Extron electronic MTPX Plus Series Programmer’s Guide, cont’d, Command, ASCII command, Response

Programmer’s Guide, cont’d

Command/response table for SIS commands (continued)

Command	ASCII command	Response	Additional
	(host to switcher)	(switcher to host)	description

Audio output volume

NThe table below defines the value of each audio volume step.

		value	dB of	Output		value	dB of	Output			value	dB of	Output
	X16				X16					X16
			attenuation	volume			attenuation	volume				attenuation	volume
00			76	0%
01			63	5.5%	23		41	38.5%	45			19	71.5%
02			62	7%	24		40	40%	46			18	73%
03			61	8.5%	25		39	41.5%	47			17	74.5%
04			60	10%	26		38	43%	48			16	76%
05			59	11.5%	27		37	44.5%	49			15	77.5%
06			58	13%	28		36	46%	50			14	79%
07			57	14.5%	29		35	47.5%	51			13	80.5%
08			56	16%	30		34	49%	52			12	82%
09			55	17.5%	31		33	50.5%	53			11	83.5%
10			54	19%	32		32	52%	54			10	85%
11			53	20.5%	33		31	53.5%	55			9	86.5%
12			52	22%	34		30	55%	56			8	88%
13			51	23.5%	35		29	56.5%	57			7	89.5%
14			50	25%	36		28	58%	58			6	91%
15			49	26.5%	37		27	59.5%	59			5	92.5%
16			48	28%	38		26	61%	60			4	94%
17			47	29.5%	39		25	62.5%	61			3	95.5%
18			46	31%	40		24	64%	62			2	97%
19			45	32.5%	41		23	65.5%	63			1	98.5%
20			44	34%	42		22	67%	64			0	100%
21			43	35.5%	43		21	68.5%
22			42	37%	44		20	70%

Set the audio volume to a	X1%*X1^V	OutX1%•VolX1^]
specific value
Example:	1*50v	Out01•Vol50]	Set output 1 volume to 79%.
Increment volume	X1%+V	OutX1%•VolX1^]	Increment volume by 1 step.
Example:	1+V	Out01•Vol51]
Decrement volume	X1%-V	OutX1%•VolX1^]	Decrease volume by 1 step.
Read output volume	X1%V	X1^]

N X1%= Local audio output number	1	– 4	(matrix sizes 1616 and smaller)
X1^= Volume adjustment range	1	– 8	(matrix sizes 1632 and larger)
	0	– 64 (1 dB/step except for 0-to-1, which is 22 dB)

4-14 MTPX Plus Twisted Pair Matrix Switchers • Programmer’s Guide