OnAir 2000M2 Digital Mixing Console
2-4 Hardware SW V4.0 Date printed: 12.11.03
2.4 Touch Screens
Each of the LC displays has a resolution of 640 × 200 pixels. A cold cath-
ode fluorescent lamp (CFL) provides the back light, having a typical life-
time (50% brightness) of 10'000 to 15'000 hours (meaning about 13 to 20
months of continuous operation). CFL replacement is very easy, and spare
parts are available.
Caution! The CFL supply voltage is about 400...600 V. Switch the console OFF
before opening it!
A touch matrix with 12 × 6 active fields is mounted on the LCD. The
touch switches are pressure sensitive and can only switch if a certain force
is applied. Therefore the touch matrix function is not influenced by con-
tamination (as fingerprints etc.).
The touch-screen surface consists of a PET foil. Never use any solvents as
acetone to clean the surface. Most glass or PC monitor cleaners do a good
job.
2.5 User Surface
On the channel sections there is only one PCB (Channel Front Board
1.942.210) that reads the touch matrix, all keys, and the faders.
The center section consists of three PCBs:
Control Front Board I (1.942.610) is the controller for the center section. It
is mounted in the back of the LCD and reads the touch matrix, the rotary
encoders, as well as all keys and the potentiometers of the monitoring
control section.
Control Front Board II (1.942.111) is the PCB with the control elements
for the monitoring (volume controls, keys).
Control Front Board III (1.942.112) carries the rotary encoders.
2.6 Signal Processing and System Control
The DSP Board (1.942.102) performs the audio functions for the console.
All input modules are connected to this board via the ribbon cable con-
nectors labeled IMB-1...IMB-4 (IMB = input module bus). Each IMB con-
sists of an entire six-channel module (Channel Front Board + 6 input mod-
ules).
The output modules are connected to the output module bus (OMB). All
output modules, the monitoring module and the Control Front Boards are
connected to the OMB.
For more details refer to the Operating Instructions, chapter 1.
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