Toa DP-L2 Operating Instructions Manual
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Toa DP-L2 Operating Instructions Manual

Toa DP-L2 Operating Instructions Manual

Digital ambient noise controller
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OPERATING INSTRUCTIONS
DIGITAL AMBIENT
DP-L2
NOISE CONTROLLER
(Version 2.00)
Thank you for purchasing TOA's Digital Ambient Noise Controller.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
TOA Canada Corporation

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  • Page 1 OPERATING INSTRUCTIONS DIGITAL AMBIENT DP-L2 NOISE CONTROLLER (Version 2.00) Thank you for purchasing TOA's Digital Ambient Noise Controller. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment. TOA Canada Corporation...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ................3 2. GENERAL DESCRIPTION ................5 3. FEATURES ......................5 4. HANDLING PRECAUTIONS ................5 5. NOMENCLATURE AND FUNCTIONS Front .......................... 6 Rear ........................... 7 6. SETTINGS 6.1. Setting Operations and Setting Screens 6.1.1.

  • Page 3: Safety Precautions

    • Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.
  • Page 4 Indicates a potentially hazardous situation which, if mishandled, could CAUTION result in moderate or minor personal injury, and/or property damage. When Installing the Unit • Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock. •...

  • Page 5: General Description

    • Install the unit in locations where the temperature is between 0 and +40°C and the moisture is less than 90% (no dew condensation must be formed). • The DP-L2 is a precision audio component. To prevent failure, avoid locations where the unit may be exposed to strong shocks or vibrations.

  • Page 6: Nomenclature And Functions Front

    5. NOMENCLATURE AND FUNCTIONS [Front] 1. Power indicator 8. NEXT key Lights when the power is switched on. Advances the setting item display to a next screen. Tip: The power switch (17) is located on the rear panel. 9. ALC key Permits the ALC function to be set to ON or OFF 2.

  • Page 7: Rear

    [Rear] 18 19 17. Power switch 23. INPUT 1 and 2 terminals Turns on and off the power. (+4/–8/–20 dB* changeable, 15 kΩ) Electronically-balanced inputs of removable Tip: The Power indicator (1) is located on the front terminal blocks. Polarity: E=Ground, C=Cold, panel.

  • Page 8: Settings

    6. SETTINGS 6.1. Setting Operations and Setting Screens 6.1.1. Keys and knobs used in settings (1) SETTING Key Permits the system setting screen to display. If this key is pressed simultaneously with the ALC key, the ALC setting screen is displayed. If pressed simultaneously with the ANC key, the ANC setting screen is displayed.

  • Page 9: On-Screen Indications

    6.1.2. On-screen indications [ALC/ANC level indication screen] Displayed when in normal operation state. The signal level of the highlighted channel is displayed by the A L C 1 0 d B M E T E R INPUT LEVEL, OUTPUT LEVEL, and ALC LEVEL indicators. The A N C 1 O F F selected channel moves cyclically among S (SENSOR level), 1...

  • Page 10: Setting Flow Charts

    6.2. Setting Flow Charts 6.2.1. System setting flow chart Adjustment mode S E T T I N G M O D E S E T T I N G M O D E O R M A L A D V A N C E D SUMMING mode S U M M I N G M O D E...

  • Page 11: Alc Function Setting Flow Chart

    6.2.2. ALC function setting flow chart Press both keys simultaneously. When CHANNEL LINK is When CHANNEL LINK is set to OFF. set to ON. G A T E L E V E L G A T E L E V E L I N P U T 1 –...

  • Page 12: Anc Function Setting Flow Chart

    6.2.3. ANC function setting flow chart Press both keys simultaneously. M I N N O I S E S E T P U S H E N T E R M I N N O I S E S E T P R O G R E S S .

  • Page 13: Alc And Anc Functions On/Off Settings

    6.2.4. ALC and ANC functions ON/OFF settings [ALC function setting] A L C C H 1 O F F A L C C H 1 A L C C H 2 O F F A L C C H 2 O F F A L C C H 1...

  • Page 14: Input Level, Output Level, And Alc Level Indication Selection

    6.2.5. INPUT LEVEL, OUTPUT LEVEL, and ALC LEVEL indication selection A L C 1 O F F M E T E R A N C 1 0 d B The cursor moves to the channels S, 1, 2, S, and so on for selection with each depression of the METER indication selector key.
  • Page 15 Step 1. Perform system settings. Press the SETTING key to enter the system setting screen [Enter the setting screen.] (adjustment mode), then select the setting item with the PARAMETER knob. (See p. 10; System setting flow chart.) 1-1. Set the adjustment mode. Setting parameter: NORMAL or ADVANCED The ADVANCED mode has more manually-operated setting items than the NORMAL mode, enabling fine settings.
  • Page 16 Step 2. Set the maximum output level. Check the maximum input level of the equipment connected to the unit's OUTPUT 1 and OUTPUT 2, then adjust it to the appropriate level with the MAXIMUM OUTPUT level control. Both the OUTPUT 1 and OUTPUT 2 are set to the same level. M A X I M U M O U T P U T 0 d B u...
  • Page 17 When the adjustment mode is set to NORMAL, and CHANNEL LINK to ON: Connect a sound source to INPUT 1. When INPUT 2 is used in the setting step below, also connect a sound source to INPUT 2. 3-1. Set the GATE LEVEL while monitoring the INPUT LEVEL indicator.
  • Page 18 When the adjustment mode is set to ADVANCED, and CHANNEL LINK to ON: Connect a sound source to INPUT 1. When INPUT 2 is used in the setting step below, also connect a sound source to INPUT 2. 3-1. Set the GATE LEVEL while monitoring the INPUT LEVEL indicator.
  • Page 19 4-4. Set the average time required to detect the ambient noise From the previous page levels with the sensor microphone. Adjustable range: 10 s, 20 s, 30 s, 1 min, 5 min S A M P L E T I M E 2 0 s e c 4-5.
  • Page 20 [When the preset minimum ambient noise level is extremely lower than the actual level] In this case, the unit recognizes that the ambient noise is high even in low ambient noise condition (A) where the unit is actually used, providing sound output at high level (–3 dB in this example). SENSOR level 80 dB A D J .

  • Page 21: Key Lock Function Settings

    (2) If the current noise level (A) is not the minimum ambient noise level when the unit is actually used, correct the ZERO level so that the output level becomes the desired level. SENSOR level A D J . Z E R O + 1 0 d B –...

  • Page 22: Restoring Default Settings

    6.5. Restoring Default Settings [Front] Liquid crystal display BACK key NEXT key RESET key [Rear] Power switch Following 2 methods are available to revert the unit's current settings to the factory-preset parameters. (1) Method by using the power switch Step 1. Turn the power switch off. Step 2.

  • Page 23: Connections

    Cable end treatment Solid or stranded cable Shielded cable 7 mm 7 mm 20 mm Connector connections DP-L2's rear panel Slotted screwdriver Step 1. Loosen the terminal screw, then insert the cable. Tightens Loosens Step 2. Retighten the terminal screw. (Pull on...

  • Page 24: Example 1: Input And Output Connections (When Connecting To A Stereo Mixer's Outputs)

    CH 1 CH 2 19 16 POWER 19 16 – dB – dB Sensor microphone (for detecting ambient noise) DP-L2 POWER RS-232C OUTPUT 2 [+4dB] OUTPUT 1 [+4dB] MONITOR OUT [+4dB] INPUT 2 [+4/–8/–20dB] INPUT 1 [+4/–8/–20dB] SENSOR [+4/–48dB] H +15VDC...

  • Page 25: Rack Mounting

    Also, be sure to mount a perforated panel larger than 1U size at the top and bottom of the rack. • When mounting two DP-L2 units in an equipment rack, be sure also to mount a perforated panel larger than 1U size above and below the two units, as shown in the figure.

  • Page 26: Block Diagram

    9. BLOCK DIAGRAM...

  • Page 27: Recording Table Of Function Settings

    10. RECORDING TABLE OF FUNCTION SETTINGS It is recommended that you note the current setting contents in this recording table for future reference. Function Mode* Setting item Default (presetting) Setting content SETTING MODE NORMAL NORMAL ADVANCED SUMMING MODE OUT=CH1+CH2 SETTING CHANNEL LINK SENSOR SENSE +4 dB...

  • Page 28: Specifications

    • The design and specifications are subject to change without notice for improvement. • Prepare locally the sensor microphone for detecting ambient noise. • Accessories Power cord (2 m) ..............1 Removable terminal block (3 pins) .......... 5 Removable terminal block (4 pins) .......... 1 TOA Canada Corporation https://www.toacanada.com 133-02-00048-00...

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