RDL HRDAC1 Data Sheet

HALF-RACK SERIES

Model HR-DAC1
Digital to Analog Audio Converter

• Broadcast Quality Audio Digital to Analog Conversion

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

, AES-3ID

• Outputs: Balanced and Unbalanced Stereo Audio

• Adjustable Audio Output Gain Trim

• Dual-LED Audio Output Level VU Metering

The HR-DAC1 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-DAC1 is the ideal choice in installations requiring high quality analog audio from an AES/EBU, AES-3ID

or S/PDIF digital audio source. The HR-DAC1 automatically detects a valid input on any of the four input jacks: S/PDIF optical,
S/PDIF coaxial, AES-3ID or AES/EBU. The AES/EBU input is 110 Ω terminated; the S/PDIF coaxial and AES-3ID jacks are 75 Ω
terminated. A front-panel LOCK LED indicates the presence of a valid digital audio source without any phase-lock or bit errors.
Sample rates from 32 kHz to 192 kHz are supported with front-panel LEDs to indicate standard digital audio rates of 44.1 kHz,
48 kHz, 96 kHz and 192 kHz.

The digital input is converted to stereo audio using high speed delta-sigma conversion, digital filtering and filtered wideband analog
drivers. The high performance, low-noise converters are supplemented with digitally controlled analog gating to produce
unparalleled performance. The LEFT and RIGHT output levels are individually adjustable using front-panel knobs. A dual-LED VU
meter displays the output level of each channel to facilitate level adjustments. Balanced +4 dBu audio outputs are provided on a
rear-panel detachable terminal block and on XLR jacks. Unbalanced -10 dBV outputs are provided on phono jacks. For
installations requiring fixed, calibrated output levels, the HR-DAC1 front-panel knobs may be removed and replaced with security
covers, available separately (RDL SC-2 Kit of two security caps with tightening tool).

The HR-DAC1 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 to analog audio signal conversion under the variety of conditions encountered in
professional environments.

Use the HR-DAC1 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,

• Operation Up to 24 bits, 192 kHz

• Exclusive

Sure-Lok

™

Auto-Recovery Sentinel

• Transformer Isolated AES/EBU Input

• Automatic Sample Rate Detection with Indicators

• Digital Signal Lock Indicator for Valid Inputs

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

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Out o

HALF-RACK SERIES

Model HR-DAC1
Digital to Analog Audio Converter

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

TERMINAL BLOCK WIRING

BALANCED

Output connections:

Connect balanced +4 dBu line-level output cables, left and
right, to the XLR jacks.

Connect unbalanced -10 dBV line-level output cables, left and
right, to the phono jacks.

For hard-wired installations, connect ba lanced (or unbalanced)
audio cables to the detachable terminal block.

(Note: Unbalanced outputs connected to the terminal block will be fed at a

-2 dBu level for a front-panel dual-LED VU meter reading of +4 dBu. Use the phono
jacks for standard -10 dBV output level.)

MOUNTING

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 (6): Left and Right: 150 Ω balanced XLR, +4 dBu; 150 Ω balanced terminal block, +4 dBu; -10 dBV unbalanced phono jack
Sample Rate: 32 kHz to 192 kHz
Resolution: 16 to 24 bits
Frequency Response: 5 Hz to 24 kHz (+/- 0.2 dB into high impedance load)
THD+N: < 0.002% (20 Hz to 20 KHz, below +22 dBu)
Harmonic attenuation (typ.): 2
Crosstalk: < -100 dB (5 Hz to 3 kHz); < -90 dB (3 kHz to 20 kHz)
Output Level: Adjustable from OFF to +24 dBu (input = 0 dBFS); Left and Right front-panel user controls
Phase L↔R: ±0.15° (5 Hz to 20 kHz)
Residual Noise: < -100 dB (10 to 20 kHz, -120 dBFS input, reference +22 dBu @ 0 dBFS)
< -110 dB (locked to digital input, digital audio signals off, reference +22 dBu @ 0 dBFS)
Dynamic Range: > 110 dB (resolution 24-bit unweighted)
Indicators (10): POWER LED, blue; LOCK LED, green (locked to valid input signal); RATE: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz;
dual-LED VU meter, LEFT and RIGHT
Standards: AES3-2003, IEC60958

Power Requirement: 24 to 33 Vdc @ 175 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

nd

: -105 dB; 3rd: -108 dB; 4th, 6th: -115 dB; 5th, 7th: -110 dB; above 7th: <-115 dB

OR

Radio Design Labs Technical Support Centers

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

891-3275

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

LABELING

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

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

3. Place Adhesive Label over
Laminate in Track

e.

1. Remove End Cap

2. Slide Lens

f Track