Network Security Features - Sony SNC-Z20N Specifications

High Frame Rate
The SNC-Z20N produces images with a
maximum frame rate of 30 fps while the SNC-
Z20P offers a maximum 25 fps, allowing for clear
and smooth frame-accurate images to be
viewed. The frame rate can be set to a fixed or
variable frame rate, which is automatically
adjusted according to the available bandwidth.

Network Security Features

IP Filtering
Using the IP-filtering feature, access to the SNC-Z20
can be restricted to one or more groups of selected
users. Up to ten different groups can be established
by defining an IP-address range for each group.
Setting these groups restricts access to the camera to
the defined IP-address range, while denying access to
all other addresses.
Password Protection
User names and passwords can be assigned to allow
four levels of access. The administrator has complete
access/control of the camera, while the other three
levels can be set to limit user privileges to functions
such as zoom control, viewing, trigger control, etc.
High Picture Quality and High Zoom
Ratio
The SNC-Z20 incorporates a 1/4 type CCD with
Exwave HAD technology that produces high-
resolution images with excellent sensitivity. The
SNC-Z20N achieves a horizontal resolution of
470 TV lines, while the SNC-Z20P offers 460 TV
lines. Its built-in auto-focus 18x optical zoom
lens enables the user to obtain clear images over
long distances. A maximum 216x zoom ratio is
available when the optical zoom and 12x digital
zoom are used together. To cover a wide angle
of view, an optional VCL-0637H 0.6x Wide
Conversion Lens can be attached.
Selectable Image Quality and
Size/Image Flip Function
The SNC-Z20 provides the flexibility to select
image quality and image size according to
network bandwidth. Employing the industry-
standard JPEG-compression format, the SNC-Z20
has a selectable compression ratios between 1/5
and 1/60. Also, the image size can be selected
from four modes: 736 x 480*, 640 x 480, 320 x
240, and 160 x 120. Images from the camera
can be electronically inverted including the
analog video output - allowing the camera to be
installed in a variety of locations and positions.
* The image size for the SNC-Z20N is 736 x 480 while the
image size for the SNC-Z20P is 736 x 544.
Day/Night Function and Slow Shutter
The SNC-Z20 offers a Day/Night function to
provide optimized sensitivity in both day and
night shooting scenarios. As the scene
illumination reduces and the image darkens, the
infrared cut filter is automatically removed and
the camera switches to B/W mode, achieving a
minimum illumination of 0.01 lx (F1.4, 50 IRE,
Slow shutter OFF) - a drastic improvement from
0.7 lx minimum illumination in color mode. In
addition, the slow shutter mode provides a
remarkable enhancement in sensitivity by
allowing the charge accumulation period of the
CCD to be extended to a maximum of one
second.
Backlight Compensation (BLC)
The Backlight Compensation (BLC) function
helps to overcome strong backlighting effects,
which often cause the subject of the image to
be cast into shadows. The image brightness can
be set to adjust automatically to compensate for
adverse lighting conditions.