Command Control via the Network

Automatic Connection Break

The TCP connection will be automatically disconnected after there is no communi- cation for 30 seconds after being established.

Authentication

The projector does not accept commands without authentication success when authentication is enabled. The projector uses a challenge response type authenti- cation with an MD5 (Message Digest 5) algorithm.

When the projector is using a LAN, a random eight bytes will be returned if au- thentication is enabled. Bind this received 8 bytes and the authentication pass- word and digest this data with the MD5 algorithm and add this in front of the com- mands to send.

Following is a sample if the authentication password is set to “password” and the random eight bytes are “a572f60c”.

1)Select the projector.

2)Receive the random eight bytes “a572f60c” from the projector.

3)Bind the random eight bytes “a572f60c” and the authentication password “password” and it becomes “a572f60cpassword”.

4)Digest this bind “a572f60cpassword” with MD5 algorithm. It will be “e3d97429adffa11bce1f7275813d4bde”.

5)Add this “e3d97429adffa11bce1f7275813d4bde” in front of the commands and send the data.

Send “e3d97429adffa11bce1f7275813d4bde”+command.

6)When the sending data is correct, the command will be performed and the reply data will be returned. Otherwise, an authentication error will be returned.

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ViewSonic PJ1158 manual Automatic Connection Break, Authentication
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PJ1158 specifications

The ViewSonic PJ1158 is a versatile and powerful projector designed to meet the demands of both business and educational environments. Known for its impressive performance and user-friendly features, the PJ1158 stands out as a reliable tool for presentations, lectures, and multimedia presentations.

One of the main features of the PJ1158 is its high brightness capability. With a brightness level of up to 4,000 ANSI lumens, this projector ensures clear and vibrant images even in well-lit rooms. This is crucial for environments where ambient light cannot be completely controlled, making the PJ1158 an excellent choice for conference rooms, classrooms, and auditoriums.

The resolution of the ViewSonic PJ1158 is another highlight, as it supports native XGA (1024x768) resolution. This level of clarity allows for detailed images and text, ensuring that audiences can easily read and comprehend the information presented. Additionally, the PJ1158 supports various resolutions, including up to 1080p, making it compatible with a wide range of video sources and formats.

In terms of connectivity, the PJ1158 offers a comprehensive selection of ports to accommodate various devices. It includes HDMI, VGA, and composite inputs, making it versatile for connecting laptops, DVD players, and other multimedia devices. The inclusion of USB ports also allows for easy plug-and-play functionality, enabling users to present directly from USB drives with minimal setup time.

The PJ1158 utilizes advanced DLP technology, which enhances image quality by providing sharpness, saturation, and contrast. The DLP chip ensures that images are smooth and free from the pixelation that can occur with other projector types. Furthermore, the PJ1158 is equipped with a long-lasting lamp life of up to 15,000 hours, significantly reducing maintenance costs and downtime.

For ease of use, the PJ1158 features a remote control and an intuitive interface, allowing users to navigate menus quickly and adjust settings effortlessly. The integrated 10-watt speaker provides adequate sound output for smaller venues, eliminating the need for external audio systems in many cases.

Overall, the ViewSonic PJ1158 excels in providing a combination of high brightness, resolution, versatile connectivity, and robust build quality. These features make it a solid choice for professionals and educators looking for an efficient and dependable projector for their presentations.
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