B&K CT602 User Manual

Page of 88
RS-232 Swap Cable
Swap Cable Construction
A swap cable is used for communication of RS-232 (BKC-DIP, Device Interface Protocol) data between units
by swapping transmit and receive pins.  A swap cable can be used between a CT Receiver and a home the-
ater or a swap cable can be used between CT Receivers.  A swap cable is intended for one-way communi-
cation between the sender and recipient.  RS-232 is not prone to outside interference such as plasma or flu-
orescent light.  A CAT5 T568B B&K swap is illustrated below.
Using the CT-1 for System Expansion
One CT-1 IR Routing System Integrator provides a system with connections for up to:
One B & K Home Theater Preamplifier or Receiver with Keypad(s)
And 
Three CT Multi-Zone Receivers with Keypad(s)
And 
Nine shared identical sources.
The CT-1 IR integrator is the keystone to any multi-CT Receiver install.  A single CT-1 can integrate control
for up to three CT Receivers, one B&K Home Theater preamplifier/receiver, nine shared sources and one
CK1.2 Keypad.  The CT-1 uses IR as the communication interface between units, it can also pass RS-232
for control of a Home Theater piece.  Should future expansion be desired, a CT-1 easily allows additional CT
Receivers to be added to the whole house system.  Up to 11 CT-1 IR Integrators can be combined to accom-
modate 21 CT Receivers or 126 zones.  The CT-1 can be thought of as the common hub for IR control of the
entire CT system.  Each source is connected directly to the CT-1 along with any CT Receivers installed in
the system.  All zones will have the ability to control all nine sources when the CT-1 is used. 
HOME THEATER
FLASHER OUT
CT 3 FLASHER IN
CT 2 FLASHER IN
9
CT 1 FLASHER IN
CHAIN
IN
CT IN MASTER
9
8
7
6
5
4
3
2
1
CT2
OUT
8
7
6
5
4
3
2
1
CT1
OUT
IN
RS-232
XMIT
ROUTING
RS-232
XMIT
SENSOR
9
8
7
6
5
4
2
1
CT3 / CHAIN
OUT
3
3
OUT
9
8
7
6
5
4
2
1
+12V
G
ND
RC
V
NC
NC
1
9
+12V
IR
IN
G
ND
S E R I A L #
1
2
3 4
ON
5
6 7 8
9
ON
OFF
B K
&
S
B
I M P LY
E T T E R !
CAT5 T568B Swap Cable 
Bottom view of RJ-45
Bottom view of RJ-45
CT-1 IR Routing System Integrator
27