Options, Licensing and Upgrades
7.8 GPI Option Card
7.8.1 General
The GPI option card supports the following functions:
• GPI triggered splicing.
• Alarm relay.
• GPI Loading of stored configurations (Not supported in this Release).
• IEC-232 (RS-232) Data Input (Not supported in this Release).
7.8.2 GPI Triggered Splicing
The GPI card provides an option for splicing triggered by GPI pin state change.
When configured, the card sends SCTE-104 messages to the encoders of the
VCMs fitted in the unit by closing and opening general purpose input pins.
7.8.3 Alarm Relay
The GPI card provides an alarm and a fail relay on the 25-way D-type interface.
The GPI inputs allow various specific Encoder functions to be controlled using 16
contact closure inputs. The controlled functions are software assigned.
The alarm/fail relay contacts provide alarm relay interfaces that can be used to send
a signal to remote equipment on an alarm condition.
7.8.4 Load Stored Configurations (Not supported in this Release).
The GPI input pins can be used to trigger the loading of any of the 64 stored
configurations on the unit. The selection of the stored configuration is made by
configuring 6 of the GPI input pins as a binary representation of the store number
while a 7
th
pin provides the toggle to action the loading of the configuration.
7.8.5 Data Input (Not supported in this Release).
The Data Input provides an asynchronous serial data communications interface
conforming to the IEC-232 (RS-232) standard.
7.8.6 Interfaces
The GPI option card has the following interfaces:
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