HT HT9020, Руководство пользователя

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HT9020
EN - 22
5. Connect the cable to the middle of the clamp jaws, in order to get accurate
measurements (see Fig. 10 – left part). Use the marks as a reference (see Fig. 2)
6. The screen shows an example of AC current measurement.
The instrument allows the evaluation of possible DC
components overlapped on a generic alternate waveform
signal (AC+DC) and this can be very useful for
measurements on impulsive signals typically of no-linear
loads (e.g.: welders, electric ovens, etc.)
Mod Har Fnc Zro
A C 5 0 . 0 H z
1 0 0 . 0
A
7. 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 value of AC +
DC current

Min
: it constantly displays the minimum selected value of
AC + DC current

Cr+
: it constantly displays the maximum positive crest
value

Cr-
: it constantly displays the minimum negative crest
value

RST
: (RESET) it deletes all stored Max, Min, Cr+ and Cr-
values and re-start with a new measure

Esc
: it goes back to a normal measuring mode
Mod Fnc OK
A
C
1 0 0 . 0
A
CAUTION

Always carry out current zeroing before clamping the cable

The measurement of the 4 Max, Min, Cr+ and Cr- values is
simultaneous, regardless of the one displayed.
8. Pressing
F4
(
OK
), the selected item is confirmed. Nearby an
example of measurement with active Max function. The
display shows the active function.
Mod Har Fnc Zro
M a x A C 5 0 . 0 H z
1 2 0 . 0
A
9. For the use of HOLD and backlight features see § 5.1
Max
Min
Cr+
Cr-
RST
Esc