Error codes warn that an invalid channel number has been entered, or the unit has been turned off and can't receive commands, etc.Īs you can imagine, these responses can considerably reduce the time required to set up and troubleshoot a video system. If there is a problem, an error code will be returned. Notice that this response is easy to interpret. This way it is easy to confirm that a tie has actually been made. If a command is sent to an Extron Matrix to tie video input 1 to output 3, the matrix switcher will respond with 'OUT3 IN1 VID' indicating there is now a video tie between input 1 and output 3. For instance, sending the 'I' command results in a status message being returned, as was mentioned earlier. The response will be either a status message, a command completed message, or an error code. Responses Providedįinally, the Simple Instruction Set will provide a response to each command issued. The only exception is the Matrix 100/200 which do not use the Simple Instruction Set. In other words, on virtually all Extron Matrix switchers. The same command also works as a tie command on the Matrix 50, the CrossPoint 84, and the MAV 62. Once a few basic characters have been memorized they can be used to control a variety of Extron products, from the Lancia line doubler to the CrossPoint Matrix.įor instance, on the CrossPoint 128 matrix the command 1*2 is used to tie input 1 to output 2.

The Extron Simple Instruction Set is not only easy to learn, it is also universal. It's Universal: One Instruction Set for Many Products All that is needed is one of the readily available RS-232 terminal programs, such as Hyper Terminal, which is included with Windows 95. Likewise, just the greater than sign '<' will power on a switcher or a display device. For instance, to obtain information on a product's current status just the character 'I' needs to be sent.

The first thing that makes the Simple Instruction Set easy to use is it consists entirely of characters which can be generated straight from a PC keyboard. Three main factors make the Simple Instruction Set superior for RS-232 remote control: characters can be generated directly from the keyboard, the same instruction works with many products, and it provides informative responses to each command sent. The idea behind the Simple Instruction Set was to create a limited set of commands that would be easy to remember, easy to use, and would work with a wide variety of Extron products.

Over the past few years Extron has included the Simple Instruction Set™ with its new products. However, RS-232 remote control is no longer so complicated. This reflects past experience with the complicated methods that manufacturers use to control their products. When RS-232 remote control is mentioned, especially in relation to remote control of video systems, thoughts of obscure long code strings and painful debugging sessions often come to mind.

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