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Cisco TelePresence System Codec C40 Manual de usuario Pagina 16

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Cisco TelePresence System Codec C40 Physical interface guide
D14646.02 Codec C40 Physical Interface Guide TC4.0, November 2010.
© 2010 Cisco Systems, Inc. All rights reserved.
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Microphone Inputs 1 to 2
XLR female
Signal
levels
Clipping level Nominal
level
Level
setting
[dB] [mVpp] [dBu] [dBu]
0.0 275.0 -18 .0 -36.0
1.0 245.1 -19.0 -37.0
2.0 218.4 -20.0 -38.0
3.0 194.7 -21.0 -39.0
4.0 173.5 -22.0 -40.0
5.0 154.6 -23.0 -41.0
6.0 137. 8 -24.0 -42.0
7.0 122.8 -25.0 -43.0
8.0 109.5 -26.0 -44.0
9.0 97.6 -27.0 -45.0
10.0 87.0 -28.0 -46.0
11. 0 77.5 -29.0 - 47.0
12.0 69.1 -30.0 -48.0
13.0 61.6 -31.0 -49.0
14.0 54.9 -32.0 -50.0
15.0 48,9 -33.0 -51.0
16.0 43,6 -34.0 -52.0
17.0 38,8 -35.0 -53.0
18.0 34,6 -36.0 -54.0
19.0 30,9 -37.0 -55.0
20.0 27,5 -38.0 -56.0
21.0 24,5 -39.0 -57.0
22.0 21,8 -40.0 -58.0
23.0 19,5 -41.0 -59.0
24.0 17,4 -42.0 -60.0
Audio signal levels tables
This specification is valid for Mic 1–2 inputs if
Microphone Level setting is selected.
Line Inputs 1 to 4
Female RCA/phone
Signal
levels
Clipping level Nominal
level
Level
setting
[dB] [Vpp] [dBu] [dBu]
0.0 17.4 18.0 0.0
1.0 15.5 17.0 -1.0
2.0 13.8 16.0 -2.0
3.0 12.3 15.0 -3.0
4.0 11.0 14.0 -4.0
5.0 9.8 13.0 -5.0
6.0 8.7 12.0 -6.0
7.0 7.8 11.0 -7. 0
8.0 6.9 10.0 -8.0
9.0 6.2 9.0 -9.0
10.0 5.5 8.0 -10 .0
11. 0 4.9 7.0 -11. 0
12.0 4.4 6.0 -12.0
13.0 3.9 5.0 -13 .0
14.0 3.5 4.0 -14.0
15.0 3.1 3.0 -15.0
16.0 2.8 2.0 -16.0
17.0 2.5 1.0 -17.0
18.0 2,2 0.0 -18.0
19.0 2,0 -1.0 -19.0
20.0 1,7 -2.0 -20.0
21.0 1,6 -3.0 -21.0
22.0 1,4 -4.0 -22.0
23.0 1,2 -5.0 -23.0
24.0 1,1 -6.0 -24.0
Line outputs 1 to 2
Female RCA/phone
Signal
levels
Absolute max
output level
Nominal
level
Level
setting
[dB] [Vpp] [dBu] [dBu]
-24.0 1,1 -6.0 -24.0
-23.0 1,2 -5.0 -23.0
-22.0 1,4 -4.0 -22.0
-21.0 1,5 -3.0 -21.0
-20.0 1,7 -2.0 -20.0
-19.0 1,9 -1.0 -19.0
-18 .0 2,2 0.0 -18 .0
-17. 0 2.5 1.0 -17.0
-16 .0 2.8 2.0 -16.0
-15 .0 3.1 3.0 -15.0
-14.0 3.5 4.0 -14.0
-13 .0 3.9 5.0 -13.0
-12.0 4.4 6.0 -12.0
-11.0 4.9 7.0 -11. 0
-10. 0 5.5 8.0 -10 .0
-9.0 6.2 9.0 -9.0
-8.0 6.9 10.0 -8.0
-7. 0 7. 8 11. 0 -7.0
-6.0 8.7 12.0 -6.0
-5.0 9.8 13.0 -5.0
-4.0 11. 0 14.0 -4.0
-3.0 12.3 15.0 -3.0
-2.0 13.8 16.0 -2.0
-1.0 15.5 17.0 -1.0
0.0 17.4 18.0 0.0
Notes:
1. Default levels are marked with white text on black
For the dBu value for input clipping level and absolute max output level, a sine waveform is assumed
If numbers in dBV are required, dBV value is 2.2 dB lower than the dBu value.
Example: -10 dBu equals -12.2 dBV
Contents
Contact us
Introduction
The physical interface
Connecting to the codec
The physical interface
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