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Troubleshooting – Muxlab CCTV Power-Thru Converter Balun User Manual

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© MuxLab Inc.

Installation:

1. At the camera side, connect the coaxial cable lead of the 500024-CNV into the

BNC-F connector of the CCTV camera.

2. At the camera side, connect the balun’s red and black wires to the 12VDC

power input terminals of the camera.

3. Connect a 4-pair Cat5e/6 cable to the balun. The cable must be terminated

straight-through with an RJ45 modular plug according to either the EIA 568A
or 568B wiring standard. Cross-connection hardware such as wall outlets and
patch panels may be used as required.

4. Note: The CCTV Power-Thru Converter Balun is reverse polarity

sensitive. When connecting the baluns, ensure that “Ring [R]” is
connected to “Ring [R]” and “Tip [T]” is connected to “Tip [T]”. Verify
that there are no split pairs or crossed wires.

5. At the head end (DVR or IP encoder), repeat steps 1 to 3 for the receiver side

balun or hub (i.e. 500024, 500130, 500124, 500126, 500127, 500136).

6. Power-on the CCTV equipment and central CCTV power supply. Verify

image quality.

7. The following diagrams show typical configurations using the 500024-CNV.

Troubleshooting

The following table describes some of the symptoms, probable causes and
possible solutions regarding the CCTV Power-Thru Converter Balun. If you
still cannot diagnose the problem, please call MuxLab Technical Support at
514-905-0588.

Symptom

Probable Causes

Possible Solutions

1. EMI interference.

Check that wiring is not too close to
transformers and ballasts.

2. Wires reversed on signal

pair on one side

Make sure that the wires on the
signal pair are not reversed on one
side.

Poor picture quality,
distortion, interference

3. Split pair

Check if the UTP pairs are split and
correct. Each signal pair must be
twisted.

1. Power-off.

Check power supplies of CCTV
equipment. Check power supply
fuse.

2. Wrong pin configuration Check pin configuration and verify

straight-through wiring.

No video image

3. Defective CCTV Balun

Change CCTV baluns for another
pair.

1. Exceeded distance

specifications

Check DC loop resistance and
verify if distance spec is exceeded.
Reduce cable length or eliminate
high-loss components.

Picture faded or weak

2. Lower grade UTP cable is

introducing high signal
losses.

Use signal repeater for extended
distance or replace cable by higher
grade.

1. Wrong pin config.

Check wiring

No power or
intermittent power
at camera

2. Distance exceeded

Verify distance specifications for
remote power. Move power closer
to camera.