DS501 - Machine à effets lumineux DRAWMER - Free user manual and instructions

USER MANUAL DS501 DRAWMER

IF A FAULT DEVELOPS page 11

CONTACTING DRAWMER page 11

TECHNICAL SPECIFICATION page 12

BLOCK DIAGRAM page 13

COPYRIGHT

This manual is copyrighted © 2001 by Drawmer Electronics, Ltd. With all rights reserved. Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Drawmer.

ONE YEAR LIMITED WARRANTY

Drawmer Electronics Ltd., warrants this product to conform substantially to the specifications of this manual for a period of one year from the original date of purchase when used in accordance with the specifications detailed in this manual. In the case of a valid warranty claim, your sole and exclusive remedy and Drawmer's entire liability under any theory of liability will be to, at Drawmer's discretion, repair or replace the product without charge, or, if not possible, to refund the purchase price to you. This warranty is not transferable. It applies only to the original purchaser of the product.

For warranty service please call your local Drawmer dealer. Alternatively call Drawmer Electronics Ltd. at [phone]. Then ship the defective product, with transportation and insurance charges pre-paid, to Drawmer Electronics Ltd., Coleman Street, Parkgate, Rotherham, S62 6EL UK. Write the RA number in large letters in a prominent position on the shipping box. Enclose your name, address, telephone number, copy of the original sales invoice and a detailed description of the problem. Drawmer will not accept responsibility for loss or damage during transit.

This warranty is void if the product has been damaged by misuse, modification or unauthorised repair.

THIS WARRANTY IS IN LIEU OF ALL WARRANTIES, WHETHER ORAL OR WRITTEN, EXPRESSED, IMPLIED OR STATUTORY. DRAWER MAKES NO OTHER WARRANTY EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. PURCHASER'S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY SHALL BE REPAIR OR REPLACEMENT AS SPECIFIED HEREIN.

IN NO EVENT WILL DRAWMER ELECTRONICS LTD. BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN THE PRODUCT, INCLUDING LOST PROFITS, DAMAGE TO PROPERTY, AND, TO THE EXTENT PERMITTED BY LAW, DAMAGE FOR PERSONAL INJURY, EVEN IF DRAWMER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Some states and specific countries do not allow the exclusion of implied warranties or limitations on how long an implied warranty may last, so the above limitations may not apply to you. This warranty gives you specific legal rights. You may have additional rights that vary from state to state, and country to country.

In the interests of product development, Drawmer reserve the right to modify or improve specifications of this product at any time, without prior notice.

SAFETY CONSIDERATIONS

CAUTION - MAINS FUSE

TO REDUCE THE RISK OF FIRE REPLACE THE MAINS FUSE ONLY WITH THE SAME TYPE, WHICH MUST BE A CLASS 3, 230 VOLT, TIME DELAY TYPE, RATED AT 80mA WHERE THE MAINS INPUT VOLTAGE SWITCH IS SET TO 230 VOLTS AC. AND 160mA WHERE THE MAINS INPUT VOLTAGE IS 115 VOLTS AC. ALL FUSES MUST COMPLY WITH IEC 60127-2. THE FUSE BODY SIZE IS 20mm x 5mm.

CAUTION - MAINS CABLE

DO NOT ATTEMPT TO CHANGE OR TAMPER WITH THE SUPPLIED MAINS CABLE.

CAUTION - SERVICING

DO NOT PERFORM ANY SERVICING. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.

WARNING

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

CAUTION

RISK OF ELECTRIC SHOCK DO NOT OPEN

INSTALLATION

This product is designed for standard 19" rack mounting and occupies 1U of rack space. Use four M6 pan head screws to secure the unit into the rack. Fibre or plastic washers may be used to prevent the front panel becoming marked by the mounting bolts.

! Care should be taken in the choice of positioning. The unit should not be mounted where other equipment obstructs the normal air flow. Avoid mounting the unit directly above power amplifiers or power supplies that radiate significant amounts of heat.

! The DS501 should not be operated near any water or in a location where moisture might be present.

INTRODUCTION

The Drawmer DS501 is a sophisticated dual channel noise gate, which may be used as two independent channels or linked for true stereo operation. It incorporates a number of impressive features, many pioneered by Drawmer, which are invaluable to the sound engineer and not found on conventional noise gates:

! Variable high-pass and low-pass filters for 'frequency conscious' gating.

! Comprehensive envelope control, attack, hold, decay and range.

! Extremely low-noise and low-distortion circuitry.

! Ultra-fast response time.

! Comprehensive side-chain filtering.

! 'Key listen' facility.

! 'Traffic light' display giving clear indication of gate status.

! Signal below threshold indicator.

! Balanced inputs and outputs.

! Peak punch.

AUDIO CONNECTIONS

All input and output connectors are balanced XLRs, with the wiring convention being: pin 2 hot, pin 3 cold and pin 1 ground. For unbalanced operation, it is important to short pin 3 of the XLR connector to ground (pin 1) at both input and output.

Key inputs are made via 14 " mono jack connectors. If the Key jack sockets are permanently wired to a patch bay, it is important that the patch bay sockets are fully normalised to prevent random unwanted triggering.

If earth loop problems are encountered, never disconnect the mains earth but instead, try disconnecting the output signal screen at one end of the cables connecting the DS501 to the patchbay, we suggest inside the XLR connector itself. If such measures are necessary, balanced operation is recommended.

OUTPUT CHANNEL 1 KEY INPUT INPUT

POWER CONNECTION

If the unit is to be operated at a mains input voltage which is different to that as supplied, the following must be carried out by a qualified technical engineer.

1: Disconnect the unit from the mains.
2: Using a number 1 size pozidrive screwdriver, remove the seven self-tapping screws that retain the top cover.

ENSURE THAT THE POWER IS DISCONNECTED SWITCH AND FUSE ARE LOCATED HERE

Accessing the internal power switch and fuse

1. Set the voltage rating and replace the fuse.

2. Replace the cover.

PR1 IEC1 VSI Change Fuse Fuse Type: 80mA - 230v 160mA - 115v BS EN 60127-2 1991 Sheet III 20mmx5mm Set the Voltage Rating P02 H2 P2 PC4 PUI HI PD3 PC1 PC2

CONTROL DESCRIPTION

L.F. 25Hz - 3KHZ

The Low Frequency filter works by severely attenuating frequencies below the cut-off frequency selected.

H.F. 250Hz - 30KHz

The High Frequency filter attenuates frequencies above the selected cut-off value. In other words, when both filters are set, it is the range between the two settings that is allowed to pass.

Note: Filters only effect the signal triggering the gate. See 'KEY LISTEN'.

Ext/Int

In the Int position, this switch causes the gate to respond to the dynamics of the signal being processed. In the Ext position, an external audio signal fed to the key input is used to control the gate, making it possible to gate one sound using another, independent signal.

Threshold ! 72dBFs - Infinity

Sets the level at which the gate opens. The four led meter, to the left of the control, shows the signal below threshold.

Attack 10uS - 1 Second

This control determines how quickly the gate opens. The fastest Attack time ensures that the gate does not clip the leading edge of extremely fast transients. Note: See section on using Attack under 'OPERATION'.

Hold 10mS - 2.5 Second

Determines the amount of time the gate is held open after the signal falls below the Threshold.

Decay 5mS - 4 Second

Determines the rate at which the gate closes, once the signal has fallen below the Threshold and the Hold time has expired.

Range 0dB - !80dB

Sets the amount of attenuation applied to the signal when the gate is closed. This enables the gate to remove unwanted signals entirely, or simply to attenuate signals which are too loud. Note: Active on both channels, even in stereo linked operation

Gate/Duck Switches from normal Gating to Ducking, for applications such as voice-over or the removal of 'clicks' and 'pops'.

Note: See later sections on Ducking under 'OPERATION'.

Key Listen/

Gate/ Bypass

Key Listen allows the effect of the key filters on the programme material to be heard at the output.

Gate position is selected for normal use; the filters only affect the way the unit responds to the incoming programme material - they do not have any direct effect on the output signal.

Bypass position routes the input signal to the output with no processing.

Note: To use the DS501 as a filter instead of a gate leave the switch in the Key Listen position.

Display The famous Drawmer "traffic light" display shows gate status.

Simple line drawing of five sun icons in a row, no text or symbols present

Gate Closed Hold Time Gate Open

Peak Punch Adds gain to the leading edge of the envelope for a short duration. This adds considerable power to the gated signal. A filter option allows the user to tune the punch to a selected frequency for more subtle effects.

Note: See later section 'PEAK PUNCH.'

Filter/ Full Band/

Out OUT - Peak punch is not used.

FULL BAND - Only the "Level" knob is used. Tune is not used.

FILTER - Both "Tune" and "Level" knobs are used.

Tune 75 Hz - 16 kHz

Controls the frequency band to be "punched".

Level 1 - 10

Sets the Peak Punch level.

Stereo Link This switch links both channels for two tracking channel

operation, with channel one being master. The trigger source selected for channel one will actuate both channels' envelopes when this mode is selected.

OPERATION

Use the following diagrams as a guide when operating the DS501.

Gating a Kick Drum.

KEY SOURCE L.F = FILTER = H.F. 100 250 300 350 Hz 250 Hz 1K 2K 1K 10K Hz 250 Hz THR FUNCTION GATE OUTPUT GATE CHANNEL 1 THRESH ATTACK HOLD DECAY RANGE PEAK PUNCH TUNE LEVEL 35 Hz 250 Hz Input Level Dependant 0.1mS 50mS 50mS Set to User Preference Optional - See Peak Punch Section

To Kick Drum Signal OUT CHANNEL 1 KEY INPUT INPUT Ch1 Kick Drum Ch1 Ch2 Line In Insert Gain Gain EQ. High Mid Low Ch 1 Ch 2 0 10 20 30 40 50 60

Gating a Snare Drum.

KEY SOURCE INT 100 250 1K 2K 30 500 30K Hz 250 Hz 30K FUNCTION GATE CHANNEL 1 OUTPUT GATE THRESH ATTACK HOLD DECAY RANGE PEAK PUNCH 1k Hz 2 kHz Input Level Dependant 0.1mS 50mS 50mS Set to User Preference Optimal - See Peak Punch Section TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURB 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB TURBN 0 dB dB

To Snare Drum Signal OUTI CHANNEL 1 INPUT KEY INPUT Ch1 Snare Drum Ch1 Ch2 Mic In Mic In Line In Line In Insert Insert Gain Gain EQ High EQ High Mid Mid Mid Low Low Ch 1 Ch 2

Triggering a Bass Guitar from a Kick Drum.

KEY SOURCE EXT Hz 100 250 Hz 250 300 Hz 250 4K 10K 2K 10K 35 Hz 250 Hz FUNCTION GATE THRESH INTACK 20 S 18 25 S 16 28 S 14 35 S 12 40 S 9 50 S 8 10 S 7 12 S 6 15 S 5 18 S 4 20 S 3 25 S 2 30 S 1 35 S OUTPUT GATE HOLD DECAY RANGE TUNE LEVEL PEAK PUNCH OUT 35 Hz 250 Hz Input Level Dependant 0.1mS 0.2S 0.2S Set to User Preference Optional - See Peak Punch Section To Bass Channel Insert → Cable Wiring Diagram desk DS501 To→Kick Drum Channel Insert Ch1 Ch2 Ch1 Kick Drum Ch2 Bass

Ducking Music from Vox.

KEY SOURCE EXTRIOR 250 300 400 500 600 700 800 Hz Hz FUNCTION DUCK CHANNEL 1 OUTPUT GATE THRESH ATTACK HOLD DECAY RANGE PEAK PUNCH TUNE LEVEL 25 Hz 30kHz Input Level Dependant Set to User Preference Not Used Not Used

To Music Channel Cable Wiring Diagram desk DS501 To DJ Mic Signal from Mixing Desk OUT CHANNEL 1 KEY INPUT INPUT Ch1 DJ Mic Ch2 Music

PEAK PUNCH

Peak Punch is a dynamic feature which accelerates the leading edge as the gated signal opens, adding up to 12dB of gain for approximately 10mS with proprietary release characteristics.

For percussive material such as drums, fast synthesised sounds or percussive guitar, the Peak Punch mode of operation will give the most dramatic results.

PEAK PUNCH AFFECTS THE FIRST 10mS OF THE GATED SIGNAL LEVEL HOLD NORMAL GATED ENVELOPE DECAY ATTACK

Care must be taken with material which has a slow attack (especially low frequency bass sounds), as the Peak Punch may produce transient clicks at the beginning of sounds, unless the attack knob is also slowed.

PEAK PUNCH FULL OUT BAND 200 500 700 1K 2K 4K 6K 75 16K Hz 4 5 6 7 8 9 10 Not Used 4 TUNE LEVEL

Filter section (TUNE) is not used in FULL BAND mode.

Set the peak punch LEVEL for added attack. Up to 12dB is available.

PEAK PUNCH FULL OUT EAND 200 700 4 5 6 7 1K 2K 3=8 100 4K 2=9 100 Hz 15K 1 10 TUNE LEVEL 100 Hz 7

Using the filter to TUNE the punch.

Low pitch frequencies add depth.

PEAK PUNCH FULL OUT EAND 500 200 100 2K 1K 4K 6K Hz 15K TUNE LEVEL 4 kHz 7

High punch frequencies could give a "rim shot" effect on a snare drum.

IF A FAULT DEVELOPS

For warranty service please call Drawmer Electronics Ltd. Or their nearest authorised service facility, giving full details of the difficulty. On receipt of this information, service or shipping instructions will be forwarded to you. No equipment should be returned under the warranty without prior consent from Drawmer or their authorised representative.

For service claims under the warranty agreement a service Returns Authorisation (RA) number will be given. Write this RA number in large letters in a prominent position on the shipping box. Enclose your name, address, telephone number, copy of the original sales invoice and a detailed description of the problem.

Authorised returns should be prepaid and must be insured. All Drawmer products are packaged in specially designed containers for protection. If the unit is to be returned, the original container must be used. If this container is not available, then the equipment should be packaged in substantial shock-proof material, capable of withstanding the handling for the transit.

CONTACTING DRAWMER

Drawmer Electronics Ltd., will be pleased to answer all application questions to enhance your usage of this equipment. Please address correspondence to:

Drawmer (Technical Help line) : Coleman St.: Parkgate : Rotherham : S62 6EL : UK

or, E-mail us on : [e-mail]

Drawmer dealers, Authorised service departments and other contact information can be obtained from our web pages on http://www.drawmer.com

TECHNICAL SPECIFICATIONS

(All measurements referenced to +4dBu operating level)

INPUT IMPEDANCE 20KS

MAXIMUM INPUT LEVEL + 17dB

OUTPUT IMPEDANCE 50S (bal)

MAXIMUM OUTPUT LEVEL + 17dB

BANDWIDTH 23Hz to 31KHz -1dB

NOISE AT UNITY GAIN ref 0dB, GATE open

	Wideband	22Hz - 22KHz	CCIR ARM	IEC A	Q-Pk CCIR
AV	! 90dB	! 95dB	! 95dB	! 97dB	! 84dB
RMS	! 88dB	! 93dB	! 93dB	! 95dB

DISTORTION

	100Hz	1KHz	10KHz
0dB input	< 0.025%	< 0.025%	< 0.025%

POWER REQUIREMENTS 93-125Volt or 185-250Volt at 50-60Hz, 9 Watts

FUSE RATING 80mA for 230Volt, 160mA for 115Volt

FUSE TYPE 20mm x 5mm, Class 3 Time delay, 250 Volt working. CONFORMING TO IEC 60127-2

WEIGHT (incl packaging) 3.4 Kgs

BLOCK DIAGRAM

POWER SUPPLY

graph TD
    A["CHANNEL 1"] --> B["INPUT STAGE"]
    B --> C["INPUT INPUT"]
    C --> D["OUTPUT STAGE"]
    D --> E["OUTPUT OUTPUT"]
    E --> F["OUTPUT OUTPUT"]
    F --> G["OUTPUT OUTPUT"]
    G --> H["OUTPUT OUTPUT"]
    H --> I["OUTPUT OUTPUT"]
    I --> J["OUTPUT OUTPUT"]
    J --> K["OUTPUT OUTPUT"]
    K --> L["OUTPUT OUTPUT"]
    L --> M["OUTPUT OUTPUT"]
    M --> N["OUTPUT OUTPUT"]
    N --> O["OUTPUT OUTPUT"]
    O --> P["OUTPUT OUTPUT"]
    P --> Q["OUTPUT OUTPUT"]
    Q --> R["OUTPUT OUTPUT"]
    R --> S["OUTPUT OUTPUT"]
    S --> T["OUTPUT OUTPUT"]
    T --> U["OUTPUT OUTPUT"]
    U --> V["OUTPUT OUTPUT"]
    V --> W["OUTPUT OUTPUT"]
    W --> X["OUTPUT OUTPUT"]
    X --> Y["OUTPUT OUTPUT"]
    Y --> Z["OUTPUT OUTPUT"]
    Z --> AA["OUTPUT OUTPUT"]
    AA --> AB["OUTPUT OUTPUT"]
    AB --> AC["OUTPUT OUTPUT"]
    AC --> AD["OUTPUT OUTPUT"]
    AD --> AE["OUTPUT OUTPUT"]
    AE --> AF["OUTPUT OUTPUT"]
    AF --> AG["OUTPUT OUTPUT"]
    AG --> AH["OUTPUT OUTPUT"]
    AH --> AI["OUTPUT OUTPUT"]
    AI --> AJ["OUTPUT OUTPUT"]
    AJ --> AK["OUTPUT OUTPUT"]
    AK --> AL["OUTPUT OUTPUT"]
    AL --> AM["OUTPUT OUTPUT"]
    AM --> AN["OUTPUT OUTPUT"]
    AN --> AO["OUTPUT OUTPUT"]
    AO --> AP["OUTPUT OUTPUT"]
    AP --> AQ["OUTPUT OUTPUT"]
    AQ --> AR["OUTPUT OUTPUT"]
    AR --> AS["OUTPUT OUTPUT"]
    AS --> AT["OUTPUT OUTPUT"]
    AT --> AU["OUTPUT OUTPUT"]
    AU --> AV["OUTPUT OUTPUT"]
    AV --> AW["OUTPUT OUTPUT"]
    AW --> AX["OUTPUT OUTPUT"]
    AX --> AY["OUTPUT OUTPUT"]
    AY --> AZ["OUTPUT OUTPUT"]
    AZ --> BA["OUTPUT OUTPUT"]
    BA --> BB["OUTPUT OUTPUT"]
    BB --> BC["OUTPUT OUTPUT"]
    BC --> BD["OUTPUT OUTPUT"]
    BD --> BE["OUTPUT OUTPUT"]
    BE --> BF["OUTPUT OUTPUT"]
    BF --> BG["OUTPUT OUTPUT"]
    BG --> BH["OUTPUT OUTPUT"]
    BH --> BI["OUTPUT OUTPUT"]
    BI --> BJ["OUTPUT OUTPUT"]
    BJ --> BK["OUTPUT OUTPUT"]
    BK --> BL["OUTPUT OUTPUT"]
    BL --> BM["OUTPUT OUTPUT"]
    BM --> BN["OUTPUT OUTPUT"]
    BN --> BO["OUTPUT OUTPUT"]
    BO --> BP["OUTPUT OUTPUT"]
    BP --> BQ["OUTPUT OUTPUT"]
    BQ --> BR["OUTPUT OUTPUT"]
    BR --> BS["OUTPUT OUTPUT"]
    BS --> BT["OUTPUT OUTPUT"]
    BT --> BU["OUTPUT OUTPUT"]
    BU --> BV["OUTPUT OUTPUT"]
    BV --> BW["OUTPUT OUTPUT"]
    BW --> BX["OUTPUT OUTPUT"]
    BX --> BY["OUTPUT OUTPUT"]
    BY --> BZ["OUTPUT OUTPUT"]
    BZ --> CA["OUTPUT OUTPUT"]
    CA --> CB["OUTPUT OUTPUT"]
    CB --> CC["OUTPUT OUTPUT"]
    CC --> CD["OUTPUT OUTPUT"]
    CD --> CE["OUTPUT OUTPUT"]
    CE --> CF["OUTPUT OUTPUT"]
    CF --> CG["OUTPUT OUTPUT"]
    CG --> CH["OUTPUT OUTPUT"]
    CH --> CI["OUTPUT OUTPUT"]
    CI --> CJ["OUTPUT OUTPUT"]
    CJ --> CK["OUTPUT OUTPUT"]
    CK --> CR["OUTPUT OUTPUT"]

graph TD
    A["OUTPUT STAGE"] --> B["PEAK PUNCH"]
    B --> C["VCA"]
    C --> D["KEY FILTER"]
    D --> E["INT KEY SOURCE"]
    E --> F["EXIT"]
    F --> G["INPUT STAGE"]
    G --> H["AUDIO INPUT"]
    H --> I["OUTPUT OUTPUT"]
    I --> J["CONTROL SIGNAL"]
    J --> K["KEY LISTEN"]
    K --> L["RANGE"]
    L --> M["BYPASS NORMAL"]
    M --> N["CONTROL SIGNAL"]
    N --> O["CONTROL SIGNAL"]
    O --> P["GATE CIRCUIT"]
    P --> Q["LINK"]
    Q --> R["THRESHOLD"]
    R --> S["RF"]
    S --> T["LF"]
    T --> U["INT KEY SOURCE"]
    U --> V["EXIT"]
    V --> W["INTERNATIONAL OUTPUT"]
    W --> X["OUTPUT OUTPUT"]
    X --> Y["OUTPUT OUTPUT"]