Keysight E4981A Programming Manual page 382

Error Messages
Warning Messages (WARNING)
WARNING: Out of limit
This is displayed if the correction data is out of the valid range when measuring
the correction data. The valid range for each type of correction is as follows.
Type of correction Valid range
OPEN correction |Y| < 20 µS
SHORT correction |Z| < 20 Ω
LOAD correction |Zref| × 0.9 < |Z| < |Zref| × 1.1
In the above table, Y is the measured admittance value, Z is the measured
impedance value, and Zref is the LOAD correction standard definition value.
WARNING: Improper high/low limits
The upper limit value is less than the lower limit value. Set the lower limit value
to less than the upper limit value.
WARNING: Incompatible state file
The setting file recalled from external mass storage device has been saved
using an E4981A with a different firmware version or different options. There
may be some parameters set up incorrectly. Check the setting.
This message may appear due to option mismatch, firmware mismatch,
check-sum error or state format mismatch.
382 Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter