RDL RU-AFC2 Datasheet

RACK-UP® SERIES

Model RU-AFC2

Stereo Audio Format Converter

 Unparalleled Audio Performance
 Unbalanced to Balanced Audio Conversion
 Additional Summed MONO Out
 Switch-Selectable Ground Lift for XLR Output Jacks
 Balanced to Unbalanced Audio Conversion
 Unbalanced RCA Connections on Front Panel
 Balanced XLR Connections on Front Panel
 Balanced Connections on Rear Panel Detachable

Terminal Blocks

 Front-Panel Multi-Turn LEVEL Trimmers
 Dual-LED VU Meter for Each Channel
 Gold-Plated Connectors
 Exceptional Headroom and Frequency Response
 1/3 Rack, High Density Rack Mounting

The RU-AFC2 is part of the group of RACK-UP products from Radio Design Labs. RACK-UPs feature the advanced circuitry for which RDL products
are known, combined with accessible user-friendly controls and displays. The ultra compact design permits high-density installations, with three
products mounted in a single rack unit. Optional brackets permit mounting a RACK-UP module above, below, or in front of any flat surface.

APPLICATION:

RU-AFC2 to fully convert the stereo input and stereo output of a consumer audio product to professional balanced
standards. It can equally convert the stereo input and stereo output of a professional audio product to consumer
unbalanced standards. The audio fidelity, low noise, low distortion and excellent crosstalk performance of the
RU-AFC2 are ideally suited to the most critical applications. The RU-AFC2 has been carefully engineered in
meticulous detail to provide the ultimate audio interface package available.

Unbalanced audio connections are available on front-panel RCA jacks. Balanced audio connections are available on
front-panel XLR jacks and on rear-panel detachable terminal blocks. The shield connections of the XLR output jacks
are connected to the case through a rear-panel ground-lift switch. The unbalanced to balanced section includes an
additional MONO summed output on a rear-panel detachable terminal block which may be wired balanced or
unbalanced. The mono output may be used to drive patch-bay jacks, powered monitors or subwoofer amplifiers.

Each of the left and right outputs is equipped with a dual-LED VU-meter. The intensity of the green LED is
proportional to the audio level. The red LED flashes at the calibrated output level, -10 dBV unbalanced or +4 dBu
balanced. An individual multi-turn level trimmer is provided on the front panel for each output channel.

The RU-AFC2 operates from ground-referenced 24 Vdc. Use the RU-AFC2 individually, or combine it with other
RDL products as part of a complete audio/video system.

The RU-AFC2 is a stereo bi-directional audio format converter. The bi-directional format allows the

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

RACK-UP® SERIES

Model RU-AFC2

Stereo Audio Format Converter

Installation/Operation

Declaration of Conformity available from rdlnet.com.

Sole EMC specifications provided on product package.

Specifications are subject to change without notice.

TYPICAL PERFORMANCE

Unbal to Bal Section: (Referred to ‑10 dBV input feeding +4 dBu)
Inputs (2): Unbalanced line‑level, +25 dBV max.
Input Connectors (2): RCA Phono jack (left and right)
Outputs (3): +4 dBu balanced (left, right, mono sum), +25 dBu max.
Output Connectors (4): XLR (2) and/or detachable terminal block (left and right);
detachable terminal block (mono sum)
Gain adjustment: -25 dB to +9 dB (rel. +4 dBu)
Frequency Response: 10 Hz to 150 kHz (+/‑ 0.25 dB)
THD+N: < 0.005%
Noise: < ‑90 dB (below +4 dBu)
Crosstalk: < ‑80 dB (20 Hz to 20 kHz)
Headroom: > 20 dB

Power Requirement: GROUND‑REFERENCED, 24 Vdc @ 60 mA (idle), 100 mA (max)
Ambient Operating Environment: 0° C to 55° C

Radio Design Labs Technical Support Centers

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

891-3420B

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

Bal to Unbal Section: (Referred to +4 dBu input feeding ‑10 dBV)
Inputs (2): Balanced line‑level, +25 dBu max.
Input Connectors (3): XLR (2) or detachable terminal block (left and right)
Outputs (2): -10 dBV unbalanced (left and right), +17 dBV max.
Output Connectors (2): RCA Phono jack (left and right)
Level adjustment: ‑28 dB to +5 dB (rel. -10 dBV)
CMRR: > 80 dB (50 to 120 Hz)
Frequency Response: 10 Hz to 150 kHz (+/‑ 0.25 dB)
THD+N: < 0.001%
Noise: < ‑100 dB (below ‑10 dBV)
Crosstalk: < ‑90 dB (10 Hz to 20 kHz)
Headroom: > 20 dB