RDL STICK-ON ST-DA3 User manual

STICK-ON®SERIES
Model ST-DA3
Distribution Amplifier
ANYWHERE YOU NEED...
•Audio Distribution with Up To 3 Outputs
•Balanced or Unbalanced Input and Outputs
•To Bridge a Line for Local Distribution
•Distribution with Impedance Conversion
•Distribution with Gain or Loss
•Ground-referenced or Floating Power
You Need The ST-DA3!
The ST-DA3 is part of the group of versatile STICK-ON products from Radio Design Labs, featuring the
advanced circuitry for which RDL products are known. The durable adhesives provided with the ST-DA3
permit permanent or detachable mounting. Numerous mounting accessories, brackets and rack-mount
chassis are optionally available to facilitate any system design.
APPLICATION: The ST-DA3 allows the bridging of any audio line, adjustment of the gain, and driving up
to three outputs. Each output is driven by a separate amplifier, and is isolated from both the input and
from the other outputs. The circuit design allows the input to accept either balanced or unbalanced
signals, of either high or low impedance; and each output may be connected either balanced or
unbalanced. The ST-DA3 features wideband circuitry that produces the unsurpassed pure clarity for
which RDL products are known. Some features are:
•Functions as an electronic transformer
•Provides isolation, gain, and three outputs
•Wideband amplifiers produce impeccable audio
•Operates from ground-referenced, floating or bipolar power supply
•Ultra-low distortion
•Ultra-low noise
•Excellent phase response
•Gain adjustment 17 dB above or below unity
•Ample headroom at operating level
•Recessed multi-turn audio taper gain trimmer for precise control
•Input and outputs are RF protected
•Full operation in either high or low impedance circuits
•Outputs are short circuit protected
•Positive connections via barrier block
Wherever an audio distribution amplifier is needed, the ST-DA3 is the ideal choice. Use the ST-DA3
combined with other RDL RACK-UP®, STICK-ON, TX™, or FLAT-PAK™, RCX™ series products as part
of a complete audio/video system.
RDL •659 N. 6th St. •Prescott, AZ., USA 86301 •[phone] •FAX [phone] •www.rdlnet.com

STICK-ON®SERIES
Model ST-DA3
Distribution Amplifier
TYPICAL PERFORMANCE
Input: 20 kΩbalanced or unbalanced
Input Signal: -15 dBV to +21 dBu (for +4 dBu output)
Maximum Input Level: +24 dBu
Outputs (3): 150 Ωbalanced or 75 Ωunbalanced
Output Signal:
Balanced: +4 dBu nominal
Unbalanced: 6 dB below balanced line-level
Maximum Output Level: +25 dBu
Frequency Response: 10 Hz to 100 kHz (+/- 0.05 dB)
THD+N: < 0.002% (unity gain)
Noise below +4 dBu: < -98 dB (unity gain)
Headroom: > 20 dB (above +4 dBu)
IMD: < 0.003% (unity gain)
Gain: Unity +/- 17 dB (adjustable)
CMRR: > 60 dB (50 Hz to 120 Hz)
Indicator: Red LED power indicator
Power Requirement: 24 to 33 Vdc @ 70 mA,
Ground-referenced or Floating
Dimensions: Width: 3.00 in. 7.62 cm
Depth: 1.55 in. 3.94 cm
Height: 0.65 in. 1.65 cm
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.
R
PWR O
E
W
P
U
LINE LEVEL BALANCED OR UNBALANCED
AUDIO DISTRIBUTION AMPLIFIER
N
A
G
I
INPUT OUTPUTS
123
R
PWR O
E
W
P
LINE LEVEL BALANCED OR UNBALANCED
AUDIO DISTRIBUTION AMPLIFIER
N
A
G
I
INPUT OUTPUTS
123
U
LINE LEVEL BALANCED OR UNBALANCED
AUDIO DISTRIBUTION AMPLIFIER
N
A
G
I
INPUT OUTPUTS
123
R
PWR O
E
W
P
U
LINE LEVEL BALANCED OR UNBALANCED
AUDIO DISTRIBUTION AMPLIFIER
N
A
G
I
INPUT OUTPUTS
123
R
PWR O
E
W
P
U
AUDIO
WIRING
ADJUSTMENT
25 TURN
GAIN SET
SUPPLY
WIRING
AUXILIARY
BIPOLAR
SUPPLY
RDL PS-24
TYPE BIPOLAR SUPPLY
Vdc
15
12
OR
D
N
G
Vdc
15
OR
12
SUPPLY
EQUIPMENT
LINE-LEVEL
UNBALANCED
FEEDING
SIGNAL
EQUIPMENT
LINE-LEVEL
BALANCED
FEEDING
SIGNAL
SOURCE
LINE-LEVEL
BALANCED
FROM
SIGNAL OTHER
BALANCED
OR UNBAL
OUTPUTS SOURCE
LINE-LEVEL
UNBALANCED
FROM
SIGNAL
OUTPUTS
OR UNBAL
BALANCED
OTHER
24 Vdc
POWER
SOURCE
NEGATIVE
GROUND
DO NOT
OPTIONAL
JUMPER
FOR FLOATING
OR BIPOLAR
POWER
NEGATIVE
REFERENCED
FOR GROUND-
POWER
GROUND
INSTALLATION
INSTALLATION
OR
(WHEN USING GROUND-REFERENCED POWER SUPPLY)
Radio Design Labs Technical Support Centers
U.S.A. [phone], [phone]; Fax: [phone]
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
891-0012O