• Sample User's Manual
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.The S - DMX Digital Audio System user Manual 527-028 Issue 3.CONTENTS S-DMX OPERATING INSTRUCTIONS System Overview Installation Operation Using the S-DMX THEORY OF OPERATION Overall Functional Description MAINTENANCE General Maintenance Trouble Shooting SPECIFICATIONS Electrical Dimensions Options APPENDIX A Board Edge Connector Details APPENDIX B Set-Up Procedures for MIDI Equipped S-DMX S-DMX FRONT PANEL.S-DMX.A flight case is available for the S-DMX if required. Flight cases which accommodate multiples of AMS Neve systems are also available.

Sample User's Manual

The unit is engineered to the same high standard as the rest of the DMX range and offers similar microprocessor controlled front panel facilities i.e.Installation The model S-DMX can be operated with a line input voltage of 110, 220 or 240 Volts, adjustable externally. Before connecting the equipment to primary power, check that the line voltage setting is correct (see the voltage setting on the back of the unit): if the line voltage is not specified assume, for safety, a line voltage setting of 240 Volts.All mains leads supplied with equipment manufactured at AMS Neve are wired in accordance with the European (I.E.C.) colour code. The code is as follows: BROWN LIVE BLUE NEUTRAL GREEN/YELLOW EARTH All power supply rails within the S-DMX are protected by current limiting and also against over voltage.Operation The input may be switched between two channel operation (stereo input) and single input, dual output operation (mono input using channel ‘a’ as source).

The two outputs may also be mixed if desired to create or enhance various effects. If the input is two channel and the outputs remain unmixed the stereo LED will illuminate to indicate true stereo operation.The selected channel may be ‘fired off’ in single shot mode by pressing the enter key ‘#’ and may be repeatedly triggered by multiple depressions. The message ‘tr.-A’ or ‘tr.-B’ will appear.

The pitch of the loop may be varied in a similar way to normal operation by pressing the ‘C’.The loop may also be read out on a ‘one-shot’ basis. This is accomplished by pushing the # key. After the # key has been pressed the edited loop will be read out once and will not be read out again until the # key is pressed again. The loop may now be read out continuously by pressing the ‘D’.When in the lock in mode the nudge buttons may also be used for loop editing. In this case the beginning and the end of the loop may be adjusted (i.e.

Increasing or decreasing the length of either end of the loop is possible, within the limits). Pitch shifting in the lock in mode is also possible.If more than four numeric characters are typed, or the user attempts to enter a delay, outside the limit of the unit an error message ‘Err’ will be displayed to warn the operator. The correct entry may then be typed. The above refers to normal operation mode.Using the S-DMX A digital delay line (DDL) as its name implies, is a device that receives a given signal at its input and after a defined lapse of time (programmed by the user) reproduces that exact same signal at the output.

The DDL, as in the case of the S-DMX, should not alter or modify the signal no matter what delay is programmed.When power is switched on, the computer is initialised and the output of the unit is governed by the last store location selected and also the last function selected. If the ‘D’ key is pressed followed by the ‘0’ key all store locations will be cleared. In real terms this means that outputs ‘a’.The case above is taken for simplicity, obviously the S-DMX is far more flexible than the example shows; the example is only used as a guide to the techniques involved. When using the S-DMX alone, mixing of the two delayed channels can be accomplished by use of the output mix control on the front panel of the unit.To remove 100mS from the beginning of the loop first press the ‘A’ key. When the ‘A’ key is pressed the present starting point of the loop (i.e. 0) will be displayed. Now enter the new start point in milliseconds (i.e.

Dmx 15-80s User's Manual Pdf Free

100); the ‘a’ channel identifier LED will flash until the splice point has been entered by pressing the # key.Pitch Change is available on both channel ‘a’ and channel ‘b’ and therefore the following notes will apply to both channels. Remember that any effect selected using the ‘C’ key will always be in addition to the programmed delay, and also that an inherent effect of the pitch shifting process is an inbuilt delay which varies continually.The AMS Pitch Changer employs a very fast microprocessor which examines the digitised musical signal within the memory and performs a number of tests to isolate two points in time which have the highest correlation with each other in terms of waveshape.

Dmx 15-80s User's Manual Pdf Converter

The pitch shift algorithm contained in the program memory uses this information in conjunction with the required pitch ratio to minimise the ‘glitch’.The pitch ratio has the following geometric progression: where n is the number of semitones above unison.