21
Interfaces and Sockets – Codec 3000
MXP
D 13887.08
MAY 2008
TANDBERG 3000
MXP
&
6000
MXP
REFERENCE GUIDE FOR SYSTEM INTEGRATORS
Microphone Inputs Nos. 1–2
.
Two balanced microphone
inputs for electret microphones
balanced, 24V phantom
powered via XLR connectors.
Use
Audio Input No. 3
to
connect to external playback
devices. This input can also
be configured as a microphone
input. It will then function
in
lieu
of the Mic. 2 input and be
connected to Mic. 2’s echo
canceller (which can be turned
on/off).
Use
Audio Input No. 4
to
connect a VCR or DVD player
to the system. For systems
configured with stereo I/O,
connect the VCR/DVD right
channel to this input. This
input should be used when
connecting a telephone add-on
system.
Tip!
Audio Input No. 4 is not
equipped with an acoustic
echo canceller. Connecting a
microphone to this input can
therefore not be recommended.
Use
Audio Output No. 2
(the VCR output) to
provide a mixed signal consisting of audio
from the local side (VCR not included) and
audio from the far end.
This output should be used when connecting a
telephone add-on system.
For system configured with stereo I/O and
with SPDIF
†
active on Audio Output No. 1, this
output will provide the VCR left channel stereo
information.
For systems configured with stereo I/O, stereo
speakers and SPDIF
†
not active, this output
will provide the right channel of the loudspeak-
er signal (the left channel will be provided on
the Audio Output No. 1).
Hardware Information
Microphone(s)
Audio Input(s)
Audio Outputs
Signal type
Balanced
Unbalanced
Socket
XLR-F
RCA/phono
Input impedance
2400
W
(pin 2–3)
10 k
W
Output impedance
680
W
Max input level when set to
min. input level
83 mVpp
15.5 Vpp
Max output level when set
to max. output level
15.5 Vpp
Max input level when set to
max. input level
6.2 mVpp
1.2 Vpp
Max output level when set
to min. output level
1.2 Vpp
Gain range
22.5 dB (16 steps of 1.5 dB)
Phantom power
24 V ± 5 %
Phantom power resistor
pin 2
1200
W
Phantom power resistor
pin 3
1200
W
Max phantom power
current
12 mA
XLR pin-out
External view of socket
PIN 1:
Gnd
PIN 2:
Hot
PIN 3:
Cold/neutral
1
2
3
RCA pin-out
External view of socket
GND
Signal
Use
Audio Output No. 1
to provide a mixed
signal of audio from far end and local
external devices connected to input 3 & 4 in
addition to dial tones.
This output should be connected to the local
loudspeaker system, which may, or may not,
include the TANDBERG Digital Natural Audio
Module.
For systems configured with stereo
speakers and SPDIF
†
active, the left and
right channel of the loudspeaker signal will
both be provided on this output.
For systems configured with stereo
speakers and SPDIF
†
not active, the
left channel of the loudspeaker signal
will be present on this output. The right
loudspeaker channel will be provided on
Audio Output No. 2.
†
SPDIF (Sony/Philips Digital Interface)
is used by the Digital Natural Audio module.
Stereo Settings
Settings
Output Response
Out 1 mode
Stereo
I/O mode
Stereo
speakers
Audio Out 1
Audio Out 2
Analogue
Off
Off
Loudspeaker mono
VCR
Analogue
Off
On
Loudspeaker L
Loudspeaker R
Analogue
On
Off
Loudspeaker mono
VCR
Analogue
On
On
Loudspeaker L
Loudspeaker R
SPDIF
Off
Off
Loudspeaker mono
VCR
SPDIF
Off
On
Loudspeaker L & R
VCR
SPDIF
On
Off
Loudspeaker mono
VCR
SPDIF
On
On
Loudspeaker L & R
VCR
Tip!
Audio signal levels
expressed in volts and dBu
can be found overleaf.
NoTe!
Audio inputs 3 &
4 are referred to as
Line
input 1 & 2
in the API.
Tip!
Unused, but connected
audio inputs should be set
to Off to avoid unwanted
audio/noise.
Audio Sockets
