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3
Functions and Features
Refresh Hold
The refresh hold operation allows you to capture and hold a reading, within
specified variation and threshold values. This is useful in situations when you need
to know if the running values of a setup is stable or not.
This is done by comparing the running values to the initial hold value. A preset
variation count will determine the range of values that is considered stable in
reference to the initial hold value. You can set the variation count through the
setup menu. Refer to
on page 70 on how to set the variation count.
When a stable reading is first detected, the instrument beeps once (if the beeper
is enabled), and holds the reading (the initial hold value) on the primary display.
The instrument will then compare the running values to the hold value to check if
the variation value exceeds the set variation count.
A new reading value will be updated in the primary display when the variation of
the measured value exceeds the variation count preset in the setup menu. The
instrument beeps once (if the beeper is enabled) when a reading value is updated.
For voltage, current, and capacitance measurements, the reading value will not
be updated when the reading falls below the threshold preset in the setup menu.
For continuity and diode tests, the reading value will not be updated when an
open state is detected.
Enabling the refresh hold function
1 Ensure that the data hold operation is disabled in the setup menu.
2 Press Hold/Max Min to enable the refresh hold operation. A DH will be shown
3 The clamp meter will be ready to hold new measuring value whenever the
4 Press Hold/Max Min for more than 1 second to exit the refresh hold operation.
54
Chapter 4, "Setting Data Hold/Refresh Hold mode," starting
on the annunciator display.
variation of value exceed the setting of variation count. The DH on the
annunciator display will blink. The value held earlier will be updated until the
measuring value is stable.
Keysight U1211A, U1212A, and U1213A User's and Service Guide
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