IMPO
RTAN
T:
Go to www
.extron.com f
or the complete
user guide
, installation instructions,
and
specifications bef
ore connecting the
product to the po
wer sour
ce.
BUC 202 • Setup Guide
This guide provides instructions for an experienced installer to set up and operate the Extron
BUC 202 two channel unbalanced/balanced audio converter and line driver.
Rear Panel Features and Cabling
100-240V 50/60 Hz
0.2A MAX
1
2
1
2
TRIM
OUTPUTS
BUC 202
15
18
0
21
3 6
9
12
-15
-18
-21
-3
-6
-9
-12
15
18
0
21
3 6
9
12
-15
-18
-21
-3
-6
-9
-12
1
2
INPUTS
A
B
C
D
A
AC power
— Connect to standard AC power: 100 to 240 VAC, at 50 or 60 Hz.
B
Trim adjustment (channels 1 and 2)
— Adjust the audio input level for the channel using
the 16-position rotary switch. This switch sets the level in 3 dB increments from -21 dB to
+21 dB. The arrow on the shaft indicates the current setting.
C
Input connector
— This 3.5 mm 5-pole captive screw connector accepts line level
balanced or unbalanced, mono or stereo audio signals (see the illustrations below for
proper wiring).
Unbalanced Stereo Input
Balanced Stereo Input
Tip
Ring
Tip
Ring
12
Sleeves
Tip
Sleeve
Sleeve
Tip
12
Unbalanced Dual Mono Input
Balanced Dual Mono Input
(high impedance)
Tip
Ring
12
Sleeve
Tip
Sleeve
12
Do not tin the wires!
Tip-ring-sleeve and tip-sleeve connections:
NOTE:
Unity gain (0 dB) for both channels is at the 12 o’clock
(vertical) position with the arrow on the shaft pointing to the 0
position. When the switch is set to the bottom position (indicated
by a dot) the signal is muted (see
Adjusting the Trim
).
1
2
TRIM
15
18
0
21
3 6
9
12
-15
-18
-21
-3
-6
-9
-12
15
18
0
21
3 6
9
12
-15
-18
-21
-3
-6
-9
-12
Sleeve ( )
Ring (R)
Tip (L)
Tip (+)
Sleeve ( )
Tip-Ring-Sleeve
Tip-Sleeve
