Cisco TelePresence System Codec C90 Guide de l'utilisateur télécharger pdf (Page 19)

Cisco TelePresence System Codec C90 Physical interface guide

D14644.03 Codec C90 Physical Interface Guide TC4.1, February 2011.

w ww.cisco.com

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

Introduction

The physical interface

Connecting to the codec

The physical interface

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Cisco TelePresence System Codec C90 Guide de l'utilisateur Page 19

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