Tait TM8235, Руководство по обслуживанию

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458 TMAA01-01 Line-Interface Board TM8100/TM8200 Service Manual
© Tait Electronics Limited June 2006
17.4 Programming Information
The lines from the radio’s internal options connector that are used by the
line-interface board are IOP_GPIO1 to IOP_GPIO4. The behaviour of
these lines is configured in the Programmable I/O and PTT forms of the
programming application. Refer to the online help of the programming
application for more information.
The following table explains the required input and output line-interface
connections.
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Table 17.6 Line-interface input and output connections
Radio Signal Function Comments
GPIO1 PTT FROM OPT This signal causes the radio to transmit. This normally
requires External PTT1 to be set up in the Digital tab of
the Programmable I/O form and the External PTT (1) tab
of the PTT form.
GPIO2 Busy/Gate This active high signal allows connection to the Busy/Gate
output signal. If this is not used, the Action field is set to
No Action and the Active field is set to Low.
GPIO3 Busy/Gate (Keying Line) This active high signal allows connection to the Busy/
Gate output signal. This signal also allows the single line
keying functionality.
GPIO4 AUX This allows the line-interface board to be disabled. One of
the four control head function keys is selected to control
this AUX line.
For the associated LED to reflect the status of the line-
interface board, the Function Key Action field on the Key
Settings form must be set to Action Digital Output Line.