Extron-electronics ISM 482 User Manual download pdf (Page 43)

ISM 482 Integrated Scaling Matrix Switcher • Programming Guide 37

Host-to-Switcher Instructions

The switcher accepts SIS commands through its RS-232 port and/or its Ethernet port. SIS

commands consist of one or more characters per command field. They do not require

any special characters to begin or end the command character sequence. Each switcher

response to an SIS command ends with a carriage return and a line feed (CR/LF =

]

which signals the end of the response character string. A string is one or more characters.

Switcher Error Responses

When the switcher receives an SIS command and determines that it is valid, it performs the

command and sends a response to the host device. If the switcher is unable to perform

the command because the command is invalid or contains invalid parameters, the switcher

returns an error response to the host. The error response codes are:

E01 — Invalid input channel number (too large)

E10 — Invalid command

E11 — Invalid preset number (zero or too large)

E12 — Invalid output number (zero or too large)

E13 — Invalid value (out of range)

Using the Command and Response Table

The command/response table begins on the next page. Except for the gain and attenuation

settings and the filter settings, upper or lower case letters are acceptable in the command

field. The table below shows the hexadecimal equivalent of each ASCII command.

NOTE: With the exception of the audio gain and attenuation (G and g) and horizontal

and vertical filtering (D and d) commands, the SIS commands are not case sensitive.

ASCII to Hex Conversion Table

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Extron-electronics ISM 482 User Manual Page 43