User guide

19
Cisco TelePresence System Codec C90 Physical interface guide
D14644.03 Codec C90 Physical Interface Guide TC4.1, February 2011.
© 2010-2011 Cisco Systems, Inc. All rights reserved.
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Notes:
1. Default levels are marked with white text on black
2. For the dBu value for input clipping level and absolute max output level, a sine waveform is assumed
3. If numbers in dBV are required, dBV value is 2.2 dB lower than the dBu value.
Example: -10 dBu equals -12.2 dBV
LineInputs1to8
XLRfemale
Signal
levels
Clipping level Nominal
level
Level
setting
[dB] [Vpp] [dBu] [dBu]
0.0 34.7 24.0 6.0
1.0 31.0 23.0 5.0
2.0 27.6 22.0 4.0
3.0 24.6 21.0 3.0
4.0 21.9 20.0 2.0
5.0 19.5 19.0 1.0
6.0 17. 4 18.0 0.0
7.0 15.5 17.0 -1.0
8.0 13.8 16.0 -2.0
9.0 12.3 15.0 -3.0
10.0 11.0 14.0 -4.0
11.0 9.8 13.0 -5.0
12.0 8.7 12.0 -6.0
13.0 7.8 11.0 -7.0
14.0 6.9 10.0 -8.0
15.0 6.2 9.0 -9.0
16.0 5.5 8.0 -10. 0
17.0 4.9 7.0 -11. 0
18.0 4,4 6.0 -12. 0
19.0 3,9 5.0 -13. 0
20.0 3,5 4.0 -14 .0
21.0 3,1 3.0 -15 .0
22.0 2,8 2.0 -16. 0
23.0 2,5 1.0 -17.0
24.0 2,2 0.0 -18 .0
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
MicrophoneInputs1to8
XLRfemale
Signal
levels
Clipping level Nominal
level
Level
setting
[dB] [mVpp] [dBu] [dBu]
0.0 275.0 -18 .0 -36.0
1.0 24 5.1 -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 -2 7.0 -45.0
10.0 87.0 -28.0 -46.0
11.0 7 7.5 -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
Lineoutputs5to6
XLRmale
Signal
levels
Absolute max
output level
Nominal
level
Level
setting
[dB] [Vpp] [dBu] [dBu]
-24.0 2,2 0.0 -18 .0
-23.0 2,5 1.0 -17. 0
-22.0 2,8 2.0 -16 .0
-21.0 3,1 3.0 -15. 0
-20.0 3,5 4.0 -14 .0
-19.0 3,9 5.0 -13. 0
–18.0 4.4 6.0 -12. 0
–17. 0 4.9 7. 0 -11. 0
–16.0 5.5 8.0 -10 .0
–15.0 6.2 9.0 -9.0
–14.0 6.9 10.0 -8.0
–13.0 7.8 11.0 -7.0
–12.0 8.7 12.0 -6.0
–11. 0 9.8 13.0 -5.0
–10.0 11.0 14.0 -4.0
–9.0 12.4 15.0 -3.0
–8.0 13.9 16.0 -2.0
–7.0 15.6 17.0 -1.0
–6.0 17. 5 18.0 0.0
–5.0 19.6 19.0 1.0
–4.0 22.0 20.0 2.0
–3.0 24.7 21.0 3.0
–2.0 27.7 22.0 4.0
–1.0 31.0 23.0 5.0
0.0 34.8 24.0 6.0
This specication is valid for Mic 1–8 inputs
if Microphone Level setting is selected.
This specication is valid for Line 1–8 inputs
if Line Level setting is selected.
Contents
Contact us
Introduction
The physical interface
Connecting to the codec
The physical interface