Keysight U8903B, Руководство пользователя

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7 Test Sequence Application
390 Keysight U8903B User’s Guide
Measurement recorder
Measurement recorder is a tool that provides a record of a number of measurements versus
elapsed time. It is useful to monitor the output of a DUT over an extended period of time.
The measurement recorder does not require a specific test signal. It can be used with any
audio signal within the input range of the analyzer or with no signal.
The reading rate of the measurement recorder is dependent on the channel count, sample
size, and result type. A reading is obtained at the beginning of the measurement and
throughout the duration set until the elapsed time.
The results are displayed on an X-Y graph, with the time parameter on the X-axis and the
measured results on the Y-axis (AC Level, Gain, Phase, THD+N Ratio, THD+N Level, DC
Level, Frequency, and SINAD). Refer to “
Measurement Results ” on page 399 for more
information on the respective result menu page. Use the arrow keys to navigate through
the respective tabs and to display the menu page.
NOTE
– Auto ranging is not supported for the phase result.
– DC level result is not available if AC coupling is selected in the output configuration
settings.