Drawmer DL231 Operator'S Manual Download

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DL231 OPERATORS MANUAL

DRAWMER DL231

Dual Expander Compressor Limiter

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 63mA WHERE THE MAINS INPUT VOLTAGE SWITCH IS

SET TO 230 VOLTS AC. AND 125mA WHERE THE MAINS INPUT VOLTAGE

IS 115 VOLTS AC.

ALL FUSES MUST COMPLY WITH IEC127-2.

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.

Summary of Contents for DL231

Page 1: ...1 OPERATORS MANUAL CONTENTS SAFETY CONSIDERATIONS page 1 INTRODUCTION page 2 INSTALLATION page 3 CONTROL DESCRIPTIONS page 4 OPERATION page 6 TECHNICAL SPECIFICATION page 8 h DRAWMER ELECTRONICS LTD 1...

Page 2: ...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 be...

Page 3: ...MAINS INPUT VOLTAGE SWITCH IS SET TO 230 VOLTS AC AND 125mA WHERE THE MAINS INPUT VOLTAGE IS 115 VOLTS AC ALL FUSES MUST COMPLY WITH IEC127 2 THE FUSE BODY SIZE IS 20mm x 5mm CAUTION MAINS CABLE DO NO...

Page 4: ...ase the versatility of such a unit by automating some of the more critical control functions The DL231 is a dual channel Expander Compressor Limiter combining ease of operation with flexible performan...

Page 5: ...ad try disconnecting the signal screen on the cables connecting the DL221 to the patchbay If such measures are necessary balanced operation is recommended S C INSERT The side chain insert point is con...

Page 6: ...for the compressor to recover from gain reduction Programme signals are complex so a complex release characteristic is required for optimum results Fast transients require a fast release time to avoid...

Page 7: ...h sets the maximum attenuation of 10 20 or 40dB FUNCTION selects side chain listen normal expander in operation and off expander bypassed ATTACK time is completely automatic See introduction RELEASE t...

Page 8: ...ereo link and set up as above making sure that all controls are the same for both channels GR displays will show the same readings except when excessive peak limiting occurs on either channel 6 If amb...

Page 9: ...djust the expander to obtain the required noise reduction NB The external filter will not affect the processed signal only the control circuitry Frequency Conscious Compression This can be achieved by...

Page 10: ...eshold 24dB to infinity ref 4dBm Ratio Variable 1 1 to 20 1 Attack 50 S to 5mS Release 50mS to 5 Sec Output Gain 20dB to 20dB EXPANDER Threshold 40dB to 10dB Ratio 1 1 1 2 1 20 Switchable Attenuation...