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BUC 102
Two Channel Audio BUC - Balanced and Unbalanced Converter
feAtures
• Inputs: Captive screw connectors
• Outputs: Captive screw connectors
• Provides signal matching between unbalanced and balanced audio equipment
— The BUC 102 enables correct interfacing of consumer and professional equipment
with proper gain offsets.
• Audio line driver — Active, op amp-based circuitry provides wide frequency
response, low noise, immunity to interference - EMI, and the ability to drive signals over
long cables.
• Allows transmission of balanced audio signals up to 1000' through Extron
STP20 cable
• Gain control for each channel with a wide adjustment range from -80 dB to
+20 dB — Two front panel rotary trim pots provide level adjustment for each input.
• Gain compensation switch for interfacing between professional A/V systems
• Rack-mountable 1U, one-eighth rack width metal enclosure
• External universal power supply included, part # 70-055-01 — Provides worldwide
power compatibility.
descriPtion
The Extron BUC 102 Balanced and Unbalanced Audio Converter provides signal matching
between unbalanced and balanced audio equipment. In addition to serving as an interface
between professional A/V systems and consumer products, the BUC 102 is a high-quality line
driver for sending and receiving audio signals over long distances.
Inputs and outputs for the BUC 102 are on captive screw connectors. User controls include
variable gain adjustments and a gain compensation switch to maintain consistency between
consumer and professional audio levels. Part of the VersaTools
integrator friendly products, the BUC 102 is housed in a 1U, one-eighth rack width
metal enclosure.
sPecificAtions
Audio
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unity (0 dB) when the BUC 102 is set to the default gain adjustment and
the DIP switch is set to match the output wiring.
DIP Switch Setting
Unbalanced
Balanced
Gain adjustment range . . . . . . . . . Mute to +20 dB, when DIP switch is set to match the output wiring
Frequency response . . . . . . . . . . . . 20 Hz to 20 kHz, <±0.15 dB
THD + Noise . . . . . . . . . . . . . . . . . . . . . . 0.05% @ 1 kHz at nominal level
S/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >90 dB, balanced, at maximum output, unweighted
Stereo channel separation . . . . >80 dB @ 1 kHz, >60 dB @ 20 kHz
CMRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >72 dB @ 20 Hz to 20 kHz
model
BUC 102
oPtionAl Accessories
RSU 129
RSF 123
MBU 123
PMK 100
MBB 100
670
line of small, economical,
®
Output Wiring
Unbalanced
Balanced
0 dB
+6 dB
-6 dB
0 dB
Version descriPtion
Balanced-Unbalanced Audio Converter
model descriPtion
1U 9.5" Deep Universal Rack Shelf Kit
1U 3.5" Deep VersaTools
®
VersaTools
Mini Under-Desk Mount Kit
®
One VersaTools
, 1/4 Rack Width Mini Projector Mounting Kit
®
VersaTools
Back of Rack Mounting Kit
®
USA West
USA West
+1.714.491.1500 / +800.633.9876
+1.714.491.1500 / +800.633.9876
+1.714.491.1517 FAX
+1.714.491.1517 FAX
Audio inPut
Number / Signal type . . . . . . . . . . . 1 set of stereo, balanced/unbalanced
Connectors . . . . . . . . . . . . . . . . . . . . . . . (1) 3.5 mm captive screw connector, 5 pole
Impedance . . . . . . . . . . . . . . . . . . . . . . . . >20k ohms unbalanced, 40k ohms balanced, DC coupled
Nominal level . . . . . . . . . . . . . . . . . . . . -10 dBV (316 mVrms) or +4 dBu (1.23 Vrms)
Maximum level . . . . . . . . . . . . . . . . . . +20 dBu (7.75 Vrms), balanced or unbalanced, at 1%THD+N, 0 dB gain
NOTE:
0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu.
Audio outPut
Number / Signal type . . . . . . . . . . . 1 set of stereo, balanced/unbalanced
Connectors . . . . . . . . . . . . . . . . . . . . . . . (1) 3.5 mm captive screw connector, 5 pole
Impedance . . . . . . . . . . . . . . . . . . . . . . . . 50 ohms unbalanced, 100 ohms balanced
Gain error . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5 dB channel to channel
Nominal level . . . . . . . . . . . . . . . . . . . . -10 dBV (316 mVrms) or +4dBu (1.23 Vrms)
Maximum level (Hi-Z) . . . . . . . . . . . >+25 dBu (13.78 Vrms), balanced, at 1%THD+N with 100k ohm load
Maximum level (600 ohm) . . . . . >+18 dBu (6.16 Vrms), balanced, at 1%THD+N
GenerAl
External power supply . . . . . . . . . 100 VAC to 240 VAC, 50/60 Hz, 5 watts, external, universal; to 12 VDC,
Power input requirements . . . . . 12 VDC, 0.2 A
Temperature / Humidity . . . . . . . . Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Rack mount . . . . . . . . . . . . . . . . . . . . . . Yes, with optional rack shelves (See optional accessories)
Enclosure type . . . . . . . . . . . . . . . . . . . Metal
Enclosure dimensions . . . . . . . . . . 1.7" H x 2.2" W x 3.0" D (1U high, one-eighth rack wide)
Product / Shipping weight . . . . . 0.2 lbs (0.1 kg) / 2 lbs (1 kg)
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . ISTA 1A in carton (International Safe Transit Association)
Listings / Compliances . . . . . . . . . UL, CUL / CE, FCC Class A, VCCI, AS / NZS, ICES
MTBF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,000 hours
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . 3 years parts and labor
NOTE:
All nominal levels are at ±10%, and all specifications are tested at unity gain unless otherwise noted.
Specifications are subject to change without notice.
Unbalanced
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rack Shelf Kit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USA East
USA East
+1.919.863.1794 / +800.633.9876
+1.919.863.1794 / +800.633.9876
+1.919.863.1797 FAX
+1.919.863.1797 FAX
s i g n A l P r o c e s s o r s
(The level of an unbalanced signal will be 6 dB lower.)
1 A, regulated
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
4.3 cm H x 5.6 cm W x 7.6 cm D (Depth excludes connectors.)
Extron
BUC 102
Balanced/Unbalanced
Audio Converter
T S
P U
A L
IN
N B
L /U
B A
2
1 0
R
B AL
C
B U
E
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AR
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B A
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1 2
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N B
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Balanced
TED
Extron
LIS
DIO
US
AU
APP
ARA
C
2
1
ITE
T
R/
, 50-6
0Hz
LIM
TEC
1.3A
PRO
NA
L
240V
SIG
DVD
100-
HPA 502
Half Rack Power
Amplifer
PArt #
60-651-01
PAGe
PArt #
page 819
60-190-01
page 818
60-190-20
page 815
70-212-01
page 813
70-217-01
page 817
70-367-01
www.extron.com
www.extron.com
© 2008 Extron Electronics. All rights reserved.
© 2008 Extron Electronics. All rights reserved.
Pricing and specifications may change without notice.
Pricing and specifications may change without notice.
Extron
300' STP 22
Dual Audio/
Control Cable
2
A 50
HP
ING
2 WIR
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T
2
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TPU
1
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x 2
REM
50W
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VOL/
10V
4/8
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2
17T
T
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DBY
/VID
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1
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LEV
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2
1
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Extron
SI 28
Surface-Mount
Speakers
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