Kramer 711N, User Manual

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711N, 712N - Overview 3
3
3 Overview
The
711N
and
712N
are a twisted pair transmitter and receiver for composite video
and unbalanced stereo audio signals. The 711N transmitter converts composite
video and stereo audio to a twisted pair signal and the 712N receiver converts the
twisted pair signal back into composite video and stereo audio signals.
The 711N / 712N feature:
• A maximum bandwidth of 85MHz
• LINE IN, LINE LOOP and LINE OUT on RJ-45 connectors
The 712N LINE IN can be looped to add an additional output and includes a selectable
input signal termination push button
• A system range of up to 400 meters (1200 feet)
• Level (GAIN) and equalization (EQ) controls (on the 712N)
The 711N / 712N are part of the Kramer TOOLS™ family of compact high-quality
and cost effective solutions, and are fed from an external 12V DC source, making
them suitable for field operation.
3.1 About the Power Connect Feature
The Power Connect feature applies as long as the cable can carry power . This
feature is available when using STP cable and the distance does not exceed 50m
on standard CAT 5 cable. For longer distances, heavy gauge cable should be used
.
For units which are connected via RJ-45 connectors, make sure that the shield of
the STP cable is connected to the metal casing of the connectors on both ends of
the cable. For units which are connected via terminal block connectors, the shield
of the STP cable must be connected to a ground terminal on the units at both ends
(use the ground terminal of the power supply connection if necessary).
For a CAT 5 cable exceeding a distance of 50m, separate power supplies should
be connected to the transmitter and to the receiver simultaneously
.
CAT 5 cable is still suitable for the video/audio transmission, but not for feeding the power at
these distances