Muxlab Active CCTV Transmitter Balun User Manual

Specifications

Environment Video NTSC, PAL, SECAM. CCTV equipment for security and

Devices CCTV cameras, DVR, IP camera encoders, monitors, switchers and

Transmission Transparent to the user.
Bandwidth DC to 8 MHz.
Maximum Input 1.2Vp-p unbalanced
Maximum Output +/-5V balanced
Gain 100kHz: Variable from 2dB to 7dB. 5MHz: Variable from 13 dB to 40 dB
Return Loss Greater than 15 dB @ 1 MHz.
Ground Loop Isolation Isolation between video input and output up to ± 5V
Common Mode
Rejection
Max. Distance Color –
Cat5

Gain compensation
switches
Cable – UTP

Cable – BNC Impedance: 75 ohms at 1 MHz (RG59/U mini coax).
Connectors

Reverse polarity
sensitive

Impedance Input: 75 ohms (BNC) Output: 100 ohms (screw terminals)
Power requirements 500100: 12VDC @ 60mA max. 500101: Floating 24VAC @ 70mA RMS

Power surge protection Surge protection on power input.
Temperature Operating: 0° to 50° C. Storage:-20° to 85° C. Humidity: up to 95%
Enclosure ABS fire retardant plastic, black
Dimensions 1.25” (3.1 cm) x 0.62” (1.6 cm) x 0.62” (1.6 cm) plus 8” (20.3 cm)

Weight 1.0 oz (28 gms)
Warranty Lifetime
Order Information 500100 Active CCTV Transmitter Balun, 12VDC

surveillance.

multiplexers.

15 kHz: 60 dB typ. 8 MHz: 40 dB typ

Up to 3,000 ft (0m to 914m) with passive balun (500009) at receiver.
Up to 6,000 ft (0m to 1,828m) with active balun (500015 or 500120) at
receiver.
Four (4) settings based on cable length.
Factory setting: 750 ft to 1,500 ft (229m to 457m)
24 gauge or lower solid copper twisted pair wire impedance: 100 ohms at 1
MHz. Maximum capacitance: 20 pf/foot. Attenuation: 6.6 dB/1000 ft at 1
MHz

BNC-M for video with 8” minicoax lead
2-wire red/black cable lead for input power.
Two (2) screw terminals for video twisted pair

max. Shares power with camera PSU. Connects camera power terminals.
Overvoltage protection shut-off above 40Vp-p

minicoax lead

500101 Active CCTV Transmitter Balun, 24VAC

Active CCTV Transmitter Balun

(500100 [12VDC], 500101 [24VAC])

Quick Installation Guide

Introduction

The VideoEase Active CCTV Transmitter Balun (500100, 500101) provides enhanced
performance for a single CCTV video channel via Cat5 unshielded twisted pair (UTP)
cable. The balun is installed at the CCTV camera and is powered by the camera power
supply. There are two (2) models; 500100 for 12VDC cameras and 500101 for 24VAC
cameras. The Active CCTV Transmitter Balun features ground loop isolation and manual
gain compensation adjustment based on cable length.

Installation

The Active CCTV Transmitter Balun is designed to be installed at the CCTV camera
only. In order to install the Active CCTV Transmitter Balun, perform the following
steps:

1. Determine the cable length between the CCTV camera and the receiver at the

head end.

2. The Active CCTV Transmitter Balun has a 4-position gain adjustment DIP

switch. The switch is factory set for a cable length of 750 ft (228m) to 1,500 ft
(457m). If the cable length is within this range, proceed to Step 6. If the cable
length is outside this range, proceed to the next step to adjust the switch setting.

3. In order to access the gain adjustment switch, slide the cover off the balun to

reveal the internal components as shown in the following figure.

8114 Trans Canada Hwy, St. Laurent, Quebec, Canada, H4S 1M5

Tel.: [phone] Fax: [phone]

Toll Free (North America): [phone]

E-mail: [e-mail] URL: www.muxlab.com

94-000609-A SE-000593-A

© MuxLab Inc. 2007

4. Consult the following gain adjustment switch table to determine the correct

Make sure that the wires on the signal

switch setting according to cable length. ON=Up. OFF=Down

Length - ft (m) SW1 SW2 SW3 SW4

0 to 750 (0 to 228 OFF OFF ON ON
750 to 1,500 (228 to 457) ON OFF OFF ON
1,500 to 2,250 (457 to 685 OFF ON ON OFF
2,250 to 3,000 (685 to 914) ON ON OFF OFF

5. With a pointed tool, slide the gain switches into the correct position as shown in

the following diagram. The UP position is ON. The DOWN position is OFF.

6. Connect the red/black power lead to the power input terminals of the CCTV

camera. Connect the CCTV power supply to the same terminals. If 24VAC is
used, ensure that it is floating with respect to ground. Caution: Using a non­floating 24VAC PSU may cause permanent damage to the balun.

7. Connect the balun’s coax video lead to the BNC video output of the CCTV

camera. The following diagram shows the completed connection.

8. Identify the pin configuration of the balun on the twisted pair side. One twisted

pair is required per camera video signal. Note: The CCTV Balun video output
is reverse polarity sensitive. Please ensure that “Ring” is connected to “Ring”
and “Tip” is connected to “Tip”.

9. At the head-end connect a passive CCTV Balun (i.e. 500009, 500023, 500130)

or Active CCTV Receiver Balun (500015) into the BNC connector of the CCTV
receiver equipment (i.e.; DVR, IP encoder or monitor).

10. Complete the connection between the two baluns, using standard UTP cable,

connector blocks and modular wall outlets.

11. Power-on the CCTV equipment and check the picture quality. The video should be

clear and sharp within the maximum specified distances. The following diagram
shows a couple of typical installations.

Troubleshooting

The following table describes some of the symptoms, probable causes and possible
solutions in respect to the installation of the Active CCTV Transmitter Balun. If you still
cannot diagnose the problem, please call MuxLab Customer Technical Support at 1-877
689-5228.

Symptom Probable Causes Possible Solutions

Poor picture quality,
distortion, interference,
etc.

2. Wires reversed on

3. Split pair Check if the UTP pairs are split and

4. Ground loop voltage

No video image 1. Power-off. Check power supplies of CCTV

2. No power Check power leads from balun

3. Wrong pin

4. Defective CCTV

5. Power overvoltage Reset balun by turning camera power

Picture over­compensated

Picture faded, weak
or no color

1. EMI interference. Check that wiring is not too close to

transformers and ballasts.

signal pair on one
side

greater than 5V

configuration

Balun

1. Too much

gain

2. Not enough

gain

pair are not reversed on one side.

correct. Each signal pair must be
twisted.

Equalize ground loop differences.

equipment.

Check pin configuration and verify
straight-through wiring.

Change CCTV baluns for another
pair.

off and on.
Adjust gain switch to lower setting

Adjust gain switch to higher setting.

© MuxLab Inc. 2007