Minilyzer ML1 User Manual

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Measurement Functions Zoom (Y-Axis): The scaling of the spectrum’s Y-axis (sensitivity) is fixed and may be adjusted manually. • Select the zoom (Y-axis) field and press the enter key. • Use the up/down keys to scroll the displayed level along the Yaxis and the left/right keys zoom out/in the Y-axis, e.g. alter the resolution of the division. Time Constant: The time constant corresponds to the integration time of the 1/3 rd octave recording. It may be set to five value: 0.2 / 0.5 / 1.0 / 2.0 / 5.0 seconds. A lower time constant results in a quicker, more ‘nervous' display, whilst a higher time constant ‘averages’ more samples, thus providing a more stable spectrum. Bargraph: Below the spectrum, the fullband input RMS level (20 Hz - 20 kHz) is indicated by a bargraph without auto ranging. Select the different indication ranges by moving the cursor to the left or right arrow below RNGE and press enter. The available ranges are: • -120 to -20 dBu, residual noise of <strong>ML1</strong> < -120dBu (
Measurement Functions To enter the 1/3 rd OCTAVE SPL mode (Fig 3.20), select 1/3 rd OCT. -> SPL in the measurement functions submenu. Arrow readout: The arrow readout displays the frequency and the level of the 1/3 rd octave band that it points to. The arrow automatically points to the highest level in the 1/3 rd octave spectrum, or, alternatively may be controlled manually. Arrow Mode: The arrow readout may be moved manually to a certain specific 1/3 rd octave band. • Select the arrow mode field and press the enter key. • Move the arrow to any frequency by using the left/right keys. run/pause: The 1/3 rd octave spectrum may be freezed. • Select the run/pause field and press the enter key. • The1/3 rd octave spectrum is freezed. • The arrow mode or zoom symbol may be selected for the detailed read out of the 1/3 rd octave spectrum. • At selecting any other field the measurement will be continued. • Press the enter key again to continue the measurement. Zoom (Y-Axis): The scaling of the spectrum’s Y-axis (sensitivity) is fixed and may be adjusted manually. • Select the zoom (Y-axis) field and press the enter key. • Use the up/down keys to scroll the displayed level along the Yaxis and the left/right keys zoom out/in the Y-axis, e.g. alter the resolution of the division. Time Constant: The time constant corresponds to the integration time of the 1/3 rd octave recording. It may be set to five value: 0.2 / 0.5 / 1.0 / 2.0 / 5.0 seconds. A lower time constant results in a quicker, more ‘nervous' display, whilst a higher time constant ‘averages’ more samples, thus providing a more stable spectrum. Bargraph: Below the spectrum, the actual sound pressure level is indicated by a bargraph. Select the different indication ranges by moving the cursor to the left or right arrow below RNGE and press enter. The available bargraph ranges are: • 20 - 100 dB SPL • 40 - 120 dB SPL • 60 - 140 dB SPL 39
Page 1 and 2: Minilyzer ML1 User Manual
Page 3 and 4: TAble of CoNTeNTs: 1. In t r o d u
Page 5 and 6: egistration Register as a customer
Page 7 and 8: Warnings Introduction In order to a
Page 9 and 10: attery replacement Introduction Aft
Page 11 and 12: Power ON/OFF - Backlight The yellow
Page 13 and 14: Menu bar Basic Operation The menu b
Page 15 and 16: c. setup Basic Operation The setup
Page 17 and 18: Inputs and Monitor output On top of
Page 19 and 20: actual range or the up/down keys to
Page 21 and 22: Measurement Functions start of meas
Page 23 and 24: By exceeding the primary indicator
Page 25 and 26: c. Calibration Panel Measurement Fu
Page 27 and 28: THd+N Measurement Functions In this
Page 29 and 30: The following examples explain the
Page 31 and 32: An overrange indicator appears for
Page 33 and 34: sweep ML1 supports two sweep modes:
Page 35 and 36: . Time Sweep In the TIME SWEEP mode
Page 37: 1/3 rd Octave RMS The 1/3 rd OCTAVE
Page 41 and 42: 4. INDUCTION LOOP MODE (OPTIONAL) T
Page 43 and 44: Calibration An induction loop recei
Page 45 and 46: fsweep Frequency Sweep recording; P
Page 47 and 48: 6. ACCessorIes Minispl The MiniSPL
Page 49 and 50: Technical Specification 7. TeCHNICA
Page 51 and 52: Technical Specification Technical D
Page 53: Menu bar Measurement display escape

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