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TX
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Model TX-AT1S
™
SERIES
Audio Isolation Transformer
ANYWHERE YOU NEED...
• Studio Quality Audio Transformer
• Bifilar Winding, Nickel Alloy Core
• Protection for Inputs and Outputs
• Transient and RF Suppression
• Barrier Block Transformer Connections
• Galvanic Isolation
• 1:1 Transformer Coupling
• Transformer to Drive 600 Ohm Line
• Convenience of RDL TXs
You Need The TX-AT1S!
The TX-AT1S is part of the group of versatile Max-TX series products from Radio Design Labs. Max-TX
modules are the large format members of the RDL TX family, featuring the superior engineering and
components common to RDL products. The durable adhesives provided with the TX-AT1S permit
permanent or removable mounting. The TX-AT1S may be rack or surface mounted with optional TX
series accessories.
APPLICATION: The TX-AT1S is the ideal choice in many applications requiring studio quality transformer
coupling between balanced audio equipment and a balanced line in environments where harmful impulses
and unwanted rf pickup are likely.
The TX-AT1S is a single-channel (mono) module featuring barrier block connections for the input and
output. A studio-quality audio transformer couples the audio input to the audio output. A common ground
terminal is connected to the TX-AT1S metal support structure. The TX-AT1S incorporates the latest in
surface mount, all solid-state (no gas tube), transient suppression technology coupled with ferrite high
frequency suppression.
A 1:1 audio transformer provides galvanic isolation. The audio transformer has 600 Ohm primary and
secondary bifilar windings, though is optimized to be driven from a low-impedance source into a bridging
load. The primary and/or secondary may be wired unbalanced, providing conversion between balanced
and unbalanced audio lines. The TX-AT1S delivers the wideband audio, ultra-low distortion, audio clarity
and headroom common to studio equipment in a module suited to both studio and general-purpose audio
installations.
The TX-AT1S’s compact size permits mounting in a variety of spaces and in various locations in
equipment racks. The TX-AT1S may be mounted where needed, to rack sides or in an equipment rack
(either the front or rear rack rails) using a variety of available RDL mounting options. Use the TX-AT1S
individually, or combine it with other RDL products as part of a complete audio/video system.
RDL • 659 N. 6th St. • Prescott, AZ., USA 86301 • (928) 443-9391 • FAX (928) 443-9392 • www.rdlnet.com
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SERIES
Model TX-AT1S
Audio Isolation Transformer
TRANSFORMER ISOLATION
UNBALANCED SOURCE
BALANCED SOURCE AND LOAD
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.
UNBALANCED LOAD
AUDIO ISOLATION / TRANSIEN
+
-
INPUT
INPUT FROM
AUDIO ISOLATION / TRANSIENT SUPPRESSION 1 1
+
-
INPUT
INPUT FROM
BALANCED EQUIPMENT
BALANCED EQUIPMENTUNBALANCED EQUIPMENT
OUTPUT
OUTPUT TO
SIENT SUPPRESSION 1 1
OUTPUT
OUTPUT TO
UNBALANCED EQUIPMENT
TYPICAL PERFORMANCE
Input Connector: Barrier block
Input Level: +4 dBu; +22 dBu maximum
Output Connector: Barrier block
Output Level: +4 dBu (less insertion loss)
Impedance Ratio: 600: 600
Turns Ratio: 1: 1
Core: Nickel alloy
Frequency Response: 20 Hz to 20 kHz (+/- 0.1 dB)
THD: <0.035% (50 Hz to 20 kHz, +4 dBu input)
0.001% (Typ. 1 kHz, +4 dBu input)
0.09% (Typ. 20Hz, +4 dBu input)
Insertion Loss: 0.25 dB (20 Ω source; 10 kΩ load)
2 dB (20 Ω source; 600 Ω load)
CMRR: >85 dB (balanced input, 50 to 60 Hz)
Maximum interference signal: 30 Vp, 60 Vp-p
HV switch clamp: 24 V actuation; 48 V maximum clamp
Transient energy: 0.1 joule
Power Requirement: Passive
Overall Dimensions:
Height: 1.90 in. 4.83 cm
Width: 1.63 in. 4.14 cm
Length: 3.00 in. 7.62 cm
EMC:
Radio Design Labs Technical Support Centers
U.S.A. (800) 933-1780, (928) 778-3554; Fax: (928) 778-3506
891-7035A
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
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