Technical Description of TANDBERG 8000 with software version E3/B8
D12008 Rev. 11
42
4.5
Audio Interfaces and Special Audio Features
Audio Inputs
3 x Microphone, 24V Phantom Powered, XLR Connector
3 x Audio, RCA Connector (Line Level)
Audio Outputs
3 x Audio, RCA Connector (Line Level)
The TANDBERG 8000 Codec has the following audio connectors:
Mic.
1
Mic.
2
Mic.
3
1
2
3
1
2
-
AUX
3
-
VCR
4
5
-
AUX
6
-
VCR
Audio in
Audio out
4.5.1
Audio Inputs
The TANDBERG 8000 Codec has a total of six audio inputs, three microphone audio inputs and
three line level inputs.
General:
•
The input gains on all six inputs are independently adjustable.
•
All six inputs can be independently enabled or disabled.
•
By default, all inputs are enabled, ready to be connected with an audio source.
•
All audio input signals are mixed together if enabled.
•
Inputs that are disabled will be muted automatically.
•
When selecting ‘Restore Defaults’, all audio settings will be set to factory-programmed values.
•
The default settings are correct for Audio Technica AT841-R microphone (Mic in 1-3) and
for most consumer electronics (CD-players, cassette recorders, VCRs, etc., Audio in 4-6).
•
After installation, audio input level settings should remain unchanged.
•
When storing presets, the selected audio settings are stored together with the video
inputs/camera positions.
4.5.1.1
Specification microphone Inputs
Mic in 1-3
:
These inputs are intended for electret type microphones. The inputs are balanced. By using the
audio input level menu, the gain can be adjusted correctly for a wide range of microphones.
Connector label
MIC 1, 2 and 3
Signal type
Balanced
Connector (Codec)
XLR-F, pin 1-gnd, pin 2-hot, pin 3-cold/neutral
Phantom power voltage
24 V +/- 5%
Phantom power resistor, pin 2
1200 ohms
Phantom power resistor, pin 3
1200 ohms
Max. Ph. Power current (per Mic)
12 mA
Input impedance between pin 2 and 3
2400 ohms
Max. Input level (max. input gain)
6.2 mVpp
Max. Input level (min. input gain)
83 mVpp
Range - menu adjustable input gain
22.5 dB (16 steps of 1.5 dB)
