3
SETUP
All DDL12 parameters are adjustable using the Windows
®
95 'PC Control Software' and serial cable provided with the unit. The PC Control
Software provides programs for various ADVANTAGE
®
products, including the DDL12. The DDL12 program includes three different
control screens (Main, Logic Input & Button Definition & Configuration Options), which are described on the following pages. Once the
software is started (and Comm Port Configuration is set), the control screens are accessible through the drop-down menus at the top of the
opening screen. The Main screen appears whenever a DDL12 file is opened. Logic Input & Button Definition and Configuration Options
screens are then available from the Configure DDL12 menu. The File menu provides functions such as open, close, save, etc. The
Settings menu recalls the Comm Port Configuration screen. The Window menu arranges the active product screens. The Help menu
explains the available adjustments. To install PC Control Software: Select ‘Run’ from Windows
®
95 ‘Start’ menu, and enter A:\SETUP.
System Requirements: Windows
®
95 with 8M of RAM & 2M of available hard disk space (serial port required for ‘on-line’ operation).
MAIN SCREEN
The Main Screen is used to adjust the DDL12 input/output levels & delay times, as well as to store & recall the eight memory presets
.
Adjustments are made with the computer mouse (or keyboard). Levels are adjusted by dragging the corresponding ‘faders’ up or down.
Input Sensitivity adjusts for the proper input signal peak reference level by providing up to 24dB of attenuation, adjustable in 1dB steps.
The DSP Level meter will display the corresponding input signal level. For best performance, adjust Input Sensitivity so the DSP Level
meter shows occasional peaks in the yellow area,
but never to the red (top).
Output 1 & Output 2 provide delay & gain adjustments. Delay
time is shown in the window, with adjacent buttons providing the up/down adjustments. Left-clicking coarse buttons will change the delay
time in 1 milli-second increments. Left-clicking fine buttons will change the delay time in 21 micro-second increments. Delay time may also
be entered directly into the window, but will be rounded to the nearest available setting. Left-clicking msec allows delay times to instead be
entered & calculated in terms of distance measurements (inches, feet, centimeters, or meters). Left-clicking Bypass temporarily sets delay
for that output to minimum, but has no effect on input/output gain settings. Level provides gain adjustment for that output, but the range
will be affected by the Input Sensitivity settings. Left-clicking Unity will link that output Level fader to the Input Sensitivity fader, maintaining
a constant unity gain setting through the DDL12. Left-clicking a Preset button will recall the corresponding preset from non-volatile
memory. Left-clicking the Store button will open a drop-down menu for storing current settings in any of the Presets 1~8. Logic Inputs are
strictly indicators of remote on/off activity at the Logic Inputs. The title bar across the top of the Main screen will indicate the Device #, the
custom Device Name, and the model of product being controlled. The PC Control Software can operate ‘off-line’ (with no product
connected) by opening a ‘new’ file for the desired product. The Device # for ‘off-line’ files is assigned sequentially as a negative number.
NOTE: Distances should be measured in terms of the difference between direct and delayed sound sources, with respect to the listener
(i.e...direct source to listener = 200 feet; delayed source to listener = 20 feet; distance = 180 feet). Also, when sounds from the direct
source & delayed source reach the listener at roughly the same volume level, additional delay (approximately 10~30 milliseconds) may be
added to the calculated delay time. This added delay will produce what is known as the ‘Haas Effect’, which gives the listener the
impression that all sound is emanating from the direct source. This added delay should be fine-tuned by ear to achieve the desired results.
