Audio Signal Levels In Vpp And Dbu - TANDBERG Codec 3000 MXP Reference Manual

Interfaces and Sockets – Codec 6000

Audio Signal Levels in Vpp and dBu

Microphone Inputs 1, 2 & 3
Signal levels
Signal Clipping levels Nominal
levels
Input
menu level
setting
[dB] [mVpp] [dBu]
0.0 83.0 –28.4
1.5 69.8 –29.9
3.0 58.8 –31.4
4.5 49.4 –32.9
6.0 41.6 –34.4
7.5 35.0 –35.9
9.0 29.4 –37.4
10.5 24.8 –38.9
12.0 20.8 –40.4
13.5 17.5 –41.9
15.0 14.8 –43.4
16.5 12.4 –44.9
18.0 10.4 –46.4
19.5 8.8 –47.9
21.0 7.4 –49.4
22.5 6.2 –50.9
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
inputs 1–3 Audio outputs 1–3
D 13887.08
MAY 2008
MXP
Microphone Input 3
Line level mode signal levels
Signal Clipping levels
level levels
Input
menu level
setting
[dBu] [dB] [Vpp] [dBu]
–46.4 0.0 15.5 17.0
–47.9 1.5 13.0 15.5
–49.4 3.0 11.0 14.0
–50.9 4.5 9.2 12.5
–52.4 6.0 7.8 11.0
–53.9 7.5 6.5
–55.4 9.0 5.5
–56.9 10.5 4.6
–58.4 12.0 3.9
–59.9 13.5 3.3
–61.4 15.0 2.8
–62.9 16.5 2.3
–64.4 18.0 2.0 –1.0
–65.9 19.5 1.6 –2.5
–67.4 21.0 1.4 –4.0
–68.9 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.
Audio Inputs 4, 5 & 6
Signal levels
Nominal Signal Clipping levels
level levels
Input
menu level
setting
[dBu] [dB] [Vpp]
–1.0 0.0 15.5
–2.5 1.5 13.0
–4.0 3.0 11.0
–5.5 4.5 9.2
–7.0 6.0 7.8
9.5 –8.5 7.5 6.5
8.0 –10.0 9.0 5.5
6.5 –11.5 10.5 4.6
5.0 –13.0 12.0 3.9
3.5 –14.5 13.5 3.3
2.0 –16.0 15.0 2.8
0.5 –17.5 16.5 2.3
–19.0 18.0 2.0
–20.5 19.5 1.6
–22.0 21.0 1.4
–23.5
22.5 1.2
Default levels are denoted as follows:
32
TANDBERG 3000
REFERENCE GUIDE FOR SYSTEM INTEGRATORS
Audio Outputs 1, 2 & 3
Nominal Signal Absolute max output
level levels
Input
menu level
setting
[dBu] [dBu] [dB] [Vpp]
17.0 –1.0 0.0
15.5 –2.5 1.5
14.0 –4.0 3.0
12.5 –5.5 4.5
11.0 –7.0 6.0
9.5 –8.5 7.5
8.0 –10.0 9.0
6.5 –11.5 10.5
5.0 –13.0 12.0
3.5 –14.5 13.5
2.0 –16.0
15.0
0.5 –17.5
16.5
-1.0 –19.0
18.0
-2.5 –20.5
19.5
-4.0 –22.0
21.0
-5.5 –23.5
22.5
–31.4
This specification is always valid for output 2 and 3,
and for output 1 at volume setting 15.
Tip:
To convert dBu values to dBV, subtract
2.2 dB from the dBu value.
–10 dBu ≡ –12.2 dBV
example:
NoTe:
The input clipping levels and the
absolute max output levels all assume
sinusoidal signals for the dBu values.
MXP & 6000 MXP
Signal levels
Nominal
level level
[dBu] [dBu]
1.2 –5.5 –23.5
1.4 –4.0 –22.0
1.6 –2.5 –20.5
1.9 –1.0 –19.0
2.3 0.5 –17.5
2.8 2.0 –16.0
3.3 3.5 –14.5
3.9 5.0 –13.0
4.6 6.5 –11.5
5.5 8.0 –10.0
6.5 9.5 –8.5
7.8 11.0 –7.0
9.2 12.5 –5.5
11.0 14.0 –4.0
13.0 15.5 –2.5
15.5 17.0 –1.0