Power-Measurement Application Examples
THS710A, THS720A, THS730A & THS720P User Manual
2–41
Setup to Monitor for Power Quality Problems
ME
E
— VAC —
ACQUIRE Acquire Mode Peak Detect
You can use the DMM data logger to record measurements over an
extended period of time. Set the full-scale range to 400 V using the
VOLTS/DIV rocker. Adjust the SEC/DIV rocker so that the data
logger horizontal scale is one day per division.
Meter measurements, which occur at a rate of approximately ten per
second, are captured over an eight-day period of time.
Going Further
You can position and zoom the data logger plot to see more
resolution (refer to page 3–72 for information).
Use the cursors to determine when a power disturbance occurred (to
within the nearest 24 minutes).
SCOPE CURSOR Cursor
Function
V Bars Set cursor
Move either cursor to the location of the power disturbance. Read
the relative time in the cursor readout (for example, @ 5 day, 7 hr,
12 min). Calculate the absolute time and date of the disturbance
using the current time and this measurement.
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