CABLE CONNECTIONS
490’s 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-conductor
extension cable with a terminal block or other means. Then connect the
extension cable to the 3- or 4-terminal block on the connecting block.
3.5mm mini plug
Signal Name
TIP SIGNAL
RING GROUND
12VDC
The 3-conductor inter-room cable (24 gauge up to 200’, 22 gauge up to 600’,
20 gauge up to 2000’, 18 gauge up to 5000’), is run to the main room.
While it is possible to make wired connections without the connecting block,
it is not recommended. The connecting block reduces installation time, helps
to eliminate errors, allows easy troubleshooting and permits easy system
upgrades later, if needed.
IR CARRIER ADJUSTMENT
The 49085D is factory set to an IR carrier repeat frequency of 38kHz. 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 carrier frequencies
fall within the range of 32 kHz to 56 kHz, you can adjust the 49085D to match
them for the best range performance. The adjustment can be made through
the small opening in the rear.
To adjust, proceed as follows:
1. First, try the 49085D 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 that 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 remote control can control the component.
4. If you have products in the same IR system that has different IR
carrier frequencies, you will have to adjust the 49085D 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
