Options Available
PART CODE
DESCRIPTION
BAL604
4Ch Active Balun Receiver
BAL654
4Ch Active Balun Transmitter
All specifi cations are approximate. System Q Ltd reserves the right to
change any product specifi cations or features without notice. Whilst
every eff 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.
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 defi ned by your local council.
WEE/CG0783SS
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, eff ectively cancelling it out. To produce an unbalanced signal
BALUNs
are used,
standing for
BAL
anced to
UN
balanced.
Baluns come in two distinct groups.
Passive
baluns require no power to operate and work
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
locally or run another separate cable for power.
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 fi ltering out
unwanted noise.
01246 200 000
systemq.com
BAL604 & 654 - 4ch Active Video Baluns (Rx & Tx)
Other Products To Consider
Mini 1ch Passive
Baluns (Pair)
BAL102
2.1mm 500mA 12V
DC Plug-in PSU
POW150
1
BAL604
4Ch Active Balun Rx
BAL654
4Ch Active Balun Tx
For more information on pairing passive and
active baluns see online tip 317
317
Features
•
Transmit Up To 2000m
•
2.1mm 12V DC Socket (150mA)
•
BNC Video Connections
•
Twisted Pair & RJ45 Connections
•
Brightness & Sharpness Control
•
Range Control
Specifi cation
FUNCTION
SPECIFICATION
Bandwidth
8 MHz
Video
Connections
BNC Sockets
CAT5
Connections
Terminal Strips Or
RJ45 Sockets
Max Distance
2000m
Power
12V DC
Current
150mA
Power
Connection
2.1mm DC Socket
Dimensions
203 x 119 x 48mm
