产品名称：HP339A失真仪
现货 厂 家：美国惠普
Automatic
True RMS detection
Distortion Measurement Set
Ultralow distortion measuring system complete with total harmonic distortion (THD) analyzer, true rms voltmeter, and sinew***e oscillator. THD measurements over the 10 Hz to 110 kHz frequency band, including harmonics to 330 kHz. Also features built-in tracking oscillator.
Distortion Measurements
fundamental frequency range is 10 Hz to 110 kHz with 2 digit resolution
measurement range is 100% to 0.01%, (0 dB to -80 dB)
Oscillator
Frequency range is 10 Hz to 100 kHz with 2 digit resolution. Output level is variable from 4 V rms to 1 mV rms.
Oscillator distortion ( >600 ohm load, <3 Vrms)
10 Hz to 20 kHz < -93 dB (0.0022%) THD
20 kHz to 30 kHz < -85 dB (0.0056%) THD
30 kHz to 50 kHz < -80 dB (0.01%) THD
50 kHz to 80 kHz < -70 dB (0.032%) THD
80 kHz to 110 kHz < -65 dB (0.056%) THD
Voltmeter
Range is 1 mV rms full scale to 300 V rms full scale.
Hewlett-Packard's Model 339A Distortion Measurement Set is an ultra low distortion measuring system complete with total harmonic distortion (THD) analyzer, true-rms voltmeter, and sinew***e oscillator. This ***all, lightweight bench measurement set allows you to make THD distortion measurements as low as 0.0018% over a 10 Hz to 110 kHz frequency band including harmonics to 330 kHz.
For fast and easy THD measurements the built-in tracking oscillator in HP's 339A s***es test time because you tune one instrument instead of two. Frequency and level measurements are easy to do with HP's 339A's voltmeter, which offers you a 1 mV to 300 V measurement range. The Relative Level mode has been included to further simplify frequency resp***e measurements. Just set a 0 dBm reference at any frequency from 10 Hz to 110 kHz. Gain measurements can be read directly from the easy-to-read meter.
Operation Simplicity
Automatic frequency tuning and set-level features allow you to make rapid, error free THD measurements. The 339A's built-in tracking oscillator eliminates the need to find the fundamental frequency and tune the analyzer for a null. Just select your oscillator frequency and the rest is automatic. Automatic set-level s***es time by automatically setting 0 dB (100%) reference in the distortion measuring mode. Front panel directional indicators light when the input range setting is improper insuring accurate and repeatable measurements where distortion as a function of a level (SINAD, for example) is desired. Without this feature, measurements are very time c***uming and tedious.
When an external stimulus is used, analyzer tuning is simplified by directional indicator lights for reaching the fundamental null quickly and easily.
