Xantech 791-44 Manual de Usario

Xantech No categorizado 791-44

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Modules & Connecting Blocks
791-44
INSTALLATION INSTRUCTIONS
791-44
AMPLIFIED CONNECTING BLOCK
The Model 791-44 is an Amplified Connecting Block that permits up to 10 single or 10 dual emitters (or any
combination thereof) to be driven directly at high or low power levels. Up to 100 emitter ports may be driven
using 790-00 passive connecting blocks 'daisy chained' from the HIGH IR OUT port. The 791-44 interfaces
all Xantech IR Receivers and Keypads to the emitters along with a power supply in an infrared repeater
system. It can also serve to provide emitter expansion at the output port of other Xantech devices, such
as the 590 Programmable Controller, the 710 Fone Link™ and the 796 Zone Expander. A floating terminal
is provided for "STATUS" line connections.
+ 1 2 V D C
GND
E M IT T E R S
12 VDC
HIGH
IR
OUT
STAT U S
IR IN
IR
RCVR
791- 44
AMPLIFIED
CONNECTING BLOCK
®
Fig. 1 Model 791-44
Talk-back LED
SPECIFICATIONS
• 4-screw plug-in terminal for , & +12VDC GND STATUS, , IR IN.
• Quick connect " " input (3.5mm mini stereo jack).IR RCVR
• Red talk-back LED flashes with IR input signal.
• Ten output ports, parallel driven (3.5mm mini mono jacks).EMITTER
• .HIGH IR OUT Fig. 5 port for emitter expansion (3.5mm mini mono jack). See
• Use of connect either a 100 or a 470-Ohm resistor in series with each emitter jack forincluded jumpers
high or low power operation.
• 282/283/284/286 series of Emitters may be used in any combination.
• Power requirements: 12 volts DC. Uses 781RG or 782-00 Power Supplies (see item 3 below).
• 2.1 mm coaxial power jack.
• Dimensions: 6" W x 2-1/4" D x 15/16" H
INSTALLATION
Fig. 2, next page, illustrates a typical installation of a 791-44 in an IR repeater system. A variety of Xantech
IR Receivers and a keypad are shown. When configuring a system, please keep the following items in mind:
1. More IR receivers may be wired in parallel, in the same manner as shown, up to a maximum of twelve.
More than twelve is not recommended because IR noise picked up by the many IR receivers may
cause erratic operation and reduce remote control range.
NOTE: This restriction does not apply to Xantech Smart Pads. These may be added virtually without
limit, provided power supply requirements are taken into consideration. See item 3.
2791-44
2. Be sure to connect the +12V, Output and Gnd of each IR receiver and keypad to the respective
+12VDC GND, IR IN and of the connecting block as shown.
3. Power Supply Requirements. You may combine many Xantech keypads, IR receivers, controllers and
emitters in a system. Having sufficient power supply voltage and current available is critical for proper
operation. Be sure to take the following factors into consideration:
a) The maximum current for proper operation from a 781RG Power Supply is 120 mA (milliamps).
b) The maximum current from a 782-00 Power Supply is 1000 mA.
c) Most IR receivers draw 2 mA without signal and 10 mA with signal (check specs. on actual model).
d) Each 730 Smart Pad draws 7 mA without signal and 65 mA with signal.
e) Each Smart Pad2 or 3 draws 85 mA with or without signal.
f) Each emitter draws 3 mA in low power mode and 12 mA in high power mode.
g) Add 10 mA for each 794 or 797 Interface module used, if they are powered from the 791-44.
h) When using combinations of these devices, add up the currents as shown in the following example.
Then choose the power supply or supplies. Do not exceed their maximum current capabilities as
noted above!
For example, the power supply needed for the system
shown in is arrived at as follows:Fig. 2
a) The no signal current for the five IR receivers is
5 x 2 = 10 mA.
b) Assuming a Smart Pad2 or 3 keypad, the with or
without signal current is = 85 mA.
Note: Since only one IR source can operate at a
time, the lower current IR receivers (and 730
keypads if used) do not need to have their "with
signal" currents included.
c) The current for one 794 Interface module
= 10 mA.
d) The current for six emitters is 6 x 3 = 18 mA (in the low power mode. Also the 286 dual emitters
count as only one, since they are in series).
OUT
+12V
IR IN
GND 1
GND 2
+1 2V
1 (ON)
0 (OFF)
1 2 3 4 5 6 7 8 9 1 0
ON
SENDER/
EMITT ER
1 2 3 4 5 6 7 8 9 10
ROOM 4
OUT
V
IR
RCVR
PWR
G S
291-10
Hidden Link™
IR Receiver
GND
+12V
7 Foot Quick
Connect Cable
CB12
Connecting Block
X
To 120 VAC
(unswitched)
781RG
Power
Supply
791-44
Amplified
Connecting Block
Satellite Receiver
AV Receiver
VCR
MAIN ROOM, EQUIPMENT CABINET, ETC.
282M
Mouse Emitter
282M
Emitter
283M
Blink-IR™
7 Foot 3-Conductor
Cable with Quick
Connect Stereo Mini Plug
490-30 Series
Micro Link™
IR Receivers
GND
+12V
ROOM 3
780-10
J-Box
IR Receiver
490-00 Series
Micro Link™
IR Receivers
3-Wire
Cable
GND
+12V
480-00
Dinky Link™
IR Receiver
Red
Stripe
GND
IR OUT
+12V
ROOM 2ROOM 1
286M
Dual Blink-IR™
3-Wire
Cable
IR OUT
GND
+12V
Red
Stripe
+12V
IR OUT
GND
780-10
J-BOX RECEIVER
XANTECH
CAUTION:
See text, item 5.
CD Changer
Cassette DecK
Laser Disc
283M
Blink-IR™
Makita
Drape Controller
Dimmer Control
794-60
Universal
Interface 286M
Dual Blink-IR™
282M
Mouse Emitter
794
UNIVER SAL INT ERFAC E
GND
Smart
Pad2 or 3
ST
See
Item 4
below
+12 VDC
+ 1 2 V D C
GN D
E MI T T E RS
12 VDC
HIGH
IR
OUT
S T AT U S
IR IN
IR
RCVR
791- 44
AMPLIFIED
CONNECTING BLOCK
®
IR OUT
IR OUT
IR OUT
XA N TE CH
Fig. 2 A typical 791-44 System
3
Modules & Connecting Blocks
791-44
e) Now add up all the currents from steps 1 through 4.
10 mA + 85 mA + 10 mA + 18 mA = 123 mA total.
Therefore, in this case, one 781RG power supply can be used.
NOTE: never To avoid current "hogging", connect regulated supplies, such as the 781RG or the 782-00,
in parallel!
CAUTION: Do not use unregulated 12V power supply adapters from other manufacturers. These may
deliver excessive voltage to the IR receivers and cause them to “latch-up”. When this occurs, the “talk-back”
LEDs and 283 Blink IR's (if used) will stay on continuously!
4. For clarity, connections in this illustration are shown going to a 3-conductor bus in a "daisy chain"
fashion. In an actual installation, however, it is recommended that 4-conductor "home-runs" be pulled
from each room to the 791-44 Connecting Block in the main room. This maintains higher power supply
voltage to each IR receiver and keypad for best operation (plus a spare lead).
5. The "IR RCVR" jack on the 791-44 allows the 490-30 (and other Xantech IR Receivers outfitted with
a 3.5 mm stereo mini plug) to be plugged directly into the 791-44. You can do this when the 791-44
Connecting Block is within reach of the IR receiver's cable -- such as when installing the 490-30 in a
cabinet where the controlled equipment is behind closed doors.
CAUTION:
Plug only Xantech IR Receivers equip-ped with a stereo mini plug into the IR RCVR jack.
Do not plug in emitters or other devices. To do so will destroy emitters and damage power supplies!
CAUTION For Shielded Wire and Long Lead Lengths
When using long lengths (> 50 feet) of inter-room shielded cable, it may be necessary to connect a 470 Ohm
1/8 Watt resistor between (signal) and at the 4-screw terminals of the 791-44. Refer to IR IN GND Fig. 3.
The resistor discharges the cable capacitance more
quickly, allowing IR codes of high bit rates to pass without
data loss for consistent command executions.
Emitter Output Ports - High and Low Power Settings
The emitter ports are driven in parallel with a choice of
either a 100 Ohm or a 470 Ohm resistor connected in
series with each port. The 100 Ohm choice delivers high
power output and the 470 Ohm setting is lower power.
The high power setting is achieved by plugging a small
jumper (10 are supplied) onto the pair of pins adjacent to the desired emitter port, as shown in below.Fig. 4
The low power option is with the jumper removed.
NOTE: The 791-44's are shipped from the factory with the jumpers removed (low power position).
Consider the following factors when choosing high or low power modes:
1. In the majority of cases, when you mount an emitter on the IR sensor window of the controlled device,
you would use the low power mode (jumpers removed). This prevents overload of high gain sensor
circuits and allows proper operation.
+ 1 2 V D C
G N D
S T AT U S
IR IN
470 Ohm
resistor
Shielded Cable(s)
to remote room(s)
791-44 Input
Terminals
Ground Shield as shown
Fig. 3 Using a 470 Ohm Capacitance
Discharge Resistor
Low Power Mode - Jumper Removed
High Power Mode - Jumper Installed Carefully insert jumper on vertical
pair of pins when higher power is
needed. See note 2 below.
Emitter Ports

Especificaciones del producto

Marca: Xantech
Categoría: No categorizado
Modelo: 791-44

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