Sigma UDA-2102 Instruction Manual

UDA-2102

AES/EBU DIGITAL AUDIO

DISTRIBUTION AMPLIFIER

INSTRUCTION MANUAL

SIGMA ELECTRONICS, INC.

P.O. BOX 448

1027 COMMERCIAL AVE.

EAST PETERSBURG, PA 17520-0448

[phone]

UDA-2102 AES/EBU DIGITAL AUDIO DISTRIBUTION AMPLIFIER

GENERAL:

The UDA-2102 is a 1 input x 6 output AES/EBU Digital Audio Distribution Amplifier. The distr ibution amplifier input

is a transformer coupled three pin sc rew terminal. Electrical specific ations conform to audio industry standard AES3-

1992. The input signal range is 2 to 7 Vp-p at 110Ω im pedance. The m odule is designed for applic ations where cable
lengths are 500 feet (153 meter s) or less of Belden 1800A or equivalent AES/EBU Digital Audio cable. Signal source
quality will effect this typical distance. The module has a j umper to select either AC or DC coupling for the s hield to
digital ground. AC coupling the shield may reduce high frequency emissions.

The UDA-2102 has six balanced trans former coupled digital audio outputs. Each output on a detachable three pin
screw terminal. The outputs are 4Vp- p AES3-1992 s tandar d s ignals at 110Ω im pedanc e. Sam pling fr equency rates are
provided in the specifications section of the manual.

POWER:

The UDA-2102 operates from bus voltage of unregulated +20 VDC. This voltage is supplied by the Sigma fram e.
The module regulates the bus voltage to +5 VDC via regulator U3. Circuit protection is provided by RT1. T his PTC
Thermistor ( Positive T em perature Coef fic ient Thermal Resistors) ser ves as a per m anent, self resetting, f use device. In
the event of excessive current dr aw the PTC on the line will open. Upon corr ection of the f ault, the PTC T herm istor will
cool to an operational temperature and reset.

FRAMES:

The UDA-2102 module can res ide in any of four (4) differ ent frames provided by Sigma Electr onics, Inc. If this
module is purchased as a component of a system, please refer to the SERIES 2100 FRAMES Instruction Manual. If the
module was purchased separately, a preexisting frame must be present for proper operation. Sigma would like to
emphasize the fact that any of the Series 2100 modules can be installed with any other Series 2100 m odule within the
Series 2100 frames.

The SS-2100-2 frame is also designed for desk-top applications. This frame provides two (2) positions for two
single slot modules or a single two slot module. An optional tray (RMT-2100-2A) is available for rack installations.

The SS-2100-6 frame is designed for 19 inch EIA rack installations. It provides six (6) slots for modules in 1 RU.

The SS-2100-12 fram e provides a redundant power s upply in a 3 RU frame for 19 inch EIA rac k installations. T his
frame has twelve (12) slot positions for modules.

The SS-2100-16 fram e is also available for installations in a 19 inch EIA rack . This frame provides sixteen (16)
slots for module within 3 RU.

Additional information on the various fram es is available. Please refer to the s pecial section on fram es if this was
purchased as a complete s ystem. If this information is not provided with this shipment, contact Sigma Elec tronics for
assistance.

The UDA-2102 can be purchased in a stand-alone unit as UDA-26.

CONNECTIONS:

Wiring to the m odule is perfor med via the connector s located on the rear panel. Detachable 3 pin screw ter minals
are used for the input and six outputs. T his allows each output connec tor to be detached f or wiring without interr uption
to the destination equipment of the other outputs. The unused outputs do not require a load.

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REAR PANEL CONNECTIONS

Figure 1

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UDA-2102 AES/EBU DIGITAL AUDIO DISTRIBUTION AMPLIFIER

CONFIGURATION:

There are no adjustment controls on this module. A single jumper is provided for the coupling method of the Input

Shield.

J4: ..... Shield Coupling Method, AC/DC. Use AC setting to minimize induction of high frequency noise.

SPECIFICATIONS:

INPUT

INPUT: ................................................. 1, AES3-1992 transformer balanced

INPUT IMPEDANCE: ........................... 110Ω

SIGNAL LEVEL: .................................. 2 to 7 Vp-p

COMMON MODE REJECTION: .......... 7 Volt peak, DC to 6 MHz

AUDIO SAMPLE RATES: .................... AES/EBU encoded data, 28 kHz to 54 kHz, Auto -detect.

INPUT CABLE LENGTH: ..................... 500 feet (152M) maximum

(BELDEN 1800A AES/EBU Digital Audio Cable or equivalent)

OUTPUT

OUTPUTS: .......................................... 6, AES3-1992 transformer balanced

OUTPUT IMPEDANCE: ....................... 110Ω

SIGNAL LEVEL: .................................. 2 to 5 Vp-p

DATA JITTER: ..................................... < ± 3 nsec typical at 300 feet (92 m) input cable length

PROPAGATION DELAY: ..................... 50 nsec nominal

POWER

POWER: .............................................. Supplied by Sigma Electronics 2100 Series modular frame.

POWER CONSUMPTION: ................... 4 watts

ENVIRONMENTAL

OPERATIONAL TEMPERATURE: ....... 0° to +50° C (+32° to +122° F)

MECHANICAL:

CONNECTORS: ................................... 3 Pin, detachable screw terminal

MODULE SIZE: .................................... 2 card slots, requires 2 adjacent positions in a Sigma frame

MODULE WEIGHT: ............................. 1 lb. (net)

TECHNICAL MANUAL:

A manual including schematics and service information is available upon request. This information is intended for
the service of the module and is not required for the operation of the module. Modules should be serviced by qualified
personnel only. Sigma Electronics, Inc. recommends service to be performed at the factory Service Center.

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All specifications, drawings, dimensions, weights and other details are subject to change without notification.

Information is intended to give a general performance and operation guideline of the product.
Sigma Electronics, Inc.; P.O.Box 448; 1027 Commercial Ave.; East Petersburg, PA 17520-0448

Main Office: Tel: [phone] Fax: [phone]
MAR98 UDA-2102