Operation Manual

6 Chapter 2: Front Panel
DL371 Audio System Engine
Operator Manual
sync source panel
This has three LEDs, one of which illuminates to indicate the
source of the clock as follows:
• internal - clock is sourced internally to the router.
• external (Word) — clock is sourced from the word clock
connector on the rear panel of the router at 96kHz; see
“Connector panel” on page 12.
• external (AES3) — clock is sourced from the AES3 connectors on the rear panel of
the router at 96kHz; see “Connector panel” on page 12.
system clock panel
This panel has a master and a slave LED, one of which will illuminate
to indicate whether the router is audio synchronisation master or
slave.
Ethernet tunnel panel
The Ethernet control panel has a green LED, which has three states of
illumination to indicate the following:
• Off = not connected.
• On = connected.
• Flashing = active.
psu panel
This panel monitors the three supply
voltages and the three voltage rails.
Each of the three LEDs in the top row
represents a PSU. They illuminate when
their respective PSU is supplying power to
the unit after it has been switched on via
the D.C. POWER ON switch. During
operation, at least two of the PSUs must be
supplying power to the unit.
The bottom row of LEDs represent the three
voltage rails (+5V, +3.3V, and +12V),
which are common to each PSU. The LEDs illuminate to show that their respective rail
is live. When the unit is powered, all three LEDs should be illuminated; if not, see
“Voltage rail failure” on page 21.
Rear panel of
DL371 Audio
Voltage rails
psu section
(front panel)