Grandstream Networks GXV3601 Istruzioni per il montaggio

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Grandstream Networks, Inc. Page 1 of 3

Firmware 1.0.4.34 or 1.0.1.60 Last Updated: 05/2012

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GXV3601/GXV3601_LL/GXV3601_HD/GXV3651FHD

Focus Tuning Tips

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Grandstream GXV3601/GXV3601_LL/GXV3601_HD/GXV3651FHD cameras shipped with

lens and camera body unassembled, user has to install and tune the focus of lens by self.

To get best image quality, minimum illuminate has to be reached.

Following are some tips helping customers to ease this focus process. GXV3601 model equipped

with Auto Iris, therefore that part can be skipped if having GXV3601 model.

The lens above is for illustration. Actual shipped lens might look differently but similar.

All the adjust steps based on user facing the lens of fully assembled camera.

The LENS

The lens shipped is an adjustable focus lens. It will meet the requirement of most common usage.

If customer has special requirement, related CS mount lens has to be purchased.

Please consult local lens specialist, or contact your reseller or Grandstream if you are not sure

what kind of 3

party lens should be used.

Refer to below picture, for GXV3601/GXV3601_LL/GXV3601HD, if customer using 3

party

CS mount lens, the camera has a plastic ring (highlighted in BLUE in below picture) inside the

front metal frame, used for fine tuning the focus. Customer should be VERY gentle to adjust this

ring. Once clear image achieved, customer should use a small screw driver to tighten the screw

inside the “LOCK” hole (marked in RED in below picture) on the left side (facing camera) of

the camera to lock this ring.

For GXV3615FHD, a small metal ring is provided for the same purpose.

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Grandstream Networks, Inc. Page 2 of 3

Firmware 1.0.4.34 or 1.0.1.60 Last Updated: 05/2012

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For GXV3601_LL/GXV3601_HD/GXV3651FHD, the shipped lens has three movable parts:

Outer Ring (Near/Far or Zoom In/Zoom Out), Middle Ring (Manual Iris, or Aperture), Inner

Ring (Tele/Wide, or Zoom In/Zoom Out).

Preparation:

Before tuning the focus, please make sure the camera has the latest firmware, it can be

found in Grandstream website:

http://www.grandstream.com/support/firmware

Power on and log into the camera using IE or Firefox browser. Once in HOME screen,

double click the video image to make Full Screen to facilitate the tuning process.

Manual Iris or Aperture

Depending on the monitored objects, correct aperture is important to get clear image. Similar to

all cameras, aperture controls the “depth of filed” and is key to get a desired clear image.

The Middle Ring is the Manual Iris or Aperture adjustment. Facing the lens of camera, adjust

counterclockwise (or toward OPEN arrow) allowing more light coming to camera or using large

aperture (meaning less depth of field, good for monitor closer objects); adjust clockwise (or

toward CLOSE arrow) reducing the light coming to camera or using small aperture (meaning

more depth of filed, good for far away objects).

User is recommended to adjust the Aperture Ring in the middle position (50% ~ 80%) to start the focus

tuning process. Suggest user using fingers of one hand to hold both Inner and Outer Rings while using

another hand to adjust the Middle Ring.

Depending on the scene, once Aperture ring tuned, suggest user to adjust the Outer Ring first. Facing the

lens, adjust clockwise is zooming in the object, adjust counterclockwise is zooming out the object, adjust to

get a rough image first.

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Grandstream Networks, Inc. Page 3 of 3

Firmware 1.0.4.34 or 1.0.1.60 Last Updated: 05/2012

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Once the rough image showed, switch to Inner Ring to fine tune the focus. Same as Outer Ring, facing the

lens, adjust clockwise is zooming in the object, adjust counterclockwise is zooming out the object, slowly

adjust the rings to focus the object to have a clear image.

If either Outer Ring or Inner Ring reached to limit (not movable) but the image still blur, user has to reverse

the move direction of either Outer or Inner ring, then adjust again the other ring (Inner or Outer Ring) to get

a clear image.

Once satisfied image reached, user has to tighten the mini screws on lens to prevent the losing focus. Be

very gentle when tightening the screws. If image blurred again, slightly tuning it and tighten again.

Here are steps of tuning:

1. Adjust Iris Ring or Aperture (Middle Ring)

Move Middle Ring toward Open or Counterclock wise, till 50% to 80% Open.

GXV3601 has Auto-Iris Lens therefore this step will be omitted.

2. Adjust Object Far and Near (Outer Ring)

Move Outer Ring, toward “NEAR” arrow or clockwise is zooming in, toward “FAR”

arrow or counterclockwise is zooming out, adjust to a rough image appeared.

3. Adjust Focus (Inner Ring)

Slowly adjust the Inner Ring, same as Step 2, till a clear image appeared.

4. If necessary, repeat Step 1 ~ 3 to get satisfied image.

5. Gently tight the screws of both Outer and Inner Rings.

Thank you for using Grandstream products.

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