Gilderfluke&Co 16 Bit CD-Quality Digital Audio Systems - Manual (Page 15)

the neighbors, the hours of operation can be set for each day of the week.
There are eight schedules which are used to select when specific messages are played from the real
time clock. The first seven schedules are for each of the seven days of the week. The last ÔweeklyÕ sched-
ule is used for sounds you want to play at the same time seven days a week
10 . Operating hours can be
set for the weekly schedule, or individually for each of the seven days of the week.
An example of the real time clockÕs use would be in a clock tower that uses a ÔWestminsterÕ chime.
This plays a slightly different chime on each quarter hour and tolls the full hours. The operating hours are
from 6:00 AM to 12:00 Midnight. Every day of the week, a ÔspecialÕ chime sounds each day at noon,
with other ÔspecialsÕ scattered throughout the day. On Mondays through Fridays, a ÔspecialÕ plays at 5:00
when the last work shift of the day ends.
To support ÔregulatorÕ style clocks, the AB/DR-3000s can be configured to pulse the Status Outputs
once per second, minute, hour, day or year. Regulator clocks typically use a single pulse every minute
to advance the minute hand, with a special pulse once each twenty-four hours to synchronize all the
clocks.
The clock can be set through the serial port or the front panel of the AB/DR-3000. Configuring the
schedules must be done through the AB/DR-3000Õs serial port using any computer or terminal.
When the clock is set, the AB/DR-3000 gives you the option of automatically adjusting for Daylight
Savings Time. If this option is used, then the clock will automatically ÔSpring forwardÕ on the first Sunday of
each April, and ÔFall backÕ on the last Sunday of each October. When the time is displayed on the Main
Menu of the AB/DR-3000, a ÔDSTÕ will appear before the time to indicate that it is currently in Daylight
Savings Time.
RS-422 S ERIAL P ORT :
The RS-422 Serial Port is the main method of communicating with the AB/DR-3000s. It is used for
doing virtually all the AB/DR-3000's configuration, and can be used for triggering and making dynamic
adjustments. Full details on the care and feeding of the RS-422 Serial Port can be found in the section of
the manual on Serial Port Commands.
Any standard computer can be used to talk to the AB/DR-3000s through its serial port. Modern com-
puters, like AppleÕs Macintosh computers come with RS-422 compatible ports already built in. Older com-
puters, like all IBM compatibles, have RS-232 serial ports on them. These can be used to communicate
with only a few AB/DR-3000s at a time with only a simple adapter cable. If you need to talk to several
AB/DR-3000s simultaneously, or over a distance of more than a few feet, you will need to add a RS-232
to RS-422 converter to your serial port.
The DR-3000 Serial Ports are usually connected with other Digital Audio Repeaters and Animation
Systems in a multi-drop network. Connections to other DR-3000s within the same card cage are made
through the card cageÕs backplane. Adjacent card cages can be interconnected through the fifty posi-
tion Digital Audio Bus connector, or they can be run independently. Although they can be used on a se-
rial network, AB-3000s tend to be used in stand-alone applications where they are typically the only de-
vice on their own very small network.
Commands are directed to a specific AB/DR-3000 or other piece of equipment located on the net-
work by using the deviceÕs address. This is the one setting that must be made before a AB/DR-3000 is ac-
cessed as an upstanding member of the multiple drop serial port community. This will usually require
powering up the card to be addressed by itself so that its address can be changed. When any AB/DR-
3000 is powered up, it will display its current address setting for a few seconds on it front panel display.
When operating with the Intelligent Public Address System, the MA-100 PA Master acts as a ÔbridgeÕ
between any external computer or terminal and the rest of the system. All serial port commands are sent
through the MA-100, which also uses its serial connection to all the AB/DR-3000s for all of the public ad-
dress commands.
F RONT P ANEL A DJUSTMENTS AND I NDICATORS :
Most of the minor adjustments which can be made to the AB/DR-3000 can be set through the front
panel on each unit. At your option, any or all of these adjustments can be enabled or disabled on the
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10 Or you can set the weekly schedule for Monday through Friday.