User's Manual

Audiovox Home Satellite Radio Tuner
SIRIUS Satellite Radio, Inc. Page 22 of 35 Confidential
front controller. When displaying time information, the Shuttle simply uses the local time information
provided by the latest time update message.
An internal real-time clock shall be used to provide a time reference when the unit is not receiving
satellite data, or when the unit is connected to power but not turned on. This internal real-time clock
function shall be generated in software in the front board micro-controller using a 32.768khz tuning
fork crystal typically used for clock applications for a time reference. This internal real-time clock
shall be automatically synchronized with the correct local time when time information is available
from the satellite data stream. When displaying time information and the satellite data stream is not
available, the Shuttle uses the local time maintained by the internal real-time clock.
When the Shuttle unit is not powered, time information in the local real-time clock may be lost. If
time information is lost, the clock should not display time information and programmed alarms should
not be triggered until the local real-time clock has been re-synchronized with time information from
the satellite.
6.2.8.2 Clock
When entering this menu option, the user will be able to setup the clock that is shown on the default
display based upon the format desired, and the time zone for which they reside. The clock data is
provided via the Sirius stream, and will update based upon the signal received, and is dependent on
the unit being powered up. When the unit is off, but still connected to power, the clock data will be
internally generated from a software implemented real-time clock.
Top line displays the text, “Clock”. The following adjustments shall be offered:
• Format
• Time Zone
• Daylight Savings Time
The highlight bar defaults to the first (top) in the list. Pressing a channel Up/Down button shall move
the highlight bar up/down through the choices. When the highlight bar reaches the last in the list and
the channel Up button is pressed, the highlight bar shall move to the first in the list. When the
highlight bar reaches the first in the list and the channel down button is pressed, the highlight bar
shall move to the last in the list. Pressing the Select button enters the selected submenu. Pressing
the MENU button returns to the Time Features submenu.
Format - Upon entering this mode, moving the encoder knob will toggle between the following
formats:
• 12 Hour (Factory Default)
• 24 Hour
The highlight bar shall default to the current setting. By pressing the select button (to modify the
setting) or pressing the MENU button (no change in setting) shall return to the Clock submenu.
Time Zone - Upon entering this mode, pressing a channel Up/Down button will toggle between the
following time zones
• (GMT -9:00) Alaska
• (GMT -8:00) Pacific
• (GMT -7:00) Mountain