Universal Audio 2192 Manuale utente
Model 2192
Master Digital Audio Interface
Manual Part Number: 65-0701
Revision 1.00
Universal Audio, Inc.
330 Encinal Street
Santa Cruz, CA 95060-2101
(831) 466-3737 voice
(831) 466-3775 fax
www.uaudio.com
2
Notice
Important Safety Instructions
Before using this unit, be sure to carefully read the applicable items of these operating
instructions and the safety suggestions. Afterwards keep them handy for future reference. Take
special care to follow the warnings indicated on the unit, as well as in the operating instructions.
Water and Moisture – Do not use the
unit near any source of water or in
excessively moist environments.
Object and Liquid Entry – Care should
be taken so that objects do not fall, and
liquids are not spilled, into the enclosure
through openings.
Ventilation – When installing the unit in a
rack or any other location, be sure there is
adequate ventilation. Improper ventilation
will cause overheating, and can damage
the unit.
Heat – The unit should be situated away
from heat sources, or other equipment that
produces heat.
Power Sources – The unit should be
connected to a power supply only of the
type described in the operating instructions,
or as marked on the unit.
Power Cord Protection – AC power
supply cords should be routed so that they
are not likely to be walked on or pinched
by items placed upon or against them. Pay
particular attention to cords at plugs,
convenience receptacles, and the point
where they exit from the unit. Never take
hold of the plug or cord if your hand is wet.
Always grasp the plug body when
connecting or disconnecting AC.
Grounding of the Plug – This unit is
equipped with a 3-wire grounding type
plug, a plug having a third (grounding) pin.
This plug will only fit into a grounding-type
power outlet. This is a safety feature. If you
are unable to insert the plug into the outlet,
contact your electrician to replace your
obsolete outlet. Do not defeat the purpose
of the grounding-type plug.
Carts and Stands – The unit should be
used only with a cart or stand that is
recommended by the manufacturer. The unit
and cart combination should be moved with
care. Quick stops, excessive force and
uneven surfaces may cause the unit and
cart combination to overturn.
Wall Or Ceiling Mount – The unit
should be mounted to a wall or ceiling
using only equipment designed for that
purpose.
Cleaning – The unit should be cleaned
only with a damp cloth and mild soap if
necessary. Chemical cleaners may damage
the silkscreen and/or finish.
Nonuse Periods – The AC power supply
cord of the unit should be unplugged from
the AC outlet when left unused for a long
period of time.
Damage Requiring Service – The unit
should be serviced by qualified service
personnel when:
•The AC power supply cord or the
plug has been damaged;
•Objects have fallen or liquid has
been spilled into the unit;
•The unit has been exposed to rain;
•The unit does not operate normally
or exhibits a marked change in
performance;
•The unit has been dropped, or the
enclosure damaged.
Servicing – The user should not attempt to
service the unit beyond that described in the
operating instructions. All other servicing
should be referred to qualified service
personnel.
3
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modifications not expressly approved by Universal Audio could void the
user's authority to operate the equipment.
Disclaimer
This manual provides general information, preparation for use, installation and operating
instructions for the Universal Audio 2192 Master Digital Audio Interface. The information
contained in this manual is subject to change without notice.
Universal Audio, Inc. makes no warranties of any kind with regard to this manual, or the
product(s) it refers to, including, but not limited to, the implied warranties of merchantability and
fitness for a particular purpose. Universal Audio, Inc. shall not be liable for errors contained
herein or direct, indirect, special, incidental, or consequential damages in connection with the
furnishing, performance, or use of this material or the product(s).
Copyright
© 2003 Universal Audio, Incorporated. All rights reserved.
This manual and any associated software, artwork, product designs, and design concepts are
subject to copyright protection. No part of this document may be reproduced, in any form,
without prior written permission of Universal Audio, Inc.
Trademarks
LA-2A, 1176, 2-610, M610, 2108, 6176, 2192, UAD-1, and the Universal Audio, Inc. logo
are trademarks of Universal Audio, Inc. ADAT® is a registered trademark of Alesis Corporation.
Other company and product names mentioned herein are trademarks of their respective
companies.
4
Contents
Notice ........................................................................................ 2
Important Safety Instructions ................................................................................2
FCC Compliance ..............................................................................................3
Disclaimer .......................................................................................................3
Copyright........................................................................................................3
Trademarks .....................................................................................................3
Introduction ............................................................................... 7
Analog Ears, Digital Minds .................................................................................7
Features..........................................................................................................9
Specifications.................................................................................................10
Front Panel .............................................................................. 13
Rear Panel.....................................................................................................14
Block Diagram ...............................................................................................15
Connections ............................................................................. 16
AC Power Input ..............................................................................................16
AES/EBU Digital I/O.......................................................................................16
S/PDIF Digital I/O ..........................................................................................17
Word Clock I/O.............................................................................................17
ADAT Optical Digital I/O .................................................................................18
Analog I/O ...................................................................................................18
Analog Line Trims ...........................................................................................19
Line Trim Procedure .........................................................................................19
Ground Isolation Jumpers..................................................................................20
5
Controls ................................................................................... 21
LED Level Meters.............................................................................................21
Clock Source .................................................................................................21
Sample Rate Select..........................................................................................23
Clock Status Lamp...........................................................................................24
Analog Outputs DAC Source Select ....................................................................24
AES/SPDIF Controls ........................................................................................25
Digital Outputs Source Select.............................................................................25
Power Lamp...................................................................................................26
Power Switch .................................................................................................26
Clocking................................................................................... 27
Flexibility ......................................................................................................27
Subclocking/Overclocking................................................................................27
Reclocking.....................................................................................................27
Analog to Digital Conversion................................................... 28
A/D Using Internal Clock..................................................................................28
A/D Using External Clock.................................................................................29
Digital to Analog Conversion................................................... 30
D/A Using Internal Clock..................................................................................30
D/A Using Digital Audio Source Clock ................................................................31
D/A Using External BNC Word Clock.................................................................32
D/A Using ADAT Clock with AES/SPDIF Audio .....................................................33
D/A Using AES/SPDIF Clock with ADAT Audio .....................................................34
Transcoding ............................................................................. 35
Transcoding Using Internal Clock........................................................................35
Transcoding Using Digital Audio Clock................................................................36
Transcoding Using Alternate Clock .....................................................................37
6
Diagrams................................................................................. 38
Frequency Response ........................................................................................38
Dynamic Range: A/D ......................................................................................39
Dynamic Range: D/A ......................................................................................40
Mastering Setup .............................................................................................40
Digital Audio Workstation Setup ........................................................................41
8-Channel Pro Tools Setup ................................................................................42
Index ....................................................................................... 43
List of Figures
Figure 1: Front Panel Elements .....................................................................................13
Figure 2: Rear Panel Elements......................................................................................14
Figure 3: Block Diagram.............................................................................................15
Figure 4: Frequency Response .....................................................................................38
Figure 5: A/D Dynamic Range.....................................................................................39
Figure 6: D/A Dynamic Range.....................................................................................40
Figure 7: Typical Mastering Setup ................................................................................40
Figure 8: Typical DAW Setup ......................................................................................41
Figure 9: Typical Pro Tools HD Setup.............................................................................42
List of Tables
Table 1: Front Panel Index ..........................................................................................13
Table 2: Rear Panel Index...........................................................................................14
Table 3: Internal Ground Isolation Jumpers .....................................................................20
Table 4: Clock Source & Sample Rate Interaction .............................................................22
Table 5: Available Sample Rates ..................................................................................23
Table 6: Sample Rates with External Clocking .................................................................24
7
Introduction
Analog Ears, Digital Minds
Thank you for using the 2192 Master Digital Audio Interface, the first product to combine
Universal Audio’s long history of creating high-quality vintage analog gear with its advanced
digital technology.
Conversion
The soul of the 2192 is the analog circuitry used in the A/D and D/A converters.
The analog signal path uses DC-coupled, fully dual-differential, matched-FET, all discrete Class-A
circuitry, resulting in ultra-low noise, excellent transient response and unmatched sound. No
capacitors or DC servos are used in the signal path since these degrade audio quality and
image stability, and introduce phase distortion.
Our no-compromises design approach and extensive history in analog and digital circuit design
ensure your converted signals are totally accurate and of the highest possible fidelity.
Analog to Digital
Analog signals can be converted to digital at sampling rates of 44.1, 48, 88.2, 96, 176.4, and
192kHz. The digital output signal is always 24-bit format.
During A/D conversion, the digital signal is output to all digital outputs (AES/EBU, S/PDIF, and
ADAT S-MUX) simultaneously. Audio digitized at rates above 96kHz is carried over AES/EBU in
single- or dual-wire mode, and ADAT optical I/O with S-MUX interleaving. The S/PDIF
specification, which includes 192kHz 24-bit audio, is fully implemented.
The 2192 analog outputs can be set to monitor the converted analog inputs. In this scenario the
D/A converters output the signals from the A/D converters, enabling “true confidence” analog
monitoring of the digitized signal.
Digital to Analog
Any of the digital input sources (AES/EBU, S/PDIF, or ADAT S-MUX) can be converted to
analog. The clock source used during the D/A conversion can come from the internal clock, the
digital audio source signal, or from an external clock source that is separate from the digital
audio.
D/A conversion is accomplished at the sample rate of the digital audio source signal, even if the
2192 is synchronized to an external clock source that is running at a multiple or submutiple of
the digital audio sample rate (subclock/overclock).
8
Clocking
The internal digital clock of the 2192 was designed for extreme stability and jitter-free operation.
The internal clock conditioner removes jitter from external sources, so conversion quality is
unaffected by clock source.
Combined with its extensive digital I/O, flexible front-panel routing controls, and phase aligned
clock conditioner, the 2192 provides high-quality master clock source and clock distribution for
your entire studio.
Two separate word clock inputs as well as AES/EBU, S/PDIF, and ADAT S-MUX can be used as
external clock sources in addition to the internal clock. Four word clock outputs are provided so
the 2192 can be used as a master clock source without daisy-chaining or cascading the clock
through external devices, which can degrade the clock signal.
A prominent lamp indicates when the 2192 is successfully synchronized to an external clock
source.
Subclock and Overclock
A/D and D/A conversion is accomplished at any available 2192 sample rate, even if the 2192
is synchronized (slaved) to an external clock source that is running at a multiple or submultiple of
the 2192 sample rate.
Subclocking occurs if the 2192 is synchronized to an external clock that is running at 2x or 4x
the 2192 sample rate. Overclocking occurs if the 2192 is synchronized to an external clock that
is running at 1/2 or 1/4 of the 2192 sample rate.
See the clocking section on page 27 for more details.
Transcoding
The 2192 can transcode (convert) digital audio between AES/EBU, S/PDIF, and ADAT S-MUX in
realtime. For example, you can transfer 192kHz audio from S/PDIF to dual-wire 192kHz
AES/EBU or ADAT S-MUX. Transcoding can be performed using any of the available clock
sources.
9
Features
•Ultra-low noise 44.1kHz – 192kHz A/D and D/A converters
•Low jitter internal clock source provides 44.1, 48, 88.2, 96, 176.4 and 192kHz sampling
rates
•DC-coupled, fully dual-differential, matched-FET, all discrete Class-A, no-compromises analog
signal path
•No capacitors in the signal path to degrade sound quality or introduce phase distortion
•2 channel ADAT S-MUX I/O for 44.1kHz to 48kHz transmission of 44.1kHz to 192kHz
audio
•2 Channel transformer coupled AES/EBU I/O (44.1kHz – 192kHz)
•Support for single and dual wire AES/EBU at 176.4kHz and 192kHz rates
•2 Channel transformer coupled S/PDIF I/O (44.1kHz – 192kHz)
•Realtime transcoding between digital formats
•Independent digital and analog output routing
•4 parallel 75 ohm BNC Word Clock outputs for jitter-free and reflection-free clock distribution
•2 separate 75 ohm BNC Word Clock inputs capable of synchronizing to 1x house clocks
while running at higher 2x and 4x sample rates
•Front panel Sync-Lock indicator
•Sturdy front panel rotary switches provide Clock, Sample Rate, Analog Output and Digital
Output source selection
•Full 24-bit digital signal path throughout
•No digital processing of the audio signal
•Multi-segment LED bargraph metering on all analog inputs and outputs, with timed peak-hold
digital overload (input) and digital peak (output) indicators
•Internal universal auto-sensing, filtered, multi-stage regulated power supply supports 100-
240VAC and 50-60Hz power for trouble-free operation world-wide
•Rugged 1U rack mount steel chassis
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Specifications
Analog
•Inputs:
2x balanced XLR female connectors
DC coupled, dual-differential
Common-mode rejection ratio (CMRR): >90dB
Impedance: ~1.5k ohms
Maximum input level: +31dBu
•Outputs:
2x balanced XLR male connectors
DC coupled, dual-differential
Impedance: ~95ohms
Maximum output level: +23dBu
•Frequency Response (analog input to ADC to DAC to analog output,
referenced to 1kHz, Fs = 192kHz):
+- 0.1dB, 10Hz to 40kHz, -1dB at 74kHz
(See Figure 4: Frequency Response on page 38)
•Analog Level Trim:
oADC input (Lo-Z source):
Max input for 0dBFS: +30dBu
Min input for 0dBFS: +5.5dBu (3dBV)
oDAC output (Hi-Z load):
Max output at 0dBFS: +23dBu
Min output at 0dBFS: +4dBu (+1.8dBV)
oFactory trim:
Headroom: +18dB
Reference level: +4dBu = -18dBFS
Max input/output at 0dBFS: +22dBu
Trim accessed via 15-turn, rear-panel mounted potentiometer
Conversion
•A/D:
oDynamic range (measured using -38dBu = -60dBFS input at 1kHz
(See Figure 5: A/D Dynamic Range on page 39)
118dB (A-weighted), 115dB (unweighted)
oFrequency response (relative to 1kHz):
+- 0.02dB, 10Hz to 20kHz @ Fs = 44.1kHz
+- 0.04dB, 10Hz to 40kHz @ Fs = 96kHz
oPhase response:
<0.1˚, 10Hz to 1kHz
-1.0˚ at 20kHz
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