Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 26)

26 MAESTRO — Automation Interface Protocol Technical Reference Manual
Section 1 — Introduction
KEY 2. Alternatively, use the SET_KEY command for full keyer con-
trol.
3. VID_1KEY and VID_2KEY change the settings on Keyer 1 and Keyer 2
respectively. Note that neither of these commands provide complete
control of the Saturn keyers. The SET_KEY command allows complete
manipulation of the keyers.
4. The RATIO command sets the same ratio for both mixers. The READ
RATIO command returns the ratio setting for Mixer 1.
5. Audio gain reads (MAL_PST, MAL_PGM, etc.) will occasionally return
a value one less than the value from a pre ceding SET command. This is
due to the command being rounded down to assure a minimum gain
setting occurs.
6. SET_MIX command controls all audio levels on the specified mixer. It
reports status only on the first audio level. The SET_AUDIO command
allows complete manipulation/reporting of audio parameters.
7. READ PROLL reports 9.9 seconds for preroll times greater than 9.9
seconds.
8. The time value passed in PROLL is two bytes, the first byte being the
seconds (0-9), the second byte being tenths (0-9).
9. READ CLK reports the time known by the video processor board. This
is set by time manager, which gets its source from the VM board or the
file server. Automation can not currently change the time.
10. System service BEGIN/END keywords are supported.
11. UPDATE command - Issuing an UPDATE of commands that normally
use an argument to report status (TAKE_XPT, SET_KEY, SET_MIX) will
result in a generated status message when the state of any of their
respective arguments change.
For additional information concerning the UPDATE command, see the
Use of UPDATE setting.
12. The MUTE command clears all UPDATE commands.
13. The 6 character “R Message Block” timeout specified in RP113-1992 is
not currently supported.
14. Group Select specified in RP113-1992 is not currently supported.