Sony SNC DF40N Security Camera Review
Here we have the Sony SNC DF40N security camera, it is compatible with both PAL and NTSC video signals and uses both JPEG and NTSC video compression. The Sony security camera is designed for use on computer networks and it is capable of capturing sharp images at a smooth frame rate. If your premises have a PC you can easily set the device up to act as a monitoring station for the Sony Security camera, A mid range specification PC will suffice.
The security camera can capture images at a rate of 30 frames per second and you can select one of six image quality modes, you can set the pixel range to a maximum of 640*480 and a minimum of 160*120. To monitor the camera your PC needs to be connected to the Internet, through its web browser window you can view the camera feed with either a Java or Active X viewer.
As both Java and Active X viewers are supported the camera feed can be monitored through the Firefox web browser or through Internet Explorer. The Active X viewer does have the advantage when it comes to the smoothness of the camera feed as it supports MPEG-4 compression. From the viewer you can send image files to colleagues, adjust the cameras zoom and control a multitude of its other functions.
A 32 bit RISC processor is built into the camera and it has 64 megabytes of memory and 32 megabytes of flash RAM. The camera has ¼ inch inter line transfer super HAD CCD image sensor and it has a horizontal resolution of 480 TV lines. You can also hear the activities of subjects in the vicinity of the camera as it has a built in microphone, the camera uses G.711/G.726 audio compression.
The camera has white balancing and it is capable of capturing images in low level lighting, its alarm relay output can be used to attach it to an external alarm. The alarm rely feature is very useful for alerting you when the camera detects motion, there is also a pre alarm buffer built in so you can view occurrences that lead up to an event before an alarm is activated.
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