Kramer VM-9T, User Manual, Page: 5 / 13

Overview
3
3 Overview
This section describes:
The
VM-9T
, see section 3.1
The power connect feature, see section 3.2
Using shielded twisted pair (STP) / unshielded twisted pair (UTP),
see section 3.3
Recommendations for achieving the best performance, see section 3.4
3.1 About the VM-9T
The Kramer VM-9T is a high quality video audio line amplifier / CAT5
transmitter. It has looping inputs with selectable video input signal
termination, and distributes the signals to two identical outputs. The
composite video signals are on BNC connectors and the audio signals on
RCA connectors. In particular, the
VM-9T
:
Transmits the video and audio signal over CAT5 UTP cable to the
appropriate receiver with a transmission range of well beyond 1600 ft.
(more than 500 meters) over UTP cabling
Has a video bandwidth that exceeds 350MHz, ensuring transparency
even when operating at the highest resolution
Features front panel controls for audio level, video output level and
video cable equalization
Is housed in a desktop sized enclosure and is fed from a
100-240 VAC universal switching power supply
3.2 About the Power Connect Feature
The Power Connect feature lets you power a transmitter / receiver system by
connecting just one power adapter—to either the transmitter or the receiver.
The other unit is fed via the cable connecting between the
transmitter/receiver. The Power Connect feature applies as long as the cable
can carry power. The distance does not exceed 50 meters on standard CAT5
cable, for longer distances, heavy gauge cable should be used
1
.
For a CAT5 cable exceeding a distance of 50 meters, separate power supplies
should be connected to the transmitter and to the receiver simultaneously.
The power connect feature applies to the
VM-9T
. The
VM-9T
can power, for
example, the
712N
receiver (see the example illustrated in Figure 3).
However,
the 712N cannot power the VM-9T
.
1 CAT5 cable is still suitable for the video/audio transmission, but not for feeding the power at these distances