Atec Keithley-2015-16 User Manual download pdf

www.keithley.com

1.888.KEITHLEY

(U.S. only)

A GR

TER M

EASU

RE OF CONFIDENCE

Audio Analyzing and Total Harmonic Distortion DMMs

DIGITAL MULTIMETERS & SYSTEMS

2015, 2015-P, 6

⁄

-Digit THD Multimeters

2016, 2016-P 6

⁄

-Digit Audio Analyzing Multimeters

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 6

⁄2-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 instru-

ment. 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 addi-

tional processing capacity for frequency spectrum

analysis.

Frequency Domain Distortion Analysis

For applications such as assessing non-linear distor-

tion in components, devices, and systems, DSP-

based processing allows the Models 2015-P, 2015,

2016, and 2016-P to provide frequency domain

analysis in conventional time domain instruments.

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 compute THD+Noise and Signal-

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.)

APPLICATIONS

• Wireless communication device

audio quality testing

• Component linearity testing

• Lighting and ballast THD limit

conformance t

esting

• Telephone and automotive

speaker testing

• 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 single-

ended or 8Vrms differential

output

• 2016, 2016-P: 9.5Vrms single-

ended or 19Vrms differential

output

•

Individual harmonic magnitude

measurements

•

5 standard audio shaping ﬁ

lters

• 13 DMM functions (6

⁄2 digits)

0.05

0.1

0.15

0.2

0.25

0.3

0.35

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Harmonic

Ratio to

Fundamental

Figure 1. Frequency Spectrum of 1kHz Square Wave

Figure 1 shows a plot of a square wave’s harmonics (frequency components) comput

ed and

transmitt

ed to a personal comput

er by the Model 2

15 or 2016. A square wave’s spectral content

consists of only odd harmonics whose magnitudes are (1/harmonic number

× the magnitude of

the fundamental). F

or example, the magnitude of the third harmonic is

⁄

the magnitude of the

fundamental.

1 2 3 4 5 6

Summary of Contents

Page 1 - 2016, 2016-P 6

www.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCEAudio Analyzing and Total Harmonic Distortion DMMs31DIGITAL MULTIMETERS &

Page 2

www.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCE32DIGITAL MULTIMETERS & SYSTEMSOptimized for Production TestingThe Models

Page 3 - 2016, 2016-P

www.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCEAudio Analyzing and Total Harmonic Distortion DMMs33DIGITAL MULTIMETERS &

Page 4

www.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCEAudio Analyzing and Total Harmonic Distortion DMMs34DIGITAL MULTIMETERS &

Page 5

www.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCEModel 2015, 2015-P, 2016, 2016-P Speciﬁcations35DIGITAL MULTIMETERS & SYST

Page 6

Model 2015, 2015-P, 2016, 2016-P Speciﬁcationswww.keithley.com1.888.KEITHLEY(U.S. only)A GREATER MEASURE OF CONFIDENCE36DIGITAL MULTIMETERS & SYST

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Atec Keithley-2015-16 User Manual

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