Xantech Ir Carrier Adjustment, 490-85CABLE CONNECTIONS, Cable Leads, Mini Plug

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
RING	BLACK
TIP	WHITE
SLEEVE	RED

DESCRIPTION GROUND

IR OUTPUT +12V

490-85

Ring

	Tip	WHITE
		OUT
		+12V
Sleeve	Insulators	GND
		See Tables for
Mini Plug		Wire Color
		7-Foot 3-Conductor Cable
(3-Conductor)		with Mini Plug removed

3-Conductor

Wire to

Controlled

Equipment

3-Terminal Block

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