC16) automatically enable and disable S/MUX in response to changes in sample rate. Therefore it is essential that all S/MUX equipped A/D converters, D/A converters, digital consoles, digital audio workstations, and digital processing devices be set to identical sample rates. - Page 28 ADAT Channel 5 = Audio Channel 2.a ADAT Channel 6 = Audio Channel 2.b ADAT Channel 7 = Audio Channel 2.c ADAT Channel 8 = Audio Channel 2.d ** 'X.a', 'X.b' 'X.c' and 'X.d' are successive samples of audio channel X ADC16 Instruction Manual Page 28...
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Page 29: Ultralockdds
Accurate audio conversion requires a very low-jitter conversion clock. Jitter can easily cause severe inaccuracies if not adequately addressed, even when the device employs high-performance converter chips. UltraLockDDS™ is Benchmark's latest jitter-immune clock technology. The ADC16 is the first device to employ Benchmark's new UltraLockDDS™ technology to eliminate all jitter-induced performance problems. - Page 30 The obvious function of a digital anti-alias filter is the removal of audio tones that are too high in frequency to be represented at the selected sample rate. The not-so-obvious function is the removal of high-frequency signals that originate inside the converter box, or even originate inside ADC16 Instruction Manual Page 30...
- Page 31 Jitter-induced sidebands are extremely complex and cannot be removed with any existing audio device. It is therefore important to attack jitter at both ends of the audio chain. The ADC16 is a great start. ADC16 Instruction Manual...
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Page 32: Regulatory Compliance
Regulatory Compliance CE Certificate of Conformity ADC16 Instruction Manual Page 32... -
Page 33: Rohs Compliance
In the event of failure of a product under this warranty, Benchmark Media Systems, Inc. will repair, at no charge, the product returned to its factory. Benchmark Media Systems, Inc. may, at its option, replace the product in lieu of repair. -
Page 34: Extended 2 Year International Warranty
Attempts to deliberately deface, mutilate, or remove the product's label will render this warranty void. Benchmark will not honor warranties for any products disingenuously purchased on the US or Canadian markets for export. The terms of the extended warranty are subject to change without notice. -
Page 35: Contact Information
Contact Information Benchmark Media Systems, Inc. 203 East Hampton Pl, Suite 2 Syracuse, NY 13206 +1-315 437-6300, FAX +1-315-437-8119 http://www.benchmarkmedia.com Copyright © 2011 Benchmark Media Systems, Inc. All rights reserved. ADC16 Instruction Manual Page 35...
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