Introduction 1
Keysight U1731C/U1732C/U1733C User’s Guide 31
Keypad
The operation of each key is explained below. Pressing a key enables a function, 
displays a related annunciator, and emits a beep.
Each key operation of the U1731C/U1732C/U1733C keypad (shown in Figure 1-7) 
is described in Table 1-5. Click the respective “Learn more” pages in Table 1-5 for 
more information on each function.
Table 1-5 Keypad functions
Legend
Function when pressed for:
Learn more 
on:
Less than 1 second More than 1 second
Turns the LCR meter on or off. - page 21
Starts or stops the auto identification mode.
– Press   again while the   annunciator is 
shown to exit this mode.
Enables or disables the ESR (equivalent series 
resistance) mode.
– Press   for more than 1 second to exit this 
mode. The LCR meter will return to 
capacitance measurement by default.
page 42
Holds or releases the present reading on the 
display.
– Press   again to update the reading 
automatically once it is stable.
– Press   for more than 1 second to exit this 
mode.
Starts or stops the static recording mode.
– Press   again to cycle through the 
maximum (Max), minimum (Min), average 
(Avg), and present (MaxMinAvg) readings.
– Press   for more than 1 second to exit this 
mode.
page 56