Xantech 791-44 Manual
Contents
1. IR Receivers Amplified Satellite Receiver A Connecting Block a Sah Cc 282M pact Mouse Emitter VCR Soe text fom 5 S OOOO g lt 7 DN 282M Emitter ki Laser Disc O ooooO Add resistor in series with Status line to adjust If ma SE Taare brightness if desired See step 5 this page if Am ositive i CD Changer 8 m I Sim Fig 6 Using the STATUS terminal o in a typical system 782 00 SEke KLAN Power Supply pa 283M To 120 VAC AV Receiver une unswitched 6 4 786 00 XK Power Supply Status Voltage DON 12V 10mA Fe Mouse Emitter Plug into a Switched AC Outlet on A V Receiver see text MAIN ROOM EQUIPMENT CABINET ETC MOUNTING The 791 44 can be conveniently mounted to a wall or shelf by using the two sheet metal screws supplied You may also apply the 4 self adhesive rubber feet Supplied if you wish to place the unit on a finished surface The unit may be mounted in any orientation to accommodate the installation 9 15 00 E o a es XC CC a 0 al E D i p O J 5 D 0 t 5 0 0 0 0 A i2. however it is recommended that 4 conductor home runs be pulled from each room to the 791 44 Connecting Block inthe 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 ina 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 gt 50 feet of inter room shielded cable it may be necessary to connecta470 Ohm 1 8 Watt resistor between IR IN signal and GND at the 4 screw terminals of the 791 44 Refer to 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 Shielded Cable s 7 om Ground Shield P shown 791 44 Input Terminals either a 100 Ohm or a 470 Ohm resistor
3. connected in oe series with each port The 100 Ohm choice delivers high Fig 3 Using a 470 Ohm Capacitance power output and the 470 Ohm setting is lower power Discharge Resistor 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 Fig 4 below 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 Inthe 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 Emitter Ports Low Power Mode Jumper Removed o Carefully insert jumper on vertical pair of pins when higher power is needed See note 2 below High Power Mode Jumper Installed E o a MM ech 0 O C 0 0 p 0 O 5 5 0 0 cr 5 0 0 0 0 u tn 2 The high power mode may be used in installations where you mount the emitters on an adjacent cabinet wall or door a short distance from the unit s sensor Another instance is when you place an emitter inside the device but cannot place it close to the IR sensor In such cases you may need the extra po
4. 0 80 IR Receiver and on a Smart Pad in a remote room shows the ON OFF status of an A V receiver The STATUS and GND terminals on the 791 44 provide convenient tie points for the voltage that drives STATUS indicators on certain Xantech products such as the 780 80 IR Receiver amp Smart Pad To connect such a system proceed as follows 1 Unplug all power plugs for the A V system 2 Plugai12V adapter such as the Xantech 786 00 Power Supply into a switched AC Outlet on the back of the A V receiver or integrated amplifier preamp etc 3 Cutthe attached plug offthe 12V adapter and connect the two leads to the STATUS and GND terminals on the 791 44 to STATUS to GND 4 Connect the 4 conductor inter room cable between the 791 44 the Smart Pad and the 780 80 as shown in Fig 6 5 If you wish to adjust the brightness of the Status LED on the 780 80 place a resistor in series with the STATUS lead as shown in Fig 6 Use a value that achieves the desired brightness level usually 1k Ohm to 10k Ohm 1 8 watt NOTE The brightness of the STATUS LEDs bank indicators on the Smart Pad cannot be adjusted Do not use a resister in series with them eS Oeh a 791 2 lM OREO 12V CB12 EEDS Blo RCVR is Connecting Block aS CT ex 08 082 IR Receiver ypaquex 34139394 Hl eK 7 Foot Quick Connect Cable IR OUT 49030 ses 791 44
5. Ses 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 MPLIFIED CONNECTING BLOCK xanteche CE Talk back LED Fig 1 Model 791 44 SPECIFICATIONS 4 screw plug in terminal for 12VDC GND STATUS amp IR IN Quick connect IR RCVR input 3 5mm mini stereo jack Red talk back LED flashes with IR input signal Ten EMITTER output ports parallel driven 3 5mm mini mono jacks HIGH IR OUT port for emitter expansion 3 5mm mini mono jack See Fig 5 Use of included jumpers connect either a 100 or a 470 Ohm resistor in series with each emitter jack for high or low power operation 282 283 284 286 series of Emitters may be used in any combination e Power requirements 12 volts DC Uses 781RG or 782 00 Power Supplies see item 3 be
6. al check specs on actual model d Each 730 Smart Pad draws 7 mA without signal and 65 mA with signal Each Smart Pad 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 ROOM ROOM 2 ROOM 3 ROOM 4 5 12V 490 00 Series 480 00 982 2 ncvr 3 Connecting Block Micro Link Dinky Link six C agen Link IR Receivers IR Receiver NTR Receiver O T roa Caps 3 Wire 3 Wire Cable amp Red Cable 490 30 series Stripe Tee Micro Link 191 44 Kom ue a a Amplified Satellite Receiver Connecting Block aoe IR OUT 12V IR OUT om om SNe ND AOS nee Emitter ie ih cAUTION 4 Fi E 282M 57 Emitter A lt OL 12 vor Laser Disc A E gme ip See i Foot a a oe 283M able with Quick A Blink IR ee Connect Stereo Mini Plug af ae S oak AV Receiver X30184 SNILIANNOD 283M Blink IR CD Changer For example the power supply needed for the system shown in Fig 2 is arrived at as follows a The no signal cu
7. low e 2 1 mm coaxial power jack e 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 3 701 A ONC es O 0 O C 0 0 p 0 O 5 5 0 0 cr 5 0 0 0 0 u tn 2 Be sure to connect the 12V Output and Gnd of each IR receiver and keypad to the respective 12VDC IR IN and GND of the connecting block as shown 3 Power Supply Requirements You may combine many Xantech keypads IR receivers controllers and emitters inasystem 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 The maximum current from a 782 00 Power Supply is 1000 mA Most IR receivers draw 2 mA without signal and 10 mA with sign
8. rrent for the five IR receivers is O e eee Ee SY4ALLINA 12 VDC o yii N o 0 gt o 781RG Dual Blink IR 5x2 10 mA a EH Cassette DecK b Assuming a Smart Pad keypad the with or ss e without signal current is 85 mA oo rertage 286M pn Note Since only one IR source can operate at a Dimmer Control time the lower current IR receivers and 730 vaita H keypads if used do not need to have their with Drape Cantraler Mouse Emitter signal currents included c The current for one 794 Interface module Fig 2 A typical 791 44 System 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 es XONCC Ch 791 2 lM e Now add up all the currents from steps 1 through 4 10 mA 85 mA 10mA 18 mA 123 mA total Therefore in this case one 781RG power supply can be used NOTE To avoid current hogging never 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
9. wer of the high power mode to blast through printed circuit boards or around chassis structures In addition when using the lower output 283 and 286 Blink IR s you may need the high power mode for some devices that have less sensitive IR sensors 3 The resistors also provide current sharing to each emitter and allow the use of dual emitters in combination with single emitters You may therefore connect any combination of the 282 283 284 amp 286 series of emitters in the same system such as that illustrated in Fig 2 to drive the desired number of devices When using less than 10 of the emitter ports you may plug into any of them without regard to order Emitter Expansion lf more than 10 emitter ports are needed you may daisy chain from the HIGH IR OUT port on the 791 44 to the IN OUT port on a model 790 passive connecting block as follows You may daisy chain up to a maximum of 9 model 790 s for 100 emitter ports total as shown in Fig 5 Be sure to use an ad a equate power supply CAUTION Never plug emitters directly into the HIGH IR OUT or HIGH IN OUTports To do so will destroy the emitters Connect to additional 790 s in the same way if required 791 44 gt AMPLIFIED Z CONNECT Zao Z CONNECTING BLOCK ee ae So yantethe Fig 5 Emitter Expansion Using The STATUS Terminal on the 791 44 Fig 6 illustrates a single zone system where the Status indicator on a Xantech 78
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