Technical Description of TANDBERG 8000 with software version E3/B8
D12008 Rev. 11
43
4.5.1.2
Specification audio line Inputs
Audio in 4
:
Input 4 enables connection of a microphone amplifier or a microphone mixer if more than 3
microphones are required.
When using an external mixer, it is very important that this is a fixed mixer. Automatic, smart
and other types of adaptive mixer will cause the echo canceller to malfunction.
Audio in 5
:
This input is labelled AUX and is intended for connection to external playback devices or to
telephone add-on hybrids.
As there is no acoustic echo canceller on this input, microphone mixers should
not
be
connected.
Audio in 6
:
This input is specially designed for connection to a VCR but may also be connected to other
playback devices. This input will automatically be reduced if a microphone is activated (VCR
ducking).
Note:
When mode is set to
Auto
for this input, it will not be enabled unless Video input 4
(i.e.VCR) is selected.
As there is no acoustic echo canceller on this input, microphones mixers should
not
be
connected.
Connector label
AUDIO IN 4, 5 and 6
Signal type
Unbalanced
Connector (Codec)
Female RCA/Phono, sleeve-ground, centre-signal
Input impedance
10K ohms
Max. Input level (max. input gain)
1.17 Vpp
Max. Input level (min. input gain)
15.5 Vpp
Range - menu adjustable Input gain
22.5 dB (16 steps of 1.5 dB)
4.5.1.3
Specification standard microphone (AT841R)
Mic. Audio-technica AT841R
Specification
Type
Fixed-charge back plate permanently polarized
condenser
Connector (Codec)
XLR, pin 1-gnd, pin 2-hot, pin 3-cold/neutral
Polar pattern
Omnidirectional in hemisphere above mounting
surface
Phantom power
9 - 52 V DC, 2 mA typical
Sensitivity
-35
±
3 dBm (0dB=1 V/1Pa)
Impedance
200 ohm (
±
30% at 1kHz)
Maximum Input sound level
131 dB, 1 kHz at 1% T.H.D.
Signal to Noise ratio
Greater than 69 dB at 1 kHz/1 Pa
Weight 81
gram
Dimensions, microphone
Width 65 mm/2,56”
Length 65 mm/2,56”
Height 15 mm/0.59”
