1Introduction
32 Keysight U1731C/U1732C/U1733C User’s Guide
Switches between the dissipation factor (D), 
quality factor (Q), or phase angle (θ) 
measurement.
Enables or disables the limit comparison mode.
– While the   annunciator is flashing, 
– press   and   again to toggle between 
high (H) or low (L) limits, then 
– use the   and   keys to select a high/
low limit set (1 to 16).
– Press   to start the limit sorting (with the 
selected limit set), or
– If no activity is detected after 3 seconds, the 
limit comparison will begin.
– Press   for more than 1 second to exit this 
mode.
page 53 
and 
page 58
Selects a test frequency.
– Press   again to cycle through the various 
test frequencies (100 Hz to 100 kHz).
U1733C only: Enables or disables the DCR 
(direct current resistance) mode.
– Press   for more than 1 second to exit this 
mode. The LCR meter will return to inductance 
measurement by default.
page 53
Disables autoranging and sets a manual range.
– Press   again to cycle through each 
available measurement range.
Enables autoranging. page 23
Switches between impedance (Z), inductance (L), 
capacitance (C), and resistance (R) measurement.
Toggles between parallel and series circuit mode.
page 43 to 
page 51 
and 
page 53
Table 1-5 Keypad functions (continued)
Legend
Function when pressed for:
Learn more 
on:
Less than 1 second More than 1 second