Rear Panel - B&K Reference 21 Owner's Manual

The processor's back panel is organized into groups of inputs and outputs for audio and video as shown below.
See back of this manual for an enlarged view.
15 14
AT T E N T I O N
O P T I C A L D I G I TA L I N P U T S
D A N G E R D ' E L E C T R O C U T I O N D A N G E R D ' E L E C T R O C U T I O N
S AT C D D V D
N E PA S O U V R I R N E PA S O U V R I R
F U S E
C AU T I O N : F O R C O N T I N U E D
P R O T E C T I O N A G A I N S T R I S K
O F F I R E R E P L A C E O N LY W I T H
S A M E T Y P E 1 2 A , 2 5 0 V F U S E
A C L I N E
C O A X D I G I TA L I N P U T S
T V-V 3 V 2
C AU T I O N
R I S K O F E L E C T R I C S H O C K R I S K O F E L E C T R I C S H O C K
R S - 2 3 2
D O N O T O P E N D O N O T O P E N S AT C D
1 2 3
1. AC fuse holder - Holds the AC Line fuse. Replace only with same type and value.
2. AC input receptacle - For attaching the supplied AC power cord to the processor.
3. RS-232 input - Computer interface applications.
4. Zone 1 (A) and Zone 2 (B) audio outputs - Variable level outputs for use with external amplifiers.
5. Serial number - The serial number is located on the back of your unit.
6. Antenna inputs - Connections for the AM and FM antennas.
7. Line inputs - Connections from your audio/video sources.
Red RCA jacks
White RCA jacks
Yellow RCA jacks
4 pin din jacks
8. Line level outputs - Fixed level outputs to an audio or video recorder.
9. Zone 1 (A) and Zone 2 (B) video outputs - Outputs to your video monitors.
10. IR in - Accepts input from external IR receptors. Connect an IR repeater ("home run") to IR IN for controlling
the processor. This method of control is useful when the front IR receptor is blocked (for example, by a cabinet
door) or to control the processor from another room. This input is typically used in place of an emitter attached to
the front panel.

REAR PANEL

13 12 11 10
D I G I TA L O U T P U T S C O N T R O L O U T P U T S I R I N
O P T I C A L 3 . 5 m m C O A X 1 2
Z 1
V 2 V 1
1 2 V D C
5 0 m A
+
V 3
3 . 5 m m
C O A X I N P U T
3 4 Z 2
S U R R O U N D O U T P U T S
C E N T E R L B A C K L S U R R F R O N T L
V 1
D V D / V L D S U B R B A C K R S U R R F R O N T R
- right analog audio
- left analog audio
- composite video
- S-video
9 8
Z 1 Z 2 Z 2 / V 2 V 1 TA P E TA P E S AT
Z O N E O U T P U T S L I N E O U T P U T S
4
10
7 6
C D D V D / V L D T V-V 3 V 2 V 1 T U N E R
F M a n t e n n a
SERIAL NUMBER
L I N E I N P U T S A M a n t e n n a
5