Swann NHD-830 User Manual Download Page 11

11

Troubleshooting

Q: 

I can’t see anything at night!

A: 

There are a few possible solutions to this problem. Here are some of the most 

common.
• 

If the image is mostly black, then this may indicate that the night vision isn’t 

turning on. A bright light source somewhere in the picture can fool the light 

sensor into thinking it’s still daytime - try re-aiming the camera. 

• 

If the image is mostly white, then this indicates that the IR light from the night 

vision is bouncing back into the lens. If you’re using the dome version of the 

camera, ensure that the lens is protected from reflected IR light by the interior 

dome cover and the rubber seal around the lens.

• 

IR light from the night vision can also be reflected back into the camera by 

glass, perspex, otherwise transparent plastics and spider’s webs. Ensure that the 

cameras viewing area is free from these obstructions - if you want to see outside, 

then the camera itself needs to be outside!

Q:

 The NVR is not detecting the camera. 

A:

 If you are using PoE, ensure that the connection between the camera and NVR 

is direct - i.e. no hubs, switches, adapters or other devices. Ensure you’re using only 

the supplied cable. Ensure that all cables are properly connected and secure. If this 

doesn’t work, try using a different channel on the NVR - reboot the system between 

connections to ensure a proper IP address refresh. If this doesn’t work, then try a 

different network cable - there may be a breakage.

Q:

 Everything looks blurry/soft.

A: 

You probably need to adjust the focus (see the mounting/aiming instructions). 

This is simply a matter of removing the appropriate control screw one way until you 

find the best focus point or it won’t turn any more. Then, turn it back the other way. If 

there is no “sweet spot” then this indicates one of two things.
1.  Your lens might be dirty. Clean the front of it with a dedicated lens cleaning cloth 

(available at any camera store). Avoid using solvents or cleaning chemicals, as 

these can leave a residue.

2.  You might be trying to focus on something outside the “depth of field” - objects 

need to be at least a certain distance from the camera for you to be able to focus 

on them. Typically, this will be only a few feet (about 1m) but this distance can 

increase dramatically if the lens is zoomed in, or in low light conditions.

3.  Be sure to properly re-seal the camera housing after adjusting either the zoom 

or the focus!

Summary of Contents for NHD-830

Page 1: ...1 English Varifocal IP Camera for use with Full HD Swann NVRs NHD_830_831CAM_131113E...

Page 2: ...goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to major failure Warning Modifications not approved by the party responsible for compliance co...

Page 3: ...ion you can find information on our website www swann com Where to Begin This short manual will walk you through the connection mounting aiming and lens configuration of your camera as well as suggest...

Page 4: ...s other than those supplied with your camera NVR nor modifying the supplied cables Optional Advanced Users Only DC 12V Input The camera is intended to be powered via PoE Power over Ethernet This means...

Page 5: ...dle the weather long term exposure to temperature fluctations direct sunlight particularly UV and moisture will eventually cause a degradation in performance There are some times however that it s ess...

Page 6: ...6 Mounting the Camera Standard Housing a b c 1 2 3 Thezoomandfocuscontrols are located inside the camera barrel Zoom Focus...

Page 7: ...the camera s hood 2 Remove the hood 3 Turn the front part of the barrel counter clockwise to remove it The zoom and focus controls are located inside To adjust the zoom and focus controls You ll need...

Page 8: ...8 Mounting the Camera Dome Housing Fig A Fig B 1 2 Fig C Thezoomandfocuscontrols are located underneath the lens assembly Zoom Focus...

Page 9: ...hown on the diagram opposite but don t remove the screw entirely First set the zoom to the level you desire This will be determined by how large an area you want to monitor and how far away from the c...

Page 10: ...ion picture but reality has near infinite resolution You can gain some detail by tweaking the zoom but this comes at the cost of viewing area there s no substitute for proximity Areas with varied ligh...

Page 11: ...ters or other devices Ensure you re using only the supplied cable Ensure that all cables are properly connected and secure If this doesn t work try using a different channel on the NVR reboot the syst...

Page 12: ...27 2799 Option 1 M F 9am 5pm US PT AUSTRALIA toll free 1300 138 324 NEW ZEALAND toll free 0800 479 266 UK 0203 027 0979 Helpdesk Technical Support Details Swann Technical Support All Countries E mail...

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