2
4. If you have products in the same IR system that have different IR carrier frequencies, you will have
to adjust the 291-80 to a midway position. For example, some products may operate at 38 kHz and
others at 56 kHz. In this case, set the adjustment to approximately 47 kHz, a midway position just to
the right of the 48 kHz marking in Fig. 2.
NOTE: Some products are more tolerant of compromised frequency settings than others. You may
have to "fine tune" the adjustment to "favor" the least tolerant component for the best performance of
all units in the system.
Connecting IR Receivers From Other Rooms
The CB12 Connecting Block, supplied with the 291-80, has a three terminal input strip for connection of
external infrared receivers should you wish to control your equipment from other rooms.
• The terminals are marked V G S. (V= +12V, G=Ground and S=IR Signal).
• Make connections as shown in Fig. 3. Run a 3-conductor cable from each remote room to the VGS
terminals on the CB12.
(Use 24 gauge solid or stranded wire up to 200', 22 gauge up to 600', 20 gauge up to 2000' and 18 gauge
up to 5000' (unshielded OK).
• When you use a 291-10 or a 291-80 IR Receiver in a remote room,
do not plug in a power supply or use
the "OUT" jack on that par-
ticular CB12, as shown in
ROOM 3 of Fig. 3.
• You may use more IR re-
ceivers, in additional rooms,
connected in the same man-
ner. When connecting more
than ten 291-80's, use the
higher current power sup-
ply, Model 782-00.
291-80 Cable Connections
The 291-80 may also be used
where the 7-foot cable is not
long enough. Simply cut off
the mini plug, strip the leads
and splice them to a 3-con-
ductor extension cable using
a terminal block or other
means. Then connect the extension cable to the 3-terminal block on the CB12.
Refer to Fig. 4 and the table below to identify the leads for correct connections.
Fig. 3
Connecting IR Receivers From Other Rooms
7-Foot 3-
Conductor
Cable with
Quick Connect
Mini Plug
291-80
IR Receiver
To 120 V AC
(Unswitched)
781RG
Power Supply
Hand Held
Remote
VCR
3-Conductor
Room-to-Room
Cable
(unshielded OK)
Equipment
Mounted Behind
Closed Doors
CB12
Connecting Block
780-10
J-Box
IR Receiver
OUT
VGS
IR
RCVR
PWR
GND
OUT
+12V
+12V
OUTPUT
GND
780-10
J-BO
X
RECEIVER
XANTECH CORPORA
TION
SYLMAR, CA
91342
CB12
Connecting
Block
OUT
V G S
IR
RCVR
PWR
291-10
IR Receiver
(See Text)
X X
Model 286M
Dual Blink IR™
Mouse Emitter
(Not Included)
Satellite Receiver
ROOM 2
ROOM 3
ROOM 1
Table
Lead Identifications
3-Terminal Block
(not included)
+12V
GND
SIG
WHITE
RED
BLACK
3-Conductor
Extension
Cable
7 Foot 3-Conductor Cable
with Mini Plug Removed
291-80
CB12
OUT
VGS
IR
RCVR
PWR
CABLE LEADS
CIRCUIT ITEM
BLACK
WHITE
RED
GROUND
SIGNAL
+ 12 V
PLUG
RING
TIP
SLEEVE
Fig. 4
Direct Wire Connections
Tip
Ring
Sleeve
Insulators
Stereo Mini Plug
291-80
