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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter

Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter
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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 1

The Models 2015-P and 2016-P Audio Analyzing Digital Multimeters and the Models 2015 and 2016 Total Harmonic Distortion Multimeters combine audio band quality measurements and analysis with a full-function 6½-digit DMM. Test engineers can make a broad range of voltage, resistance, current, frequency, and distortion measurements, all with the same compact, half-rack measurement instrument. The Model 2016 and 2016-P have twice the sine wave generator output of the Model 2015 for applications that require test signals greater than 8Vrms. The Model 2015-P and 2016-P offer additional processing capacity for frequency spectrum analysis. • THD, THD+Noise, and SINAD measurements • 20Hz–20kHz sine wave generator • Fast frequency sweeps • 2015-P, 2016-P: Identifies peak spectral components • 2015, 2015-P: 4Vrms singleended or 8Vrms differential output Frequency Domain Distortion Analysis For applications such as assessing non-linear distortion in components, devices, and systems, DSPbased processing allows the Models 2015-P, 2015, 2016, and 2016-P to provide frequency domain analm ysis in conventional time domain instru ents. They can measure Total Harmonic Distortion (THD) over the complete 20Hz to 20kHz audio band. They also measure over a wide input range (up to 750Vrms) and have low residual distortion (–87dB). The THD reading can be expressed either in decibels or as a percentage. In addition to THD, the Models 2015, 2015-P, 2016, and 2016-P can com ute THD+Noise and Signalp to-Noise plus Distortion (SINAD). For analyses in which the individual harmonics are the criteria of greatest interest, the instruments can report any of the (up to 64) harmonic magnitudes that can be included in the distortion measurements. The user can program the actual number of harmonics to be included in a computation, so accuracy, speed, and complexity can be optimized for a specific application. (See Figure 1.) Figure 1. Frequency Spectrum of 1kHz Square Wave 0.35 • 2016, 2016-P: 9.5Vrms singleended or 19Vrms differential output • Individual harmonic magnitude measurements • 5 standard audio shaping filters • 13 DMM functions (6½ digits) • GPIB and RS-232 interfaces Applications • Wireless communication device audio quality testing • Component linearity testing • Lighting and ballast THD limit conformance testing • Telephone and automotive speaker testing Audio analyzing and total harmonic distortion DMMs 6½-Digit THD Multimeters 6½-Digit Audio Analyzing Multimeters Figure 1 shows a plot of a square wave’s harmonics (frequency components) computed and transmitted to a personal computer by the Model 2015 or 2016. A square wave’s spectral content consists of only odd harmonics whose magnitudes are (1/harmonic number × the magni ude of the fundamental). For example, the magnitude of the third harmonic is 1⁄3 the t magnitude of the fundamental. 1.888.KEITHLEY (U.S. only) www.keithley.com A Greater Measure of Confidence DIGITAL MULTIMETERS & SYSTEMS Audio analyzing and total harmonic distortion DMMs

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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 2

Ordering Information Figure 3. THD and 2nd, 3rd, and 4th Harmonics as a Function of Frequency 0 Audio analyzing and total harmonic distortion DMMs Total Harmonic Distortion 6½-Digit Multimeter 2015-P Audio Analyzing DMM 2016 Total Harmonic Distortion 6½-Digit DMM w/9V Source Output 2016-P Audio Analyzing DMM w/9V Source Output 6½-Digit THD Multimeters 6½-Digit Audio Analyzing Multimeters THD: –10 Levels relative to fundamental: 2nd harmonic 3rd harmonic 4th harmonic relative output level (db) Accessories Supplied Model 1751 Safety Test Leads, User Manual, Service Manual. Figure 2. Total...

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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 3

6½-Digit THD Multimeters 6½-Digit Audio Analyzing Multimeters Figure 5d. C—Message Weighting Filter The Models 2015 and 2015-P have a 4Vrms single-ended output and 8Vrms differential source output. For tests that require a higher stimulus signal, the Model 2016 and 2016-P provide a 9.5Vrms single-ended output and a 19Vrms differential output. CCIR Weighting Filter Wide Selection of Audio Filters Five industry-standard bandpass filters are provided for shaping the input signal for audio and tele om u icaion applications. Available filters c m n t include the CCITT weighting filter, CCIR...

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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 4

DIGITAL MULTIMETERS & SYSTEMS Spectrum Analysis The Model 2015-P and 2016-P have internal computational capabilities that allow them to characterize an acquired signal spectrum. These instruments can identify and report the frequency and amplitude of the highest value in a complete spectrum or within a specified frequency band. It can also identify additional peaks in descending order of magnitude (see Figure 6). The Model 2015-P’s and 2016-P’s on-board capabilities make it simple to obtain a thorough analysis of a frequency spectrum more quickly and with little or no need for external...

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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 5

6½-Digit THD Multimeters 6½-Digit Audio Analyzing Multimeters Generator Characteristics THD and individual harmonic magnitudes Source Output: Waveform: Sinewave. Amplitude Range: Inv/Pulse Output (Sinewave Mode): Distortion Measurement Audio Filters None C-Message CCITT Weighting CCIR/ARM CCIR “A” Weighting Number of Harmonics Included in THD Calculation: 2 to 64 (user selectable). HI and LO Cutoff Filters (bus settable): 20Hz–50kHz. Can be combined to form brickwall bandpass filter. Distortion Measurement Reading Rate3 Fundamental Minimum Frequency Fundamental Readings Acquisition...

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Models 2015 and 2015-P 6-1/2 Digit THD Multimeters and Models 2016 and 2016-P 6-1/2 Digit Audio Analyzing Multimeter - 6

6½-Digit THD Multimeters 6½-Digit Audio Analyzing Multimeters Accuracy: ±(ppm of reading + ppm of range) (ppm = parts per million) (e.g., 10ppm = 0.001%) Conditions: MED (1 PLC)1 or SLOW (10 PLC) or MED (1 PLC) with filter of 10. Function Voltage Test Current or Burden Voltage (±5%) DC Operating Characteristics 2 Function DCV (all ranges), DCI (all ranges), 2W Ohms (<10M ranges) DC System Speeds 2, 6 Range Change : 50/s. Function Change 3: 45/s. Autorange Time 3, 10: <30ms. ASCII readings to RS-232 (19.2k baud): 55/s. Max. internal trigger rate: 2000/s. Max. external trigger rate: 400/s. 3...

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