Problem

Reason

Troubleshooting Tip

(1) No Image

Insert the cable into the UHF/VHF terminal

Step 1: Please connect the 5C/2V cable to the AV terminal. (You may need a RCA Male to F Female Adaptor)

Step 2: Switch the TV in VIDEO mode by remoter.

(2)Blur image

Lens was not in focus.

Please let the lens be in focus. Please refer to here for detail.

(3)Blur image after using camera for several months.

Lens or housing were covered with dust.

Please clean the lens or housing, and you will get the clear image.

(4)Deranged image

CCTV Balun +/- mistake.

Please reconfirm the CCTV Balun +/- terminal, and make the + terminal to the other + terminal, - terminal to the obher - terminal.

Comment: Do not install the signal cable near the power cable, or you will get the distorted image easily.
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(5)Horizontal white or black noise.

A. Undervoltage, caused by:

1. Wrong voltage adaptor.

2.The adaptor was overloaded with the camera.

3. The adaptor was going to break down.

4. The AC power was unstable.

B. May be signal unbalanced.

C. Electric leakage.

Step 1: Please check the adaptor, and make sure the voltage is right. ( For example, using the adaptor with input AC 220V, but insert into the AC 110V socket. Or the adaptor was output DC 9V, but the camera was DC 12V type.

Step 2: Please check the adaptor if it was overload. (For example: Using the adaptor with output current 100mA, but the camera needs 500mA. Or using multi-camera with one adaptor.)

Step 3: If it it normal after you try the Step 1 and Step 2. Please try another adaptor for the camera. (Please using the adaptor with the regular voltage.)

Step 4: Please check the AC power. If the adaptor was input AC 220V, then the AC power must be AC 220V.

Step 5: If you check the Step 1~4, but the noise still exist. Please connect the camera to the monitor directly, then check the monitor. If the image was normal, it should be signal unbalanced problem. You can try the Coaxial Balun.

Step 6: This problem may be electric leakage. You can try the Coaxial Video Ground Loop Isolator or Coaxial Video Ground Loop Isolator built in VideoBalun.
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(6)Color is not perfect.

1. May be problem is caused by camera, capture card, or monitor.

2.The settings of DVR, capture card, or monitor are not correct.

3. This may be signal defect problem.

Step 1: Please adjust the color, hue, or contrast of the DVR or capture card until the color is correct.

Step 2: If you adjust the settings of DVR or capture card, but the color is still not perfect. You should try to tune the settings of monitor.

Step 3: If you tried the mentions above, but the color was still not normal. And it may be a signal defect problem. Please refer to next section for detail.

Step 4: If you tried the Step 1~4, but the color was still not perfect. You may change the DVR, capture card or monitor.

Comment a: There were some quality-difference between DVRs or capture card.

Comment b: It is usually that CCD in Sony chip has better color than CCD in Sharp chip.

(7)Multi-black-horizontal-line on the screen.

(8)The image was black/white when using the color camera. (Or the hue of image was not good enough.)

(9)The image on the screen was not stable, and moved up and down.

This should be a signal defect problem caused by :

1. The quality of cable was not good.

2. Bad contact.

3. The length of cable was too long and made the signal defect problem.

4.Using wrong distributor.

Step 1: Please use the 5C/2V coaxial cable, and do not use the AV cable.

Step 2: Please check the contact of cameras, DVRs, and make sure that the contacts between cable, camera or cable, DVR are contact perfectly.

Step 3: If the length of cable was more than 300 meters, you should try the amplifier products.

Step 4: When you want to distribute the signal of camera to multi-monitors, please use the distributor with power, or use the amplifier between the camera and monitor.

(10)The image on the screen was not stable, and moved up and down.

If the image moved up and down was not a signal defect problem, this might be a coaxial unbalance problem.

There some different intensity of signal transmit by cameras will transmit into the DVR when the cables between cameras and DVR have different length. And it usually makes a coaxial unbalance problem.  If you have  the same lengths between cameras and DVR, but there was still a coaxial unbalance problem. You may check the quality of cables. (Do not use a AV cable.)

Step 1: Remove the cable from DVR which different to other channels, and check the image on the screen. If it become normal when you remove the cable. And you should reduce the intensity of signal if this channel has a over intensity, or try the amplifier if this channel has a signal defect problem.
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(11)Horizental wave, Twill wave, Noise wave

(The bottom picture has the most noise.)

This should be an interference problem:

1. The wireless camera is spoilt by interference from other noise.

2. Interference from high frequency noise, motor noise, electromagnetic wave.

3. The quality of cable is not good.

4. Bad contact problem of coaxial cable terminal or CCTV Balun +/- terminal.

5. The adaptor is going to break down.

6. The adaptor do not have a regular voltage output.

7. The adaptor do not have enough power.

8. The terminal of cable has bad contact.

9. Electric leakage.

Precaution: We suggested that using the 5C/2V cable for CCTV system. Specially the CCTV system was near the pylon, substation, wireless transmitter, etc. Using the better quality of cable the better.

Step 1: If you used a wireless camera, please reduced the distance between transmitter and receiver. Or used the cable replaced the wireless transmission.

Step 2: Remove the interference source from the camera, DVR, cable, or monitor. Or you could use the Hi Frequency Interference Blocker.

Step 3:  Please check the cable if it is used for a long time. And you should re-install the new cable replace the old one.

Step 4: Check every contacts, and make sure there is no short circuit between + / - terminal. ( It usually occur while using CCTV Balun)

Step 5: Please try the Hi Frequency Interference Blocker or Coaxial Balun.

Step 6: If the CCTV system installed in the provisional construction or used the AC power by dynamo. The voltage or frequency of AC power might be unstable. We suggested that you could try the Hi Frequency Interference Blocker or Coaxial Balun.

Step 7: Please check that if you used a regular adaptor. If you used a non-regular adaptor, please changed it.

Step 8: Please check every contact in the CCTV system. Do not expose the metal shield of coaxial cable to environment, or you will get more noise. Or you can try the Hi Frequency Interference Blocker.

Step 9: Check if there is an electric leakage. (Grounding correctly could prevent electric leakage.) Or you can try Coaxial Video Ground Loop Isolator or Coaxial Video Ground Loop Isolator built in VideoBalun.
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(12)The image was black / white when used a color camera, and there were coarse black line in the image.

Mismatch of TV format. (NTSC / PAL)

The TV format could be classified according to NTSC, PAL. For example, the TV format in Taiwan is NTSC, and PAL in Europe. If your camera was NTSC, but it connected to the DVR in PAL type. It will make this problem. You should try to switch the TV format correctly. But some DVR could not be switched from different TV format, and you should assign the correct TV format before you order CCTV products.

Please refer to comment 1 for detail.

(13)

1.Light was not uniform.

2.The center was too bright than side.

Mistake 1: The view of camera was not correct.

Do not shoot the bright and dark object in the same image, or you will get this problem.

Mistake 2: The view angle of camera was not match the angle of IR light.

The view angle of camera should match the angle of IR light. For example, if you used 4mm lens for the camera, and you should try the 75 degree of IR light.

(14)Light was not uniform.

Suggestion:

1. Please avoid to shoot indoor and outdoor at the same time.

2.Do not shoot the white object or high reflectional object in the dark place. Or you should make it brighter in this place.
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(15)The image was too dark with noise.

Mistake 1: Using the manual iris lens, and the iris is almost closed.

Try to turn the iris ring left or right until the brightness is normal.

Mark "1" is the iris ring shown as the following figure:

Mark "1" is the iris ring shown as the following figure:

(15)The image was too dark with noise.

Mistake 2: Using the auto iris lens, and tuning the ALC too small.

Try to tune the ALC (LEVEL) knob right or left until the brightness is normal.

Comment: Auto Level Control=ALC LEVEL

(16)Overexposure

Mistake 1: Using the fixed iris lens, and disable the AES function of the camera.

Please enable the AES function of the camera as the following figure:

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(16)Overexposure

Mistake 2: Using the manual iris lens, but tuning the iris too big and disable the AES function of the camera.

Try to enable the AES function of the camera or tune the iris until the brightness is normal.

Mark "1" is the iris ring shown as the following figure:

Color rolling tips: If you used a manual iris lens, please try to disable AES function and tune the iris ring until the brightness becoming normal. But this tip should not be used in outdoor because it is a vari-light environment.

(16)Overexposure

Mistake 3: Using auto iris lens, but tuning the ALC too high and disable AES function of camera.

Try to tune the ALC right or left until the brightness becoming normal which shown as the following figures:

Comment: Auto Level Control=ALC=LEVEL

(17)The image was not normal after lightning.

The CCTV system might be struck by lighting.

Precaution: You should try the surge protection product and grounding it.