User guide

Comet Computer DAC User Guide
EXONet The EXONET input and output connectors are a proprietary interface that will allow
external EXOGAL expansion products to be added to the Comet. They allow for a
high speed digital interface, with control. They are not HDMI compliant, but should
not cause damage if they are mistakenly attached to a HDMI interface.
USB Charger The USB charger output is compliant with most common charging standards. The
output is current limited and auto senses the charging mode of the attached device.
Depending on the specific USB charging mode it is operating in, it can provide up to
2.1A of current.
Button When powered on with the volume screen displayed, a short press ( < 1second) will
cause a QR code to be presented on the main display and allow user to directly
browse to the EXOGAL support web page by using a mobile device with a QR code
scanning application. On this web page the user will be able to access all of the
available documentation and support material for the Comet.
WARNING: While the Volume screen is displayed, pressing and holding the button
for >2 seconds will reset the unit configuration to factory defaults.
WARNING: Do not press the button while the DAC is starting (ie: Before the volume
or standby screens are displayed.) This will place the unit into a special mode used
in manufacturing and you may cause the unit to become stuck in a mode that cannot
be repaired in the field.
Power The Comet is powered from an external power supply. It uses a 2.1mm x 5.5mm
power jack. The center is positive and shell is negative. The Comet requires 6 watts
of power for operation, plus 12 watts of power for the USB charger.
Appendices
Troubleshooting: Lock-up
If the EXOGAL Comet experiences a powerful static shock or sudden AC surge, it is possible to “lock-up”
the computer circuitry. A locked-up computer may result in erratic display, no output, and no response
to remote commands. If your EXOGAL Comet should lock-up, unplug the AC cord. Wait at least 30
seconds before re-plugging in the unit. If the unit still does not operate normally, contact your dealer.
Environmental Care
EXOGAL makes every effort to be an environmentally conservative company. We appreciate it if our
customers join our efforts. Please dispose of batteries in a manner that is environmentally responsible.
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