Toa AX-1000A Скачать руководство пользователя страница 7 | Manualshive

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Toa AX-1000A Скачать руководство пользователя страница 7

1. Front View

1. Input Volume Control

Adjusts input gain, after any gain stage(s) in the chosen 900 Series module.

2. Gate On/Off Indicator

Illuminates when the channel gates on.

3. Master/Slave Indicator

Illuminates when unit is the Master in a combinable system. Master/Slave switch is on the rear-panel.

4. Threshold Control

Adjusts the channel gate-on sensitivity. Turning fully counter-clockwise lowers the threshold, resulting in

maximum sensitivity.

5. Off-Attenuation Adjustment

Adjusts the inactive-input attenuation depth.

6. NOM Attenuation Control

Adjusts the operation of the automatic mixing system's gain-sharing circuitry. (0 log NOM is fully counter-

clockwise position; 20 log NOM is fully clockwise position.)

7. Master Volume Control

Adjusts the overall sound system level.

8. Power On/Off Switch and Indicator

LED illuminates when unit is turned on.

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Содержание AX-1000A

Страница 1: ...TIONS AUTOMATIC MICROPHONE MIXER AX 1000A Please follow the instructions in this manual to obtain the optimum results from this unit We also recommend you to keep this manual handy for future referenc...

Страница 2: ...etup Checklist General Operating Considerations 3 3 4 4 4 4 4 5 6 6 7 8 9 9 10 10 11 11 11 12 12 12 13 13 14 15 15 9 Setting Up Input Modules Choosing Microphones 10 Setup Procedure Mic Input Modules...

Страница 3: ...ng is user configured Internal Mute on any selected combination of inputs Input External Mute on any mutable modules Direct Outputs Logic Outputs Master Remote Volume Control terminal transformer isol...

Страница 4: ...Slave switches In addition to the Main Output the AX 1000A provides Direct and Logic Outputs for each channel Channel Direct Outputs Channel Direct Output uses are limited only by the application For...

Страница 5: ...here a single mixer must work in a wide variety of situations Perhaps this game show is staged as part of employee training An AX 1000A can be configured as four channels of normal mixing sound effect...

Страница 6: ...on than normal is needed with more mics on A setting between 10 logNOM and 20 logNOM provides more gain reduction than normal as additional microphones become active preventing feedback Note NOM Atten...

Страница 7: ...ts the channel gate on sensitivity Turning fully counter clockwise lowers the threshold resulting in maximum sensitivity 5 Off Attenuation Adjustment Adjusts the inactive input attenuation depth 6 NOM...

Страница 8: ...nnel Mute DIP Switches Chooses which channels mute in response to a short across the System Mute Terminals As shipped the default is on channels respond to a short across the mute terminals 9 Mute Fun...

Страница 9: ...serviceable parts inside Never remove the cover or you run the risk of a fatal electric shock 4 Input Signal Flow Since the AX 1000A has eight input ports for 900 Series plug in modules it is complete...

Страница 10: ...is set too low too sensitive ambient noise may cause a channel s gate to flutter open and closed randomly If it is too high the input will not gate open reliably when presented with a low level signa...

Страница 11: ...ure the AC power is off before inserting or removing modules Plug each module into its input port by sliding it between the guide rails Secure each module with two screws Cover unused ports with blank...

Страница 12: ...7 Output Configuration Main Output Connections Connect the power amplifier s to the output terminals To choose 150 ohm output To choose 600 ohm output Remote Master Volume If remote control of the mas...

Страница 13: ...mixed Because each Direct Output is individually buffered this type of hard wire mixing does not cause additional crosstalk between channels However the level of each channel goes down in a hard wire...

Страница 14: ...f 2 Confirm that NOM Attenuation is in the center detent 3 Confirm that all Off Attenuation Adjustments are fully counter clockwise 40 dB 4 Adjust the Master Volume to the desired nominal operating le...

Страница 15: ...p every time 9 Setting Up Input Modules Choosing Microphones Any microphone will work with the AX 1000A but better quality microphones yield higher gain before feedback Omnidirectional microphones are...

Страница 16: ...all channels 11 Setup Procedure Mic Channels Now you will set the channel volume controls to the maximum gain before feedback on all microphone inputs Begin with all channel volume controls off First...

Страница 17: ...me Automatic Module Mute Refers to a second independent muting scheme which can be designed into an AX 1000A by choosing the proper modules Internal Internal Mute INT muting occurs at the output of ea...

Страница 18: ...Mute contact closure is received MODULES DIP SWITCH POSITION Output TO MIX BUS DIRECT OUT LOGIC OUT 1 2 3 4 5 6 7 8 Mic Mic Mic mute to on Mic mute to off Aux with Mute Aux with Variable Mute Aux Line...

Страница 19: ...ormally this confers no advantage over the Internal Mute INT However the Mute or Mute Mic Module can be configured to turn on in the presence of the mute command There are some installations where cer...

Страница 20: ...ltiple Mixing AX 1000A s can be linked for up to 80 input channels 10 units The linking cable is available separately If you are installing N number of mixers order N 1 linking cables 1 for 2 mixers 2...

Страница 21: ...n to the one microphone in operation until more than one mic is on it shuts the others off even though their channel volume controls are set at operating level and it refuses to let the mic in operati...

Страница 22: ...y complex equipment overall system set up can affect the unit s performance in the field In any application it s a good idea to fasten a log of the Input Volume and Master Volume settings near the mix...

Страница 23: ...18 Block Diagram 23...

Страница 24: ...t output 1 x Link out 100mV 8 x Logic out isolated open collector 30 mA 24V DC max 8x Input Volume 1 x Master Volume 8 x Threshold Control 1 x NOM Attenuation Control 8 x Off Attenuation Control 1 x M...

Страница 25: ...ed Block Diagram Automatic Mixing Circuits omitted for clarity Simplified Block Diagram Automatic Mixing Circuits omitted for clarity Input Ch 1 Ch 1 Logic Output Ch 1 Direct Output Link Out Main Outp...

Страница 26: ...hoose Mic to use b Defeat phantom power if appropriate c Insert module d Connect input source Repeat on each input 2 Adjust Mic Module a Power up Mixer raise Master Volume and one channel s Input Volu...

Страница 27: ...old use Gate LEDs as a guide g Lower Input Volume to zero Repeat on each input 4 Insert and Set Up Line Input Modules a Connect input adjust module gain b Adjust Input Channel Volume Repeat for each l...

Страница 28: ...TOA Corporation Printed in Japan 133 12 157 10...

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