Specifications
Chapter 2: HD MADI Overview 5
chapter 2
HD MADI Overview
HD MADI Front Panel
HD MADI has the following front panel
features:
Power Switch and LED Ring
This button turns HD MADI on and off. The LED 
ring around the power button will light green or 
orange to indicate the system status:
Green LED Ring Indicates that the unit has pow-
ered up successfully and is connected to an ac-
tive Pro Tools|HD system. 
Orange LED Ring Indicates that the unit has 
power, but the computer it is connected to is 
shut down.
Sample Rate
These LEDs display the current sample rate of 
the internal crystal oscillator for HD MADI: 
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 
or 192 kHz. The sample rate is set when you cre-
ate a new session, and can be changed in the 
Pro Tools Hardware Setup or Playback Engine 
dialogs if no session is open.
Loop Master LED
The LOOP MASTER LED indicates which 
Pro Tools audio interface is the master Pro Tools 
peripheral. The Loop Master LED will be contin-
uously lit on the current Loop Master peripheral 
only, and unlit on all other peripherals. (Only 
one Pro Tools peripheral can be Loop Master at a 
time.) The Loop Master LED will always be lit 
with a single interface.
HD MADI front panel










