Technical data

62 U1401A User’s and Service Guide
3 Making Measurements
Refresh hold (auto trigger)
The refresh hold mode freezes the displayed value until the
reading variation exceeds the specified number of counts.
This function will autotrigger and update the held value with
a new measured value. When a new value is updated, the
instrument will beep once as a notification. The keypad
operation is similar to the operation of data hold mode.
1 Make sure the refresh hold mode is enabled in the setup
mode.
2 Press to enter the refresh hold mode.
• The present value will be held and the DH annunciator
will appear on the display.
• It will be ready to hold the new measured value once
the variation of the instantaneous reading exceeds the
preset variation count (defined in setup mode); while it
waits for a stable new reading, the DH annunciator will
flash.
• The DH annunciator will stop flashing once a stable
new reading is available, and then the new value will
be updated to the display. The instrument will beep
once as a notification.
3 Press to exit this mode.
For voltage and current measurements, the held value will
not be updated if the variation of the reading is below 500
counts. For resistance and diode measurements, the held
value will not be updated if the reading is OL or open. For
all measurements, the held value will not be updated if the
reading cannot reach a stable state.