Studer SW V4.0 OnAir 1000 Operating And Service Instructions page 144

OnAir 1000 Digital Mixing Console
14-16 Wiring and Hardware
EXT PFL CTRL (D-type, 9 pin, male):
Pin Signal
5
1 +5 V SUPPLY
9
4
2 External PFL IN –
8
3
7 3 External PFL OUT
2
6
4 External TB COMMON +
1
5 GND
Notes: "External PFL IN +" and/or "External TB COMMON" can be connected
either to "+5 V SUPPLY" or to an external power supply (max. +15 V
A pushbutton or an active-low control signal from a radio automation sys-
tem is connected between the "–" control inputs and "GND". The inputs
are opto-coupler inputs with internal 1 kΩ current limiting resistors.
The "External PFL OUT" output is an open-collector output; a small load,
such as an LED, an opto-coupler, or a relay can be driven directly. The
current must not exceed 100 mA.
The "+5 V" supply current for LEDs, opto-couplers, or relays must not
exceed 50 mA in total.
SW V 4.0
1 k Ω
1 k Ω
1 k Ω
max. 100 mA
+5 V max. 50 mA
Pin Signal
6 External PFL IN +
7 External TB to CR –
8 Spare OUT
9 External TB to Studio –
6 External PFL IN +
2 External PFL IN –
4 External TB COMMON +
7 External TB to CR –
9 External TB to studio –
3 External PFL OUT
8 Spare OUT
1 +5 V SUPPLY
5 GND
Date printed: 23.10.03
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