Installation and Adjustment Instruction for
BVT-225, BVR-225 & BVX-225
1
Introduction
The following units are covered in this manual:
The boxed video transmitter BVT-225
The boxed video receiver BVR-225
The boxed video repeater BVX-225.
All three units are fully compatible with other Ernitec twisted pair video equipment. However, the
specified transmission distance assumes the use of Series 225 equipment only.
1.1
Twisted Pair Video Transmitter BVT-225
The BVT-225 is a video transmitter for twisted pair cables housed in an IP 65 rated ABS-box. One
unbalanced video output for 75
Ω
coaxial cables are available; the output can be used
simultaneously if the video needs to be supervised from a local monitor. This feature might
eliminate the need for a video distribution amplifier.
The following settings are available: Selection of cable impedance, selection of output voltage on
the unbalanced and the balanced video output. The transmitter output is galvanically separated
from the twisted pair input in order to avoid ground loop problems.
The BVT-225 is mains supplied and is equipped with a mains change-over switch for selection
between 230 VAC and 115 VAC mains voltage.
1.2
Twisted Pair Video Receiver BVR-225
The BVR-225 is a video receiver for twisted pair cables housed in an IP 65 rated ABS-box. Two
unbalanced video outputs for 75
Ω
coaxial cables are available; both outputs can be used
simultaneously if the video needs to be supervised from two locations. This feature might eliminate
the need for a video distribution amplifier.
The following settings are available: Selection of cable impedance, unbalanced video output,
voltage adjustments and five different frequency adjustments.
The BVR-225 is mains supplied and is equipped with a mains change-over switch for selection
between 230 VAC and 115 VAC mains voltage.
1.3
Twisted Pair Video Repeater BVX-225
The BVX-225 is a video repeater, i.e. a combined video transmitter and video receiver for twisted
pair cables housed in an IP 65 rated ABS-box. On the receiver part of the BVX-225 two unbalanced
video outputs for 75
Ω
coaxial cables are available; both outputs can be used simultaneously. The
transmitter output is galvanically separated from the twisted pair input in order to avoid ground
loop problems.
The BVX-225 is mains supplied and is equipped with a mains change-over switch for selection
between 230 VAC and 115 VAC mains voltage.
2
Installation
Coaxial- and twisted pair cables can be connected to and removed from the units, although mains
voltage is connected.
Note:
The stated approvals and specifications are valid only if the equipment is installed according
to the instructions contained in this manual.
Twisted pair video equipment Series 225
2800-00054
