AMS Neve S - DMX страница 26 Скачать руководство пользователя

Страница: 26 / 33

Trouble Shooting

Before embarking on the checking procedures outlined below, ensure that all the power

supplies are at their correct potential and that all the fuses are intact; also check the input

wiring external to the S-DMX for shorts.

Possible causes are listed in order of probability and therefore should be checked in strict

order.

SWITCH THE POWER OFF WHEN REMOVING OR INSERTING BOARDS

and please

take extreme care in ensuring that the cards are replaced in the correct slot with the

correct orientation.

If you are not sure, please contact AMS Neve or your nearest service representative.

Symptom

Possible Cause

All level LEDs on permanently.

-15V supply fault: Check - 15V fuse.

Loss of output on one channel only with

input LEDs not functioning for that

channel.

1. Input short circuit on inoperative channel:

Check input cable then the internal wiring of the

unit.

2. Swap input cards.

Loss of output on one channel only with

input LEDs functioning correctly.

1. Output short circuit on inoperative channel:

Check output cable then the internal wiring of the

unit.

2. Swap the DAC cards.

Unit giving glitches at regular intervals

on one channel only.

Possible defective RAM card:

swap RAM cards with other channel.

Displays showing random data.

possible fault on +5V supply rail:

m5V rail.

Intermittent output on one channel.

Faulty RAM board.

Constantly distorted output.

1. DAC board: distortion will be isolated to

associated channel.

2. ADC board.

3. Input board: distortion will be isolated to

associated channel.

S-DMX User Manual

Page 24

Issue 3

Содержание S - DMX

Страница 1: ...ilty is taken by us for inaccuracies errors or omissions nor any liability assumed for any loss or damage resulting either directly or indirectly from use of the information contained within it AMS NEVE INC NEW YORK TEL 1 212 965 1400 FAX 1 212 965 3739 AMS NEVE INC HOLLYWOOD TEL 1 818 753 8789 FAX 1 818 623 4839 RUPERT NEVE CANADA INC TORONTO TEL 1 416 365 3363 FAX 1 416 365 1044 AMS NEVE PLC BIL...

Страница 2: ...PERATION 19 Overall Functional Description 19 MAINTENANCE 23 General Maintenance 23 Trouble Shooting 24 SPECIFICATIONS 25 Electrical 25 Dimensions 26 Options 26 APPENDIX A 27 Board Edge Connector Details 27 APPENDIX B 29 Set Up Procedures for MIDI Equipped S DMX 29 S DMX FRONT PANEL 31 S DMX User Manual Issue 3 Page i ...

Страница 3: ...S DMX S DMX User Manual Issue 3 Page 1 ...

Страница 4: ...S DMX User Manual Page 2 Issue 3 ...

Страница 5: ...le line input channel a feeds both delay lines A switch is also provided to allow the outputs to be mixed for special effects An important feature is the use of Nudge Buttons These buttons when used will cause the delay to sweep up or down in steps of only 25µS making the sweep virtually silent Nudging of the pitch ratios and loop extremities is also available A facility for switching channel a in...

Страница 6: ...ap will give access to both the voltage selection barrel and the mains fuse ä The voltage selector should now be removed and replaced so that the correct voltage setting is facing ä Once the correct setting has been selected the flap should be replaced ä The mains lead may now be replaced The outputs of the S DMX are balanced electronically and are compensating This means that the output behaves e...

Страница 7: ...tor connected across that power rail is activated blowing the fuse and protecting the unit s electronics It should be noted that this may very occasionally happen when no fault is present but a sharp and possibly dangerous mains surge has occurred There are four fuses contained within the S DMX All of which are immediately accessible on the rear panel of the unit Spare fuses are included in the pa...

Страница 8: ...the two input control knobs an indication of the signal levels is given by traffic signal light emitting diodes LEDs The red LEDs are illuminated 6 dB before clipping the yellow LEDs 12 dB and the green LEDs 18 dB In normal operation with a signal present the input levels should be adjusted so that the green LEDs are illuminated all the time The Dual Lock In Function The S DMX incorporates two ind...

Страница 9: ...ow enter the new start point in milliseconds the a channel identifier LED will flash until the splice point has actually been entered i e until the key has been pressed To remove a portion from the end of the loop first press the B key When the B key is pressed the current loop end position will be displayed The new loop end point must now be keyed in again in milliseconds the b identifier LED wil...

Страница 10: ...unit to display 6 400 or maximum value of lock for that particular channel At this point 0 should be entered Pressing the A key again will result in the display still reading zero but LED mark will be illuminated 6 400 or whatever value required should now be entered The unit is now in reverse loop mode and can be triggered as before that is with the audio trigger or the hash key It should be note...

Страница 11: ...se entry into the display only and will not affect the programme until the data is entered into the unit by depressing the key Until the is depressed the channel identifier LED will flash indicating temporary data The display only reflects the contents of the DDL once the key has been depressed and the channel identifier LED has stopped flashing Key This key is used for decimal point entry when us...

Страница 12: ...on section for special use Power Switching and Reset When the unit is first switched on or if reset is depressed the unit will be initialised Initialising the unit does not clear any of the store locations It does however re start the microprocessor and therefore the display and the output will reflect the contents of the last store location selected and also the last function selected If you wish...

Страница 13: ...required by adjusting the relevant controls on the front panel It is obvious that a great deal can be accomplished using the S DMX besides simple delay and the following paragraphs have been written to help the studio engineer get the best possible use from the unit Original Settings With the power switched on and a signal present ensure that both input level control knobs are set correctly i e en...

Страница 14: ...th respect to the original first depress the B key The b LED will now illuminate indicating that the display now reflects the contents of channel b To delay the output follow the procedure as outlined for channel a this time the b LED will flash until the key is depressed Storing Delays If the D key is depressed the display will indicate the current store in use at the present store 1 Str 1 Let us...

Страница 15: ...ed by setting the depth control to 9 and the speed control between 2 and 3 as the delay setting is increased however the depth setting will have to be decreased to retain a reasonable ADT effect VCO The vibrato effect created by the vco can if used properly enhance the effect of certain instruments and is a useful tool in its own right Controlled Flanging The following method can be used if flangi...

Страница 16: ...lash until the enter key is pressed Notice that the end of the loop is 35mS less than the RAM storage size would suggest in our case 1 603 Seconds and not 1 638 Seconds This is the amount of time taken to complete the splicing operation In fact after entry of a start or finish point for the loop the high speed microprocessor analyses the frequency and amplitude content of the subsequent 30mS for t...

Страница 17: ... and c LEDs to stop flashing and the display to read 0 500 indicating an octave decrease in pitch on channel a If we now look at the contents of channel a this is accomplished by depressing the A key the letter H will be flashing on the left of the display indicating that the original and output a are not in unison If a delay is now required on channel a it can be programmed in exactly the same wa...

Страница 18: ... pitch ratios other than 1 01 Notes 1 Interesting arpeggio effects can be obtained by programming delays longer than 200 300mS and applying feedback to just short of instability This effect is especially useful if musical intervals are programmed as the pitch shift such as 1 26 When applying feedback whilst pitch changing care should be taken when shifting the frequency down by significant amounts...

Страница 19: ...638 27 7195 B 440 2 440 1122462 12 2 493 8833 29 3678 C 440 2 440 1189207 12 3 523 2511 31 1141 C 440 2 440 1259921 12 4 554 3652 32 9644 D 440 2 440 1334840 12 5 587 3296 34 9244 D 440 2 440 1414214 12 6 622 2540 37 0011 E 440 2 440 1498307 12 7 659 2551 39 2014 F 440 2 440 1587400 12 8 698 4565 41 5324 F 440 2 440 1681793 12 9 739 9889 44 0020 G 440 2 440 1781798 12 10 783 9909 46 6185 G 440 2 4...

Страница 20: ...e Do the major scale we are all so conversant with first feed in a constant signal possibly a sine wave to the pitch change channel ensure that the pitch ratio in store 1 is 1 Now set store 2 to 1 122 store 3 to 1 26 store 4 to 1 335 etc etc culminating in entering 2 in store 8 If we now return to store 1 and keep the D key depressed whilst thumbing through the eight store locations in sequence th...

Страница 21: ...llator vco The ADC conversion command is then decoded and the resulting response conversion complete is used to control the latching of the correct exponent for that sampling period The sampled analogue output from the sampler card is fed into the ADC via a buffer amplifier Timing signals from the sampler card cause a conversion to be initiated The twelve bit result is latched into a set of regist...

Страница 22: ...l signal from the RAM is converted back to analogue form on the DAC boards 2 off one for channel a and one for channel b These cards accept the mantissa and exponent digital input perform shift left operations on the mantissa dependent on the value of the exponent multiplication and reconstitute the original signal by means of the DAC device on each board The DAC outputs is buffered and filtered t...

Страница 23: ...n to and from the central processor is accomplished via the display board which contains the drive for the 7 segment display together with the display itself and the Nudge buttons It is driven by I O ports on the microprocessor board and is connected by ribbon cables S DMX User Manual Issue 3 Page 21 ...

Страница 24: ...S DMX User Manual Page 22 Issue 3 ...

Страница 25: ...all the printed circuit boards should be cleaned using dry air at low pressure psi If grease is to be removed use Arklone F or Freon TF and remove grime with clean dry air at low pressure Clean the front panel with a soft cloth dampened with a mild solution of detergent and water DO NOT USE ARKLONE or FREON ON THE DISPLAY FILTER as this will cause damage Only high quality heavily gold plated edge ...

Страница 26: ...eck 15V fuse Loss of output on one channel only with input LEDs not functioning for that channel 1 Input short circuit on inoperative channel Check input cable then the internal wiring of the unit 2 Swap input cards Loss of output on one channel only with input LEDs functioning correctly 1 Output short circuit on inoperative channel Check output cable then the internal wiring of the unit 2 Swap th...

Страница 27: ...n 0 035 at 1 kHz full output Dynamic Range 90 dB 15 bit equivalent Frequency Response 20 Hz to 18 kHz 3 dB 0 dB Input connectors Two XLR 3 31 female Output connectors Two XLR 3 32 male Power consumption 80 VA maximum Power requirements 110 220 240 VAC adjustable Power connector Standard IEC mains connector Nudge Nudge control resolution 25µs Nudge rate approximate 2ms Second VCO VCO control speed ...

Страница 28: ... on As the units are regularly updated to provide new functions and take advantage of newer technologies these specifications are subject to change without notice Dimensions U Width mm inches Depth mm inches Height mm inches Approx Weight kg lbs 2 480 19 310 12 89 3 11 24 Options Channel A B 6 5 6 5 seconds Channel A B 13 6 5 seconds Channel A B 13 13 seconds Channel A B 19 5 6 5 seconds Channel A...

Страница 29: ... 3 Page 27 FACING REAR FACING REAR AA Component side on edge connector A AB Solder side on edge connector A BA Component side on edge connector B BB Solder side on edge connector B With component side facing and the edge connectors on the left the following applies ...

Страница 30: ...S DMX User Manual Page 28 Issue 3 ...

Страница 31: ...Press middle C on your keyboard and the S DMX display will read 1 000 Press the ENTER key 8 Press the C key on the keypad followed by B Channel B will then be ready for calibration The B and C indicator LEDs then light up and CAL is displayed 9 Press middle C on your keyboard and the S DMX display reads 1 000 Now press the ENTER key twice NOTES a The parameters assigned to the S DMX are retained o...

Страница 32: ...S DMX User Manual Page 30 Issue 3 ...

Страница 33: ......

Результаты поиска

Содержание S - DMX

Отзывы:

Похожие инструкции для S - DMX

Бренды по названию

Популярные бренды

AMS Neve S - DMX, Руководство пользователя

Результаты поиска

Содержание S - DMX

Отзывы:

Похожие инструкции для S - DMX

Бренды по названию

Популярные бренды