System Q BAL604 Quick Start Manual

BAL604 & 654 - 4ch Active Video Baluns (Rx & Tx)
4Ch Active Balun Tx
Transmit Video Down CAT5 Up To 2000m!
The BAL604 4ch active balun receiver and the BAL654 active balun transmitter allow
transmission of real-time monochrome or colour video over Unshielded Twisted Pair (UTP)
CAT5. All types of composite signal are supported. A balun is required at both ends of the
cable run and the CAT5 can be connected via an RJ45 connector or via the appropriate
connection on the terminal block.
The BAL604 receiver must go at the DVR end of the cable run. For cable runs of up to 1000m
the BAL604 can be used with a passive balun at the camera end of the installation. For cable
runs of up to 2000m the BAL604 needs to be paired with an active balun transmitter such as
the BAL654.
Co-axial cables are classed as an "unbalanced" mode of transmission and CAT5 twisted pair is
known as a balanced mode. In this balanced mode, the two cores carrying the video signal
are balanced to a particular reference point and the cable twists enable a uniform rejection of
interference, e ectively cancelling it out. To produce an unbalanced signal
standing for BALanced to UNbalanced.
Baluns come in two distinct groups.
up to distances of about 500mtrs although if you are using baluns to send video signals back
to multiplexers, quads and DVRs it is recommended not to use passive baluns over 200mtrs.
Active baluns require power for their "active" circuitry and can send video signals up to 2km
down low-cost CAT5 cable. Most baluns do not allow you to send power down the CAT5 cable
so you will still need to power the camera
What's In A Balun?
Baluns contain small signal transformers that are specially tuned to match the cables
impedance and convert the unbalanced signal to a balanced one and vice versa. Passive
baluns just have the transformers and very little else in them. Active baluns have extra
electronic circuits used to amplify the signals helping prevent losses and also ltering out
unwanted noise.
For more information on pairing passive and
active baluns see online tip 317
BAL604
4Ch Active Balun Rx
BAL654
Passive
baluns require no power to operate and work
locally or run another separate cable for power.

01246 200 000
Features
• Transmit Up To 2000m
• 2.1mm 12V DC Socket (150mA)
• BNC Video Connections
• Twisted Pair & RJ45 Connections
• Brightness & Sharpness Control
• Range Control
Speci cation
Bandwidth
Video
Connections
CAT5
Connections
Max Distance
Power
Current
Power
Connection
Dimensions
Options Available
PART CODE
Other Products To Consider
BALUNs
are used,
Mini 1ch Passive
All speci cations are approximate. System Q Ltd reserves the right to
change any product speci cations or features without notice. Whilst
every e ort is made to ensure that these instructions are complete
and accurate, System Q Ltd cannot be held responsible in any way
for any losses, no matter how they arise, from errors or omissions in
these instructions, or the performance or non-performance of the
equipment that these instructions refer to.
WEE/CG0783SS
systemq.com
FUNCTION SPECIFICATION
8 MHz
BNC Sockets
Terminal Strips Or
RJ45 Sockets
2000m
12V DC
150mA
2.1mm DC Socket
203 x 119 x 48mm
DESCRIPTION
BAL604
4Ch Active Balun Receiver
BAL654 4Ch Active Balun Transmitter
2.1mm 500mA 12V
Baluns (Pair) DC Plug-in PSU
BAL102 POW150
This symbol on the products and/or accompanying
documents means that used electronic equipment
must not be mixed with general household waste.
For treatment, recovery and recycling please return
this unit to your trade supplier or local designated
collection point as de ned by your local council.
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