Specifications
D-Command Guide74
Transport Mode Switches
The Transport Mode switches are used to put the Pro Tools 
transport in the various playback and record modes. 
Pro Tools Online Switch
The Pro Tools Online switch toggles the Pro Tools online 
state. The online state is mirrored in the Online button in the 
Pro Tools Transport window.
While Pro Tools is online and waiting for time code, this 
switch flashes. When time code is received, this switch lights 
continuously. 
Machine Switch
The Machine switch is not currently enabled.
Transport Master Switch
WIth Digidesign Machine Control, the Transport Master 
switch toggles the Pro Tools transport master between “Trans-
port = Pro Tools” and “Transport = Machine” (in Serial Deck 
Control mode) or between “Transport = Pro Tools” and 
“Transport = Remote” (in Remote mode). 
Loop Playback Switch
The Loop Playback switch toggles Loop Playback mode in 
Pro Tools. When Loop Playback mode is active, this switch 
lights. The Loop Playback state is mirrored in the Play button 
in the Pro Tools Transport window.
QuickPunch Switch
The QuickPunch switch toggles QuickPunch record mode in 
Pro Tools. When QuickPunch mode is active, this switch 
lights. The QuickPunch state is mirrored in the Record button 
in the Pro Tools Transport window.
TrackPunch Switch
The TrackPunch switch toggles TrackPunch record mode in 
Pro Tools. When TrackPunch mode is active, this switch 
lights. The TrackPunch state is mirrored in the Record button 
in the Pro Tools Transport window.
Audition Switches
The Audition switches are used to activate pre-roll and 
post-roll in playback, define selection in and out points, and 
trigger automatic playback of ranges 
Audition Switch
The Audition switch toggles Audition mode on and off. When 
Audition mode is on, this switch lights. 
When Audition mode is on, you can quickly listen to either 
the start or end of a selection, with or without pre-roll or 
post-roll, by pressing the following switches:
Pre-Roll Switch Plays audio starting at the pre-roll point up to 
the beginning of the selection. 
Mark In Switch Plays audio starting at the selection start 
through the length of the post-roll amount.
Mark Out Switch Plays audio back-timed from the selection 
end by the pre-roll amount.
Post-Roll Switch Plays audio starting at the end of a selection 
through the post-roll amount. 
Pre-Roll and Post-Roll Switches
When Audition mode is off, the Pre-Roll and Post-Roll 
switches toggle pre-roll and post-roll playback on and off in 
Pro Tools. When pre-roll or post-roll is active, the correspond-
ing switch lights.
When Audition mode is on, the Pre-Roll and Post-Roll 
switches play a range of audio around the current Edit selec-
tion.
Transport Mode switches
Pro Tools Online
switch
Machine
switch
Loop Playback
switch
Transport Master
switch
TrackPunch
switch
QuickPunch
switch
Audition switches
Audition
switch
Pre-Roll
switch
Mark In
switch
Mark Out
switch
Post-Roll
switch










