Handbook
50
Redbox User Handbook No 1
SYNCHRONISERS, DELAYS &
SILENCE DETECTORS
SYNCHRONISERS, DELAYS & SILENCE DETECTORS - RB-DS2
7
Front Panel Controls
All of the RB-DS2’s congurations can be accessed with the single front panel mounted
rotary control in conjunction with the vacuum uorescent display.
Fig 7-3: Front Panel CONTROL
Setting the Delay
To adjust the delay, lightly press the rotary CONTROL to enable the delay select mode. A
solid line will appear under the selected digit. To change the selected digit, turn the rotary
control. When congured for dual mono operation, the selection highlight will move
between left and right channel delay values. Once the required digit is highlighted, press
the rotary control to switch to delay edit mode. The highlight under the selected digit will
begin to ash indicating that delay edit mode is enabled. The value of the selected digit
can be changed, by turning the rotary control. When the selected digit is set to the required
value, press the rotary control again to return to the delay select mode. A dierent digit can
now be selected. If no further digit is selected, delay select mode will be disabled and the
selection highlight will disappear after 2.5 seconds.
Changes to the delay are implemented dynamically. If the selected delay value exceeds the
amount of audio data that has been stored, the analogue and digital outputs will be muted
until the required delay has been acquired. The audio will then be presented at the outputs.
In extended mode, where the memory card installed in the internal Compact Flash™ Storage
Card Slot is used, delay periods can be in excess of 1 hour. During acquisition of long delays
in extended mode, a progress bar is displayed to give an indication of when the audio
output will start. The size of the progress bar decreases as the delay is acquired.
The delay value that can be set cannot exceed the maximum delay for the selected mode.
For example, for an analogue input sampled at 96kHz, 24bit, using 25fps, the maximum
delay in frames for normal mode is 268 (see gures 4, 5 and 6 for maximum delay values).
C O N T ROL
SELE C T MENU
SE LE CT DELAY
HOLD
Selecting The Main Menu
The RB-DS2’s conguration options are accessed from the main system menu. To access
the main system menu, press and hold the rotary CONTROL for at least 1.5 seconds. The
menu structure is arranged in a multi-tiered format with several menu items providing
access to sub-menus. To select a menu item, turn the rotary control until the required item
is highlighted, then press the rotary control to select the item. Each conguration is shown
as a list of available options. The currently selected option will be shown with a tick along
side it. The last item shown in each menu is uCLOSE. Selecting close exits the system menu
and returns to the main display. In each sub-menu, the penultimate item shown is tBACK.
Selecting back displays the previous menu.