Key Lock; Checking The Test Conditions - Kikusui TOS6200A User Manual

4.8

Key Lock

The key lock function protects accidental changing of the test conditions.
Press the SHIFT + LOCAL/KEY LOCK key combination (pressing the LOCAL
key with the SHIFT key held down) to lock the panel settings.
In this case, only the START and STOP switches are available on the front panel.
When key lock is in effect, "KEY LOCK" is indicated on the LCD. To cancel key
lock, press the SHIFT + LOCAL/KEY LOCK keys again.
4.9

Checking the Test Conditions

This tester checks if the values set as the test conditions are valid or not. If an invalid
value is set, the tester displays the cause of it on the LCD, informing you that testing
cannot be conducted unless it is changed.
The following four causes are displayed:
4-32 Basic Operation
MAIN MAIN
50Hz
FREQ LOWER OFF OFFSET
25.0 0.100
UPPER
A
LCD Indication in
the Event of Invalid Setting
OVER VOLT
OVER VA
OVER RESI
UP <= LOW
READY
OFF TIMER ON
60.0
s
KEY LOCK
Setting of output out of the operation range
Upper reference value  lower reference value
Cause of Invalid Value
TOS6200A/6210