Operation Manual

4 Chapter 2: Front Panel
DL451 Modular I/O
Operator Manual
psu panel
This panel monitors the supply voltage. The panel LEDs
illuminate to show that the voltage rails are active. There are
five yellow LEDs, each one representing a particular voltage
supply, that is, +18V, -18V, +5V, +3.3V and +48V.
Ethernet control panel
The Ethernet control panel has two green LEDs, X and Y, which have
three states of illumination to indicate:
• Flashing - active master.
• On - connected.
• Off - not connected.
AES50 audio panel
In the AES50 panel, each X and Y channel has a green ok LED and red
error LED. These illuminate to indicate that the communications to these
channels is ok or that there is an error.