Grass Valley Maestro Master Control Reference Manual v.2.4.0 - Manual (Page 52)

52 MAESTRO — Automation Interface Protocol Technical Reference Manual
Section 4 — Definition of Supported Saturn Commands
FTBLK (Fade to black)
Hex definition Mnemonic
78 FTBLK
Command format:
FTBLK
Query format:
READ FTBLK
Reply format:
IFRE FTBLK <off_on_null>
Use applicable with UPDATE:
Yes
Argument definitions:
<
off_on_null>
0 = No change IF_NULL
2 = Off IF_OFF
3 = On IF_ON
Maestro applicability:
As stated