Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-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
1
⁄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 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 distortion in components, devices, and systems, DSPbased 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 Signalto-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 (6
1
⁄2 digits)
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 magnitude of
the fundamental). For example, the magnitude of the third harmonic is
1
⁄3the magnitude of the
fundamental.
0.35
0.3
0.25
Ratio to
Fundamental
0.2
0.15
0.1
0.05
0
23456789101112131415161718192021
Harmonic
www.keithley.com
1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
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 generating 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.
Figure 2. Total Harmonic Distortion
Analysis and Frequency
Response of a Portable Wireless
Telecommunication Device
Figure 3. THD and 2nd, 3rd, and 4th Harmonics as a Function of Frequency
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 microphone circuit output
voltage as a function of frequency.
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-Digit Audio Analyzing Multimeters
Ordering Information
2015 Total Harmonic
Distortion 6
1
⁄2-Digit
Multimeter
2015-P Audio Analyzing DMM
2016 Total Harmonic
Distortion 6
1
⁄2-Digit
DMM w/9V Source
Output
2016-P Audio Analyzing DMM
w/9V Source Output
These products are available
with an Extended Warranty.
Accessories Supplied
Model 1751 Safety Test Leads,
User Manual, Service Manual.
Device Under Test
0
–10
–20
–30
–40
Relative
Output
–50
Level
(dB)
–60
–70
–80
–90
–100
100 1000 10000
10
5
Frequency (Hz)
THD:
Levels relative to fundamental:
2nd harmonic
3rd harmonic
4th harmonic
Output
Transducer
Source
Output
Model 2015, 2015-P, 2016, or 2016-P
2015 MULTIMETER
Input
Transducer
Signal
Input
0
Relative
Output
(dB)
–5
–10
–15
–20
100 1000 10000
Frequency (Hz)
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
www.keithley.com
1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
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 telecommunication 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 characteristics.
Broad Measurement Flexibility
In addition to their THD, THD+Noise, SINAD, and individual harmonic
measurement capabilities, the instruments provide a comprehensive set of
DMM functions, including DCV, ACV, DCI, ACI, 2WΩ, 4WΩ, temperature,
frequency, period, dB, dBm, and continuity measurements, as well as
diode testing. This multi-functional design minimizes added equipment
costs when configuring test setups.
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-Digit Audio Analyzing Multimeters
Figure 5c.
Figure 5d.
Figure 5e.
Figure 5a.
Figure 5b.
Gain (dB)
Gain (dB)
20
10
0
–10
–20
–30
–40
–50
–60
10 100 1000 10000
20
10
0
–10
–20
–30
–40
–50
–60
10 100 1000 10000 100000
C–Message Weighting Filter
Frequency (Hz)
A Weighting Filter
Frequency (Hz)
Gain (dB)
Gain (dB)
10
0
–10
–20
–30
–40
–50
–60
–70
10 100 1000 10000
20
10
0
–10
–20
–30
–40
–50
–60
10 100 1000 10000 100000
CCITT Weighting Filter
Frequency (Hz)
CCIR/ARM
Frequency (Hz)
Gain (dB)
20
10
0
–10
–20
–30
–40
–50
–60
10 100 1000 10000 100000
CCIR Weighting Filter
Frequency (Hz)
www.keithley.com
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A GREATER MEASURE OF CONFIDENCE
Audio analyzing and total harmonic distortion DMMs
DIGITAL MULTIMETERS & SYSTEMS
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 instr uments’ 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
OTHER
KPCI-488LP IEEE-488 Interface/Controller for the PCI Bus
KPXI-488 IEEE-488 Interface Board for the PXI Bus
KUSB-488A IEEE-488 USB-to-GPIB Interface Adapter
1050 Padded Carrying Case
2015-EW 1 Year Warranty Extension
2015-P-EW 1 Year Warranty Extension
2016-EW 1 Year Warranty Extension
2016-P-EW 1 Year Warranty Extension
Figure 7. Rear panel of all models
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-Digit Audio Analyzing Multimeters
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
DISTORTION CHARACTERISTICS
VOLTAGE RANGE: 100mV, 1V, 10V, 100V, 750V (user selectable).
INPUT IMPEDANCE: 1MΩ 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) DISTORTION
1
THD and individual ±0.8 dB, 0.004% or –87 dB
harmonic magnitudes 20 Hz to 20 kHz
2
20 Hz to 20 kHz
THD + n ±1.5 dB, 0.056% or –65 dB
100 Hz to 20 kHz
2
20 Hz to 20 kHz
SINAD ±1.5 dB +65 dB
100 Hz to 20 kHz
2
20 Hz to 20 kHz
ACLevel ±(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 brick-
wall bandpass filter.
DISTORTION MEASUREMENT READING RATE
3
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
NUMB ER OF F R EQUENCI ES TIME (seconds)
4
5 0.2
30 1.1
100 3.5
200 6.9
NOTES
1. Input signal at full scale.
2. V
IN
>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 (50Ω and 600Ω) or 4Vrms (HI Z).
2016, 2016-P: 4.75V rms (50Ω and 600Ω) or 9.5V rms (HI Z).
AMPLITUDE RESOLUTION: 2015, 2015-P: 0.5mV rms (50Ω and 600Ω) or 1mV rms (HI Z).
2016, 2016-P: 1.25mV rms (50Ω and 600Ω) 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: ±0.1dB
1, 4, 5
.
OUTPUT IMPEDANCE: 50Ω ±1Ω or 600Ω ±10Ω, user selectable.
THD: –64dB
6
.
NOISE: 2015, 2015-P: 100µV rms
2
.
2016, 2016-P: 250µV rms
2
.
DC OFFSET VOLTAGE: 2015, 2015-P:±1.2mV
1
. 2016, 2016-P: ±3mV1.
INV/PULSE OUTPUT (SINEWAVE MODE):
FREQUENCY: Same as source output.
AMPLITUDE RANGE: 2015, 2015-P: 2V rms (50Ω and 600Ω) or 4V rms (HI Z).
2016, 2016-P: 4.75V rms (50Ω and 600Ω) or 9.5V rms (HI Z).
AMPLITUDE RESOLUTION: 2015, 2015-P:0.5mV (50Ω and 600Ω) or 1mVrms (HIZ).
2016, 2016-P: 1.25mV rms (50Ω and 600Ω) 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: ±0.1dB
1, 4, 5
.
OUTPUT IMPEDANCE: Same as Source Output setting.
THD: –64dB
6
.
NOISE: 2015, 2015-P: 100µV rms
2
.
2016, 2016-P: 250µV rms
2
.
DC OFFSET VOLTAGE: 2015, 2015-P:±1.1mV typ., ±13mVmax.
1
2016, 2016-P: ±3mV typ., ±13mVmax.
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 circuit
1, 3
.
0.0V ±0.05V to 3.3V ±0.08V pulse 100Ω load
1, 3
.
OVERSHOOT: 1.0V maximum pulse open circuit
3
.
0.2V maximum with 100Ω load pulse open circuit
3
.
UNDERSHOOT: 1.1V maximum pulse open circuit
3
.
0.45V maximum with 100Ω load pulse open circuit
3
.
NOTES
1. 1 year, 23°C ±5°C.
2. Measured at V
OUT
= 0V with gain 100 amplifier and 2-pole 50kHz low pass filter, Inv/Pulse in sinewave mode,
HI Zoutput impedance, and no load.
3. With HIZ output impedance and 1m 50Ω coaxial cable.
4. HI Zoutput impedance, no load.
5. 4V output.
6. THD measurement includes harmonics 2 through 5, 1Vrms output, HIZ, no load.
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-Digit Audio Analyzing Multimeters
www.keithley.com
1.888.KEITHLEY (U.S. only)
A GREATER MEASURE OF CONFIDENCE
Model 2015, 2015-P, 2016, 2016-P specifications
DIGITAL MULTIMETERS & SYSTEMS
DC VOLTAGE
ACCUR AC Y 23 °C ± 5°C
±(ppm of rdg. + ppm of range) INPUT
RANGE RESOLUTION 90 Day 1 Year RESISTANCE
100.0000 mV 0.1 µV 40 + 35 50 + 35 > 10 GΩ
1.000000 V 1.0 µV 25 + 7 30 + 7 > 10 GΩ
10.00000 V 10 µV 20 + 5 30 + 5 > 10 GΩ
100.0000 V 100 µV 30 + 6 45 + 6 10 MΩ ±1%
1000.000 V 1 mV 35 + 6 45 + 6 10 MΩ ±1%
RESISTANCE
ACCUR AC Y 23 °C ± 5°C
±(ppm of rdg. + ppm of range) TEST
RANGE RESOLUTION 90 Day 1 Year CURRENT
100.0000 Ω 100 µΩ 80 + 40 100 + 40 1 mA
1.000000 kΩ 1mΩ 80 + 10 100 + 10 1 mA
10.00000 kΩ 10mΩ 80 + 10 100 + 10 100 µA
100.0000 kΩ 100mΩ 80 + 10 100 + 10 10 µ A
1.000000MΩ 1 Ω 80 + 10 100 + 10 10 µA
10.00000MΩ 10 Ω 450 + 10 600 + 10 700 nA//10 MΩ
100.0000MΩ 100 Ω 2000 + 30 2200 + 30 700 nA//10 MΩ
DC CURRENT
ACCUR AC Y 23 °C ± 5°C
±(ppm of rdg. + ppm of range) BURDEN
RANGE RESOLUTION 90 Day 1 Year VOLTAGE
10.00000 mA 10 nA 300 + 80 500 + 80 < 0.15 V
100.0000 mA 100 nA 300 + 800 500 + 800 < 0.03 V
1.000000 A 1 µA 500 + 80 800 + 80 < 0.3 V
3.00000 A 10 µA 1200 + 40 1200 + 40 < 1 V
CONTINUITY 2W
ACCUR AC Y 23 °C ± 5°C
±(ppm of rdg. + ppm of range) TEST
RANGE RESOLUTION 90 Day 1 Year CURRENT
1 kΩ 100mΩ 100 + 100 120 + 100 1mA
DIODE TEST
ACCUR AC Y 23 °C ± 5°C
±(ppm of rdg. + ppm of range) TEST
RANGE RESOLUTION 90 Day 1 Year CURRENT
3.00000 V 10 µV 30 + 7 40 + 7 1 mA
10.00000 V 10 µV 30 + 7 40 + 7 100 µA
10.00000 V 10 µV 30 + 7 40 + 7 10 µ A
DC OPERATING CHARACTERISTICS
FUNCTION DIGITS READINGS/s PLCs
DCV (all ranges), 61⁄2 510
DCI (all ranges), 6
1
⁄2 30 1
2W Ohms (<10M ranges) 61⁄2 50 1
5
1
⁄2 270 0.1
51⁄2 500 0.1
5
1
⁄2 1000 0.04
4
1
⁄2 2000 0.01
DC SYSTEM SPEEDS
RANGE CHANGE: 50/s.
FUNCTION CHANGE: 45/s.
AUTORANGE TIME: <30 ms.
ASCII READINGS TO RS-232 (19.2K baud): 55/s.
MAX. INTERNAL TRIGGER RATE: 2000/s.
MAX. EXTERNAL TRIGGER RATE: 400/s.
TRUE RMS AC VOLTAGE AND CURRENT CHARACTERISTICS
ACCURACY (1 Year)
FREQUENCY 23°C ±5°C
RANGE RESOLUTION R ANGE ±(% of reading + % of range)
100 mV to 750 V 0.1 µV to 1 mV 3 Hz–10 Hz 0.35 + 0.03
10 Hz–20 kHz 0.06 + 0.03
20 kHz–50 kHz 0.12 + 0.05
50 kHz–100 kHz 0.60 + 0.08
100 kHz–300 kHz 4 + 0.5
AC OPERATING CHARACTERISTICS
FUNCTION DIGITS READINGS/s RATE BANDWIDTH
ACV (all ranges), and 61⁄2
3
2s/reading SLOW 3 Hz–300 kHz
ACI (all ranges) 6
1
⁄2
3
1.4 MED 30 Hz–300 kHz
61⁄2
4
4.8 MED 30 Hz–300 kHz
6
1
⁄2
3
2.2 FAST 300 Hz–300 kHz
6
1
⁄2
4
35 FAST 300 Hz–300 kHz
FREQUENCY AND PERIOD CHARACTERISTICS
RESOLUTION ACCURACY
ACV FREQUENCY PERIOD GATE ±(ppm of 90 DAY/1 YEAR
RANGE RANGE RANGE TIME reading) ±(% of reading)
100 mV 3 Hz 333 ms 1 s (SLOW) 0.333 0.01
to to to 0.1 s (MED) 3.33 0.01
750 V 500 kHz 2 µs 10 ms (FAST) 33.3 0.01
AC AND FREQUENCY NOTES
1. Specifications are for squarewave inputs only. Input signals 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.
3. 0.01% of step settling error. Trigger delay = 400ms.
4. Trigger delay = 0.
TEMPERATURE CHARACTERISTICS
THERMOCOUPLE ACCURACY
90 Day/1 Year (23°C ±5°C)
TYPE RANGE RESOLUTION Relative to Reference Junction
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
GENERAL SPECIFICATIONS
POWER SUPPLY: 100V/120V/220V/240V.
LINE FREQUENCY: 50Hz to 60Hz and 400Hz, automatically sensed at power-up.
POWER CONSUMPTION: 40VA.
OPERATING ENVIRONMENT: Specified for 0°C to 50°C. Specified to 80% R.H. at 35°C and at an
altitude of up to 2000m.
STORAGE ENVIRONMENT:–40°C to 70°C.
WARRANTY: 3 years.
SAFETY: Conforms with European Union Directive 73/23/EEC, EN 610110-1.
EMC: Conforms with European Union Directive 89/336/EEC, EN 61326-1.
WARMUP: 1 hour to rated accuracy.
DIMENSIONS: Rack Mounting: 89mm high × 213mm wide × 370mm deep (3
1
⁄2 in × 83⁄8 in ×
14
9
⁄16 in).
Bench Configuration (with handle and feet): 104mm high × 238mm wide × 370mm deep
(4
1
⁄8 in × 93⁄8 in × 149⁄16 in).
NET WEIGHT:4kg (8.8 lbs).
SHIPPING WEIGHT:5kg (11 lbs).
VOLT HERTZ PRODUCT: ≤8 × 10
7
V·Hz.
ACCESSORIES SUPPLIED: Model 1751 Safety Test Leads, User Manual.
2015, 2015-P,
2016, 2016-P
61⁄2-Digit THDMultimeters
61⁄2-Digit Audio Analyzing Multimeters
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