PRODUCTION
page 42
Post-production
The MVS3 is optionally available with a serial editing interface system. This system
allows bi-directional data transmission to edit controllers and other broadcast equipment.
A SMPTE-specification link is used, including a 9-pin ribbon cable connector and RS-422
drivers.
The link protocol has been designed for compatibility with the Grass Valley GVG-100
video switcher protocol, so any edit controller with GVG-100 drive capability can be
used.
Operating the switcher from the edit controller is simple:
1. Connect a 9-wire cable with DB-9 connectors between MVS3 and edit
controller. Pin use is shown on p. 13 of Installation.
2. Enable edit controller for serial interface operation.
3. Edits should now be performed on the MVS3. Note that manual front
panel operations can be done at the same time. If trouble:
4. Check bit rate and parity used by edit controller and use Command 17 to
reset if necessary.
5. Check device address used by edit controller and use Command 18 to
reset MVS3 address if necessary.
6. Use Command 20 to check that MVS3 cycles through Idle to Active and
Selected. This checks out the data path from edit controller to MVS3,
and the device address.
7. Use Command 21 to transmit from MVS3 to edit controller to allow
tracing data path.
