OnAir 2000M2 Digital Mixing Console
15-12 HW Modules SW V 4.0 Date printed: 12.11.03
15.13 Monitoring Module 1.942.134.xx /1.942.180.xx
The monitoring module is a (mainly analog) monitoring unit. It has five
external analog inputs in addition to the console’s internal buses. It pro-
vides analog output signals for headphones and loudspeakers in the control
room and the studio.
The Monitoring Module w. TB return 1.942.180.xx provides an additional
TB line input, as well as additional CR and studio control inputs.
For details refer to the block diagram in chapter 1, which is an overview
over the complete signal processing functionality.
The parallel “STUDIO MON CTRL” interface (25-pin D-Type, male)
allows the construction of a studio monitoring unit. The signals on this in-
terface are:
• 6 × monitor source selector in (opto-coupler inputs)
• 3 × talkback target in (opto-coupler inputs)
• 6 × source selector feedback out (open collector outputs)
The monitor sources and talkback targets are described in chapter 7,
“Monitoring”.
One of the external analog inputs on the module is used as a PFL input
provided for a CAB (radio automation) system.
The following control signals are available for this purpose:
• 1 × External PFL IN (opto-coupler input)
• 1 × External PFL OUT (open-collector output)
The “EXT PFL CTRL” D-Type connector (9-pin, male) is used for the
control signals from and to the CAB system. If “External PFL IN” is acti-
vated, the “EXT PFL” audio signal on the “EXTERN MONITOR INPUT”
connector is routed to the PFL bus.
When pressing the “EXT PFL” key in the monitoring section, the “Exter-
nal PFL OUT” control signal on the “EXT PFL CTRL” connector is ac-
tive, and the “EXT PFL” audio signal on the “EXTERN MONITOR
INPUT” connector is routed to the PFL bus as well.
1
3
2
STUDIO
MON
CTRL
MONITORING
SIGN.
STUDIO MONITOR (AUDIO)
EXTERN MONITOR INPUT
EXT
PFL
CTRL
CR OUT
L
R
GUEST
CTRL
1
3
2
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