RDL HRDDA4 Data Sheet

HALF-RACK SERIES

Model HR-DDA4
Digital Audio Distributor

• 1 x 4 Digital Audio Distribution for All Formats

• Input: AES/EBU, Coaxial or Optical S/PDIF

• Each Output: AES/EBU, S/PDIF or AES-3ID

• Format Conversion for Selected Output Format

• Operation Up to 24 bits, 192 kHz

The HR-DDA4 is an RDL HALF-RACK product, featuring an all metal chassis and the advanced circuitry for which RDL products are known. HALF-RACKs may be
operated free-standing using the included feet or may be conveniently rack mounted using available rack-mount adapters.

APPLICATION: The HR-DDA4 is the ideal choice in installations requiring high quality distribution of a digital audio signal. The
input and each of the four outputs support AES/EBU, S/PDIF or AES-3ID formats. The HR-DDA4 automatically detects a valid
input on any of the four input jacks: S/PDIF optical, S/PDIF coaxial, AES-3ID or AES/EBU. The input is decoded, reclocked and
transmitted to four individually buffered outputs. Front-panel LEDs display the digital audio format and sample rate of a valid
source received without any phase-lock or bit errors.

Each output is switch-selectable to provide an AES/EBU, S/PDIF coaxial or AES-3ID output. The switch enables the appropriate
output jack and any required electrical and data format conversion. The AES/EBU input and outputs are 110 Ω terminated; the
S/PDIF coaxial and AES-3ID jacks are 75 Ω terminated.

The HR-DDA4 is powered from 24 Vdc, which may be connected through the detachable terminal block or through the dc power
jack. A front-panel power switch is provided.

RDL’s proprietary
bringing a high level of stability to digital audio signal distribution under the variety of conditions encountered in professional
environments.

Use the HR-DDA4 individually, or combine it with other RDL products as part of a complete audio/video system.

Sure-Lok

™ auto-recovery supervision monitors possible causes of latch-up and reinitiates digital signal lock,

, AES-3ID

• Exclusive

• Transformer Isolated AES/EBU Input and Outputs

• Digital Signal Reclocking

• Sample Rate Indicators

• Digital Signal Lock Indicator for Each Input Format

Sure-Lok

™

Auto-Recovery Sentinel

RDL • 659 N. 6th St. • Prescott, AZ., USA 86301 • [phone] • FAX [phone] • www.rdlnet.com

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HALF-RACK SERIES

Model HR-DDA4
Digital Audio Distributor

Installation/Operation

EN55103-1 E1-E5; EN55103-2 E1-E4

Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.

Connect 24 Vdc to either of the power inputs: DC Jack or Detachable terminal block

Connect one digital audio
source to the appropriate
input jack:

S/PDIF OPTICAL,
S/PDIF COAXIAL,
AES-3ID or
AES/EBU

MOUNTING LABELING

Each of the four output sections will drive one S/PDIF, AES3-ID or AES/EBU output.

For each output section,
connect one digital audio cable
to the appropriate output jack:

S/PDIF COAXIAL,
AES-3ID or
AES/EBU

3. Place Adhesive Label over
Laminate in Track

For each output section, set the
output format switch to the
desired format:

S/PDIF COAXIAL,
AES-3ID or

ES/EBU

For free-standing operation, use the four provided machine
screws to mount the feet to the bottom of the module as shown.

Use the four provided machine screws to secure the module to an
optional RDL mount, such as an HR-RA2 Rack Adapter.

TYPICAL PERFORMANCE

Inputs (4): 110 Ω AES/EBU XLR, transformer isolated; S/PDIF optical; 75 Ω S/PDIF coaxial phono jack; 75 Ω AES-3ID BNC
Outputs (12): 110 Ω AES/EBU XLR, balanced transformer isolated (4); 75 Ω S/PDIF coaxial phono jack (4); 75 Ω AES-3ID BNC (4)
Selectors (4): Rear-panel output format selector (1 for each output)
Sample Rate: 32 kHz to 192 kHz
Resolution: 16 to 24 bits
Indicators (12): POWER LED; INPUT FORMAT LEDs (2); Sample Rate LEDs (9)
Standards: AES3-2003, IEC60958
Power Requirement: 24 to 33 Vdc @ 50 mA, Ground-referenced

Mounting: Rack-mount using optional rack adapters such as HR-RA2; or operate free-standing (feet included)

Dimensions: Height: 1.7 in 4.3 cm
Length: 8.6 in 20.6 cm
Depth: 4.59 in 11.66 cm

OR

The function of this product can be
conveniently and professionally labeled
with a hand-held label printer equipped
with ¼” wide clear label tape.

4. Slide Lens back in position,
covering the clear adhesive
labels. Replace the End Cap.

1. Remove End Ca

2. Slide Lens Out of Track

Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]

891-3255

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287