Grass Valley Maestro Master Control v.2.4.0 - Manual (Page 420)

MAESTRO User Manual 416
Figure 319. The GPIO Definition Table
Follow these steps to configure the Pre Roll Take’s default value:
1. Add a new row to the table by right-clicking the table and then selecting
the Insert Row Below option.
2. Select the Device Type drop-down and then select the MaestroGPO
option.
3. Select the preferred identifier from the identifier drop-down list.
4. Select the Action option from the Sub System drop-down list.
5. Select the Pre-roll option from the purpose drop-down list.
6. Select the Level option from the Trigger Type drop-down list.
7. Select either the High or Low option from the Trigger Sense drop-down
list.
8. Enter the preferred duration in the Parameters field. The example
shown in
Figure 319 on page 416 is “2.00.” The maximum pre-roll
duration is based upon video standard.
• A 30 frame video standard’s maximum would be “9:29.”
• A 25 frame video standard’s maximum would be “9:24.”
9. Click the OK button and then the Apply button to apply the changes.
10. Save the changes by selecting Save from the File menu (File > Save).
Defining the Pre-roll Duration - Source Assignment Sub-Panel
An alternative that you may use is to set or change the Pre Roll duration
using the Source Assignment sub-panel. The time must be entered in a sec-