DCT2500 Installation Manual
Section 4
Adding the IR Blaster Option
The IR Blaster provides control of the subscriber’s VCR from the DCT2500. It consists of a
low-power infrared transmitter attached to a six-foot cord and a mounting bracket. The
mounting bracket is a clear plastic holder with a pad of adhesive tape for installing the
IR Blaster near the VCR IR receiver. A mini-pin connector at the end of the cord connects the
IR Blaster to the DCT2500.
Figure 4-1
IR transmitter installed in mounting bracket
Adhesive tape
Mounting bracket
Transmitter
The IR Blaster is controlled by the interactive program application on the DCT2500. Not all
applications support the optional IR Blaster.
The IR Blaster is automatically activated through the EPG. Individual VCR codes are
broadcast through the out-of-band data channel and are updated periodically as new codes are
added.
Locating the IR Receiver on the VCR
The IR receiver is not visible on some VCRs.
To locate the receiver:
1
Obtain a piece of opaque material, such as a 3- by 5-inch index card.
2
Use the card to block areas of the VCR where the receiver might be located. Turn the VCR
on and off, while pointing the remote control at the card blocking the VCR. Be sure the
remote control is close to the VCR to reduce reflections the receiver may pick up.
3
Note the area where the VCR is unresponsive to the remote control. This region contains
the receiver and can be marked by loosely taping the index card to the area.
Because the IR Blaster radiates an area approximately 40 degrees wide, it is not necessary to
be precisely on target with the remote control. Offset the location of the IR Blaster transmitters
from the VCR receiver to reduce interference with operation of the VCR remote control.
