2015, 2016
2015-P
6
1
⁄
2
-Digit THD Multimeters
6
1
⁄
2
-Digit Audio Analyzing Multimeter
Audio analyzing and Total Harmonic Distortion DMMs
D I G I T A L M U LT I M E T E R S
The Model 2015-P Audio Analyzing Digital
Multimeter and the Models 2015 and 2016 Total
Harmonic Distortion Multimeters combine audio
band quality measurements and analysis with a full-
function 6
1
⁄
2
-digit DMM. Test engineers can make a
broad range of voltage, resistance, current, fre-
quency, and distortion measurements, all with the
same compact, half-rack measurement instrument.
The Model 2016 has twice the sine wave generator
output of the Model 2015 for applications that
require test signals greater than 8Vrms. The Model
2015-P offers additional processing capacity for fre-
quency spectrum analysis.
Frequency Domain Distortion
Analysis
For applications such as assessing non-linear dis-
tortion in components, devices, and systems, DSP-
based processing allows the Models 2015-P, 2015,
and 2016 to provide frequency domain analysis in
conventional time domain instruments. They can
measure Total Harmonic Distortion (THD) over a
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-P, 2015, and 2016 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 distor-
tion measurements. The user can program the actual number of harmonics to be included in a computa-
tion, so accuracy, speed, and complexity can be optimized for a specific application.
Optimized for Production Testing
The Models 2015-P, 2015, and 2016 can perform fast frequency sweeps for characterizing audio-band cir-
cuitry in production test systems. For example, the instruments can execute a single sweep of 30 frequen-
cies and transmit both rms voltage readings and THD readings to a computer in only 1.1 seconds. With
that data, a complete frequency response analysis and a harmonic distortion vs. frequency analysis can be
performed in a very short time. Thus high speed testing of the audio performance of a high volume
device such as a cellular telephone can be performed without reducing the number of tests or reducing
the measurements in each test. With these instruments, which are optimized for production testing, test
engineers can lower test times, in comparison to test speeds achievable with general purpose audio ana-
lyzers, without sacrificing production test quality.
Dual Output Source
The Models 2015-P, 2015, and 2016 include an
internal audio band sine wave source for generat-
ing stimulus signals. A second output, the inverse
of the first output, is also available, simplifying the
testing of differential input circuits for common
mode or noise cancellation performance.
The Models 2015 and 2015-P have a 4Vrms single-
ended output and 8Vrms differential source out-
put. For tests that require a higher stimulus signal,
the Model 2016 provides a 9.5Vrms single-ended
output and a 19Vrms differential output.
•
THD, THD+Noise, and SINAD
measurements
•
20Hz–20kHz sine wave
generator
•
Fast frequency sweeps
•
2015-P: Identifies peak spectral
components
•
2015: 4Vrms single-ended or
8Vrms differential output
•
2016: 9.5Vrms single-ended or
19Vrms differential output
•
Individual harmonic magnitude
measurements
•
5 standard audio shaping filters
•
13 DMM functions (6
1
⁄
2
digits)
APPLICATIONS
• Wireless communication device
audio quality testing
• Component linearity testing
• Lighting and ballast THD limit
conformance testing
• Telephone and automotive
speaker testing
1.888.KEITHLEY
(U.S. only)
www.keithley.com
A
G R E A T E R
M E A S U R E
O F
C O N F I D E N C E
ETC [ ETC ]
