Specifications

Chapter 2: Expanded Pro Tools|HD Systems
7
Expanded Systems Guide
DigiLink Connections
The DigiLink cable connects Pro Tools|HD cards and audio interfaces. A single Digi-Link connector carries up
to 32 channels of bidirectional audio information. These 32 channels are broken up into 2 groups of 16 chan-
nels: Group A = Channels 1–16, Group B = Channels 17–32.
The maximum number of DigiLink cables supported on a single system is ten (for session sample rates up to
96 kHz) or eight (for session sample rates of 176.4 kHz or 192 kHz).
 Use the 12-foot DigiLink cable included with each Pro Tools|HD card to connect the card to a Pro Tools au-
dio interface. The primary audio interface, which functions as the Loop Sync master for other interfaces in the
system, must be connected to the HD Core card. You can purchase optional DigiLink cables of differing
lengths (25-foot, 50-foot, and 100-foot), depending on the needs of your studio configuration.
 Use the 18-inch DigiLink cable, included with each Pro Tools|HD audio interface, when connecting a sec-
ondary Pro Tools|HD audio interface to the Expansion port of another Pro Tools|HD audio interface.
Figure 2. Two 96 I/Os, 32-channel
Figure 3. Three 96 I/Os, 48-channel
12-foot DigiLink cable
18-inch
Loop Sync cables
DigiLink
cable
HD Core or
Accel Core card
12-foot DigiLink cable
18-inch
Loop Sync cables
12-foot DigiLink cable
Loop Sync cables
TDM FlexCable
DigiLink
cable
HD Core or
Accel Core card
HD Accel card
or HD Process card