Cisco TelePresence System Codec 3000 MXP Il manuale dell'interfaccia fisica - Pagina 10
Sfoglia online o scarica il pdf Il manuale dell'interfaccia fisica per Sistema di conferenze Cisco TelePresence System Codec 3000 MXP. Cisco TelePresence System Codec 3000 MXP 28.
Stampa la pagina
MXP Series Codecs
Contents
Audio Signal Levels in Vpp and dBu
Microphone Inputs 1, 2 & 3
Signal levels
Signal
Clipping levels
levels
Input
menu
level
setting
[dB]
[mVpp]
[dBu]
0.0
83.0
–28.4
–46.4
1.5
69.8
–29.9
3.0
58.8
–31.4
–49.4
4.5
49.4
–32.9
–50.9
6.0
41.6
–34.4
–52.4
7.5
35.0
–35.9
–53.9
9.0
29.4
–37.4
–55.4
10.5
24.8
–38.9
–56.9
12.0
20.8
–40.4
–58.4
13.5
17.5
–41.9
–59.9
15.0
14.8
–43.4
–61.4
16.5
12.4
–44.9
–62.9
18.0
10.4
–46.4
–64.4
19.5
8.8
–47.9
–65.9
21.0
7.4
–49.4
22.5
6.2
–50.9
–68.9
This specification is always valid for mic 1 and
2, and for mic 3 if mic level setting is selected.
Audio inputs 4–6
Microphone
Audio outputs 1–3
inputs 1–3
D14790.01 MXP Series Codec Physical Interface Guide, May 2011.
© 2011 Cisco Systems, Inc. All rights reserved.
Introduction
Microphone Input 3
Line level mode signal levels
Signal
Clipping levels
Nominal
level
levels
Input
menu
level
setting
[dBu]
[dB]
[Vpp]
[dBu]
0.0
15.5
17.0
–47.9
1.5
13.0
15.5
3.0
11.0
14.0
4.5
9.2
12.5
6.0
7.8
11.0
7.5
6.5
9.5
9.0
5.5
8.0
10.5
4.6
6.5
12.0
3.9
5.0
13.5
3.3
3.5
15.0
2.8
2.0
16.5
2.3
0.5
18.0
2.0
–1.0
19.5
1.6
–2.5
–67.4
21.0
1.4
–4.0
22.5
1.2
–5.5
This specification is valid for mic 3 if line level
setting is selected.
NOTE:
Audio inputs 4–6 are referred to as
Line input 1–3 in the API.
Codec 6000 MXP
Codec 6000 MXP
Audio Inputs 4, 5 & 6
Signal levels
Nominal
Signal
Clipping levels
level
levels
Input
menu
level
setting
[dBu]
[dB]
[Vpp]
[dBu]
–1.0
0.0
15.5
17.0
–2.5
1.5
13.0
15.5
–4.0
3.0
11.0
14.0
–5.5
4.5
9.2
12.5
–7.0
6.0
7.8
11.0
–8.5
7.5
6.5
9.5
9.0
5.5
8.0
–10.0
–11.5
10.5
4.6
6.5
–13.0
12.0
3.9
5.0
–14.5
13.5
3.3
3.5
–16.0
15.0
2.8
2.0
16.5
2.3
0.5
–17.5
18.0
2.0
-1.0
–19.0
19.5
1.6
-2.5
–20.5
21.0
1.4
-4.0
–22.0
–23.5
22.5
1.2
-5.5
Default levels are denoted as follows:
10
Physical interface guide
Codec 3000 MXP
Audio Outputs 1, 2 & 3
Signal levels
Nominal
Signal
Absolute max output
level
levels
level
Input
menu
level
setting
[dBu]
[dB]
[Vpp]
–1.0
0.0
1.2
–2.5
1.5
1.4
–4.0
3.0
1.6
–5.5
4.5
1.9
–7.0
6.0
2.3
–8.5
7.5
2.8
–10.0
9.0
3.3
10.5
3.9
–11.5
12.0
4.6
–13.0
13.5
5.5
–14.5
–16.0
15.0
6.5
–17.5
16.5
7.8
–19.0
18.0
9.2
–20.5
19.5
11.0
–22.0
21.0
13.0
–23.5
22.5
15.5
This specification is always valid for output 2
and 3, and for output 1 at volume setting 15.
–31.4
TIP:
To convert dBu values to dBV,
subtract 2.2 dB from the dBu value.
EXAMPLE:
–10 dBu –12.2 dBV
NOTE:
The input clipping levels and the
absolute max output levels all assume
sinusoidal signals for the dBu values.
Contact us
Nominal
level
[dBu]
[dBu]
–5.5
–23.5
–4.0
–22.0
–2.5
–20.5
–1.0
–19.0
0.5
–17.5
2.0
–16.0
3.5
–14.5
5.0
–13.0
6.5
–11.5
8.0
–10.0
9.5
–8.5
11.0
–7.0
12.5
–5.5
14.0
–4.0
15.5
–2.5
17.0
–1.0
www.cisco.com