klark teknik DN6000 Manual电路图.pdf

DN6000 User Manual CONTENTS: INTRODUCTION 2 INSTRUMENT FAMILIARISATION 3 FREQUENCY ANALYSYS MODE 7 MEMORY RECALL MODE 9 UTILITIES IN FREQUENCY ANALYSIS MODE 10 TIME ANALYSYS MODE 15 UTILITIES IN TIME ANALYSIS MODE 18 TECHNICAL SPECIFICATION 23 RadioFans.CN 收音机爱 好者资料库 2 Introduction Thank you for using this Klark-Teknik Product To obtain maximum performance from this precision electronic product, please study these instructions carefully. Installation and operating the DN6000 is not complicated, but the flexibility provided by its operating features merits familiarisation with its controls and connections. This unit has been prepared to comply with the power supply requirements that exist in your location. Precautions Do not install this unit in a location subjected to excessive heat, dust or mechanical vibrations. Power Connection Connection is made by means of an IEC standard power socket. The rear panel voltage label indicates the voltage required for satisfactory operation of the unit. Before connecting this unit to the mains supply, ensure the fuse fitted is the correct type and rating, as indicated on the rear panel, adjacent to the fuse holder. Safety Warning This unit is fitted with 3-pin power socket: For safety reasons the earth lead should not be disconnected. To prevent shock or fire hazard, do not expose the unit to rain or moisture. To avoid electrical shock do not remove covers. Refer servicing to qualified personnel only. After you have unpacked the unit Save all the packing materials - they will prove valuable should it become necessary to transport or ship this product. Please inspect this unit carefully for any signs of damage incurred during transportation. It has undergone stringent quality control inspection and tests prior to packing and left the factory in perfect condition If, however, the unit shows any signs of damage, notify the transportation company without delay. Only you, the consignee, may institute a claim against the carrier for damage during transportation. If necessary, contact your supplier or as a last resort, your Klark-Teknik importing agent*, who will fully co-operate under such circumstances. RadioFans.CN 收音机爱 好者资料库 3 INSTRUMENT FAMILIARISATION Front View Rear View Display The LCD display features a large graphics area, flanked by titles for the 4 menu switches at the right hand end, and measurement information in a Status Column at the left hand end. Numeric display The 3 x 7 segment LED Numerical display gives a constantly updated read out of the level at the cursor position, visible at a distance. RadioFans.CN 收音机爱 好者资料库 4 Menu switches Four menu switches allow instant selection of various functions, depending on the mode of the analyser. Rotary Encoder A single rotary encoder allows continuous adjustment of any selected function or measurement parameter. When nothing is selected, the encoder controls the movement of a cursor across the graphic area of the display. The Numerical display gives a constant read out of the level at the cursor position. With peak hold active, the level of the held peak is given. With peak hold inactive, the level of the column is given. The lowest line of the status column shows the frequency or time interval at the cursor position. Mic XLR: The input signal from a microphone is accepted on a standard XLR socket on the front panel. The DN6000 has a 48v phantom supply. The mic input sensitivity can be adjusted internally to calibrate the unit for a particular Klark Teknik 6051 microphone or the recommended Bruel normally open. Source Switch: Press and hold the source switch to switch between microphone input (front panel) and line inputs (rear panel). For line inputs, all measurements are in dBu, where 0dBu = 0.775 volts. For microphone input, all measurements are in dB SPL (Sound Pressure Level) where 0dB SPL = 2 x 10-5 N/m2. In Frequency analysis mode, with mic input selected, a single press toggles between 1/3 Octave and 1/6 octave spectrum analysis. With line inputs selected, single presses switch between stereo 1/3 octave, mono 1/3 octave and mono 1/6 octave spectrum analysis. Weighting Switch: Successive presses of the weighting switch cycle the unit through 3 input filter options: A weighting, C weighting and un-weighted. Peak Hold: Pressing the peak hold switch activates or deactivates the peak hold function. When peak hold is active, horizontal marks on the display show the highest level reached by each column. The peaks are held in memory when peak hold is deactivated. To clear the held peaks, press and hold the peak hold switch for 3 seconds. Source Switch Weighting Switch Peak Hold 6 Frequency Switch: Press to select frequency mode. In this mode, the graphic area of the display shows a graph of level against frequency. This allows for conventional spectrum analysis and continuous monitoring of signal level in dB SPL (sound pressure level) or dBu. Time Switch: Press to select time mode. In this mode the graphic area of the display shows a graph of level against time. This allows for measurement of RT60 (reverberation time), delay time, Leq (equivalent sound pressure level) and Let (equivalent sound dose). Utilities Switch: Pressing this switch calls up a utilities menu in either Frequency or Time modes. Press the switch again to exit the utilities menu. Run switch: Press the run switch to activate or deactivate a measurement. Active run status is indicated by a green LED. Mute switch: Press this switch to mute or un-mute the test signal output. A muted output is indicated by the red LED. Store Switch: Press the store switch to store the current measurement on the display to the currently addressed memory. The new measurement may be accumulated to the addressed memory or may overwrite it and increment the address. See memory sub menu for details. Frequency Time Utility Run Mute Store Switch 7 Frequency Analysis Mode: These functions are available in frequency analysis mode. To enter frequency analysis mode, press the Frequency switch. 1. Press the Level switch to select the input reference level for adjustment. Adjust the reference level with the rotary encoder. The current input reference level is shown at the top of the status column. The input level can rise 12 dB above the top of the display without clipping the A to D converter. Options are: dBu dB SPL 40 140 30 130 Note: Clipping of the input circuit at any frequency 20 120 affects measurements at all other frequencies, and 10 110 hence is indicated by a large on-screen warning. 0 100 -10 90 -20 80 -30 70 -40 60 -50 50 2. Press the Scale switch to select the display scale for adjustment. Adjustment the display scale with the rotary encoder. The current display scale (the distance in dB between the top and bottom of the graphic display) is shown on the second line of the status column. Options are: 60dB 30dB Note: On the 6dB scale, the display has a resolution 20dB of 10 pixels per dB. The accuracy of the analyser, 15dB however, is still restricted to +/-0.3 dB. 10dB 6dB 8 3. Press the Resp. Time switch to select the response time of the display for adjustment. Adjust the response time with the rotary encoder. The current response time (the duration of measurement, and hence the duration of each column before it is updated) is shown on the third line of the status column. Options are: 10 mS 35 mS (I) IEC 651 “Impulse” response 125 mS (F) IEC 651 “Fast” response 250 mS 1 S (S) IEC 651 “Slow” response 2 S 5 S 10 S 20 S Note: The height of each column on the display indicates the Average or Peak level measured over the previous response time period. 9 Memory Recall Mode: Press the Memory switch to enter the memory sub menu. The memory sub-menu options are: Recall Compare Over / Ac00 Exit Use the rotary encoder to scroll through the memory addresses. The contents of the addressed memory are displayed on the graphic area. Press the Recall switch to recall the addressed memory to the main display. The cursor can then be used to examine the measurement data in detail. The view can also be adjusted via the Level and Scale controls. Press the Compare switch to recall the addressed memory to the main screen interleaved with the current measurement, whether run is on or off. Press Memory again to clear the compare function. Press the Over / Ac to switch each memory between Accumulate and Overwrite modes. When Store is pressed in Accumulate mode, the new measurement data is averaged with the existing data in the memory. A true average of all the accumulated data is calculated. The number next to Ac shows the total number of accumulations in the current memory position. When Store is pressed in Overwrite mode, the new data overwrites any old data in the memory, and the memory address is increased by one. Press Exit to return to the main display and main menu. 10 Utilities In Frequency Analysis Mode: The Frequency Utilities menu is called up by pressing the Utilities switch while in Frequency mode. Frequency Utilities options are: Press Output to access the Output sub menu and set up the output test signal. Press Display to access the display sub menu and set up the LCD display. See below. Press Print to access the Print sub menu and create a print out. See below. Output Signal Sub Menu: By pressing Output while in the Frequency Utilities menu the output sub menu may be accessed. The options are: Press Sine. to select a sine wave test signal and to call up the Sine sub menu. Press Noise. to select a pink noise test signal and to call up the pink noise sub menu. Press Sweep. to call up the sweep sub menu to configure and trigger a frequency sweep. 4. Press Exit to return to the Frequency Utilities menu. 11 Sine Wave Sub Menu: The Sine wave sub menu is called up by pressing the Sine. switch in the Output sub menu. Sine sub menu options are: Press Frequency to select the sine wave frequency for adjustment. Adjust the frequency with the rotary encoder. Frequency of the test signal is shown in the status column. Press Level to select the test signal output level for adjustment. Adjust the output level with the rotary encoder. Output level is shown in the status column, and has a range of -40 to +4 dBu. Press Gate Time to set the gate time of the test signal. Adjust the gate time with the rotary encoder. Gate time is shown in the status column. When Gate time is set to Cont., the test signal output is under manual control. It can be switched off and on by use of the Mute switch. When gate time is set to anything other than Cont. The normal state of the unit is muted. When the mute switch is pressed, the test signal is present for the set gate time, after which it is muted again. Options are: 100 mS 200 mS 500 mS 1 S 2 S 5 S 10 S Cont Note: Sine wave bursts always start and stop on a zero crossing. The gate time setting is therefore less accurate for low frequency settings. Press Exit to return to the Utilities menu. 12 Noise Sub Menu: The Noise sub menu is called up by pressing the Noise. switch in the Output sub menu. Noise sub menu options are: Press Filter to cycle through the bandwidth options for the pink noise output. These options are full bandwidth, 1 octave bandwidth and 1/3 octave band width. Adjust the centre frequency of the filter with the rotary encoder. The bandwidth and Frequency of the test signal are shown in the status column. Press Level to select the test signal output level for adjustment. Adjust the output level with the rotary encoder. Output level is shown in the status column, and has a range of -40 to +4dBu. Press Gate Time to set the gate time of the test signal. Adjust the gate time with the rotary encoder. Gate time is shown in the status column. When Gate time is set to Cont., the test signal output is under manual control. It can be switched off and on by use of the Mute switch. When gate time is set to anything other than Cont. The normal state of the unit is muted. When the mute switch is pressed, the test signal is present for the set gate time, after which it is muted again. Options are: 100 mS 200 mS 500 mS 1 S 2 S 5 S 10 S Cont Press Exit to return to the Utilities menu. 13 Sweep Sub Menu: The Sweep sub menu is called up by pressing the Sweep. switch in the Output sub menu. Options are: Press Start f to select the start frequency of the sweep for adjustment. Adjust start frequency with the rotary encoder. The frequency is shown in the status column. Press Stop f to select the stop frequency of the sweep for adjustment. Adjust stop frequency with the rotary encoder. The frequency is shown in the status column. Press Level to select the sweep signal output level for adjustment. Adjust the output level with the rotary encoder. Output level is shown in the status column, and has a range of -40 to +4dBu. Press the Run switch while in the Sweep sub menu to initiate a frequency sweep. The test signal will sweep between the set start and stop frequencies at a rate dependant on the Response Time set for the main display. Run will switch off at the end of the sweep, so that the frequency spectrum captured during the sweep is frozen on the display. As the start and stop frequencies can be set anywhere in relation to each other, the sweep can move up or down the frequency range. Press Exit to return to the Utilities menu. 14 Display sub menu: The Display sub menu is called up by pressing the display switch in the Frequency Utilities menu. Options are: Press Ave Peak to select average or peak response. When set to average response, the spectrum analyser columns represent the average signal level at that frequency over the previous response time interval. When set to peak response, the spectrum analyser columns represent the peak or maximum signal level at that frequency over the previous response time interval. Press Sum / Diff to cycle through the three options for dual channel and memory compare display. With neither Sum nor Diff selected, the graphic area shows the two channels side by side. With Sum selected, the graphic area shows the sum (A+B) of the two channels. With Diff selected, the graphic area shows the difference of the two channels (A-B). Press LCD. to select the LCD sub menu for adjustment. See below. Press Exit to return to the Utilities menu. 15 Time Analysis Mode To enter time analysis mode, press the Time switch. The graphic display shows a graph of level against time for the most recent measurement in the form of 180 columns. The period of time represented by each column, and hence the total time represente