Extron electronics VoiceLift Operations Instructions download pdf (Page 34)

VoiceLift

™

Microphone • SIS Conguration and Control

3-2

SIS

™

Conguration and Control

PRELIMINARY

The VoiceLift VLR 102 receiver can be controlled via a host computer that is

connected to the receiver’s RS-232 control port. You can issue Extron’s Simple

Instruction Set (SIS

™

) commands using the computer’s RS-232 interface with a

communication software program such as HyperTerminal or Extron’s DataViewer.

SIS commands are available for you to do the following:

• Upload rmware

• Obtain information and status for VoiceLift ports and system components

• Adjust the volume for a speciﬁc channel

Protocol for the VoiceLift receiver’s RS-232 port is:

• 38400 baud

• 8 data bits

• 1 stop bit

• no parity

• no ow control

Host-to-Receiver Communications

SIS commands consist of one or more characters per ﬁeld. No special characters

are required to begin or end a command sequence. When the VLR 102 determines

that a command is valid, it executes the command and sends a response to the host

device. All responses from the receiver to the host end 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.

Receiver-initiated messages

When a local event such as a volume adjustment takes place, the VLR 102 responds

by sending a message to the host. No response is required from the host. The

receiver-initiated messages are listed below (underlined).

Chn

X22*

*Aud=

The receiver sends this message when the volume level is changed.

]

Chn

X22*

*Aud=

Vx.xx is the rmware version number.

The receiver sends the copyright and audio level messages when power is cycled to

the receiver.

Additional messages may be sent by the VLR 102 in response to changes in the

contact closure input state, relay state, or microphone channel selection.

Error response

When the VLR 102 receives a valid SIS command, it executes the command

and sends a response to the host device. If the receiver is unable to execute the

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

returns the following error response to the host:

E13 – Invalid value (the number is out of range/too large)

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 63 64

Comments to this Manuals

No comments

Extron electronics VoiceLift Operations Instructions Page 34

Comments to this Manuals

Related products and manuals for Microphones Extron electronics VoiceLift