Bogen-ANS1R-Operation-Manual 电路图 维修手册.pdf

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1、ANS1R Ambient Noise Sensor Output Module 2002 Bogen Communications, Inc. 54-2067-01B 0403 Specifications subject to change without notice. 50 Spring Street, Ramsey, NJ 07446, U.S.A. Tel. 201-934-8500; Fax: 201-934-9832; Block Diagram RadioFans.CN 收音机爱 好者资料库 Activity Threshold Activity threshold is s

2、et just above typical operating level of the program material applied to the gain processing stage ANS1R. Ramp Speed Sets the speed by which gain is increased or decreased to the signal, from less than 1 dB/s (slow) to greater than 20 dB/s (fast). Maximum Gain Sets the maximum amount of gain added.R

3、ange of 1 dB to 22 dB of added gain. Defeat The effects of the ANS1R will be defeated when these terminals are shorted together. AUX Input Mono summing, stereo, unbalanced RCA inputs. The input can be used as a normal input or set to bypass the gain adjustment process of ANS1R. Ambient Threshold Con

4、trol Adjusts the microphone ambient noise input threshold from 64 dBspl to 112 dBspl.AUX Level Control Controls the input source level when internal jumper is set to Bypass mode (AUX signal bypasses gain riding). Activity LED Bi-color LED illuminates when differ- ent thresholds are triggered to assi

5、st in setup. Module Front Panel Controls or 5b. If the live ambient noise level while making these adjustments is at the desired trip point, then adjust the AMBNT THRES control to a point where the ACT LED flashes green. 6.Adjust the MAX GAIN to limit the maximum amount of gain the ANS1R can add to

6、the system. 7.Adjust the RAMP SPEED control to the desired amount of signal gain per second (dB/s).Lower gain per second (dB/s) settings allows for gradual increases and decreas- es and ignores short bursts of noise. Higher gain per second (dB/s) settings allow the system to react quickly to shorter

7、 bursts of noise. 8.Test the systems response to noise and,if necessary,set the ACT THRES control high- er if the maximum signal level is not achieved.Tweaking adjustments to Max Gain and Ramp Speed controls may also be necessary. Operation In Systems With Intermittent Audio Activity The ANS1R monit

8、ors the audio activity on the mix bus of the main unit. Using this infor- mation and the ambient noise level information, it regulates the amount of gain added to the system.This manner of operation allows the proper amount of gain to be added to keep the sources at the desired intelligible level wi

9、thout allowing it to become too great. When working in systems that do not have continuous mix bus signals, like simple paging systems, the ANS1R will behave differently than mentioned above. In these types of sys- tems, when the ambient noise threshold has been exceeded, the ANS1R will ramp up to t

10、he max gain setting during the time when there is no signal on the mix bus.When audio activity appears on the bus, the ANS1R may begin to reduce system gain, at the RAMP SPEED rate, in an attempt to reach an optimum sound level. With this type of intermittent audio operation, the setting of the MAX

11、GAIN and RAMP SPEED controls will be the major factors in the operation of the system.The MAX GAIN should be set for a level that will allow the paging to sound intelligible over the worst case noise but not higher.The RAMP SPEED should be set to match the type of response to noise changes wanted.If

12、 it is for an area with loud machinery that turns on and off,then a fast ramp,10-20dB/s,would be applicable.If it is an area where the noise gradually rises and lowers,then a slow ramp speed,1-5 dB/s,would be used.The slower ramp speed keeps the system from boosting gain when short loud noises are e

13、ncountered. Module Setup - Continued 6 RadioFans.CN 收音机爱 好者资料库 Home Run Style Wiring Daisy Chain Style Wiring Total Max Wire Length 2000 ft. Max Run Length 2000 ft. (Each Run) Wiring Multiple Microphones Physical connections can be made using either Home Runs back to the module from each sensor or b

14、y daisy-chaining sensors, depending on the installation.The maximum total wire length from sensor mics to the ANS1R must be kept below 2000 ft. Wiring Details - ANS1R and Microphones To Other Microphones (4 Max Total) Sensor Microphone Wiring The ANS1R requires connection of at least one sensor micr

15、ophone (ANS500M) for operation.To allow for better ambient noise sensing of large areas, up to 4 sensor microphones can be connected to a single ANS1R module. All microphones are wired in parallel matching the polarity markings on the sensor mic with the marking of the two MIC terminals on the ANS1R

16、. Sensor Microphone Connections 4 Module Setup Normal Mode: In this mode,all inputs into the system from other modules and the ANS1R modules AUX input will be affected by the automatic gain adjustments of the ANS1R. An AUX input is provided on this output module so that when it is installed the inpu

17、t func- tion of the module bay is not forfeited. When this module is set for “Normal Mode”, the front panel control of the unit functions normally, controlling the level of the source plugged into the modules AUX input.This input signal is applied to the units mix bus like all other input signals an

18、d is applied to the gain adjusting process of the ANS1R.Therefore, the input applied to the ANS1Rs AUX input, in this mode, will be affected by the gain adjusting process just like all the other inputs in the unit. Note: When the AUX Input Processing jumper is in the “Normal”position,the AUX LVL con

19、trol on the ANS1R module will be inoperable and the module bays front panel control will function. 1.Ensure that the AUX Input Processing jumper (J6) is in the “Normal” position (this is optional if the ANS1Rs AUX Input will not be used). 2.Connect all input sources to their respective inputs on the

20、 unit. 3.Set the desired levels of all the inputs using the units front panel level controls (the ANS1R modules AUX LVL control is inoperable in this mode). Go to Step 4 on next page. Bypass Mode: In this mode,all inputs into the system from other modules,but not the AUX input on this module, will b

21、e affected by the automatic gain adjustments of the ANS1R. In audio systems that provide continuous background music, it may be desirable to have the background music stay at a fixed level but have all other amplifier inputs (like a paging microphone) change level in response to the ambient noise le

22、vel in an area. Background music is typically provided to make a venue seem less empty during slow periods or to help cover conversation during quiet times. It is often undesirable to have this background music level increase as ambient noise increases since it only adds to the overall noise in the

23、area.The ANS1R provides a means to bypass its AUX input around the gain adjustment process so that it does not change with ambient noise levels. Note: When the AUX Input Processing jumper is in the “Bypass” position, the module bays front panel control will be inoperable and the AUX LVL control on t

24、he ANS1R module will function. 1.Ensure that the AUX Input Processing jumper (J6) is set to the “Bypass” position. 2.Connect the background music source to the modules RCA jacks. 3.Set the background music to the desired operating level using the modules AUX LVL control (the front panel input level

25、control for the installed bay is inoperable in this mode). Setup continues on next page. 5 Home Run Style Wiring Daisy Chain Style Wiring Total Max Wire Length 2000 ft. Max Run Length 2000 ft. (Each Run) Wiring Multiple Microphones Physical connections can be made using either Home Runs back to the

26、module from each sensor or by daisy-chaining sensors, depending on the installation.The maximum total wire length from sensor mics to the ANS1R must be kept below 2000 ft. Wiring Details - ANS1R and Microphones To Other Microphones (4 Max Total) Sensor Microphone Wiring The ANS1R requires connection

27、 of at least one sensor microphone (ANS500M) for operation.To allow for better ambient noise sensing of large areas, up to 4 sensor microphones can be connected to a single ANS1R module. All microphones are wired in parallel matching the polarity markings on the sensor mic with the marking of the tw

28、o MIC terminals on the ANS1R. Sensor Microphone Connections 4 Module Setup Normal Mode: In this mode,all inputs into the system from other modules and the ANS1R modules AUX input will be affected by the automatic gain adjustments of the ANS1R. An AUX input is provided on this output module so that w

29、hen it is installed the input func- tion of the module bay is not forfeited. When this module is set for “Normal Mode”, the front panel control of the unit functions normally, controlling the level of the source plugged into the modules AUX input.This input signal is applied to the units mix bus lik

30、e all other input signals and is applied to the gain adjusting process of the ANS1R.Therefore, the input applied to the ANS1Rs AUX input, in this mode, will be affected by the gain adjusting process just like all the other inputs in the unit. Note: When the AUX Input Processing jumper is in the “Nor

31、mal”position,the AUX LVL control on the ANS1R module will be inoperable and the module bays front panel control will function. 1.Ensure that the AUX Input Processing jumper (J6) is in the “Normal” position (this is optional if the ANS1Rs AUX Input will not be used). 2.Connect all input sources to th

32、eir respective inputs on the unit. 3.Set the desired levels of all the inputs using the units front panel level controls (the ANS1R modules AUX LVL control is inoperable in this mode). Go to Step 4 on next page. Bypass Mode: In this mode,all inputs into the system from other modules,but not the AUX

33、input on this module, will be affected by the automatic gain adjustments of the ANS1R. In audio systems that provide continuous background music, it may be desirable to have the background music stay at a fixed level but have all other amplifier inputs (like a paging microphone) change level in resp

34、onse to the ambient noise level in an area. Background music is typically provided to make a venue seem less empty during slow periods or to help cover conversation during quiet times. It is often undesirable to have this background music level increase as ambient noise increases since it only adds

35、to the overall noise in the area.The ANS1R provides a means to bypass its AUX input around the gain adjustment process so that it does not change with ambient noise levels. Note: When the AUX Input Processing jumper is in the “Bypass” position, the module bays front panel control will be inoperable

36、and the AUX LVL control on the ANS1R module will function. 1.Ensure that the AUX Input Processing jumper (J6) is set to the “Bypass” position. 2.Connect the background music source to the modules RCA jacks. 3.Set the background music to the desired operating level using the modules AUX LVL control (

37、the front panel input level control for the installed bay is inoperable in this mode). Setup continues on next page. 5 Jumper Selections AUX Input Signal-Processing Jumper The AUX input available on the module can be set to feed its signal to the amplifiers front level con- trol by setting the jumpe

38、r in the “Normal” position. The signal applied to this input will eventually be processed to the gain riding function of the ANS1R like every other input installed in the amplifier. By setting the jumper to “Bypass” position, the AUX input will not be affected by any gain level changes of the ANS1R.

39、The amplifiers front panel level con- trol will be inactive when the module is set in this mode. Any AUX signal level adjustment must be made using the modules AUX LVL control. There are situations where it may be undesirable for this AUX input to be affected by the gain riding function of the ANS1R

40、. A typical exam- ple would be where low level background music is desired in a lounge when there are only a few people present.When the lounge is crowded and the ambient noise level is high, it is not desirable for the background music level to increase since it will only add to the high ambient no

41、ise.This is a case where the AUX input “Bypass” setting would be appropriate. Muting Jumper Jumper placement only affects the modules unbalanced input signal.The jumper placement determines whether the modules input can be muted by other input modules or not. When enabled, the input is permanently s

42、et to the lowest priority level. When disabled, the module will not respond to mute signal and remains active continuously. Module Installation 1.Turn off all power to the unit. 2.Make all necessary jumper selections. 3.Position module in front of desired output module bay opening, making sure that

43、the module is right-side up. Output modules will not fit in an input module bay. Do not force an output module into an input module bay. 4.Slide module on to card guide rails. Make sure that both the top and bottom guides are engaged. 5.Push the module in to the bay until the faceplate contacts the

44、units chassis. 6.Use the two screws included to secure the module to the unit. WARNING: Turn off power to unit and make all jumper selections before installing module in unit. 3 4.Set the ACT THRES control to a point just before the ACT LED flashes amber.If audio activity is intermittent, see Operat

45、ing In Systems With Intermittent Audio Activity. 5a. Using the chart and diagram on page 7, set the AMBNT THRES to the dBspl level where automatic increases to the system volume would be desired; or 5b. If the live ambient noise level while making these adjustments is at the desired trip point, then

46、 adjust the AMBNT THRES control to a point where the ACT LED flashes green. 6.Adjust the MAX GAIN to limit the maximum amount of gain the ANS1R can add to the system. 7.Adjust the RAMP SPEED control to the desired amount of signal gain per second (dB/s).Lower gain per second (dB/s) settings allows f

47、or gradual increases and decreas- es and ignores short bursts of noise. Higher gain per second (dB/s) settings allow the system to react quickly to shorter bursts of noise. 8.Test the systems response to noise and,if necessary,set the ACT THRES control high- er if the maximum signal level is not ach

48、ieved.Tweaking adjustments to Max Gain and Ramp Speed controls may also be necessary. Operation In Systems With Intermittent Audio Activity The ANS1R monitors the audio activity on the mix bus of the main unit. Using this infor- mation and the ambient noise level information, it regulates the amount

49、 of gain added to the system.This manner of operation allows the proper amount of gain to be added to keep the sources at the desired intelligible level without allowing it to become too great. When working in systems that do not have continuous mix bus signals, like simple paging systems, the ANS1R will behave differently than mentioned above. In these types of sys- tems, when the ambient noise threshold has been exceeded, the ANS1R will ramp up to the max gain setting during the time when there is no signal on the mix bus.When audio activity appears on the bus, the ANS1R may beg