HT HT9020, User Manual

Page: 16 / 52

HT9020
EN - 14
5.4.1. Voltage Harmonics measurement
1. Press
F2
(
Har
) key to select the screen of voltage harmonics
as shown nearby. Press again
F2
(
RMS
) to go back to
voltage measurement screen
Mod Har Fnc OK
A C 5 0 . 0 H z
2 2 0 . 5
V
2. By pressing
F1
( ◄ ) or
F4
( ► ), it is possible to move the
cursor over the graph and select the harmonic to be
measured. The correspondent absolute or percentage value
of harmonic voltage is shown. It is possible to measure up to
the 25
th
harmonic
◄
RMS Fnc
►
H 0 1 2 1 5 . 0 V
T h d V 1 0 . 0 %
3. While measuring Voltage Harmonics, press
F3
(
Fnc
) to open
the drop-down menu shown on the screen aside. At each
subsequent pressure of
F3
, the cursor will scroll through the
available items, as follows:

Max
: it constantly displays the maximum RMS value of
the selected current harmonic

Min
: it constantly displays the minimum RMS value of the
selected current harmonic

Abs
: it displays the absolute value of the harmonics in
Volts

%
: it displays the value of the harmonics as percentage
value with respect to the fundamental

RST
(RESET) it deletes all stored Max, Min values and
re-start with a new measure

Esc
: it goes back to a normal measuring mode
◄
Par Fnc
H 0 1 2 1 5 . 0 V
T h d V 1 0 . 0 %
CAUTION
Since the menu contains functions with a different meaning (Max-Min and
Abs-%), it is necessary to enter the menu twice: first for displaying Abs or
% values and second time to enable the Max or Min functions
4. By pressing
F4
(
OK
), the selected item is confirmed. Nearby,
an example of measurement with active Max function. The
display shows the active function.
◄
RMS Fnc
►
H 0 1 2 1 5 . 0 V
T h d V 1 0 . 0 %
M a x
5. For the use of HOLD and backlight features see § 5.1
Max
Min
Abs
%
RST
Esc