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Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
User Manual
11
Precautions for Use and Daily Checks
This chapter describes precautions to take when using the E4981A and
explains how to perform regular maintenance on the device.
Precautions for Use
This section describes the precautions to take in using the E4981A.
Avoiding improper input from the front panel (key lock function)
When you do not need to operate the keys on the front panel, you can disable
entry from the front panel keys (key lock function) to avoid improper input
caused by touching the front panel keys accidentally.
The ON/OFF state of the key lock function is indicated by whether LOCK is
displayed in the status display area. When LOCK is displayed, as indicated by 1
in
Figure 11-1
ON/OFF display of the key lock function (when ON)
Figure
11-1, the function is ON.
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