When the defined signal edge is detected on the Event Input GPIO Connector, an
ASCII message is created containing the current time, and Event Broadcast
through the RS-232 Output port.
ASCII messages are stored in a Message Buffer. The message buffer can store
512entries before overflowing. Messages may be lost if the buffer overflows.
Messages can be output in one of two ways:
If the Mode is set to Broadcast, messages in the Message Buffer will be out-
put immediately. If another event is captured while a message is being sent,
it will be queued in the buffer until the first message completes, then the
next message will be sent.
If the Mode is set to Request, messages in the Message Buffer are only sent
when the Request Character is received.
The output format used is selected among a small group of formats with the cap-
ability to output data at 5ns resolution. Event Broadcast Output formats are
detailed in "Event Broadcast Time Code Formats" on page370.
To configure the Event Broadcast functionality:
1. Configure the multi-I/O connector pinout to create the Event Input and
Event Broadcast ports:
Enable the Event Broadcast output. Navigte to MANAGEMENT >
NETWORK > Pin Layout. Click on the plus sign on the layout screen
and scroll down the Signal Type until you select ATC_OUT | RS232_
EVENT. This option must be configured on the 9 & 10 pins. Click sub-
mit.
Enable the Event Input. Click on the plus sign again, scroll down the
Signal Type and select GPIO_IN | DCLS_TTL. This option must be con-
figured on the 11 & 12 pins. Click submit.
2. Configure the input settings. Navigate to INTERFACES > REFERENCES >
EVENTINPUT 0, or to INTERFACES > OPTION CARDS: Event Input 0. The
status window will display, providing information on the current settings:
the Event Capture and Event Active Edge settings, as well as the Last
Event Message.
3. Click the Edit button to open the configuration window:
Event Capture: Enables the processing of events on the Event Input
(pins 11 & 12). When set to “Disabled”, no event messages will be
queued. When set to “Enabled”, event messages will be triggered (if a
valid Format is selected).
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CHAPTER 2 • VersaSync User Manual Rev. 12
2.7 Configuring Inputs/Outputs
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