Keysight U3401A - Figure 2-7 Typical Refresh Hold Operation Display

2 Operations and Features
54 Keysight U3401A User’s and Service Guide
4 Press to confirm.
5 Press twice quit the Setup menu.
6 Press to select refresh hold mode. The present value will be held and the
HOLD will be lit. The multimeter is now ready to hold a new measurement
value once the variation of measuring value exceeds the setting of the
variation count. The HOLD annunciator will be blinking continuously.
7 When the refresh hold is not in use, repeat step 1 to step 4 to turn off the
refresh hold’s state.
Figure 2-7 Typical refresh hold operation display
NOTE
– For voltage and current measurements, the held value will not be updated
when the reading is below 500 counts.
– For resistance and diode measurements, the held value will not be updated
when the reading is at OL or open state.