Newtek TriCaster 8000 User Manual download pdf (Page 439)

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SENDING GPI COMMANDS

A special macro command allows you to send GPI signals to external devices and

systems via network-connected GPI interface devices (such as the eBOX™ from

JLCooper Electronics).

GPI macro entries are formatted as shown below:

Delay (ms)

Shortcut

Value

Key 1

Value 1

etc.

####

gpi

name

GPI_pin#

boolean

 Delay – the interval, in milliseconds, between the time when the command

on the prior line (if any) was issued to the system, and execution of this line.

 Shortcut – Use the entry “gpi” in this field to send a GPI signal.

 Value – The shortcut value is the name of the GPI device (defined earlier in

gpi_setup.xml) that you want the signal defined on this line to address.

 Key # (0 – n) – The value you enter in this field identifies a target pin on the

external DVI device to receive a signal defined in the following field. The

entry should be formatted as “pin#” (e.g., “pin1”, without quotation marks).

 Value # (0 – n) – This value controls the contact closure state (on or off) for

the GPI device pin identified by the preceding key. The value can be entered

variously as “1” or “0” , “on” or “off”, “true” or “false” (without quotations).

A typical entry might look like the following:

Delay (ms)

Shortcut

Value

Key 1

Value 1

etc.

500

gpi

jlcooper

pin12

Hint: Multiple GPI pins can be targetted simultaneously by key/value pairs entered

on a single line. Alternatively, some GPI devices require a GPI ‘pulse’ of a specified

duration. In such a case, you might send an “on” command on one line, followed –

after a suitable delay – by an “off” command sent to the same pin.

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Newtek TriCaster 8000 User Manual Page 439

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