How to Use Model 985DTO Distribution Amplifiers
The Model 985DTO adds optical digital audio output to the common coaxial digital audio outputs available on our other distribution amplifiers. Like other members of the 985 family, 985DTO modules can be cascaded to allow virtually an unlimited number of television monitors to be driven from a single source without picture degradation. The ultra wide bandwidth of this product supports video standards from today on into the future. The 985DTO can also be used for RGB video distribution in video production and duplication facilities.
Digital audio distribution complements the 985DTO’s video capability by providing lossless transmission of digital audio signals in both optical and coaxial formats from the source to four audio control centers. Only one of the digital audio inputs is necessary to support both optical and coaxial output formats. Either digital audio input is automatically converted to both optical and coaxial digital audio output formats at each 985DTO amp.
When demonstrating audio equipment, such as HTIB (Home Theater In a Box), one 985DTO may support up to 12 systems (eight HTIB systems with digital audio and four additional systems with analog audio). To do this, connect the coaxial outputs to four HTIB systems, and
connect the optical outputs to four more HTIB systems. The stereo analog audio outputs may be used for HTIB systems that do not have a digital audio input (e.g. many “all in one” receiver/DVD combination units). As an alternative, analog outputs may be connected to TV analog audio inputs (see examples in Figure 1).
Single Amplifier Installation – Four or Fewer Video Displays
Mount the 985DTO to a surface located near the video displays and/or audio equipment. Use matched sets of high- quality
Connect each video display to one set of 985DTO outputs using matched sets of video patch cords. You may connect the digital audio input of a sound system to either Digital Audio output jack on the 985DTO.
Figure 1.
Component
Video Source
Only A or B
B
HTIB System and Speakers
HTIB System
and Speakers
B
input is needed
to support all digital audio outputs
OUTPUT
A
B
C
D
INPUT
A. Digital Audio (Coaxial)
B. Digital Audio (Optical)
C. Analog Stereo Audio
D. Component Video
985DTO | 985DTO |
A
BUS
OUTPUTAudioAnalog
Stereo
985DTO
BUS
HTIB System
and Speakers
OUTPUT | HDTV |
|
C
D
OUTPUT
Caution!
Use only an Audio Authority
