Gilderfluke&Co old MACs 8 bit Digital Audio System - Manual (Page 29)

The Digital Delay feature allows the start time of any digital audio track to be delayed anywhere from
approximately 1/35th of a second to about 1/2 an hour from the time it is given a start command. The
delay will occur any time a start command is received after a Repeater has received a reset command.
In many applications this allows a single start signal to be used for a number of the Digital Audio
Repeaters. The actual start of the spiels is then adjusted in the field as needed. The 'DELAY' LED on the
front of each Digital Audio Repeater / Mixer shows when it is in delay mode prior to starting its spiel.
When a Repeater is in looping mode, the delay will be inserted between each iteration of the
playback loop. In normal looping mode a single spiel is played over and over again. If the LOOP ALL
option is on, then all of the spiels on the card will be played sequentially, with the delay inserted
between each one.
Both the 'start' inputs and 'running status' output for the Digital Audio Repeater are optically isolated
from all other parts of the system. Connections are made to them through four screw terminals for each
card on the back of the motherboard. They can be configured to run either from the isolated 'Dirty'
power supply or from external power. Eight additional inputs are available through the AUX PORT on
each card. These are used to select specific spiels from manual push buttons or switches. The AUX PORT
can be configured to select 'one of eight' with individual switch closures to each input or 'one of 255'
with a binary spiel select to the inputs.
The Repeater checks both the rising (switch closure) and falling (switch opening) edges of each
input. This allows you to configure a Repeater to do one action on one edge of a switch opening or
closing, and then take a different action on the opposite edge. An example of this feature would be if
you told the Repeater to start on finding a closure on one of the inputs, and then stop when the same
input is opened again. The start and AUX PORT inputs can be configured to tell the Repeater to do any
of the following things:
1) MUTE AUDIO
2) HALF MUTE AUDIO
3) UN-MUTE AUDIO
4) RESET REPEATER TO START
5) STOP REPEATER IMMEDIATELY
6) START REPEATER
7) START REPEATER LOOPING A SPIEL
8) STOP REPEATER AT END OF CURRENT SPIEL
There are several options which you can select for early start and loop commands. These are start or
loop commands which come while the Repeater is still playing the last spiel. You can tell the Repeater
to:
1) Ignore early starts.
2) Jump immediately to the beginning of the current spiel.
3) Jump immediately to the beginning of the next spiel.
4) Ignore the early start for now, but save and do it as soon as the current spiel is done.
The 'START' LED on the front of each Digital Audio Repeater / Mixer card is actually a combination of
the two opto-isolated start inputs. This shows the actual start inputs' status as it is seen by the Digital
Audio Repeater, and not a processed version of them. The 'MANUAL START' button on the front of each
Digital Audio Repeater / Mixer card feeds directly into the Digital Audio Repeater's circuitry, and so
doesn't light the 'START' LED. Aside from this one detail, it acts just like any input from the 'START' input on
the back of the motherboard.
The 'RUNNING' LED on the front of each Digital Audio Repeater / Mixer shows when each is currently
running.
G ILDERFLUKE & C o . ¥ 205 S OUTH F LOWER S T . ¥ B URBANK , C ALIF . 91502-2102 ¥ 818/840-9484 ¥ FAX 818/840-9485
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