Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 61
Setting up Measurement Conditions and Display
Setting Up Frequency Shift
Figure 4-2  Measurement signal output timing
Setting Up Frequency Shift
When two or more E4981A units are integrated into a single system, you can 
shift the 1 MHz measurement frequency by +1%, –1%, 0%, –2%, or +2% to 
avoid interference between the measurement signals.
Setup procedure
Step 1. Press [Meas Setup].
Step 2. Use the cursor keys to select the FREQ SHFT field.
Step 3. Use the following softkeys:
Measurement Status
Measurement Signal
Trigger Signal
Trigger Signal
Measurement Signal
Measurement Status
Output
Halted
Halted
(Index)
(Index)
Source Delay Time
Trigger Delay Time
Trigger Delay Time
Halted
Analog Meas.
Output continues
Halted
Analog Meas.
Digital
Computing
Digital
Computing
Synchronous Source Function = ON
Synchronous Source Function = OFF
e4981aue0043
Softkey Description
+1% Shifts the 1 MHz measurement frequency by +1%.
–1% Shifts the 1 MHz measurement frequency by –1%.
0% Shifts the 1 MHz measurement frequency by 0%.
–2% Shifts the 1 MHz measurement frequency by –2%.
+2% Shifts the 1 MHz measurement frequency by +2%.
For Option 002, the frequency shift function is not available.