Digital Audio Coax Baluns Series
BNC
75
to 110
Transformer
Twisted
Pair
(Balanced)
Connector
XLR
E3
QCP
Attenuation
Pad
BNC
75
to 110
Transformer
Twisted
Pair
(Balanced)
Connector
XLR
E3
QCP
(Front View)
Spec Sheet
Multi-Circuit
Digital Audio AES Balun
(Back View)
BNC to XLR
Inline Baluns
UniPatch System fully loaded with 16 AES
Baluns for 64 110-75 Ohm circuits
(allows modules to be mounted either way)
ADC proudly offers a full series of precision Balun products: three XLR to BNC Inline Baluns;
plus numerous Multi-Circuit Baluns that can be used in our UniPatch® system or in
throwdown applications.
For over 50 years ADC has been the leader in audio and video patching products with unsurpassed
quality, reliability and innovation. To complement its full line of connectors, ADC has introduced
a series of 110 Ω to 75 Ω AES impedance matching Baluns. By converting balanced signal over
twisted pair cable to unbalanced signal over coax, the Audio Coax Balun permits the extension
of digital audio signal transmission distances.
Application
Connects, extends and lengthens digital audio
cable runs by converting twisted pair to coax.
Series Features
• Signal distribution to use with video patch
panels, routers and VDAs
• Permits longer cable runs over coax
• SMPTE 276M & AES3 Transmission Standards
• Capable of carrying 2 channels AES/EBU
digital audio over coax
Balun Circuitry with Attenuation Pad
Balun Circuitry
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Digital Audio Coax Baluns Series
(3.37”)
85.5 mm
(0.75”)
18.9 mm
(3.37”)
85.5 mm
18.9 mm
(0.75”)
(3.09”)
78.4 mm
(0.75”)
18.9 mm
Inline XLR to BNC Baluns
Features
•
Digital Audio Impedance Matching
• Precision machined robust body and connectors
BNC to XLR
Inline Baluns
Specifications
ELECTRICAL
Operating Range: .1-6 MHz
Maximum Voltage: 5 Vpp
Return Loss: Better than 23 dB
Insertion Loss: Better than .26 dB
MATERIAL
Precision machined brass bodies
ENVIRONMENTAL
Tested to IEC68, MIL-STD-202
Digital Audio Coax
1 0 / 0 6 • 1 0 3 4 1 3 A E
O r d e r i n g I n f o r m a t i o n
Description Catalog Number
Inline Baluns, Twisted Pair-Coax, 110
Inline Male XLR to BNC Balun BAL-XLR-BNC-M
Inline Female XLR to BNC Balun BAL-XLR-BNC-F
Inline Female XLR to BNC Balun with 10 dB Attenuation BAL-XLR-1VBNC-F
Ω – 75 Ω
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2
Digital Audio Coax Baluns Series
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6 7
18
19
20
Attenuation Pad Value (dB)
17
16
15
14
13
12
11
10
9
8
2 volts
3 volts
4 volts
5 volts
6 volts
7 volts
8 volts
9 volts
10 volts
Input
Voltage
Output Voltage (p-p)
UniPatch® Multi-Circuit Baluns
Digital Audio Coax
AES 110 Ohm to
75 Ohm Balun
(E3)
Precision transformers,
glass epoxy circuit board,
True 75 Ohm BNC connectors
Features
• Digital Audio Impedance Matching
• Can be mounted in the standard UniPatch
frame or used in a throwdown application
• Uses precision BNC connectors
Specifications
ELECTRICAL
Operating Range: .1-6 MHz
Maximum Voltage: Variable
Return Loss: Better than 28.5 dB
Insertion Loss: Better than .14 dB
ENVIRONMENTAL
Tested to IEC68, MIL-STD-202
AES 110 Ohm to
75 Ohm Balun
(QCP)
• Uses E3 or QCP punchdown connectors
• Unique removable attenuation pad capability
allows users to control individual circuit’s
voltage outputs
1 0 / 0 6 • 1 0 3 4 1 3 A E
Pad any of 4 circuits from 0-20 dB with
removable attenuation pad values
O r d e r i n g I n f o r m a t i o n
Description Catalog Number
UniPatch Multi-Circuit Balun, AES Audio to Coax , 110 Ω – 75 Ω
UniPatch E3 to BNC 4-Circuit Balun AM-411075-E3
UniPatch QCP MKII to BNC 4-Circuit Balun AM-411075-MKII
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3
Digital Audio Coax Baluns Series
UniPatch® Multi-Circuit Balun/Audio Splitter
Features
• Digital Audio Impedance Matching
• Can be mounted in the standard UniPatch
frame or used in a throwdown application
• Unique removable attenuation pad capability
allows users to control individual circuit’s
voltage outputs
• Cost efficient splitting done passively without
need for active equipment
• Uses E3 or QCP punchdown connectors
• Uses precision BNC connectors
Specifications
ELECTRICAL
Operating Range: .1-6 MHz
Maximum Voltage: Variable
Return Loss: Better than 25 dB
Insertion Loss: Better than .2 dB
AES 2:4 Splitter Balun
ENVIRONMENTAL
Tested to IEC68, MIL-STD-202
Digital Audio Coax
O r d e r i n g I n f o r m a t i o n
Description Catalog Number
UniPatch Multi-Circuit Balun/Audio Splitter, 110 Ω - 75 Ω
Split 2-Circuit Input Audio (QCP) into 4-Circuit Output Coax (BNC) AM-2110-475-MKII
Split 2-Circuit Input Audio (3-Pin) into 4-Circuit Output Coax (BNC) AM-2110-475-E3
1 0 / 0 6 • 1 0 3 4 1 3 A E
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4
-50
-45
-40
-35
-30
-25
-20
0 1 2 3 4 5 6 7 8 9 10
Frequency (MHz)
Loss (dB)
Return Loss
Digital Audio Coax Baluns Series
UniPatch® Multi-Circuit Front Facing Balun
Features
• Digital Audio Impedance Matching
• Can be mounted in the standard UniPatch frame or
used in a throwdown application
• Uses E3 connectors
• Uses precision BNC connectors
• Full front access
Specifications
Spec Sheet
ELECTRICAL
Operating Range: .1-6 MHz
Multi-Circuit
Front Facing Balun
Return Loss: Better than 28.5 dB
Insertion Loss: Better than .14 dB
ENVIRONMENTAL
Tested to IEC68, MIL-STD-202
O r d e r i n g I n f o r m a t i o n
Description Catalog Number
UniPatch Multi-Circuit Front Facing Balun, AES Audio to Coax , 110 Ω – 75 Ω
UniPatch E3 to BNC Front Facing Balun AM-411075-E3-FF
Web Site: www.adc.com
From North America, Call Toll Free: 1-800-366-3891 • Outside of North America: +1-952-938-8080
Fax: +1-952-917-3237 • For a listing of ADC’s global sales office locations, please refer to our Web site.
ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, Minnesota USA 55440-1101
Specifications published here are current as of the date of publication of this document. Because we are continuously
improving our products, ADC reserves the right to change specifications without prior notice. At any time, you may
verify product specifications by contacting our headquarters office in Minneapolis. ADC Telecommunications, Inc.
views its patent portfolio as an important corporate asset and vigorously enforces its patents. Products or features
contained herein may be covered by one or more U.S. or foreign patents. An Equal Opportunity Employer
103413AE 10/06 Original © 2006 ADC Telecommunications, Inc. All Rights Reserved
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