Catalog excerpts
table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:32.00pt "Arial", sans-serif; } .font1 { font:14.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:5.00pt "Georgia", serif; } .font3 { font:11.00pt "Georgia", serif; } .font4 { font:11.00pt "Microsoft Sans Serif", sans-serif; } .font5 { font:34.00pt "Sylfaen", serif; } .font6 { font:6.00pt "Times New Roman", serif; } .font7 { font:8.00pt "Times New Roman", serif; } .font8 { font:9.00pt "Times New Roman", serif; } .font9 { font:12.00pt "Times New Roman", serif; } .font10 { font:13.00pt "Times New Roman", serif; } .font11 { font:19.00pt "Times New Roman", serif; } .font12 { font:3.50pt "Trebuchet MS", sans-serif; } .font13 { font:4.00pt "Trebuchet MS", sans-serif; } .font14 { font:5.00pt "Trebuchet MS", sans-serif; } .font15 { font:6.00pt "Trebuchet MS", sans-serif; } .font16 { font:7.00pt "Trebuchet MS", sans-serif; } .font17 { font:8.00pt "Trebuchet MS", sans-serif; } .font18 { font:9.00pt "Trebuchet MS", sans-serif; } .font19 { font:11.00pt "Trebuchet MS", sans-serif; } .font20 { font:14.00pt "Trebuchet MS", sans-serif; } .font21 { font:22.00pt "Trebuchet MS", sans-serif; } 2015, 2015-P, 2016, 2016-P -Digit THD Multimeters 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%-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 distortion in components, devices, and systems, DSP-based processing allows the Models 2015-P, 2015, 2016, and 2016-P to provide frequency domain analͭysis 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.) Q o -t» T3 'rz. O E ru ru -tח» O -t» T3 rz ru THD, THD+Noise, and SINAD measurements ו 20Hz-20kHz sine wave generator Fast frequency sweeps Օ 2015-P, 2016-P: Identifies peak spectral components 2015, 2015-P: 4Vrms single-ended or 8Vrms differential output Օ 2016, 2016-P: 9.5Vrms single-ended or 19Vrms differential output Individual harmonic magnitude measurements Օ 5 standard audio shaping filters 13 DMM functions (6V2 digits) ru rz. ru < Figure 1. Frequency Spectrum of 1kHz Square Wave 0.35 i 0.3 A 0.25 Ratio to Fundamental 0.2 0.15 0.1 I I I M l S LU Iխ>- APPLICATIONS Wireless communication device audio quality testing Օ Component linearity testing Lighting and ballast THD limit conformance testing Օ Telephone and automotive speaker testing 0.05 0 10 11 12 13 14 15 16 17 18 19 20 21 Harmonie a. LU I-LLI | I-_l 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 x the magnitude of the fundamental). For example, the magnitude of the third harmonic is V3 the magnitude of the fundamental. 1.888.KEITHLEY (u.s. only) www.keithley.com < q KEITHLEY A GREATER MEASURE OF CONFIDENCE
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