Extron electronics BUC 202 Manuale utente

IMPORTANT:

Go to www.extron.com for the complete

user guide, installation instructions, and

specifications before connecting the

product to the power source.

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

TRIM OUTPUTS

BUC 202

-15

-18

-21

-3

-6

-9

-12

-15

-18

-21

-3

-6

-9

-12

INPUTS

ABCD

AAC power — Connect to standard AC power: 100 to 240 VAC, at 50 or 60 Hz.

BTrim 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.

CInput 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

Sleeves

Tip

Sleeve

Tip

Unbalanced Dual Mono Input

Balanced Dual Mono Input

(high impedance)

Tip

Ring

Sleeve

Tip

Sleeve

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).

TRIM

-15

-18

-21

-3

-6

-9

-12

-15

-18

-21

-3

-6

-9

-12

Sleeve ( )

Ring (R)

Tip (L)

Tip (+)

Sleeve ( )

Tip-Ring-SleeveTip-Sleeve

BUC 202 • Setup Guide (Continued)

ATTENTION: The length of the exposed wires in the stripping process is critical.

The ideal length is 3/16 inches (5 mm). Any longer and the exposed wires may touch,

causing a short circuit between them. Any shorter and the wires can be easily pulled

out even if tightly fastened by the captive screws.

NOTE: Do not tin the wires. Tinned wires are not as secure in the connector and

could be pulled out.

DOutput connector — The 3.5 mm 5-pole captive screw connector outputs balanced or

unbalanced audio signals (see the illustrations below for proper wiring).

ATTENTION: For unbalanced audio output, connect sleeves to the center ground

pin. DO NOT connect sleeves to the negative (–) contacts. This would create a short

and possibly damage the unit.

NOTE: Do not tin the wires. Tinned wires are not as secure in the connector and

could be pulled out.

Do not tin the wires! Balanced Audio Output

Tip

Ring

Tip

Ring

Sleeves

Unbalanced Audio Output

Tip

No Ground Here

Tip

Sleeves

Front Panel

The green power LED on the front panel lights when the BUC 202 is receiving power.

Adjusting the Trim

The BUC 202 can be wired in four different configurations:

• Balanced input to unbalanced output

• Unbalanced input to balanced output

• Balanced input to balanced output

• Unbalanced input to unbalanced output

Follow the steps below to adjust the trim:

1. Disconnect power from all devices.

2. Wire the BUC 202 for either balanced or unbalanced stereo or dual mono audio input.

3. Wire the BUC 202 for either balanced or unbalanced audio output.

4. Set the trim adjustment:

a. Determine the input and output signal types (balanced or unbalanced) and whether it is

consumer or professional audio.

Find the trim adjusment setting according to the following table.

Output

Input

Balanced

Unbalanced

Consumer1

Professional2

Consumer1

Professional2

Balanced Unbalanced

Consumer1Consumer1

Professional2Professional2

0 dB

-12 dB

0 dB

-12 dB

12 dB

0 dB

12 dB

0 dB

6 dB

-6 dB

6 dB

-6 dB

18 dB

6 dB

18 dB

6 dB

NOTES:

1Consumer line level is -10 dBV ≈ -8 dBu.

2Professional line level is +4 dBu.

b. Use a small screwdriver to turn the appropriate trim adjustment switch to the desired

setting.

5. Reconnect power to all devices to test the audio.

6. If necessary, readjust the trim.

Using the ZipClip™ 200

To attach the BUC 202 to the ZipClip 200 mounting clip:

1. Insert the bottom of the BUC 202 down into the clip, starting with one end.

2. Pivot the other end down and press until the clip snaps into place.

To remove the BUC 202 from the ZipClip:

1. Press the tab on the ZipClip (1).

2. Pivot the BUC 202 and lift it out of the ZipClip (2).

To fasten the tie wraps for cable strain relief:

1. Attach the BUC 202 to the ZipClip 200

mounting clip as descibed previously.

2. Fasten loose cables to the ZipClip base.

a. Insert the tie wraps (“zip ties”)

along the notches on the side of

the BUC 202 and through the tie

wrap anchor points on the

ZipClip, then around the cables.

b. Connect and pull the tie wraps until

they are secure. Do not overtighten.

BUC 202

Tie Wrap

100-240V 50/60Hz

0.2A MAX

TRIM

OUTPUTS

BUC 202

INPUTS

-15

-18

-21

-3

-6

-9

-12

-15

-18

-21

-3

-6

-9

-12

BUC 202 • Setup Guide (Continued)

Mounting to Rack Rails Using a ZipClip

1. Fasten the ZipClip 200 mounting

clip to a rack rail using two rack

screws as shown in the

diagram on the right.

2. Insert the BUC 202 into the ZipClip

as described previously and press to

snap it into place.

Mounting to a Rack Shelf

The BUC 202 is one-quarter rack width wide.

Up to four BUC 202 units can be mounted side

by side directly onto a rack shelf.

1. Align the threaded holes in the bottom

of the BUC 202 with the holes in an Extron

rack shelf (1). Fasten the BUC 202 to the

shelf with two 4-40 x 3/16 inch screws as

shown on the right.

2. Bolt the rack shelf to the rack (2).

Under-Furniture Mounting

NOTE: The ZipClip is shipped with

a set of four wood screws.

1. Attach the ZipClip to the furniture

using two or more wood screws as

shown on the right (1). Make sure the clip

is oriented with the appropriate side facing

the mounting surface and with the tab

accessible from the front of the furniture.

2. Insert the BUC 202 into the ZipClip as

described previously and press to snap it

into place (2).

68-2351-50

Rev. A 03 14

100-240V 50/60Hz

0.2AMAX

TRIM

OUTPUTS

BUC 202

-15

-18

-21

-3

-6

-9

-12

-15

-18

-21

-3

-6

-9

-12

INPUTS

BUC 202

Side of Rack

ZipClip 200

Back of

Rack

Inside of Rack

BUC 202

(2) 4-40 x 3/16"

Screws

RSB 123

Rack Shelf

Rack Mounted

BUC 202

ZipClip 200

100-240V 50/60Hz

0.2AMAX

TRIM

OUTPUTS

BUC 202

-15

-18

-21

-3

-6

-9

-12

-15

-18

-21

-3

-6

-9

-12

INPUTS

Furniture Mounted

Extron Headquarters

+1.800.633.9876 (Inside USA/Canada Only)

Extron Asia

+65.6383.4400

Extron China

+86.21.3760.1568

Extron Korea

+82.2.3444.1571

Extron Europe

+31.33.453.4040

Extron Japan

+81.3.3511.7655

Extron Middle East

+971.4.299.1800

Extron India

+91.80.3055.3777

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