SERVSWITCH™ BRAND MATRIX VIDEO SWITCH

4.3 Switching With (or Through) a Serial Device

To control the Matrix Video Switch through an attached PC or other serial device, the serial device has to be able to communicate with the Switch. (You’ll need to set the device to 1200 bps, 8 data bits, and no parity; the number of stop bits is irrelevant.)

Beyond that, the serial device needs to be able to mimic the Switch’s keypad commands. (See Section 4.2 for a description of the command syntax.) When you press a button on the keypad, a “make” code is sent to the Switch; when you release a button, a “break” code is sent to the Switch. (If a button is held down, “make” codes are sent repeatedly, but the Switch ignores all of them except the first one.) Here are the values you need to send to the Switch to get it to change channels, listed as both ASCII characters and hexadecimal values:

Keypad

Make Code,

Break Code,

Button

ASCII (hex)

ASCII (hex)

[1]

` (60)

@ (40)

[2]

a (61)

A (41)

[3]

b (62)

B (42)

[4]

c (63)

C (43)

[0]

o (6f)

O (4f)

[*]

k (6b)

K (4b)

[.]

n (6e)

N (4e)

[Enter]

t (74)

T (54)

The same rules that govern keypad switching apply here: Until the switching command is complete, each code must be followed by another within five seconds, or the command will be aborted and the Switch will reset itself. Any invalid or unexpected code will also cause the command to be aborted and the Switch to reset itself.

There is a special set of codes that can be sent by (or through) the serial device that will cause the Switch to respond with status values; these can be very useful in automated systems:

•Send the Switch an ASCII “0” (zero, 30 hex) to have it return the revision level of its firmware: an ASCII “1” (31 hex), for instance, for firmware version 1.

•Send the Switch an ASCII “1”, “2”, “3”, or “4” (31 hex through 34 hex respectively) to have it return the status of the corresponding output channel: It will reply with ASCII “1”, “2”, “3”, or “4” (31 hex through 34 hex) to indicate that that output is switched to input #1, 2, 3, or 4 respectively, or it will reply with ASCII “0” (zero, 30 hex) to indicate that that output is blanked.

14

Page 13 Page 15
Page 14
Image 14
Black Box ServSwitch Video Switch, ACL0404A manual Switching With or Through a Serial Device, Button
Page 13 Page 15

ACL0404A, ServSwitch Video Switch specifications

The Black Box ServSwitch Video Switch, model ACL0404A, is a versatile and sophisticated solution designed to meet the demands of video switching in various settings, including businesses, schools, and broadcast environments. This innovative device efficiently manages multiple video sources, allowing users to switch between them seamlessly while maintaining high-quality output.

One of the standout features of the ACL0404A is its ability to support multiple video formats, including VGA, SVGA, XGA, and even higher resolutions, making it ideal for diverse applications. The switch supports resolutions up to 1920 x 1200, ensuring compatibility with modern high-definition displays. This level of resolution is crucial for environments where precise visuals are necessary, such as presentations, training sessions, or video conferencing.

The ACL0404A boasts a 4x4 matrix switching capability, enabling users to connect and control up to four video sources and direct them to four different displays. This matrix functionality allows for any input to be routed to any output, providing unparalleled flexibility. Additionally, the device features an easy-to-use interface, which often includes front-panel selection buttons, remote control options, and advanced software for management.

Another significant aspect of the Black Box ServSwitch is its advanced signal processing technology. It ensures that video signals maintain their integrity throughout the switching process, minimizing any degradation in quality. This is essential for maintaining clear visuals and audio during crucial presentations or broadcasts. The switch also minimizes latency, ensuring that users experience real-time performance that is particularly important during live events.

For added convenience, the ACL0404A incorporates hot-swappable capabilities, allowing users to connect or disconnect sources without having to power down the entire system. This feature is particularly beneficial in fast-paced environments, such as control rooms or live event setups, where downtime can be detrimental.

In terms of build quality, the Black Box ServSwitch ACL0404A is engineered for durability and reliability. Its robust design is complemented by professional-grade connectors, ensuring long-term performance in demanding applications.

Overall, the Black Box ServSwitch Video Switch ACL0404A stands out for its combination of advanced features, user-friendly operation, and reliable performance. It is an excellent solution for anyone looking to enhance their video switching capabilities, making it a valuable asset in both professional and educational environments.
Top Page Image Contents