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13 volume request – FSR IT-AS411 Series User Manual

Page 17

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13 Volume Request

The Volume request is used to adjust input trims, program audio level and voice

level. It can be used to inquire about the current value of a program audio input trim,
program audio output level or voice level. The levels can be set as a value, or adjusted
up or down with “+” or “-“.

VOL

“L” | “T” number | “V”

value|”?”


Syntax: VOL <<”L”|”T” number | “V”> >
Where:
VOL

Volume request Header

“L” | “T”

output Level, Trim

number

values of “1” to “4”, applicable only when “T” designated

“V”

Voice

Level

value

volume value -5 to +15 for trims, -45 to +5 for level (in 1 dB increments), -45
to +5 for Voice level or “+” to increment volume in 1 dB increments, or “-“ to
decrement volume in 1 dB decrements. Multiple “+” or “-“ may be specified
consecutively, each representing 1 dB step.

“?”

inquiry for the specified level, trim or voice


Example:

VOL L -23<cr>

Instructs the IT-AS411 to set the program audio output level to -23.

VOL V -30

Instructs the IT-AS411 to set the voice level to -30.

VOL T 1 10

Instructs the IT-AS411 to set input 1’s Trim level to 10.

VOL L +++

Instructs the IT-AS411 to increment program output level +3dB.

Example Response:

ACK

This response means that the command has been received and is valid.


Error Example:

VOL T 2 40<cr>

Instructs the IT-AS411 to set input 2’s trim to “40” which is invalid.


Error Response:

ERR: VOL <<”L”|”T” number>

T

he IT-AS411 would send the error message above indicating that the “40” in the

message was invalid (trim values are from -5dB to +15dB).

VOLUME INQUIRY

If the user wishes to query a trim, program audio level or voice level, the user

would insert a “?” in place of the Value, an Inquiry would look like this: