HT HT9020, Руководство пользователя

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HT9020
EN - 23
5.6.1. Current Harmonics measurement
1. Press the
F2
(
Har
) key to select the screen of current
harmonics as shown nearby. Press again the
F2
(
RMS
) to go
back to current measurement screen
Mod Har Fnc Zro
A C 5 0 . 0 H z
1 0 0 . 0
A
2. 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
current is displayed. It is possible to measure up to the 25
th
harmonic
◄
RMS Fnc
►
H 0 1 1 0 0 . 0 A
T h d I 1 0 . 0 %
3. Press
F3
(
Fnc
) to open the drop-down menu shown on the
screen aside. At each subsequent pressure of key
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

%
: 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
◄
RMS Fnc
H 0 1 1 0 0 . 0 A
T h d I 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: once for displaying Abs or
% values and second time to enable the Max or Min functions.
4. 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 1 0 0 . 0 A
T h d I 1 0 . 0 %
M a x
5. For the use of HOLD and backlight features see § 5.1
Max
Min
Abs
%
RST
Esc