VT-HACD-1-12/VO/1-P-O
每1 nm的功率称为功率谱密度。AQ6370D的水平轴表示每波长分辨率的功率。例如，如果分辨率设置为0.1 nm，将显示每0.1 nm的功率。由于气体激光器或激光二极管等设备的光谱比仪器的波长分辨率窄，因此整个功率可调节在分辨率范围内。因此，测得的功率（峰值）等于光源的总功率。该仪器经过校准，可在此类条件下显示准确的功率。另一方面，在许多情况下，自然光或荧光灯或LED等光源的光谱宽度超过仪器设置的波长分辨率。因此，如果仪器测量这些灯光，测量的功率将发生变化，具体取决于分辨率设置。为了解决这个问题，仪器配备了dBm dBm/nm软键，允许水平轴显示器从每分辨率的功率（dBm，mW，μW，nW，pW）切换到功率谱密度（dBm/nm，mW/nm，μW/nm，nW/nm，pW/nm）。在功率谱密度显示的情况下，将测量值转换为每1 nm的功率。因此，无论测量使用何种分辨率，一定的测量值总是可用的。有关dBm和dBm/nm使用的信息，请参阅第5.2节“水平/垂直轴设置”中的“功率谱密度显示”跟踪计算功能可用于显示0.1 nm至10 nm范围内指定带宽内的功率谱密度（见第6.8节）。注：为功率显示提供了仪器的液位精度、测量液位范围和液位线性度等规格。

The power per 1 nm is called the power spectral density. The level axis of the AQ6370D indicates the absolute power per wavelength resolution. For example, if the resolution is set to 0.1 nm, the power per 0.1 nm will be displayed. Since the optical spectrum of such devices as a gas laser or a laser diode is narrower than the wavelength resolution of the instrument, the entire power is accommodated within the band of a resolution. Therefore, the measured power (peak level) is equal to the total power of the light source. This instrument has been calibrated to display accurate power under such conditions. On the other hand, natural light or lights such as fluorescent lamps or LEDs, have, in many cases, optical spectrums wider than the wavelength resolution set for the instrument. Therefore, if the instrument measures these lights, measured power will vary, depending on the resolution setting. In order to deal with this issue, the instrument is equipped with the dBm dBm/nm soft key to allow the level axis displays to switch from the absolute power (dBm, mW, μW, nW, pW) per resolution to power spectral density (dBm/nm, mW/nm, μW/nm, nW/nm, pW/ nm). In the case of power spectral density displays, a measured value is converted to power per 1 nm. Therefore, whatever resolution is used for measurement, certain measured values will always be available. For information on the use of dBm and dBm/nm, see “Power Spectral Density Display” in section 5.2, “Horizontal/Vertical Axis Settings.” The trace computation function can be used to display the power spectral density in the specified bandwidth within the range of 0.1 nm to 10 nm (see section 6.8). Note Specifications such as level accuracy, measurement level range, and level linearity of the instrument are provided for the absolute power display.