本帖最后由 笨鸟先肥 于 2018-2-22 21:19 编辑
大师们发功发到一半就战术转移了
http://bbs.erji.net/forum.php?mod=viewthread&tid=2098598
然后呢, 又开始质疑俺买了三个表的事实。
买了三个表啊。
然后呢, 选择性失明。 小数点都不会数了。
大师不会查字典, 看不懂英文, 这是夜大还是蓝翔的大学部啊??
小数点也不会数, 这是解放前的大学?对数也不会看? 这是明朝的大学???
Our audio analyzing multimeters combine audio band quality measurements and analysis with a broad purpose 6½-digit DMM—all in one half-rack instrument. They can measure total harmonic distortion (THD) over the complete 20Hz to 20kHz audio band and can compute THD+Noise and signal-to-noise plus distortion (SINAD).
Specifications
Distortion Characteristics
Voltage Range 100 mV, 1 V, 10 V, 100 V, 750 V (user selectable).
Input Impedance 1MΩ paralleled by <100pF.
Display Range 0–100% or 0–100.00 dB.
Resolution 0.0001% or 0.00001 dB.
Fundamental Frequency Range 20 Hz–20 kHz.
Harmonic Frequency Range 40 Hz–50 kHz.
Frequency Resolution 0.008 Hz.
Frequency Accuracy ±0.01% of reading.
Frequency Temperature Coefficient ≤100 ppm over operating temperature range.
|