DIGITAL MULTIMETERS & SYSTEMS
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY (U.S. only)
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 measure-
ment 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.
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 anal-
ysis in conventional time domain instru ments. 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 pute 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 testing
• 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 filters
•13 DMM functions (6½ digits)
•GPIB and RS-232 interfaces
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
2345678910 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) 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 tude of the fundamental). For example, the magnitude of the third harmonic is
1
⁄
3
the
magnitude of the fundamental.
2015, 2015-P,
2016, 2016-P
6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
Audio analyzing and total harmonic distortion DMMs
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A Greater Measure of Confidence
Optimized for Production Testing
The Models 2015, 2015-P, 2016, and 2016-P can perform fast frequency sweeps for characterizing
audio-band circuitry in production test systems. For example, the instruments can execute a single
sweep of 30 frequencies 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 analyzers, without sacrificing production test quality.
Dual Output Source
The Models 2015, 2015-P, 2016, and 2016-P include an internal audio band sine wave source for gen-
erating 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.
Device Under Test
Input
Transducer
Model 2015, 2015-P, 2016, or 2016-P
Signal
Input
Source
Output
2015 MULTIMETER
Output
Transducer
Figure 2. Total Harmonic Distortion
Analysis and Frequency
Response of a Portable
Wireless Telecommunication
Device
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
1001000 10000
Frequency (Hz)
Relative
Output
Level
(dB)
THD:
Levels relative to fundamental:
2nd harmonic
3rd harmonic
4th harmonic
Figure 3. THD and 2nd, 3rd, and 4th Harmonics as a Function of Frequency
–20
–15
–10
–5
0
5
10
1001000 10000
Frequency (Hz)
Relative
Output
(dB)
Figure 4. Frequency Response
Figures 2, 3, and 4 demonstrate how the
Model 2015, 2015-P, 2016, or 2016-P can
provide both time domain and frequency
domain measurements in a single test
protocol. Figure 2 shows a sample test
system schematic with a telecommunication
device in a loop back mode test. The Audio
Analyzing DMM’s source provides a stimulus
frequency sweep, and the Audio Analyzing
DMM measures the response from the
microphone circuit. Figure 3 shows the
resulting frequency domain analysis of
the THD and the first three harmonics as a
function of frequency. Figure 4 shows the
time domain analysis of micro phone circuit
output voltage as a function of frequency.
Ordering Information
2015 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
Accessories Supplied
Model 1751 Safety Test Leads,
User Manual, Service Manual.
2015, 2015-P,
2016, 2016-P
6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
Audio analyzing and total harmonic distortion DMMs
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY (U.S. only)
CCIR Weighting Filter
—60
—50
—40
—30
—20
—10
0
10
20
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)
Figure 5c.
CCITT Weighting Filter
—70
—60
—50
—40
—30
—20
—10
0
10
10 100 1000 10000
Frequency (Hz)
Gain (dB)
Figure 5d.
CCIR/ARM
—60
—50
—40
—30
—20
—10
0
10
20
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)
Figure 5e.
C—Message Weighting Filter
—60
—50
—40
—30
—20
—10
0
10
20
10 100 1000 10000
Frequency (Hz)
Gain (dB)
Figure 5a.
A Weighting Filter
—60
—50
—40
—30
—20
—10
0
10
20
10 100 1000 10000 100000
Frequency (Hz)
Gain (dB)
Figure 5b.
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.
Wide Selection of Audio Filters
Five industry-standard bandpass filters are provided for shaping the input
signal for audio and tele com mu nica tion applications. Available filters
include the CCITT weighting filter, CCIR filter, C-message filter, CCIR/ARM
filter, and “A” weighting filter (see Figures 5a–5e). The Models 2015,
2015-P, 2016, and 2016-P provide programmable, high cutoff (low pass) and
low cutoff (high pass) filters. Furthermore, the two filters can be implemented
together to form a bandpass filter. The programmable filters can be used to
filter out noise generated by electromechanical machinery on the production
floor or to simulate other types of system transmission charac teristics.
Broad Measurement Flexibility
In addition to their THD, THD+Noise, SINAD, and individual har monic
measure ment capabilities, the instruments provide a compre hen sive set of
DMM functions, including DCV, ACV, DCI, ACI, 2WW, 4WW, temperature,
frequency, period, dB, dBm, and continuity measure ments, as well as
diode testing. This multi-functional design minimizes added equipment
costs when config uring test setups.
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
Audio analyzing and total harmonic distortion DMMs
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A Greater Measure of Confidence
Wide Band or Narrow Band
Noise Measurements
The Models 2015, 2015-P, 2016, and 2016-P are
capable of measuring both wide band noise
and narrow band noise. Alternatively, these
instruments’ DSP (digital signal processing)
capabilities allow users to make frequency
domain measurements of RMS voltage noise
over the 20Hz–20kHz frequency audio band or a
narrow portion of the band. Furthermore, noise
measurements can be extracted in the presence
of a stimulus signal for fast signal-to-noise
computations.
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
analysis software.
Frequency Spectrum
Magnitude (dBV)
–20
–40
–60
–80
–100
–120
1.0kHz 1.1kHz 1.2kHz 1.3kHz 1.4kHz
Frequency
Between 1.0kHz and 1.4kHz
Maximum
2nd peak
3rd peak
4th peak
Maximum right of 4th peak
Maximum left of 4th peak
Figure 6. The Model 2015-P and 2016-P directly identify peak values of the frequency
spectrum.
ACCESSORIES AVAILABLE
CABLES/ADAPTERS
7007-1 Shielded IEEE-488 Cable, 1m (3.3 ft)
7007-2 Shielded IEEE-488 Cable, 2m (6.6 ft)
8501-1, 8501-2 Trigger-Link Cables, 1m (3.3 ft), 2m (6.6 ft)
8502 Trigger Link Adapter Box
8503 Trigger Link Cable to 2 male BNCs, 1m (3.3 ft)
7009-5 RS-232 Cable
RACK MOUNT KITS
4288-1 Single Fixed Rack Mount Kit
4288-2 Dual Fixed Rack Mount Kit
GPIB INTERFACES
KPCI-488LPA IEEE-488 Interface/Controller for the PCI Bus
KUSB-488B IEEE-488 USB-to-GPIB Interface Adapter
Figure 7. Rear panel of all models
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
SERVICES AVAILABLE
2015-3Y-EW 1-year factory warranty extended to 3 years
from date of shipment
2015-P-3Y-EW 1-year factory warranty extended to 3 years
from date of shipment
2016-3Y-EW 1-year factory warranty extended to 3 years
from date of shipment
2016-P-3Y-EW 1-year factory warranty extended to 3 years
from date of shipment
C/2015-3Y-ISO 3 (ISO-17025 accredited) calibrations within 3
years of purchase for Models 2015, 2015-P*
C/2016-3Y-ISO 3 (ISO-17025 accredited) calibrations within 3
years of purchase for Models 2016, 2016-P*
*Not available in all countries
Audio analyzing and total harmonic distortion DMMs
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY (U.S. only)
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
DISTORTION CHARACTERISTICS
VOLTAGE RANGE: 100mV, 1V, 10V, 100V, 750V (user selectable).
INPUT IMPEDANCE: 1MW paralleled by <100pF.
DISPLAY RANGE: 0–100% or 0–100.00dB.
RESOLUTION: 0.0001% or 0.00001dB.
FUNDAMENTAL FREQUENCY RANGE: 20Hz–20kHz.
HARMONIC FREQUENCY RANGE: 40Hz–50kHz.
FREQUENCY RESOLUTION: 0.008Hz.
FREQUENCY ACCURACY: ±0.01% of reading.
FREQUENCY TEMPERATURE COEFFICIENT: ≤100ppm over operating temperature range.
Measurement Accuracy Residual
Mode (1 Year, 23°C ±5°C) Distortion1
THD and individual ±0.8 dB, 0.004% or –87 dB
harmonic magnitudes 20 Hz to 20 kHz2 20 Hz to 20 kHz
THD + n ±1.5 dB, 0.056% or –65 dB
100 Hz to 20 kHz2 20 Hz to 20 kHz
SINAD ±1.5 dB +65 dB
100 Hz to 20 kHz2 20 Hz to 20 kHz
AC Level ±(0.13% of reading +
V rms 0.009% of range)
20 Hz to 20 kHz
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 Frequency Per
Mode Range Second
Single acquisition 20 Hz to 100 Hz 14
or stored value 100 Hz to 1 kHz 24
1 kHz to 20 kHz 28
Automatic 20 Hz to 30 Hz 5.5
30 Hz to 400 Hz 6
400 Hz to 20 kHz 6.6
FREQUENCY SWEEP READING RATE
Number of Frequencies Time (seconds)4
5 0.2
30 1.1
100 3.5
200 6.9
NOTES
1. Input signal at full scale.
2. VIN ≥20% of range and harmonics > –65dB.
3. Speeds are for default operating conditions (*RST), and display off, auto range off, binary data transfer,
trig delay = 0.
4. Typical times: frequencies in 400–4kHz range, binary data transfer, TRIG DELAY = 0, Display OFF, Auto
Range OFF. Data returned is THD measurement plus AC voltage.
GENERATOR CHARACTERISTICS
FREQUENCY RANGE: 10–20kHz.
FREQUENCY RESOLUTION: 0.007Hz.
FREQUENCY ACCURACY: ±(0.015% of reading + 0.007Hz)1.
FREQUENCY TEMPERATURE COEFFICIENT: <100ppm over operating temperature range.
SOURCE OUTPUT:
WAVEFORM: Sinewave.
AMPLITUDE RANGE: 2015, 2015-P: 2V rms (50W and 600W) or 4V rms (HI Z).
2016, 2016-P: 4.75V rms (50W and 600W) or 9.5V rms (HI Z).
AMPLITUDE RESOLUTION: 2015, 2015-P: 0.5mV rms (50W and 600W) or 1mV rms (HI Z).
2016, 2016-P:
1.25mV rms (50W and 600W) or 2.5mV rms (HI Z).
AMPLITUDE ACCURACY: 2015, 2015-P: ±(0.3% of setting + 2mV)1, 4.
2016, 2016-P: ±(0.3% of setting + 5mV)1, 4.
AMPLITUDE TEMPERATURE COEFFICIENT: Typically 0.015%/°C.
AMPLITUDE FLATNESS: ±0.1dB1, 4, 5.
OUTPUT IMPEDANCE: 50W ± 1W or 600W ± 10W, user selectable.
THD: –64dB6.
NOISE: 2015, 2015-P: 100µV rms2.
2016, 2016-P: 250µV rms2.
DC OFFSET VOLTAGE: 2015, 2015-P: ±1.2mV1. 2016, 2016-P: ±3mV1.
INV/PULSE OUTPUT (SINEWAVE MODE):
FREQUENCY: Same as source output.
AMPLITUDE RANGE: 2015, 2015-P: 2V rms (50W and 600W) or 4V rms (HI Z).
2016, 2016-P: 4.75V rms (50W and 600W) or 9.5V rms (HI Z).
AMPLITUDE RESOLUTION: 2015, 2015-P: 0.5mV (50W and 600W) or 1mV rms (HI Z).
2016, 2016-P: 1.25mV rms (50W and 600W) or 2.5mV rms (HI Z).
AMPLITUDE ACCURACY: 2015, 2015-P: ±(2.0% of setting + 2mV)1, 4.
2016, 2016-P: ±(2.0% of setting + 5mV)1, 4.
AMPLITUDE FLATNESS: ±0.1dB1, 4, 5.
OUTPUT IMPEDANCE: Same as Source Output setting.
THD: –64dB6.
NOISE: 2015, 2015-P: 100µV rms2.
2016, 2016-P: 250µV rms2.
DC OFFSET VOLTAGE: 2015, 2015-P: ±1.1mV typ., ±13mV max.1
2016, 2016-P: ±3mV typ., ±13mV max.1
INV/PULSE OUTPUT (PULSE MODE):
FREQUENCY: Same as source output.
DUTY CYCLE: 45% ±3%.
OUTPUT IMPEDANCE: Same output impedance as the source output.
AMPLITUDE: 0.0V ±0.07V to 4.9V ±0.12V pulse open circuit1, 3.
0.0V ±0.05V to 3.3V ±0.08V pulse 100W load1, 3.
OVERSHOOT: 1.0V maximum pulse open circuit3.
0.2V maximum with 100W load pulse open circuit3.
UNDERSHOOT: 1.1V maximum pulse open circuit3.
0.45V maximum with 100W load pulse open circuit3.
NOTES
1. 1 year, 23°C ±5°C.
2. Measured at VOUT = 0V with gain 100 amplifier and 2-pole 50kHz low pass filter, Inv/Pulse in sinewave
mode, HI Z output impedance, and no load.
3. With HI Z output impedance and 1m 50W coaxial cable.
4. HI Z output impedance, no load.
5. 4V output.
6. THD measurement includes harmonics 2 through 5, 1V rms output, HI Z, no load.
Model 2015, 2015-P, 2016, 2016-P specifications
Model 2015, 2015-P, 2016, 2016-P specifications
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A Greater Measure of Confidence
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
DC Characteristics
CONDITIONS: MED (1 PLC)1 or SLOW (10 PLC) or MED (1 PLC) with filter of 10.
Accuracy: ±(ppm of reading + ppm of range)
(ppm = parts per million) (e.g., 10ppm = 0.001%) Temperature
Coefficient
0°–18°C & 28°–50°C
Function Range Resolution
Test Current or
Burden Voltage
(±5%)
Input
Resistance
24 Hour 14
23°C ± 1°
90 Day
23°C ± 5°
1 Year
23°C ± 5°
Voltage 100.0000 mV 0.1 µV > 10 GW30 + 30 40 + 35 50 + 35 2 + 6
1.000000 V 1.0 µV > 10 GW15 + 6 25 + 7 30 + 7 2 + 1
10.00000 V 10 µV > 10 GW15 + 4 20 + 5 30 + 5 2 + 1
100.0000 V 100 µV 10 MW ±1% 15 + 6 30 + 6 45 + 6 5 + 1
1000.000 V 9 1 mV 10 MW ±1% 20 + 6 35 + 6 45 + 6 5 + 1
Resistance 15 100.0000 W100 µW1 mA 30 + 30 80 + 40 100 + 40 8 + 6
1.000000 kW1 mW1 mA 20 + 6 80 + 10 100 + 10 8 + 1
10.00000 kW10 mW100 µA 20 + 6 80 + 10 100 + 10 8 + 1
100.0000 kW100 mW10 µA 20 + 6 80 + 10 100 + 10 8 + 1
1.000000 MW 16 1 W10 µA 20 + 6 80 + 10 100 + 10 8 + 1
10.00000 MW 11, 16 10 W700 nA // 10MW300 + 6 450 + 10 600 + 10 95 + 1
100.0000 MW 11, 16 100 W700 nA // 10MW1600 + 30 2000 + 30 2200 + 30 900 + 1
Current 10.00000 mA 10 nA < 0.15 V 60 + 30 300 + 80 500 + 80 50 + 5
100.0000 mA 100 nA < 0.03 V 100 + 300 300 + 800 500 + 800 50 + 50
1.000000 A 1 µA < 0.3 V 200 + 30 500 + 80 800 + 80 50 + 5
3.00000 A 10 µA < 1 V 1000 + 15 1200 + 40 1200 + 40 50 + 5
Continuity 2W 1 kW100 mW1 mA 40 + 100 100 + 100 120 + 100 8 + 1
Diode Test 3.00000 V 10 µV 1 mA 20 + 6 30 + 7 40 + 7 8 + 1
10.00000 V 10 µV 100 µA 20 + 6 30 + 7 40 + 7 8 + 1
10.00000 V 10 µV 10 µA 20 + 6 30 + 7 40 + 7 8 + 1
DC OPERATING CHARACTERISTICS 2
Function Digits Readings/s PLCs 8
DCV (all ranges),
DCI (all ranges),
2W Ohms (<10M ranges)
6½ 3, 4 510
6½ 3, 7 30 1
6½ 3, 5 50 1
5½ 3, 5 270 0.1
5½ 5 500 0.1
5½ 5 1000 0.04
4½ 5 2000 0.01
DC SYSTEM SPEEDS 2, 6
RANGE CHANGE3 : 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.
DC GENERAL
LINEARITY OF 10VDC RANGE: ±(1ppm of reading + 2ppm of range).
DCV,
W
, TEMPERATURE, CONTINUITY, DIODE TEST INPUT PROTECTION: 1000V, all ranges.
MAXIMUM 4W
W
LEAD RESISTANCE: 10% of range per lead for 100W and 1kW ranges; 1kW per
lead for all other ranges.
DC CURRENT INPUT PROTECTION: 3A, 250V fuse.
SHUNT RESISTOR: 0.1W for 3A, 1A, and 100mA ranges. 10W for 10mA range.
CONTINUITY THRESHOLD: Adjustable 1W to 1000W.
AUTOZERO OFF ERROR: Add ±(2ppm of range error + 5µV) for <10 minutes and ±1°C change.
OVERRANGE: 120% of range except on 1000V, 3A, and Diode.
SPEED AND NOISE REJECTION
Rate Readings/s Digits
RMS Noise
10V Range NMRR 12 CMRR 13
10 PLC 56½ < 1.5 µV 60 dB 140 dB
1 PLC 50 6½ < 4 µV 60 dB 140 dB
0.1 PLC 500 5½ < 22 µV —80 dB
0.01 PLC 2000 4½ < 150 µV —80 dB
DC NOTES
1. Add the following to ppm of range accuracy specification based on range:1V and 100V, 2ppm; 100mV, 15ppm;
100W, 15ppm; 1kW–1MW, 2ppm; 10mA and 1A, 10ppm; 100mA, 40ppm.
2. Speeds are for 60Hz operation using factory default operating conditions (*RST). Autorange off, Display off,
Trigger delay = 0.
3. Speeds include measurement and binary data transfer out the GPIB.
4. Auto zero off.
5. Sample count = 1024, auto zero off.
6. Auto zero off, NPLC = 0.01.
7. Ohms = 24 readings/second.
8. 1 PLC = 16.67ms @ 60Hz, 20ms @ 50Hz/400Hz. The frequency is automatically determined at power up.
9. For signal levels >500V, add 0.02ppm/V uncertainty for the portion exceeding 500V.
10. Add 120ms for ohms.
11. Must have 10% matching of lead resistance in Input HI and LO.
12. For line frequency ±0.1%.
13. For 1kW unbalance in LO lead.
14. Relative to calibration accuracy.
15. Specifications are for 4-wire ohms. For 2-wire ohms, add 1W additional uncertainty.
16. For rear inputs. Add the following to Temperature Coefficient "ppm of reading" uncertainty: 10MW 70ppm,
100MW 385ppm. Operating environment specified for 0° to 50°C, 50% RH at 35°C.
Model 2015, 2015-P, 2016, 2016-P specifications
Model 2015, 2015-P, 2016, 2016-P specifications
DIGITAL MULTIMETERS & SYSTEMS
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY (U.S. only)
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
True RMS AC Voltage and Current Characteristics
Accuracy 1: ±(% of reading + % of range), 23°C ±5 °C
Voltage Range Resolution Calibration Cycle 3 Hz– 10 Hz
10 10 Hz– 20 kHz 20 kHz– 50 kHz 50 kHz– 100 kHz 100 kHz– 300 kHz
100.0000 mV 0.1 µV
1.000000 V 1.0 µV 90 Days 0.35 + 0.03 0.05 + 0.03 0.11 + 0.05 0.60 + 0.08 4 + 0.5
10.00000 V 10 µV
100.0000 V 100 µV 1 Year 0.35 + 0.03 0.06 + 0.03 0.12 + 0.05 0.60 + 0.08 4 + 0.5
750.000 V 1 mV
Temperature
Coefficient/°C 8
0.035 + 0.003 0.005 + 0.003 0.006 + 0.005 0.01 + 0.006 0.03 + 0.01
Current Range Resolution Calibration Cycle 3 Hz–10 Hz 10 Hz–3 kHz 3 kHz–5 kHz
1.000000 A 1 µA 90 Day/1 Year 0.30 + 0.04 0.10 + 0.04 0.14 + 0.04
3.00000 A 9 10 µA 90 Day/1 Year 0.35 + 0.06 0.15 + 0.06 0.18 + 0.06
Temperature
Coefficient/°C 8
0.035 + 0.006 0.015 + 0.006 0.015 + 0.006
HIGH CREST FACTOR ADDITIONAL ERROR ±(% of reading) 7
CREST FACTOR: 1–2 2–3 3–4 4–5
ADDITIONAL ERROR: 0.05 0.15 0.30 0.40
AC OPERATING CHARACTERISTICS 2
Function Digits Readings/s Rate Bandwidth
ACV (all ranges),
and ACI (all ranges)
6½ 3 2s/reading SLOW 3 Hz–300 kHz
6½ 3 1.4 MED 30 Hz–300 kHz
6½ 4 4.8 MED 30 Hz–300 kHz
6½ 3 2.2 FAST 300 Hz–300 kHz
6½ 4 35 FAST 300 Hz–300 kHz
ADDITIONAL LOW FREQUENCY ERRORS ±(% of reading)
Slow Med Fast
20 Hz – 30 Hz 00.3 —
30 Hz – 50 Hz 0 0 —
50 Hz – 100 Hz 0 0 1.0
100 Hz – 200 Hz 0 0 0.18
200 Hz – 300 Hz 0 0 0.10
> 300 Hz 000
AC SYSTEM SPEEDS 2, 5
FUNCTION/RANGE CHANGE 6: 4/s.
AUTORANGE TIME: <3s.
ASCII READINGS TO RS-232 (19.2k baud) 4: 50/s.
MAX. INTERNAL TRIGGER RATE 4: 300/s.
MAX. EXTERNAL TRIGGER RATE 4: 260/s.
AC GENERAL
INPUT IMPEDANCE: 1MW ±2% paralleled by <100pF.
ACV INPUT PROTECTION: 1000Vp.
MAXIMUM DCV: 400V on any ACV range.
ACI INPUT PROTECTION: 3A, 250V fuse.
BURDEN VOLTAGE: 1A Range: <0.3V rms. 3A Range: <1V rms.
SHUNT RESISTOR: 0.1W on all ACI ranges.
AC CMRR: >70dB with 1kW in LO lead.
MAXIMUM CREST FACTOR: 5 at full scale.
VOLT HERTZ PRODUCT: ≤8 × 107V·Hz.
OVERRANGE: 120% of range except on 750V and 3A ranges.
AC NOTES
1. Specifications are for SLOW rate and sinewave inputs >5% of range.
2. Speeds are for 60Hz operation using factory default operating conditions (*RST). Auto zero off, Auto range off,
Display off, includes measurement and binary data transfer out the GPIB.
3. 0.01% of step settling error. Trigger delay = 400ms.
4. Trigger delay = 0.
5. DETector:BANDwidth 300, NPLC = 0.01.
6. Maximum useful limit with trigger delay = 175ms.
7. Applies to non-sinewaves >5Hz and <500Hz. (Guaranteed by design for crest factors >4.3.)
8. Applies to 0°–18°C and 28°–50°C.
9. For signal levels >2.2A, add additional 0.4% to "of reading" uncertainty.
10. Typical uncertainties. Typical represents two sigma or 95% of manufactured units measure <0.35% of reading
and three sigma or 99.7% <1.06% of reading.
Model 2015, 2015-P, 2016, 2016-P specifications
Model 2015, 2015-P, 2016, 2016-P specifications
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A Greater Measure of Confidence
Triggering and Memory
READING HOLD SENSITIVITY: 0.01%, 0.1%, 1%, or 10% of reading.
TRIGGER DELAY: 0 to 99 hrs (1ms step size).
EXTERNAL TRIGGER LATENCY: 200µs + <300µs jitter with autozero off, trigger delay = 0.
MEMORY: 1024 readings.
Math Functions
Rel, Min/Max/Average/StdDev (of stored reading), dB, dBm, Limit Test, %, and mX+b with user
defined units displayed.
dBm REFERENCE RESISTANCES: 1 to 9999W in 1W increments.
Standard Programming Languages
SCPI (Standard Commands for Programmable Instruments).
Frequency and Period Characteristics 1, 2
ACV
Range
Frequency
Range
Period
Range Gate Time
Resolution
±(ppm of
reading)
Accuracy
90 Day/1 Year
±(% of reading)
100 mV to
750 V
3 Hz to
500 kHz
333 ms
to 2 µs
1 s (SLOW) 0.333 0.01
0.1 s (MED) 3.33 0.01
10 ms (FAST) 33.3 0.01
FREQUENCY NOTES
1. Specifications are for square wave inputs only. Input signal must be >10% of ACV range. If input
is <20mV on the 100mV range, then the frequency must be >10Hz.
2. 20% overrange on all ranges except 750V range.
2015, 2015-P,
2016, 2016-P 6½-Digit THD Multimeters
6½-Digit Audio Analyzing Multimeters
Temperature Characteristics
Thermocouple 2, 3, 4 Accuracy 1
90 Day/1 Year (23°C ±5°C)
Relative to Reference JunctionType Range Resolution
J–200 to + 760°C 0.001°C ±0.5°C
K–200 to + 1372°C 0.001°C ±0.5°C
T–200 to + 400°C 0.001°C ±0.5°C
TEMPERATURE NOTES
1. For temperatures <–100°C, add ±0.1°C and >900°C add ±0.3°C.
2. Temperature can be displayed in °C, K, or °F.
3. Accuracy based on ITS-90.
4. Exclusive of thermocouple error.
GENERAL
POWER SUPPLY: 100V/120V/220V/240V.
LINE FREQUENCY: 50Hz to 60Hz and 400Hz, automatically sensed at power-up.
POWER CONSUMPTION: 40VA.
VOLT HERTZ PRODUCT: ≤8 × 107V·Hz.
SAFETY: Conforms to European Union Low Voltage Directive.
EMC: Conforms to European Union EMC Directive.
VIBRATION: MIL-PRF-28800F Class 3 Random.
OPERATING ENVIRONMENT: Specified for 0°C to 50°C. Specified to 80% R.H. at 35°C and at
an altitude of up to 2,000 meters.
STORAGE ENVIRONMENT: –40°C to 70°C.
WARMUP: 1 hour to rated accuracy.
DIMENSIONS:
Rack Mounting: 89mm high × 213mm wide × 370mm deep (3.5 in × 8.38 in × 14.56 in).
Bench Configuration (with handle and feet): 104mm high × 238mm wide × 370mm deep
(4.13 in × 9.38 in × 14.56 in).
NET WEIGHT: 4.2kg (8.8 lbs).
SHIPPING WEIGHT: 5kg (11 lbs).
Model 2015, 2015-P, 2016, 2016-P specifications
Model 2015, 2015-P, 2016, 2016-P specifications
