Extron electronic SW6 specifications RS-232 Command/Response Table, Audio Level

RS-232 Command/Response Table

RS-232 COMMAND/RESPONSE TABLE	ASCII to HEX Conversion Table
ABBREVIATIONS & DEFINITIONS:
= CR/LF, · = SPACE, A = AUDIO, AUTO = AUTOSWITCH,		•
C = CHANNEL-AUDIO& VIDEO, F = MODE, V = VIDEO,
M = MAXIMUM INPUTS, QVER = SOFTWARE VERSION
X1 = Ø – 6 (INPUT Ø = MUTED OUTPUT)
X2 = SOFTWARE VERSION X.XX
X3 = NUMERICAL VALUE –15TO +9
X4 = Ø TO 15 (16 STEPS + OR –)
X5 = MODE - 1 = FRONT PANEL, 2 = AUTO
X6 = 6 (TOTAL # OF INPUTS)
	COMMAND	RESPONSE
Command Description	ASCII	to Host
Select input channel X1 Audio only	X1 $	A X1
Example: Select Input channel #2 audio	2$	A2
Select input channel X1 Video only	X1 &	V X1
Example: Select Input channel #5 video	5&	V5
Select input channel X1 Audio and Video	X1 !	C X1
Example: Select Input channel #6 A & V	6!	C6
Set channel X1 positive audio gain to X4	X1 * X4 G	IN X1 ·AUD= X3
Example: Set Input 2 Audio Gain = +7	2*7G	IN2·AUD=+7
Set channel X1 attenuation to X4	X1 * X4 g	IN X1 ·AUD= X3
Example: Set Input 3 Audio Gain = –13	3*13g	IN3·AUD=–13
Set Front Panel Mode	#1	F1
Set Auto-Switch Mode #2	F2
Information request	i	(Same as I below)
Information request	I	V X1 ·A X1·F X5 ·QVER X2 ·M X6
Example:	I	V3·A3·F1·QVER1.23·M6
Request for part number	n	(Same as N below)
Request for part number	N	N6Ø-26Ø-Ø1
Query Software Version	q	(Same as Q below)
Query Software Version	Q	QVER X2
Example:	Q	QVER1.23
Explanation: Software version is 1.23 (example only)
View input channel X1 Audio Gain	v X1 G	(Same as V below)
View input channel X1 Audio Gain	V X1 G	IN X1 ·AUD= X3
Example:	V3G	IN3·AUD=–13
Explanation: Input 3 Audio Gain = –13

Error Response Codes

Invalid input channel (out of range)	EØ1
Invalid input channel change (Autoswitch mode active)	EØ6
Invalid mode parameter	EØ9
Invalid command received by SW6 VGA Audio	E1Ø
Invalid value (out of range)	E13

SW6 VGA Audio Switcher-Initiated Messages

When a local event takes place, such as a front panel operation, the SW6 VGA Audio switcher responds by sending a message to the Host. The switcher initiated messages are listed below (underlined).

(C) COPYRIGHT 1998, EXTRON ELECTRONICS SW6 VGA AUDIO, Vx.xx

C1	The copyright message is initiated by the switcher when it is first powered ON. Vx.xx is the
	software version number. This is followed by C1 identifying the current selected input = 1
	(power-up default is input #1).
Cx	This message is sent to the Host if the input is changed using the front panel. (x = new input #)
RECONFIG	This message is sent to the Host when there is a change in the audio level setting.

The switcher does not expect a response from the Host to any of the above switcher-initiated messages.

Audio Level

Audio Level Control

The Audio Level Setting (Gain) for each input can be viewed, changed and saved in memory using the switcher front panel buttons or with RS-232 commands. The setting range is –15 dB to +9 dB. To view or change the Audio level using the

front panel buttons, the Switcher AUDIO LED must be blinking. This is controlled by the AUDIO button. To view or change the audio setting, first select the desired input, then press and hold the AUDIO button until the AUDIO LED (above the AUDIO button) begins blinking. The current memory Audio Level Setting for the selected input will be displayed in the input select LEDs (1-5). Each LED can display four possible values as shown below.

The sum of the values represented by the five LEDs is the Audio Level setting for the selected input. The +dB and/or the –dB LED will be ON to indicate the polarity of the Audio Level setting. Both LEDs ON indicates a setting of zero (0). Examples using the LED symbols shown above follow:

In Example 1 above, the AUDIO LED is blinking indicating that LEDs 1-5 represent the audio level setting for the selected input. Input 1-5 LEDs are ON, each has a value of 3. The –dB LED is ON indicating a negative setting. The Audio level setting for the selected input is –15 dB (5 x 3 = 15).

In Example 2 above, the AUDIO LED is blinking indicating that LEDs 1-5 represent the audio setting for the selected input. Input 1 LED is solid ON, value = 3. Input 2 LED is blinking fast, value = 2. Total Value is 3 + 2 = 5. The +dB LED is ON indicating a positive setting. The Audio level setting is +5 dB for the selected input.

Input buttons 5 and 6 may be used to increase or decrease the current audio level setting. To change the setting for the last example from +5 dB to –1 dB, with the AUDIO LED still blinking, press and release the Input 6 (decrease) button six times. Each time the button is pressed and released, the LEDs change as follows:

The displayed setting in the example above has changed to –1 dB. However, the stored setting in memory will remain at +5 dB until the new setting is saved. Press and hold the AUDIO button to save the current displayed setting in memory. Release the AUDIO button when the AUDIO LED goes OFF. The audio level setting can also be loaded using RS-232 commands. See “RS-232 Command/Response Table” on page 3 for details.

Audio Level Reset

To reset the audio level to 0 dB for all inputs, press and hold the AUDIO button. The AUDIO LED will begin to blink. Continue to hold the AUDIO button in (approximately 10 seconds) until the AUDIO LED goes OFF. All input audio levels will be set to 0 dB.

3 SW6 VGA Audio • RS-232 Command Response Table SW6 VGA Audio • Audio Level 4