Knox Video R & T Cat - Manual (Page 7)

SECTION 1. GENERAL INFORMATION
1.1 INTRODUCTION
The KNOX CAT VIDEO DISTRIBUTION SYSTEM is a pair of devices, which accepts audio
and video signals and aggregates them into an arrangement capable of being extended over
ordinary unshielded twisted-pair Category 5, 5e or 6 cables. For improved distances nano-skew
cable may also be used. Featuring field configurable engineering, the Knox CAT Video
Distribution System can be quickly and easily re-configured for several modes of operation. The
system supports resolution and refresh rates up to QXGA (2048x1536 @ 60 Hz) and HDTV of
720p, 1080i and 1080p60.
CAT5/5e/6/nano-skew cabling must be pinned to the TIA-EIA T568B wiring specification. This
equipment is not intended for, nor does it support, connection through an Ethernet network. Do
not connect these outputs to any sort of networking or telecommunications equipment.
1.2 TECHNICAL DESCRIPTION
The CAT Video Distribution System uses an advanced instigated circuit with triple differential
twisted-pair drivers and receivers with common-mode sync encoding. The high bandwidth
enables differential signaling onto standard twisted-pair with very low harmonic distortion, while
internal feedback ensures balanced gain and phase at the outputs reducing radiated EMI and
harmonics.
The CAT Video Distribution System must be deployed as pairs of units. The customer will
always need to use at least one t-CAT (transmitter) unit and one r-CAT (receiver) unit. The t-
CAT unit will be connected to the source of the video (and possibly to the source of some audio
as well). A length of cable will connect the t-CAT unit to the r-CAT unit. The cable can be
CAT5, CAT5e, CAT6, or nano-skew cable. Whichever cable is used, the cable is a “straight”
EIA 568B cable wiring and is terminated with RJ-45 connectors. The r-CAT unit will be
connected to the video display device (and audio, if delivered, will be connected to an amplifying
device). The system will transport video supplied in several formats. Despite accepting multiple
formats, the system will not convert from one format to another format.
The user has a choice of digital (known as S/PDIF), or analog. For analog, the user also has a
choice of unbalanced, or balanced stereo, or mono. See below for details. Both units will handle
the same audio options.
1.2.1 VIDEO FORMATS
Composite (CVBS) on a BNC connector, or
Y/C (S-Video) on 2 BNC connectors, or
Component (Y,Pb,Pr/RGsB/YUV) on 3 BNC connectors, or
RGBVH on 5 BNC connectors.
1.2.2 AUDIO FORMATS
Analog Monaural (mono) audio,
Analog Stereo audio, or
Digital audio (S/PDIF).
1.2.3 AUDIO ELECTRICAL TRANSMISSION
Unbalanced on RCA connectors or
Balanced on 3 screw WECO terminal connectors,
S/PDIF (digital audio) on RCA connector.