User manual BIAMP NMP200

[. . . ] NMP200 Noise Masking Processor Operation Manual ® Biamp Systems, 10074 S. W. (503) 641-7287 http://www. biamp. com blank print update Aug 8/01 Q: What is this 'Leveler' inside the NMP200? The Leveler function, in the Gain Manager section of an NMP200, is an automatic gain control (AGC). This means that the Leveler automatically adjusts volume levels up or down to compensate for signals that are softer or louder than normal. Q: What can this 'Leveler' do for me and my customer? The two most common applications for the Leveler are to control music sources which have been recorded at different levels, and to control different levels of speech caused by the person(s) speaking and/or their varying distances from the microphones. Example #1: A background music system utilizing a CD player as the primary source. [. . . ] Switching between Input 1 & Noise signals (to either Output) is then accomplished via Gain Matrix #2 presets. This is effective when only a single output (zone), or two outputs (zones) with independent delay, are required. 2) Gain Matrix #1 presets can be used to switch between Input 1 or Noise signal being routed to either Output (see Gain Matrix #1 screen on pg. Each channel of processing is dedicated to a specific Output (zone), via Gain Matrix #2. Separate EQ presets for Input 1 & Noise signals, as they appear at each output (zone), can also be used. This is effective when two outputs (zones), each with dedicated processing, are required. Of course, the NMP200 can simply be configured for processing Noise (or Input 1) signal only, at both Outputs. 8 SETUP DIGITAL DELAY SCREEN The Digital Delay screen is used to adjust delay time settings for each Output. Delay time is shown in the window, with adjacent buttons providing the up/down adjustments. Delay time may also be entered directly into the window, but will be rounded to the nearest available setting. Msec allows delay times to instead be entered & calculated in terms of distance measurements (inches, feet, centimeters, or meters). NOTE: Distances should be measured in terms of the difference between direct and delayed sound sources, with respect to the listener (i. e. . . direct source to listener = 200 feet; delayed source to listener = 20 feet; distance = 180 feet). Also, when sounds from the direct source & delayed source reach the listener at roughly the same volume level, additional delay (approximately 10~30 milliseconds) may be added to the calculated delay time. This added delay will produce what is known as the `Haas Effect', which gives the listener the impression that all sound is emanating from the direct source. This added delay should be fine-tuned by ear to achieve the desired results. Bypass temporarily sets delay time for the correspnding Output to minimum (1. 333 msec). 9 SETUP LOGIC INPUT DEFINITIONS SCREEN The Logic Input Definitions screen is used to assign specific `actions' to the sixteen Logic Inputs. Logic Inputs allow remote control of the NMP200 via external circuits, such as switches, contact-closures, active driver circuits, and/or `open-collector' logic outputs (see Logic Inputs on pg. However, using the Logic Input Definitions screen, each Logic Input may be assigned various `actions'. NOTE: Since Logic Inputs are controlled by switches, contact-closures, etc. , each Logic Input may be assigned certain actions to perform when the switch is `opened', and different actions to perform when that same switch is `closed'. Binary Mode selects a special group of Logic Inputs which can also be defined. This allows certain actions to be performed only when a specified condition of open/closed Logic Inputs exists within the group. When a Binary Mode is selected, indicators for the chosen group of Logic Inputs will appear below. Binary Combination then selects the specific combination of open/closed (on/off) Logic Inputs that needs to exist (for the assigned actions to be performed). [. . . ] out zone 1 speakers ADVANTAGE 4 operation: use 5A NB 8 operation: use 3A NB 325W/4 output 2 325W/4 output 1 4 operation: use 5A NB 8 operation: use 3A NB FU F US S DT-1A FU F US S E E EE CPA 650 MADE IN U. S. A. DT-1A SE US E FU F speaker fuse 2 To reduce the risk of fire, replace only with same type 8A SB fuse. FU FU S S CAUTION: SE US E FU F --120 VAC + + --class 2 wiring acceptable ground normal speaker fuse 1 lift stereo mono bridge E E AC Fuse SE US E FU F E17934 50/60 Hz 1500 Watts max UL . LISTED 989M COMMERCIAL AUDIO EQUIP. 17 SPECIFICATIONS & BLOCK DIAGRAM Frequency Response (20Hz~20kHz @ +4dBu): THD+Noise (20Hz~20kHz @ +4dBu): Dynamic Range (20Hz~20kHz): Maximum Gain: Input Impedance (balanced): Maximum Input (balanced): Output Impedance (balanced): Maximum Output (balanced): +0/-0. 5dB < 0. 002% > 100dB 20dB 20k ohms +24dBu 200 ohms +24dBu Sampling Rate: A/D & D/A Converters: Power Consumption: Dimensions: height (1 rack space) width depth Weight: 48kHz 128x oversampled 24-bit sigma delta < 15 watts 1. 75" (44mm) 19" (483mm) 7" (178mm) 4. 5 lbs. (2. 04kg) Input 1 gain A/D matrix NMP200 Block Diagram D/A matrix gain manager equalizer delay gain Output 1 gain manager internal pink-noise generator equalizer delay Output 2 D/A gain gain A/D Digital Signal Processing Blocks receive send link port RS-232 serial port logic inputs 18 WARRANTY BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL. BIAMP Systems expressly warrants this product to be free from defects in material and workmanship for a period of 5 YEARS from the date of purchase as a new product from an authorized BIAMP Systems dealer under the following conditions. In the event the warranted BIAMP Systems product requires service during the warranty period, BIAMP Systems will repair or replace, at its option, defective materials, provided you have identified yourself as the original purchaser of the product to any authorized BIAMP Systems Service Center. Transportation and insurance charges to and from an authorized Service Center or the BIAMP Systems factory for warranted products or components thereof to obtain repairs shall be the responsibility of the purchaser. [. . . ]