Toa DP-L2 Operating Instructions Manual Download Page 1

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OPERATING INSTRUCTIONS

DIGITAL AMBIENT
NOISE CONTROLLER

DP-L2

(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

Summary of Contents for DP-L2

Page 1: ...IENT NOISE CONTROLLER DP L2 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...

Page 2: ...4 ALC and ANC functions ON OFF settings 13 6 2 5 INPUT LEVEL OUTPUT LEVEL and ALC LEVEL indication selection 14 6 3 Setting Procedures 14 6 4 Key Lock Function Settings 6 4 1 Locking the keys 21 6 4...

Page 3: ...proximity to heaters and never place heavy objects including the unit itself on the power cord as doing so may result in fire or electric shock Since the unit is designed for in door use do not instal...

Page 4: ...posed to the direct sunlight near the heaters or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock Be sure to follow the instructions below when rack...

Page 5: ...may be exposed to strong shocks or vibrations To clean be sure to first switch off the unit s power then wipe with a dry cloth When the unit gets very dirty use a cloth damped in a neutral cleanser Ne...

Page 6: ...t saved newly set parameters are cancelled when the power is switched off or the RESET key is pressed Pressing this knob when the PUSH ENTER indication is displayed validates the on screen setting ite...

Page 7: ...he supplied 3P removable terminal plug for connection See p 23 23 INPUT 1 and 2 terminals 4 8 20 dB changeable 15 k Electronically balanced inputs of removable terminal blocks Polarity E Ground C Cold...

Page 8: ...hing in the setting screen permits either the setting content or parameter to be selected Such parameters and setting contents changed begin to work in real time Pressing this knob afterward permits d...

Page 9: ...sed Indicates ALC and ANC levels or their OFF states 6 1 2 On screen indications ALC ANC level indication screen Displayed when in normal operation state Setting screen G A T E L E V E L I N P U T 2 6...

Page 10: ...d B S E N S O R S E N S E 4 8 d B S E N S O R F I L T E R F L A T S E T T I N G MO D E O R M A L N S U MM I N G MO D E F F O S U MM I N G MO D E O U T C H 1 C H 2 S E T T I N G MO D E A D V A N C E D...

Page 11: ...E T P U S H E N T E R I N P U T S E N S E S E T 4 d B I N P U T S E N S E S E T I N P U T 1 4 d B I N P U T S E N S E S E T I N P U T 2 4 d B B GM L E V E L 0 d B A L C 1 0 d B M E T E R A N C 1 O F F...

Page 12: ...A X L E V E L 0 M I N L E V E L 6 S AM P L E T I M E 2 0 s e c G A I N R A T I O N S 3 3 A D J Z E R O S 1 0 d B L 1 8 S E N S I N G P O I N T f 1 2 1 0 0 H z S E N S I N G P O I N T f 2 5 5 0 0 H z S...

Page 13: ...C H 2 O F F A L C C H 1 O F F A L C C H 2 O F F A L C C H 1 O F F A L C C H 2 O N After 3 seconds After 1 minute ALC ANC level indication screen A L C 1 O F F M E T E R A N C 1 0 d B S 1 2 A N C C H 1...

Page 14: ...the channels S 1 2 S and so on for selection with each depression of the METER indication selector key Level indicators and indicated channel table 6 3 Setting Procedures The general outlines of sett...

Page 15: ...ine settings 1 2 Set the SUMMING mode Setting parameter OFF or OUT CH1 CH2 The diagrams below show the relationship between the input output and the ALC ANC functions when the SUMMING mode is ON OUT C...

Page 16: ...vel is kept unchanged When it is above the GATE LEVEL the ALC function works to change the controlled variable 3 2 Set the GATE LEVEL of INPUT 2 while monitoring the INPUT LEVEL indicator When the inp...

Page 17: ...nd CHANNEL LINK to OFF 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 of INPUT 1 while monitoring the IN...

Page 18: ...15 seconds To the next page Push both keys simultaneously Enter the setting screen When the adjustment mode is set to ADVANCED and CHANNEL LINK to ON Connect a sound source to INPUT 1 When INPUT 2 is...

Page 19: ...evel The minimum noise level that has been measured in Step 4 1 is defined as reference value ZERO level The explanations below are based on the assumption that the maximum output level MAX LEVEL mini...

Page 20: ...put level Output level ZERO level set by following MIN NOISE SET instruction Step 4 1 ZERO level correction value Current noise level A Adjusted output level Correct the ZERO level to this position In...

Page 21: ...Where f1 f2 f3 f2 550 Hz f2 f1 30 Hz f3 1 08 kHz f3 f2 30 Hz S E N S I N G P O I N T f 1 2 1 0 0 H z From page 19 Frequencies f2 and f3 can be set in the similar manner 2 If the current noise level A...

Page 22: ...n the power switch off Step 2 Turn the power switch on while holding down both the BACK key and NEXT key at the same time Note Keep pressing both the BACK key and NEXT key till the indication RELEASE...

Page 23: ...n an excessive rise in joint temperatures Cable end treatment Connector connections Step 1 Loosen the terminal screw then insert the cable Step 2 Retighten the terminal screw Pull on the cable to ensu...

Page 24: ...Microphones Speaker for detecting ambient noise DP L2 POWER ON RS 232C SIGNAL GND Power amplifier Power amplifier Speaker Speaker BGM player Sensor microphone for detecting ambient noise OUTPUT 2 4dB...

Page 25: ...ing the DP L2 close to a power amplifier or other heat generating equipment be sure to mount the unit below the equipment so that it is not affected by the rising heat Power amplifier Perforated panel...

Page 26: ...B 12 dB 4 48 dB 4 8 20 dB 4 8 20 dB 12 dB 12 dB 15 V 15 V SENSOR INPUT 1 0 dB 0 775 V H C E E H C E SENSOR C SENSOR H GND LIFT GND LIFT H C INPUT 2 E H C INPUT 1 C INPUT 1 H HA INPUT 2 C INPUT 2 H HA...

Page 27: ...TING ALC ANC Mode C C A C A C A A A A Setting item SETTING MODE SUMMING MODE CHANNEL LINK SENSOR SENSE SENSOR FILTER GATE LEVEL INPUT 1 INPUT 2 INPUT SENSE SET INPUT 1 INPUT 2 BGM LEVEL MIN NOISE SET...

Page 28: ...tion Sensor input reference level fine adjustment function Maximum output signal level control 15 to 0 dB Minimum output signal level control 18 to 3 dB Sample time setting 10 s 20 s 30 s 1 min 5 min...

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