2.8 Tally light
There are two outputs to power “On the Air” signal-
ing lights; for studies A and B. Each output delivers
12V / 250mA. This voltage makes it possible to
connect up to 2 Solidyne 12V LED’s on-air indica-
tors. For other models of signaling lights, verify
that the set consumption is less than 250 mA.
The GPO-8 output also delivers 12V / 250mA and
can be programmed to operate with any of the
Tally Light outputs.
Optionally, GPO outputs 1 to 7 can be used to con-
trol individual on-air indication lights for each mi-
crophone. These outputs are of the “open dry” type
(they switch between open circuit or ground) there-
fore they require an external power supply and, de-
pending on consumption, a switching circuit (see
below).
WARNING
The outputs for tally lights are protected by a PTC or fu-
sistor, which operates by over-heating when the current
exceeds 250 mA; cutting the voltage at the output.
To restore the voltage, disconnect the load (tally light)
and check the cause of over-consumption (excessive
consumption or a short circuit).
2.9 GPIO
The
GPIO
(General Purpose Input/Output) connec-
tor offers 4 inputs and 8 outputs. The GPIs allows
to command some UX24 features like mics activa-
tion. GPOs can trigger external devices, such as
“on-air” signaling lights; the Solidyne Audicom soft-
ware or the audio processor.
•
The
4 GPI
supports
trigger signals from 5 to
15V / 150mA (active high).
•
GPO
1 to 7
are “open drain”, supporting sig-
nals from 5 to 24 V / 250 mA.
•
GPO 8
gives 12V / 250 mA (active high). It
can manage a relay.
2.9.1 Signals at the GPIO connector
The GPIO connector is a
female
D15
located at
rear panel. The pin-out is the following:
2.9.2 How to connect mic arms with LEDs
GPOs 1 to 7 can work as electronic switchs man-
aging LEDs directly connected to an external power
supply. The consumption must not exceed 250mA.
The following figure shows an example of direct
connection of a microphone arm with LED light, us-
ing GPO 1.
For currents greater than 250 mA, relays must be
used for switching. Note that GP8 can be used to
directly handle a 12V coil relay, with a maximum
consumption of 250 mA.
2.9.3 Configure the GPIO behavior
GPIO configures from SETTINGS GPIO. Please
→
refers to
4.8 - GPIO settings
.
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Solidyne UNIDEX UX24
