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Polarity Field
This field displays the Polarity of the input. The encoder changes the polarity between positive (+) and
negative (-). This field is only available if the {EDGE} field is set to BOTH.
Edge Field
This field displays the triggered Edge. The encoder adjusts the triggered edge between rising/falling/both.
GPO VST Keys & Encoders
GPO Field
The {ON} key enables the GPO function. GPIO Outputs are via pairs of relay contacts.
Function Field
This field displays the Output function. Its encoder selects the function.
Parameter Field
This field displays the Parameter (e.g. Channel number). There is no parameter for TB OUT. The encoder
adjusts the Parameter.
Polarity Field
This field displays the Polarity of the Output. The encoder changes the polarity between positive (+) and
negative (-). This field is only available if the {EDGE} field is set to BOTH.
Time Field
This field displays the relay pulse time. The relay contacts will revert to their original position at the end of
the pulse time. The encoder adjusts the pulse length in ms (a blank field means no pulse is generated, i.e.
the relay contacts stay in their new position).
It is suggested that a pulse time is set only when the EDGE field (see below) is set to 'RISING' or 'FALLING.
It is also suggested that no pulse time is set when the EDGE field is set to 'BOTH'. See Figure 16-2 for a
timing diagram of relay operation using fader start.
Edge Field
This field displays the triggered Edge. The encoder adjust the triggered Edge between rising/falling/both.
Page 16 - 2
Soundcraft Vi1™ User Guide Issue 0810
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