Studer SW V4.0 OnAir 1000 Operating And Service Instructions page 135

NOT ACTIVE
LOCATE KEY
LOCATE PFL KEY
ATTENTION
LOCATE PFL/LOC KEY
NOT ACTIVE
EXT. MUTE
EXT. ON/OFF
Date printed: 23.10.03
For CTRL OUT 2A/B, seven operating modes are available:
Output is always open.
Output is closed (i.e. pulled to GND) if the OFF key is pressed and the
input channel is active.
PREVIEW Output is closed if the PFL key is active and the PREVIEW function has
been activated; the input channel must be switched off.
Output produces a pulse if the PFL key is deactivated (LOCATE function
is activated).
Output is closed as long as the OFF key is pressed, independent of whether
the input channel is open or closed.
ON LAMP Output is closed while the ON lamp is illuminated.
Combination of the LOCATE KEY and LOCATE PFL KEY functions.
For details, please refer to
The CTRL IN A/B can be used for muting the input channel, for remote
control of the ON/OFF key or for entering ready status. Four operating
modes are available:
Input is inactive.
READY Acknowledgement of a ready signal.
Channel is muted (e.g. cough key).
External ON/OFF switchover.
Notes: "COMMON" can be wired either to "+5 V SUPPLY" or to an external
power supply (max. +15 V
between "CTRL IN A" or "CTRL IN B" and "GND". The inputs are opto-
coupler inputs with internal 1 kΩ current limiting resistors.
All outputs are open-collector outputs. Small loads, such as LEDs, opto-
couplers, or relays can be driven directly. Maximum current per open-
collector output must not exceed 100 mA.
The "+5 V" output can supply up to 50 mA for opto-couplers or relays.
The sum of all "+5 V" outputs for all input CTRL connectors of the whole
console must not exceed 300 mA!
SW V 4.0
OnAir 1000 Digital Mixing Console
chapter 8.
+5 V
max. 50 mA
max. 100 mA
max. 100 mA
1 k Ω
1 k Ω
). An active low control signal is connected
DC
2 +5 V SUPPLY
1/5 CTRL OUT 1A/B
3/7 CTRL OUT 2A/B
4 CTRL IN A GND (9)
(e.g. cough key)
6 COMMON +5 V (2)
8 CTRL IN B
9 GND
Wiring and Hardware 14-7