Xantech 490-85 Bedienungsanleitung

08905105A - 1 -

INSTALLATION INSTRUCTIONS

490-85

CLF / LCD Friendly Micro Link IR Receiver

DESCRIPTION

The 490-85 is a CFL (compact fluorescent light) / LCD (liquid crystal display) version of the 490 Micro

Link series IR receivers. It is specifically designed to have greater immunity to high frequency

ballasted CFL and overhead fluorescent type infrared inference and to have exceptional IR reception

range.

These small IR receivers have been designed primarily for mounting in panels, doors, cabinets, etc.

for control of A/V equipment behind closed doors. They may be mounted in walls, ceilings, wall

speakers, etc. - anywhere an inconspicuous appearance is desired. Their high sensitivity allows

placement behind speaker grilles and still receiver IR commands up to 20 feet away.

FEATURES AND SPECIFICATIONS

IR carrier frequency reception bandwidth: 30 to 60 kHz.

IR carrier adjustment: 32 to 56 kHz (allows output carrier frequency to be matched to a

controlled component for optimum performance).

IR reception range: > 50 feet

Dimensions: 2.75” Length x 0.75” DIA. Bezel is 0.90” DIA.

Works in normal 3-wire mode (12VDC, IR, GND).

Red talkback LED for system verification.

RF Grid included for EMI interference reduction.

Includes 3-Terminal Block for easy extension of 7 foot ribbon cable.

7 units may be powered by one 781RG power supply.

Normal Operating Power: +12VDC, 20mA.

Note: The 490-85 will not operate in 2-wire Phantom Power mode.

INSTALLATION

This unit is meant to be interfaced to Xantech Connecting Blocks, such as CB12, 789-44, 791-44, etc.

MOUNTING

1. Drill a 3/4” hole in any flat surface, such as a cabinet panel. Pass the cable and body of the

490-85 through the hole and secure from the rear with the nut (supplied).

08905105A - 2 -

IR CARRIER ADJUSTMENT

The 490-85 is factory set to an IR carrier repeat frequency of 39kHz. This will be correct for the

majority of installations. However, some manufacturer’s components that you wish to control may use

different carrier frequencies (such as RCA DSS satellite receivers that use 56kHz). If sure carrier

frequencies fall within the range of 32kHz to 56kHz, you can adjust the 490-85 to match them for the

best range performance. The adjustment can be made through the small opening on the rear.

To adjust, proceed as follows:

1. First, try the 490-85 in a repeater system. If it works well with good range, do not make any

adjustments!

2. If it does not work or has poor range (less than 15 feet), determine the IR carrier frequency of

the product you wish to control. Contact the manufacturer of the product, if necessary, to

determine this frequency.

3. Using a small blade type screwdriver, rotate the adjustment shaft until the slot lines up with the

desired frequency.

4. If you have products in the same IR system that have different IR carrier frequencies, you will

have to adjust the 490-85 to a midway position. For example, some may operate at 38kHz and

others at 56kHz. In this case, set the adjustment to approximately 47kHz, a midway position.

Note: Some products are more tolerant of compromised frequency settings that 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.

Clock-wise (CW) Increase carrier frequency

Counter Clock-wise (CCW) Decrease carrier frequency

490-85 CABLE CONNECTIONS

The 490-85 may also be used where the 7-foot lead is not long enough. In this case, simply cut off

the mini plug, strip the leads and connect them to a 3-terminal block. For correct color identification of

wires, refer to the following tables and diagrams:

PLUG CABLE LEADS DESCRIPTION

RING BLACK GROUND

TIP WHITE IR OUTPUT

SLEEVE RED +12V

Tip

Ring

Sleeve Insulators

Mini Plug

(3-Conductor)

3-Terminal

Block

OUT

+1 V

GND

WHITE

3-Conductor

Wire to

Controlled

Equipment

490-85

7-Foot 3-Conductor Cable

with Mini Plug removed

See Tables for

Wire Color

08905105A - 3 -

APPLICATION WIRING

A typical system, with a 490-85, 781RG Power Supply and 283M Emitters plugged into a 791-44

Connecting Block, is shown in the figure below.

1. Plug the 3.5 mm stereo mini plug from the 490-85 into the 791-44 connecting block labeled “IR

RCVR”.

2. Plug in the 3.5 mm mono mini plug from any of the 282, 284, 283 and 286 series Emitters into

the jacks labeled EMITTERS on the 791-44 Connecting Block and affix the opposite end of the

IR Sensor Window of the controlled equipment.

3. Plug in the 2.1mm Coaxial power plug of the 781RG Power Supply (not included) into the jack

labeled 12VDC on the 791-44 Connecting Block.

4. Plug the AC end of the 781RG Power Supply into an ‘un-switched’ 120VAC outlet.

490-85

Series

IR Receivers

283M

Emitter

1 0 V AC

(Unswitched)

781RG

Power Supply

791-44

Amplified

Connecting Block

283M

Emitter

283M

Emitter

0.469"

1 7/8"

7 Foot 3-Conductor

Cable with Quick

Connect Mini Plug

+1 VDC

GND

EMITTERS

MODEL 791-44

AMPLIFIED

CONNECTING LOCK

XANTECH CORPORATION.

SYLMAR CA  MADE IN U.S.A.

12 VDC

OUT

STATUS

IR IN

RCVR

Hand Held

Remote

Controlled Equipment

(mounted behind

closed cabinet doors)

490-85

(mounted on or

near cabinet in an

inconspicuous

location). 283M

Emitter

283M

Emitter

Satellite Receiver

Cable Box

AV Receiver

CD Changer

Cassette DecK

08905105A - 4 -

IRTroubleshootingGuide

NOTE: Due to the many variables in a given installation, the troubleshooting countermeasures you will

have to take may vary from job to job. Each installation is different due to the number of IR receivers in

use, length of wire runs, type of wire, amount of ambient IR noise present, etc…. Therefore, your

countermeasures for a particular job will range from nothing at all, to any combination of the solutions listed

below.

Model#’s

IR Receivers: Model #’s 291, 480, 490, & 780 Series

Symptom#1:

DIMorNOTalkBackLEDduringIRReceptionorreducedoperationalrange

Cause: Solution

1. Weak Batteries in Transmitting Remote. Replace batteries.

2. Bad Emitter or no emitter plugged into

connecting block. Test emitter and verify wiring.

3. Signal wire between IR Receiver and the

Connecting Block is open. Recheck wiring.

4. Power Supply not putting out proper voltage.

Verify supply is a 12VDC regulated

supply reading between 11.5 to

13VDC under load. Should be using

Power Supply Model 781RG

(12VDC Regulated, 200mA) or 782-

00 (12VDC Regulated, 1.2A)

5. Output from the IR receiver/connecting block

is connected to a high impedance IR input jack

on a component.

If you are using a passive

connecting block, such as a 789-44,

and the system is not working, try

the amplified connecting block,

model 791-44. Put one of the small

plastic case jumpers supplied with

the block on the pins next to the

emitter jack. This will provide the IR-

in jack on the component with a

hotter signal.

6. IR Receiver is inoperable. Replace Receiver.

7. (XTRALINK Only) RF Amplifier is being used

on same COAX Line anywhere between the

Coupler (CPL94) and Injector (INJ94).

Need to use a Bypass Kit (model

BYPASS94 Kit) to route the IR

control signals around the

amplifier(s).

08905105A - 5 -

Symptom#2:

TBLEDonIRReceiver(and/orEmitters)Dimlylitorflickering

Cause: Solution

1. Signal and ground wires are reversed or

shorted either at the connecting block or IR

receiver. Recheck your wiring.

2. Defective emitter. Replace Emitter

3. Relatively high levels of ambient noise. This

can be due to any of the following: Sunlight,

florescent Lighting or Plasma Displays.

In this case use either a SUN filter

(SUN480, SUN490, SUN780), or

any of our ‘CFL Friendly’ IR

Receivers (291-80, 480-80, 780-80).

For Plasma Interference use the

490-90 or 780-90 ‘Plasma Friendly’

IR Receivers. These can also be

used in direct sunlight and in the

presence of ‘tube style’ florescent

lighting.

EMI induced noise. This can be due to light

dimmer controls or other radiating electronic

devices (PC’s or any poorly shielded electronic

device).

Reposition IR Receiver and/or

cabling away from emitting device.

You can also place a 470Ohm

resistor in parallel with the IR Signal

and GND connections on the

connecting block. This will also help

alleviate any stray capacitance in the

cable.

5. Plasma Interference

Use a 490-90 Plasma 'Friendly' IR

Receiver. If already using a 490-90

unit, please note the Plasma

interference can be reflected off of

any item it comes into contact with

within approx. 3ft. From the front of

the display. Keeping this in mind,

make sure that the 490-90 is free

from any obstruction that might

reflect back into the receiving eye.

08905105A - 6 -

Symptom#3:

TBLEDonIRReceiver(and/orEmitters)onsolid

Cause: Solution

1. Plasma Interference

Use a 490-90 Plasma 'Friendly'

Receiver. If already using a 490-90 unit,

please note the Plasma interference can

be reflected off of any item it comes into

contact with within approx. 3ft. From the

front of the display. Keeping this in mind,

make sure that the 490-90 is free from

any obstruction that might reflect back

into the receiving eye.

2. Voltage and Ground wires are reversed at

the connecting block or IR Receiver Recheck your wiring.

Relatively high levels of ambient noise.

This can be due to any of the following:

Sunlight, florescent Lighting or Plasma

Displays.

In this case use either a SUN filter

(SUN480, SUN490, SUN780), or any of

our ‘CFL Friendly’ IR Receivers (291-80,

480-80, 780-80). For Plasma

Interference use the 490-90 or 780-90

‘Plasma Friendly’ IR Receivers. These

can also be used in direct sunlight and in

the presence of ‘tube style’ florescent

lighting.

EMI induced noise. This can be due to light

dimmer controls or other radiating electronic

devices (PC’s or any poorly shielded

electronic device).

Reposition IR Receiver and/or cabling

away from emitting device. You can also

place a 470Ohm resistor in parallel with

the IR Signal and GND connections on

the connecting block. This will also help

alleviate any stray capacitance in the

cable.

5. Power Supply not putting out proper voltage. Verify supply is a 12VDC regulated

supply reading between 11.5 to 13VDC

under load.

08905105A - 7 -

Symptom#4:

TBLEDonIRRec.blinksbut283Mor286M'Blink'styleEmittersdonot

Cause: Solution

1. There may be a short, such as a staple

driven through the Signal and GND wires of

the IR Receiver and/or the emitter.

Recheck your wiring.

2. Emitter may be shorted internally Replace Emitter or use TEST EMITTER

to check circuit.

3 (XTRALINK Only) TV on same splitter with

no IR Receiver installed Place a DC Blocker (Model 203-00) on

any TV Leg without IR Receiver

Symptom#5:

IntermittentIRcontrol(I.e. buttons on remote need to be pressed multiple times)

Cause: Solution

1. Plasma Interference Use a 490-90 Plasma 'Friendly' Receiver

Relatively high levels of ambient noise.

This can be due to any of the following:

Sunlight, florescent Lighting or Plasma

Displays.

In this case use either a SUN filter

(SUN480, SUN490, SUN780), or any of

our ‘CFL Friendly’ IR Receivers (291-80,

480-80, 780-80). For Plasma

Interference use the 490-90 or 780-90

‘Plasma Friendly’ IR Receivers. These

can also be used in direct sunlight and in

the presence of ‘tube style’ florescent

lighting.

Long Wire Runs – shielded wire typically of

100 feet (30 meters) or longer causes a filter

effect due to accumulated capacitance of the

wire. Intermittent, or no IR control, could

actually be because of the longer wire runs.

Putting a 470-ohm resistor in parallel at

the connecting block between signal and

ground will effectively discharge the

capacitance of the wire. This will allow

the signal to travel farther on shielded

wire. Adding a resistor between the

input and ground of the connecting block

will drop the IR level down somewhat.

Passive connecting blocks, such as the

789-44, may not have enough signal

output for consistent control of the

equipment. You may have to upgrade to

an amplified connecting block to bring

the IR level back to normal. In these

cases, the 791-44 would be an ideal

connecting block for single zone

systems while the 795-20 would work

best for a 2-4 zone system.

08905105A - 8 -

Symptom6:

Emittersfunctionbutsome(orall)componentsdonotrespond.

Cause: Solution

1. Emitter placement is incorrect.

Reposition the Emitter so that it is

directly over the components sensor

window. Consult the components

owners manual of the unit for the exact

location of the IR Sensor Window.

2. Emitter placement is correct but the signal is

overpowering the unit or there is bleed-

through from other emitters close by.

Reposition the Emitter to a position that

is suitable for the unit. Use a 283 or

286M Blink style emitter (they have a

lower output than non-blink emitters 282

and 284M). If the components do not

need to be controlled directly without an

IR Repeater system (components are

located in an equipment closet), place a

Mouse Emitter Shield cover over the

Emitter (PN#MS1). The rounded (non-

stick) side of the emitter is a hi-output

side and can reflect off other devices

and overpower some components IR

Sensors. If using a CB12 connecting

block, try a 789-44 connecting block.

This has a series resistor at the output,

which will limit current to the Emitter.

Using a CFL-Friendly IR Receiver (291-80,

480-80, or 780-80) and trying to control a

unit with a carrier frequency greater then

40kHz (I.e. RCA DSS, Scientific Atlanta,

Jerald, and General Instruments Cable or

DSS Set Top Boxes).

If you are using the 291-80 or 780-80

CFL Friendly receiver, locate the Carrier

Frequency Adjustment on the unit and

using a small blade screwdriver, (3/32"

blade width max.) rotate the adjustment

for best performance of all the units in

the system. Note: The 480-80 version

does not have this feature; you will either

need to change the unit to a 291-80,

780-80 or the 490-90. The 490-90 is a

wide band unit and will not require any

frequency adjustment.

08905105A - 9 -

Symptom#7:

AbsolutelyNoFunctionality(Howtodeterminewhichcomponentisatfault)

Step: Component to Test Instructions

1. Verify Power Supply

With a Multimeter, measure the DC

Voltage of the supply while it is

connected to the Connecting Block. Put

the Negative lead of the meter on the

terminal marked GND and the Positive

Lead on the terminal marked 12VDC (or

V). You should get a reading between

11.5VDC and 13.0VDC. If not, remove

the supply from the Connecting block

and measure again this time directly on

the 2.5mm Coaxial plug. If it reads

between 11.5VDC and 13VDC, power

supply is most likely good. Reconnect to

the Connecting Block and proceed to

step 2. NOTE: In most cases this will

indicate the supply is good but in

some cases the supply can still be

bad (i.e. reads good when not

plugged in but may not be able to

handle the current load of the

system.)

2. Verify Emitter. (283M or 286M Blink

Style ONLY)

Remove the power supply from the

connecting block and all Emitters from

the output. Place a jumper wire on the

connecting block between IR and +12v.

Reconnect the Power Supply and one

emitter. The Emitter should Light bright

and solid. Repeat for all emitters.

3. Verify Emitter. (282M or 284M NON

Blink Style)

Use a diode tester to verify proper

Emitter operation. Remove Emitter from

Connecting Block. Place the Positive

Lead of the tester on the TIP of the

Mono Mini Plug and the Negative Lead

on the Shield of the Mono Mini Plug.

Meter should read a voltage. When the

leads are reversed (Positive lead on

Shield and Negative lead on TIP) you

should not get any voltage reading at all.

08905105A - 10 -

4. Verify IR Receiver.

Remove the power supply from the

connecting block and all Emitters from

the output. Place a jumper wire on the

connecting block between IR Signal and

GND. Reconnect the Power Supply.

With a known good hand-held remote,

shoot a constant IR Command at the

receiver and verify the TB LED on the

Receiver lights.

Xantech Corporation

13100 Telfair Avenue, 2/F

Sylmar, CA 91342

Phone: (818) 362-0353, Fax: (818) 362-9506

This document is copyright protected. No part of this manual may be copied or reproduced in any form without prior

written consent from Xantech Corporation.

Xantech Corporation shall not be liable for operational, technical, or editorial errors/omissions made in this document.

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