Toa DP-L2 Скачать руководство пользователя страница 5

5

2. GENERAL DESCRIPTION 

TOA's DP-L2 is a 1U size* rack-mountable digital audio processor having an ambient noise control (ANC)
function which automatically adjusts output sounds in response to changes in ambient noise level. It also
features an automatic level control (ALC) function that automatically adjusts the input signal level to an
appropriate level. 

*1U size: 44.5 mm (standard size)

3. FEATURES 

• ANC function distinguishes between the unit's output sound and the ambient noise. (The unit's output sound

is not detected as noise.)

• Various types of microphones, including ceiling flush mounted, dynamic and condenser types, usable for

detecting ambient noise.

• Monitoring of sound collected via the ambient noise sensor microphone.

• Front-mounted LED meters for the input and output signal levels, and ALC and ANC levels.

• Easy setting of each function with the front-mounted LCD (liquid crystal display), keys and knobs.

4. HANDLING PRECAUTIONS 

• The supplied power supply cord is designed for exclusive use with this unit. Never use it with other

equipment.

• 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.

• 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. Never use benzene, thinner or chemically-treated cleaning cloth
because such volatile liquids could deform or discolor the unit.

• FCC Rules (CU version) and Class A ITE (CE version) 

The CU version complies with Part 15 of the FCC Rules.

The CE version complies with Class A ITE.

Warning 

This is a class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.

Note 

This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide  reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.

Modifications 

Any modifications made to this device that are not approved by TOA Corporation may void the authority
granted to the user by the FCC to operate this equipment.

Содержание DP-L2

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Отзывы: