Gilderfluke&Co 16 Bit CD-Quality Digital Audio Systems User Manual

Page 56

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spiel. This allows the SMPTE triggers to be handled at a high priority interrupt level for the greatest possible
accuracy. If that frame is missed for any reason, or if a bit is missed which makes the SMPTE reader do a
search for the sync word after it is found in the table but before it is played, the sound will not be played.
If the SMPTE is stopped cleanly after an entry has been found in the table but before it has been played,
and then restarted cleanly at a different time, the spiel will play at the selected frame regardless of what
the new time is. The odds of this ever actually happening in the field are VERY small.

For those of you who want to know exactly when the sounds are triggered: It is two bits into the SMPTE

sync word that follows the frame upon which the sound is to be triggered. The SMPTE triggers are han-
dled at an interrupt level, and are the most time-accurate triggers available on these repeaters.

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ÒaÓ

Alter Entry:

This command allows you to change any of the entries in the table. This command will prompt you

for each of the values it needs.

Entries to this table must be made consecutively. Any empty entry will be interpreted as the last entry

in the table, even if more entries can be found further on. The values of each of the entries can be in
any order.

ÒmÓ

More.....:

This command allows you to select from the other menus:

Main Menu. This brings you back to the main menu.

Triggers. If mono ROMs are installed, it will ask if you want to setup the Left or Right Triggers.

SMPTE Setup. This selects this menu.

Clock. This is where you setup the eight possible schedules, tolls, and set the clock. This menu
is available only if the Real Time Clock option has been installed on the AB/DR-3000.

Volume. This is where you set up the Digital Audio Bus and volumes.

Status Outputs. This is where you setup what the two status outputs do.

Diagnostics. This displays the status of the mutes zones, switch, analog, and DMX inputs.

ÒoÓ

Reload Defaults:

This command is used to reload the default conditions for the variables set on the SMPTE Trigger

Menu of the AB/DR-3000. All of the defaults for all of the menus can be loaded from the front panel by
depressing both the up and down keys simultaneously as power is first applied to the AB/DR-3000.

ÒxÓ

eXit Setup Mode:

This command is used to exit the setup mode. If you hit this command in error, hitting an <ESC>ape

key will get you back to the menu.

For compatibility with other products that might be on the same RS-422 serial network, this com-

mand asks you to enter a ÔYÕ or ÔNÕ. This lets them know that the setup mode has been exited on this
card. If you hit this command by mistake, then you can hit the <ESC>ape key to get back to where you
were before.

All other AB/DR-3000 and Brick Brains in the same serial network have their serial ports disabled while

any card in the system is in setup mode. This is the only command to which they will respond. After the
initial 'X', all the other cards wait for a 'Y' or 'N' before they will start accepting other serial commands
again. If you find that you are having trouble communicating with any of the cards in the system, try en-
tering an ÔXNÕ to trick it into thinking you have exited the configuration mode.

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