Extron electronics MTPX Plus Series User Manual page 108

Programmer's Guide, cont'd
Command/response table for SIS commands (continued)
Command
Audio output volume
N The table below defines the value of each audio volume step.
dB of
value
X16
attenuation
00 76
01 63
02 62
03 61
04 60
05 59
06 58
07 57
08 56
09 55
10 54
11 53
12 52
13
51
14 50
15 49
16 48
17
47
18 46
19 45
20 44
21
43
22 42
Set the audio volume to a
specific value
Example:
Increment volume
Example:
Decrement volume
Read output volume
X1%
N = Local audio output number
X1^
= Volume adjustment range
4-14 MTPX Plus Twisted Pair Matrix Switchers • Programmer's Guide
ASCII command
(host to switcher)
Output dB of
value
X16
volume attenuation
0%
5.5% 23 41
7% 24 40
8.5% 25 39
10% 26 38
11.5% 27 37
13% 28 36
14.5% 29 35
16% 30 34
31 33
17.5%
19% 32 32
20.5% 33 31
22% 34 30
35 29
23.5%
25% 36 28
26.5% 37 27
28% 38 26
39
29.5% 25
31% 40 24
32.5% 41 23
34% 42 22
43
35.5% 21
37% 44 20
X1% X1^
* V
1*50v
X1%
+V
1+V
X1%
-V
X1%
V
1 – 4 (matrix sizes 1616 and smaller)
1 – 8 (matrix sizes 1632 and larger)
0 – 64 (1 dB/step except for 0-to-1, which is 22 dB)
Response Additional
description
(switcher to host)
Output
value
X16
volume
38.5% 45
40% 46
41.5% 47
43% 48
44.5% 49
46% 50
47.5% 51
49% 52
50.5% 53
52% 54
53.5% 55
55% 56
57
56.5%
58% 58
59.5% 59
61% 60
61
62.5%
64% 62
65.5% 63
67% 64
68.5%
70%
X1% X1^]
Out •Vol
]
Set output 1 volume to 79%.
Out01•Vol50
X1% X1^]
Increment volume by 1 step.
Out •Vol
]
Out01•Vol51
X1% X1^]
Decrease volume by 1 step.
Out •Vol
X1^]
dB of Output
attenuation volume
19 71.5%
18 73%
17 74.5%
16 76%
15
77.5%
14 79%
13 80.5%
12 82%
11
83.5%
10 85%
9 86.5%
8 88%
7 89.5%
6 91%
5 92.5%
4 94%
3 95.5%
2 97%
1 98.5%
0 100%