Agilent Technologies HP 54601B Podręcznik Użytkownika Pobierz pdf (Strona 78)

Optimizing the mask testing accuracy

The testing accuracy can be divided into two parts: vertical accuracy and

horizontal accuracy.

Vertical accuracy

The HP 54600-series oscilloscopes have fully calibrated vertical verniers. To

achieve the highest accuracy, the vertical sensitive should be placed in the

vernier mode and adjusted so that the input signal occupies the entire screen

(full scale).

For testing a DC signal, use the fully calibrated position control to get rid of

the dc component. With a x10 probe, a maximum of 20 volts of calibrated

offset can be used even at the most sensitive setting.

Horizontal accuracy

The HP 54600-series of oscilloscopes have fully calibrated time base verniers.

For testing time related parameters such as frequency and rise time, it is

recommended that the portion of the signal that contains the parameter

occupies approximately the whole screen width. Figure 23 shows how to set

up the oscilloscope to test rise time.

Solutions

Optimizing the mask testing accuracy

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Agilent Technologies HP 54601B Podręcznik Użytkownika Strona 78