Crest Factor
The crest factor or peak factor indicates the ratio between peak value and true RMS of a
signal. This unit finds particular attention with true RMS measurement instruments (UNI-
TEST Clamp CHB 5). Although the measurement value is located within the selected mea-
surement range, the UNITEST Clamp CHB 5 could be amplified and supply faulty measu-
rement results, if the signal to be measured shows excessive peak values.
5.9b MIN/MAX/Peak Measurement
The MIN/MAX button can be used to find either the largest or the smallest value of a se-
ries of measurements. Pressing the MIN/MAX button activates first the MIN mode, so that
the smallest value is selected. Pressing it a second time changes to MAX mode, for the
largest value. Pressing the button a third time returns the instrument to normal operati-
on.
.
6.0
Maintenance
Provided it is used in accordance with the users manual, the instrument needs no speci-
al maintenance.
6.1
Cleaning
If the instrument is dirty after daily usage, it is advised to clean it by using a humid cloth
and a mild household detergent. Prior to cleaning, ensure that instrument is switched off
and disconnected from external voltage supply and any other instruments connected
(such as UUT, control instruments, etc.).Never use acid detergents or dissolvants for
cleaning
6.2
Changing the battery
Prior to storage battery replacement, disconnect the instrument from any
circuits.
Only use batteries as described in the technical data section.
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