HP 54520 Series - Page 268

Automatic Pulse
Parameter
Measurements
Specifications and Characteristics
Operating Characteristics
The oscilloscope offers 23 automatic pulse parameter measurements from
the front panel (shown below) and over HP-IB. The standard measurements
are performed with 10%, 50%, and 90% voltage thresholds, as defined by
IEEE standard 194-1977, UEEE Standard Pulse Terms and Definitions."
Automatic measurements available on the oscilloscopes
Rise Fall Frequency Period
+width ~width Duty cycle ATime
Vp-p Vmin V max Vavg
Vamptd Vbase V top
preshoot time at max voltage
overshoot time at min voltage
voltage attime _ time at voltage
Vacrms
Vdc rms
User-definable Measurement Thresholds The oscilloscope allows
you to set your own thresholds for automatic measurements. You can set
both the upper and lower thresholds from —25% to 125%, as long as the
upper threshold value is always greater than or equal to the lower
threshold. The middle threshold is always equal to the midvalue between
the upper and lower threshold.
Continuous Measurements You can turn continuous measurements
on or off. With continuous measurements off, the voltage (y) and time
(x) markers are placed on the waveform to indicate where the last
measurement was taken.
Measurement Statistics The maximum, minimum, average, standard
deviation, and most recent of continuously updated measurements are
calculated and displayed. You can select any three measurements for
simultaneous display.
Measurement Limit Test You can set the maximum and minimum
limits for any three of the front-panel automatic measurements. These
continuously updated measurements are compared to the maximum and
minimum limits. If the measurements are outside the defined limits, you
can store the waveform in a memory or print the screen on a hardcopy
device. In addition, the HP-IB Service Request line can be set to flag the
controller. You can set the measurement limit test to stop after test
limits are exceeded, or to continue testing.
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