User`s guide
1 Introduction  
Your LCR Meter in Brief
16 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 37 
and 
page 42
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 37
Disables autoranging and sets a manual 
range.
• Press   again to cycle through each 
available measurement range.
Enables autoranging. page 7
Switches between impedance (Z), 
inductance (L), capacitance (C), and 
resistance (R) measurement.
Toggles between parallel and series circuit 
mode.
page 27 to 
page 35 
and 
page 37
Sets the tolerance mode.
• Connect/insert an appropriate component 
into the input terminals/sockets and press 
 to set the value shown on the 
secondary display as the standard 
reference value.
• Press   again to cycle through the 
various tolerance values (1% to 20%).
Turns the LCD backlight on for 15 seconds 
(default) or off. 
• To change the backlight time-out refer to 
“Changing the auto power-off and 
backlight time-outs” on page 73.
page 38 
and page 6
Table 1 - 5 Keypad functions (continued)
Legend
Function when pressed for:
Learn 
more on:
Less than 1 second More than 1 second
Limit
DQO
Limit
DQO
Auto
Range
Freq.
Rec
Hold
Limit
DQO
DCR
Freq.
Freq.
Freq.
Auto
Range
Auto
Range
P S
ZLCR
Tol%
Tol%
Tol%










