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

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