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DResearch – User Manual TeleObserver MR3140
2.4.8
2008-09-19
The audio interface
Use the audio adapter cable which is provided in the accessories to connect external audio devices to
the recorder. The interface (D-SUB 9, female) is wired as follows:
Interface
5
9
1
Pin
1
Name
Audio PWR2
Description
Microphone phantom voltage 2
2
AudioIn2
Audio input 2
3
GND
Audio GND
4
AudioIn1
Audio input 1
5
Audio PWR1
Microphone phantom voltage 1
6
GND
Audio GND
7
GND
Audio GND
8
GND
Audio GND
9
GND
Audio GND
6
(female)
Table 5: Audio interface pin layout
2.4.9
GPIO-interface – detector inputs and switch relay outputs
Sensor input 1 ... 6
Each of the 6 available inputs is constructed as shown
in the adjacent circuit.
Sensor systems can be connected as desired
depending on requirements. This allows the MR3140 to
be fully integrated within existing systems.
Recording module
Relay output 1…4
Each of the 4 relay outputs is constructed as shown
(left).
Here too the connection options enable the recorder to
offer full flexibility for the connection of devices and
systems.
It is possible to connect indicators, diodes and bulbs or
to control other whole systems directly.
Recording module
21