User manual BIAMP DDL12

[. . . ] ADVANTAGE® DDL12 Digital Delay Line Operation Manual ® Biamp Systems, 10074 S. W. (503) 641-7287 http://www. biamp. com 5/5/98 an affiliate of Rauland Borg Corp. DDL12 TABLE OF CONTENTS Front & Rear Panel Features Setup Logic Inputs RS-232 Control Applications Specifications & Block Diagram Warranty o variable input & output levels with metering & bypass mode o broad delay range useful for room delay or driver alignment o distance calculations & `automatic' unity gain for easy setup o 48kHz sampling rate with 16-bit sigma delta converters o 64x oversampling A/D (in) & 128x oversampling D/A (out) o eight non-volatile memory presets store/recall delay settings o programmable logic inputs for remote control via switches o no manual controls on chassis, to help prevent tampering o controls & indicators provided by software graphic interface o RS-232 serial port & Windows 95 programming software o incorporates AES recommended grounding practices o marked and UL / C-UL listed power source ® INTRODUCTION pg. 10 & 11 o 1-in/2-out DSP-based programmable dual-tap digital delay pg. 12 o balanced input & outputs on plug-in barrier strip connectors The ADVANTAGE DDL12 Digital Delay Line is a programmable DSP-based 1-input by 2-output digital delay. [. . . ] From the factory, Logic Inputs 1~8 are programmed to recall presets 1~8 respectively. However, using the Logic Input & Button Definitions screen, each Logic Input may be assigned different `recall preset actions'. Left-clicking on a numbered button will select that Logic Input to be defined. Left-clicking on Preset Action will open a drop-down menu of the available recall preset actions. Left-clicking the desired recall preset action will then assign that action to the currently selected Logic Input. Since Logic Inputs are controlled by switches, contact-closures, etc. , each Logic Input may be assigned certain recall preset actions to perform when the switch is `opened', and different recall preset actions to perform when that same switch is `closed'. Left-clicking on Echo Character opens a drop-down menu, which allows the `echo' character for the selected Logic Input to be changed. This is the RS-232 ASCII character which will be transmitted via the Serial Port whenever that Logic Input is switched. From the factory, no echo characters are assigned to Logic Inputs 1~8. Changing the echo character is used primarily for customizing remote control commands amongst various RS-232 controlled products within a system (see RS-232 Control on pg. NOTE: Unlike other remote controls, the DDL12 Logic Inputs do not include a `repeat' function. Therefore, a Logic Input in an `opened' or `closed' state will not continuously repeat an echo character via RS-232. Although the DDL12 does not accept infrared or wall-mount remote controls itself, it ® can still receive echo characters (via RS-232) from other ADVANTAGE products which are utilizing these types of remote controls. From the factory, Remote Control Buttons have equivalent ASCII characters permanently assigned to them (see RS-232 Control on pg. Therefore, recall preset actions can be assigned to Remote Control Buttons in the same way they are assigned to Logic Inputs. Leftclicking on Clear opens a drop-down menu, which allows recall preset actions to be cleared from the selected Logic Input (or all Logic Inputs). From the factory, Logic Inputs 1~8 are programmed to recall presets 1~8, respectively. However, each Logic Input may be assigned different `recall preset actions'. , using the PC Control Software and serial cable provided with the DDL12 (see Setup on pg. Since Logic Inputs are controlled by switches, contact-closures, etc. , each Logic Input may be assigned two functions (one for switch `closed' and one for switch `open'). Logic Inputs have the following pin assignments (right-to-left & top-to-bottom): Pins 1~8) Logic Inputs 1~8; Pin 9) Ground. 5 4 3 2 1 9 8 7 6 pin #1 pin #2 pin #3 pin #4 pin #5 = = = = = Logic Input 1 Logic Input 2 Logic Input 3 Logic Input 4 Logic Input 5 pin #6 pin #7 pin #8 pin #9 = = = = Logic Input 6 Logic Input 7 Logic Input 8 ground logic inputs When nothing is connected to a Logic Input, an internal pull-up resistor keeps it at a `high' idle state (+5. 0 VDC). The Logic Input is activated when its input goes `low' (less than +0. 8 VDC), and is de-activated when its input goes `high' (greater than +2. 4 VDC). A Logic Input is controlled in one of three ways: 1) Use an NPN style `open-collector' logic output from an external device (such as an ® ADVANTAGE PMX84 or DRC4+4) to short the Logic Input to ground. 2) Use a switch, relay, or other contact-closure (such as from a third-party controller) to short the Logic Input to ground. [. . . ] Serial Port Data Communications Parameters: The DDL12 communicates through the Serial Port at the factory selected rate of 9600 bits per second, with 8 data bits, 1 stop bit, and no parity. The DDL12 utilizes a subset of the standard 7-bit ASCII character set. The eighth data bit of each character (the most significant bit) should always be 0. The computer should not be set for either hardware (DTR) or software (XON/XOFF) flow control. [. . . ]