Grass Valley 2200 - Manual (Page 76)

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Section 3 Ð Editor Interface Commands
Timeline Control (4E, 4F, CE, and CF) Commands
The Timeline Control commands allow the editor to manipulate a speciÞed effectÕs
timeline. The controlling device may read the current position, write a new
position, or trim the current position by a speciÞed amount. All positions or trims
are measured as a Þeld count. The switcherÕs response to the Read Timeline
command is the Write Timeline command.
Table 3-26. Timeline Control Commands
(1) Response guaranteed for 2 fields.
(2) Switcher latency applies.
Effects Addresses
Valid Effects Addresses for the Timeline control commands are as follows:
EFFECTS ADDRESS ASSIGNMENTS
00 PGM-PST Mix System
01 Mix/Effects 1 System
02 Mix/Effects 2 System
03 Mix/Effects 3 System
04 Downstream Keyer (DSK)
05 Background (BKGD)
06 Miscellaneous (MISC)
07 DPM 1
08 DPM 2
09 DPM 3
0A DPM 4
0B Master Timeline (all enabled levels)
FF All levels specified in the bit-mask
Function
Byte
Count
Effects
Address
Command
Code
Message
Read Timeline Time (1) 02 EX 4E None
Set Timeline Time (2) 06
08 EX
FF CE
CE 4-byte write value
write value + 2-byte bit-mask
Trim Timeline Time (2) 06
08 EX
FF CF
CF 4-byte trim value
trim value + 2-byte bit-mask
Run Timeline (2) 06
08 EX
FF 4F
4F 4-byte speed value
speed value + 2-byte bit-mask