Advanced Test Equipment Rentals ATEC (2832)

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1 Established 1981 Advanced Test Equipment Rentals ATEC (2832) 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters THD, THD+Noise, and SINAD measurements 2Hz 2kHz sine wave generator Fast frequency sweeps 215-P, 216-P: Identifies peak spectral components 215, 215-P: 4Vrms singleended or 8Vrms differential output 216, 216-P: 9.5Vrms singleended or 19Vrms differential output Individual harmonic magnitude measurements 5 standard audio shaping filters 13 DMM functions (6 1 2 digits) The Models 215-P and 216-P Audio Analyzing Digital Multimeters and the Models 215 and 216 Total Harmonic Distortion Multimeters combine audio band quality measurements and analysis with a full-function 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 216 and 216-P have twice the sine wave generator output of the Model 215 for applications that require test signals greater than 8Vrms. The Model 215-P and 216-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 215-P, 215, 216, and 216-P to provide frequency domain analysis in conventional time domain instruments. They can measure Total Harmonic Distortion (THD) over the complete 2Hz to 2kHz audio band. They also measure over a wide input range (up to 75Vrms) 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 215, 215-P, 216, and 216-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.) Figure 1. Frequency Spectrum of 1kHz Square Wave Ratio to Fundamental APPLICATIONS Wireless communication device audio quality testing Component linearity testing Lighting and ballast THD limit conformance testing Telephone and automotive speaker testing Harmonic Figure 1 shows a plot of a square wave s harmonics (frequency components) computed and transmitted to a personal computer by the Model 215 or 216. 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 3 the magnitude of the fundamental. 31

2 215 MULTIMETER 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters Figure 2. Transducer Total Harmonic Distortion Analysis and Frequency Response of a Portable Wireless Telecommunication Device Source Device Under Test Input Transducer Signal Input Model 215, 215-P, 216, or 216-P Figures 2, 3, and 4 demonstrate how the Model 215, 215-P, 216, or 216-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. Figure 3. Figure 4. Relative Level (db) Relative (db) THD and 2nd, 3rd, and 4th Harmonics as a Function of Frequency THD: Levels r elative to fundamental: 2nd harmonic 3rd harmonic 4th harmonic Frequency Response Ordering Information 215 Total Harmonic Distortion Digit Multimeter 215-P Audio Analyzing DMM 216 Total Harmonic Distortion Digit DMM w/9v Source 216-P Audio Analyzing DMM w/9v Source These products are available with an Extended Warranty. Accessories Supplied Model 1751 Safety Test Leads, User Manual, Service Manual Optimized for Production Testing The Models 215, 215-P, 216, and 216-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 3 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 Source The Models 215, 215-P, 216, and 216-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.

3 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters Figure 5a. 2 C Message Weighting Filter Figure 5d. 1 CCITT Weighting Filter 1 1 Gain (db) Figure 5b Gain (db) A Weighting Filter 1 2 Gain (db) Figure 5e Gain (db) CCIR/ARM Figure 5c Gain (db) CCIR Weighting Filter The Models 215 and 215-P have a 4Vrms single-ended output and 8Vrms differential source output. For tests that require a higher stimulus signal, the Model 216 and 216-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 215, 215- P, 216, and 216-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. 33

4 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters Wide Band or Narrow Band Noise Measurements The Models 215, 215-P, 216, and 216-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 2Hz 2kHz 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 215-P and 216-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. The Model 215-P s and 216-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. Magnitude (dbv) Fr equency Spectrum Between 1.kHz and 1.4kHz Maximum 2nd peak 3rd peak Maximum left of 4th peak 4th peak Maximum right of 4th peak 12 1.kHz 1.1kHz 1.2kHz 1.3kHz 1.4kHz Fr equency Figure 6. The Model 215-P and 216-P directly identify peak values of the frequency spectrum. CABLES/ADAPTERS 77-1 Shielded IEEE-488 Cable, 1m (3.3 ft) 77-2 Shielded IEEE-488 Cable, 2m (6.6 ft) 851-1, Trigger-Link Cables, 1m (3.3 ft), 2m (6.6 ft) 852 Trigger Link Adapter Box 853 Trigger Link Cable to 2 male BNCs,1m (3.3 ft) 79-5 RS-232 Cable RACK MOUNT KITS Single Fixed Rack Mount Kit Dual Fixed Rack Mount Kit ACCESSORIES AVAILABLE OTHER KPC-TM Trigger Master Interface KPC IEEE Interface Card for the ISA Bus KPCI-488 IEEE-488 Interface/Controller for the PCI Bus KUSB-488 IEEE USB-to-GPIB Interface Adapter TestPoint Test Development Software 15 Padded Carrying Case 215-EW 1 Year Warranty Extension 215-P-EW 1 Year Warranty Extension 216-EW 1 Year Warranty Extension 216-P-EW 1 Year Warranty Extension Rear panel of all models 34

5 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters DISTORTION CHARACTERISTICS VOLTAGE RANGE: 1mV, 1V, 1V, 1V, 75V (user selectable). INPUT IMPEDANCE: 1MΩ paralleled by <1pF. DISPLAY RANGE: 1% or 1.dB. RESOLUTION:.1% or.1db. FUNDAMENTAL FREQUENCY RANGE: 2Hz 2kHz. HARMONIC FREQUENCY RANGE: 4Hz 5kHz. FREQUENCY RESOLUTION:.8Hz. FREQUENCY ACCURACY: ±.1% of reading. FREQUENCY TEMPERATURE COEFFICIENT: 1ppm over operating temperature range. MEASUREMENT ACCURACY RESIDUAL MODE (1 Year, 23 C ±5 C) DISTORTION 1 THD and individual ±.8dB,.4% or 87dB harmonic magnitudes 2Hz to 2kHz 2 2Hz to 2kHz THD + n ±1.5 db,.56% or 65dB 1Hz to 2kHz 2 2Hz to 2kHz SINAD ±1.5dB +65dB 1Hz to 2kHz 2 2Hz to 2kHz AC Level ±(.13% of reading + V rms.9% of range) 2Hz to 2kHz 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): 2Hz 5kHz. Can be combined to form brickwall bandpass filter. DISTORTION MEASUREMENT READING RATE 3 FUNDAMENTAL MINIMUM FREQUENCY FUNDAMENTAL READINGS ACQUISITION FREQUENCY PER MODE RANGE SECOND Single acquisition 2 Hz to 1 Hz 14 or stored value 1 Hz to 1 khz 24 1 khz to 2 khz 28 Automatic 2 Hz to 3 Hz Hz to 4 Hz 6 4 Hz to 2 khz 6.6 FREQUENCY SWEEP READING RATE NUMBER OF FREQUENCIES TIME (seconds) NOTES 1. Input signal at full scale. 2. V IN 2% of range and harmonics > 65dB. 3. Speeds are for default operating conditions (*RST), and display off, auto range off, binary data transfer, trig delay =. 4. Typical times: frequencies in 4 4kHz range, binary data transfer, TRIG DELAY =, Display OFF, Auto Range OFF. Data returned is THD measurement plus AC voltage. GENERATOR CHARACTERISTICS FREQUENCY RANGE: 1 2kHz. FREQUENCY RESOLUTION:.7Hz. FREQUENCY ACCURACY: ±(.15% of reading +.7Hz) 1. FREQUENCY TEMPERATURE COEFFICIENT: <1ppm over operating temperature range. SOURCE OUTPUT: WAVEFORM: Sinewave. AMPLITUDE RANGE: 215, 215-P: 2V rms (5Ω and 6Ω) or 4V rms (HI Z). 216, 216-P: 4.75V rms (5Ω and 6Ω) or 9.5V rms (HI Z). AMPLITUDE RESOLUTION: 215, 215-P:.5mV rms (5Ω and 6Ω) or 1mV rms (HI Z). 216, 216-P: 1.25mV rms (5Ω and 6Ω) or 2.5mV rms (HI Z). AMPLITUDE ACCURACY: 215, 215-P: ±(.3% of setting + 2mV) 1, , 216-P: ±(.3% of setting + 5mV) 1, 4. AMPLITUDE TEMPERATURE COEFFICIENT: Typically.15%/ C. AMPLITUDE FLATNESS: ±.1dB 1, 4, 5. OUTPUT IMPEDANCE: 5Ω ± 1Ω or 6Ω ± 1Ω, user selectable. THD: 64dB 6. NOISE: 215, 215-P: 1µV rms2. 216, 216-P: 25µV rms 2. DC OFFSET VOLTAGE: 215, 215-P: ±1.2mV , 216-P: ±3mV 1. INV/PULSE OUTPUT (SINEWAVE MODE): FREQUENCY: Same as source output. AMPLITUDE RANGE: 215, 215-P: 2V rms (5Ω and 6Ω) or 4V rms (HI Z). 216, 216-P: 4.75V rms (5Ω and 6Ω) or 9.5V rms (HI Z). AMPLITUDE RESOLUTION: 215, 215-P:.5mV rms (5Ω and 6Ω) or 1mV rms (HI Z). 216, 216-P: 1.25mV rms (5Ω and 6Ω) or 2.5mV rms (HI Z). AMPLITUDE ACCURACY: 215, 215-P: ±(2.% of setting + 2mV) 1, , 216-P: ±(2.% of setting + 5mV) 1, 4. AMPLITUDE FLATNESS: ±.1dB 1, 4, 5. OUTPUT IMPEDANCE: Same as Source setting. THD: 64dB 6. NOISE: 215, 215-P: 1µV rms , 216-P: 25µV rms 2. DC OFFSET VOLTAGE: 215, 215-P: ±1.1mV typ., ±13mV max , 216-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:.V ±.7V to 4.9V ±.12V pulse open circuit 1, 3..V ±.5V to 3.3V ±.8V pulse 1Ω load 1, 3. OVERSHOOT: 1.V maximum pulse open circuit 3..2V maximum with 1Ω load pulse open circuit 3. UNDERSHOOT: 1.1V maximum pulse open circuit 3..45V maximum with 1Ω load pulse open circuit 3. NOTES 1. 1 year, 23 C ±5 C. 2. Measured at V OUT = V with gain 1 amplifier and 2-pole 5kHz low pass filter, Inv/Pulse in sinewave mode, HI Z output impedance, and no load. 3. With HI Z output impedance and 1m 5Ω 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 215, 215-P, 216, 216-P Specifications 35

6 215, 215-P, Digit THD Multimeters 216, 216-P Digit Audio Analyzing Multimeters Model 215, 215-P, 216, 216-P Specifications 36 DC VOLTAGE ±(ppm of rdg. + ppm of range) INPUT RANGE RESOLUTION 9 DAY 1 YEAR RESISTANCE 1. mv.1 µv > 1 GΩ 1. V 1. µv > 1 GΩ 1. V 1 µv > 1 GΩ 1. V 1 µv MΩ ±1% 1. V 1 mv MΩ ±1% RESISTANCE ±(ppm of rdg. + ppm of range) TEST RANGE RESOLUTION 9 DAY 1 YEAR CURRENT 1. Ω 1 µω ma 1. kω 1 mω ma 1. kω 1mΩ µa 1. kω 1 mω µa 1. MΩ 1 Ω µa 1. MΩ 1 Ω na 1. MΩ 1 Ω na DC CURRENT ±(ppm of rdg. + ppm of range) BURDEN RANGE RESOLUTION 9 DAY 1 YEAR VOLTAGE 1. ma 1 na <.15 V 1. ma 1 na <.3 V 1. A 1 µa <.3 V 3. A 1 µa < 1 V CONTINUITY 2W ±(ppm of rdg. + ppm of range) TEST RANGE RESOLUTION 9 DAY 1 YEAR CURRENT 1 kω 1 mω ma DIODE TEST ±(ppm of rdg. + ppm of range) TEST RANGE RESOLUTION 9 DAY 1 YEAR CURRENT 3. V 1 µv ma 1. V 1 µv µa 1. V 1 µv µa DC OPERATING CHARACTERISTICS RMS NOISE DIGITS READINGS/s PLCs 1V RANGE NMRR CMRR < 1.5 µv 6 db 14 db < 4 µv 6 db 14 db < 22 µv 8 db < 15 µv 8 db DC SYSTEM SPEEDS 2, 6 RANGE CHANGE 3 : 5 / s. FUNCTION CHANGE 3 : 45 / s. AUTORANGE TIME 3, 1 : <3 ms. ASCII READINGS TO RS-232 (19.2K BAUD): 55 / s. MAX. INTERNAL TRIGGER RATE: 2 / s. MAX. EXTERNAL TRIGGER RATE: 4 / s. TRUE RMS AC VOLTAGE AND CURRENT CHARACTERISTICS FREQUENCY ACCURACY (I Year), 23 C ±5 C RANGE RESOLUTION RANGE ±(% of reading + % of range) 1 mv to 75 V.1 µv to 1 mv 3 Hz 1 Hz Hz 2 khz khz 5 khz khz 1 khz khz 3 khz AC OPERATING CHARACTERISTICS FUNCTION DIGITS READINGS/s RATE BANDWIDTH ACV (all ranges), and s/reading SLOW 3 Hz 3 khz ACI (all ranges) MED 3 Hz 3 khz MED 3 Hz 3 khz FAST 3 Hz 3 khz FAST 3 Hz 3 khz FREQUENCY AND PERIOD CHARACTERISTICS RESOLUTION ACCURACY ACV FREQUENCY PERIOD GATE ±(ppm of 9 DAY/1 YEAR RANGE RANGE RANGE TIME reading) ±(% of reading) 1 mv 3 Hz 333 ms 1 s (SLOW) to to to.1 s (MED) V 5 khz 2 µs 1 ms (FAST) FREQUENCY NOTES 1. Specifications are for squarewave inputs >1% of ACV range, except 1mV range. On 1mV range frequency must be >1Hz if voltage is <2mV. 2. 2% overrange on all ranges except 75V range. TEMPERATURE CHARACTERISTICS THERMOCOUPLE 9 DAY/1 YEAR (23 C ± 5 C) ACCURACY Relative to USING TYPE RANGE RESOLUTION Reference Junction 21-TCSCAN 5 J 2 to + 76 C.1 C ±.5 C ±.65 C K 2 to C.1 C ±.5 C ±.7 C T 2 to + 4 C.1 C ±.5 C ±.68 C GENERAL SPECIFICATIONS POWER SUPPLY: 1V / 12V / 22V / 24V ±1%. LINE FREQUENCY: 45Hz to 66Hz, automatically sensed at power-up. POWER CONSUMPTION: 22VA. OPERATING ENVIRONMENT: Specified for C to 5 C. Specified to 8% R.H. at 35 C. STORAGE ENVIRONMENT: 4 C to 7 C. WARRANTY: 3 years. SAFETY: Conforms with European Union Directive 73/23/EEC, EN , UL EMC: Conforms with European Union Directive 89/336/EEC, EN 5511, EN 582-1, EN , EN , FCC part 15 class B. WARMUP: 1 hour to rated accuracy. DIMENSIONS: Rack Mounting: 89mm high 213mm wide 37mm deep (3 1 2 in in in). Bench Configuration (with handle and feet): 14mm high 238mm wide 37mm deep (4 1 8 in in in). NET WEIGHT: 2.9kg (6.3 lbs). SHIPPING WEIGHT: 5kg (11 lbs). VOLT HERTZ PRODUCT: V Hz. ACCESSORIES SUPPLIED: Model 1751 Safety Test Leads, User Manual.