Meaning Of Symbols And Messages On The Instrument Display - TESTBOY TV 465 PRO Bedienungsanleitung

®
Testboy TV 465
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Meaning of symbols and messages on the instrument
display
Before performing a measurement, the instrument performs a series of pre-tests to ensure
safety and to prevent any damage. These safety pre-tests are checking for any external
voltage and load condition on test terminals. If a pre-test fails, an appropriate warning
message will be displayed. Warnings and protective measures are described in this
chapter.
WARNING!
An excessively high resistance was measured in the fuse
pre-test. This indication means that the device under test
has extremely low power consumption or it is:

not connected;

switched off;

contains a fuse that has blown.
Select PROCEED or CANCEL.
WARNING!
Voltage on mains test socket between LN - PE terminals is
higher than approximately 20 V (AC or DC)!
Disconnect the device under test from the instrument
immediately and determine why an external voltage was
detected!
WARNING!
Current on test probe (S/EB1 - PE) is higher than
approximately 10mA (AC or DC)!
Disconnect the test probe from the device under test and
determine why an external current was detected!
WARNING!
The custom autotest memory has reached the limit
1.
of 50 sequences.
WARNING!
The internal memory is full!
2.
WARNING!
3. The calibration period will expire in less than
1month. The instrument counts down the days.
WARNING!
The calibration period has expired. Recalibrate the
4.
instrument!
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Instrument description