Grass Valley Switcher Products User Manual

Page 71

Switcher Products — Protocols Manual71

Editor Commands

Learn and Recall E-MEM Register (DA and DB) Commands

The Learn E-MEM Register command is a command that causes the Effects
Address state data in the specified E-MEM register to be stored or
“learned” into the E-MEM register specified in the Mode byte. This
command has the same effect as manually pressing the LRN button and
then selecting an E-MEM register number (0 through 99). The command
also supports learning an Effects Dissolve into a register.

The Recall E-MEM command, when sent, causes the state data in the spec-
ified E-MEM (Effects Memory) register to be recalled, thus changing the
current state of the switcher to the stored settings for the given effects
addresses. This command performs the same action as manually recalling
an E-MEM register number of 0 through 99.

Control bits may be set to force or inhibit the recall of the register as an
effects dissolve. Additionally, control bits may be used to force or inhibit
the running of an effect which contains multiple keyframes, and the recall
of learned enables prior to the recall of the register.

Note

Do not send this command more than once per video frame. Also note that a
new recall command received by the switcher will override any recall that is
still in progress for an effects address.

Table 64. Learn and Recall E-MEM Register Commands

Function

Byte

Count

Effects

Address

Command

Code

Message

Learn E-MEM Register

Mode, Register Number

Mode, Register Number, 2-byte Bit-Mask, 4000 Format

Mode, Register Number, 2-byte Bit-Mask, Switcher Format

Recall E-MEM Register

Mode, Register Number

Mode, Register Number, 2-byte Bit-Mask, 4000 Format

Mode, Register Number, 2-byte Bit-Mask, Switcher Format