Keysight E4980AL - Page 117

Keysight E4980A/AL Precision LCR Meter 117
Configuring Measurement Conditions (Display and Function Related Settings)
CORRECTION page
4-
The E4980A/AL do not have a functionality to check whether the OPEN
correction data is valid or not. Any OPEN correction data can be set, even
if work-related mistakes are made in measuring for the OPEN correction.
For example,
- improper OPEN is used.
- setting up the OPEN state and SHORT state inversely.
- the OPEN is connected incompletely.
- fixture or cable is connected incompletely.
- previous correction data is used.
- after correction, different length cable/different fixture is connected or
settings of frequency/level is changed.
If OPEN correction data is invalid, it may cause inappropriate
measurements without showing warning message. Be careful about the
connection of appropriate OPEN state. You cannot check the measured
values for the OPEN correction.
If "E43 Measurement failed" error is displayed during the OPEN correction,
measure the OPEN state (disable OPEN correction[OPEN OFF]) at some
frequencies (100, 1k, 1MHz etc.) and check if the following conditions
happen. If one of them happens, try its suggestion.
"ALC unable to regulate" warning message is displayed (suggestion: turn
off ALC)
"Signal source overload" warning message is displayed (suggestion:
reduce test signal)
"Overload" is displayed (Measurement result becomes overload)
(suggestion: check cabling/fixturing)