Extron Electronics MTPX Series User Guide - Manual (Page 60)

Operation, cont’d
MTPX Twisted Pair Matrix Switchers • Operation 3-34
PRELIMINAR
Y
Input LED dB of
attenuation
Output
volume
76 0%
8 7 6 5 4 3 2 1
1
12 11 10 9 16 15 14 13
8 7 6 5 4 3 2 12 11 10 9 16 15 14 13
60
56
10%
5.5%
7%
8.5%
16%
63
62
61
52 22%
17.5%
19%
20.5%
55
54
53
11.5%
13%
14.5%
59
58
57
48 28%
23.5%
25%
26.5%
51
50
49
44 34%
29.5%
31%
32.5%
47
46
45
36 46%
41.5%
43%
44.5%
39
38
37
28 58%
53.5%
55%
56.5%
31
30
29
20 70%
65.5%
67%
68.5%
23
22
21
12 82%
77.5%
79%
80.5%
15
14
13
4 94%
89.5%
91%
92.5%
7
6
5
40 40%
35.5%
37%
38.5%
43
42
41
32 52%
47.5%
49%
50.5%
35
34
33
24 64%
59.5%
61%
62.5%
27
26
25
16 76%
71.5%
73%
74.5%
19
18
17
8 88%
83.5%
85%
86.5%
11
10
9
0 100%
95.5%
97%
98.5%
3
2
1
= on, = blinking, = off
Audio output volume settings, 16 button switcher • Successive steps of volume increase
cause consecutive LEDs to first blink,
then light steadily. (On switchers with
32 input buttons, each consecutive LED
indicates a 1 dB attenuation reduction
when blinking and a 2 dB attenuation
reduction when lit.)
For example : When lit steadily, the
Input 3 LED indicates the following,
depending on the number of input
buttons the switcher has:

Switchers with 16 input buttons —
52 dB of attenuation when compared
to the Input 3 LED blinking (53 dB to
55 dB of attenuation). The blinking
Input 4 LED (49 dB to 51 dB of
attenuation) is at least 2 dB less
than the blinking Input 3 LED
(53 dB minus 51 dB) and at most 6 dB
less (55 dB minus 49 dB).

Switchers with 32 input buttons —
58 dB of attenuation when compared
to the Input 3 button blinking (59 dB
of attenuation). The blinking Input 4
LED (57 dB of attenuation) is 3 dB
less than the steadily-lit Input 2 LED
(60 dB minus 57 dB).
• On switchers with 32 input buttons, the
buttons’ volume indications are additive.
For example : Input 1 lit (23 dB
[22 dB + 1 dB] of attenuation reduction),
Input 2 lit (2 dB [1 dB + 1 dB] of
attenuation reduction ), and Input 3
blinking (1 dB of attenuation reduction)
indicate that the output attenuation
has been reduced by a total of 25 dB
(22 dB + 2 dB + 1 dB = 25 dB).
• At full volume, no attenuation is applied
to the output and all input buttons are lit
steadily.
See the tables at left and on the next page to
read the volume display.