Rohde & Schwarz HM7042-5, Руководство пользователя

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27
Subject to change without notice
ELECTRONIC FUSE
This pushbutton will activate the electronic fuse mode,
indicated by LED [ON].
OUTPUT
Pushbutton for turning all 3 channels simultaneously ON/
OFF, indicated by the LED [ON]. The voltage displays will
remain unaffected.
6.3 Current Limiting
After turn-on of the power supply it will always start in the
CURRENT LIMIT mode. Using the CURRENT con-
trols the maximum output current I
max
can be set for each
output separately. Onset of current limiting in one channel
will not influence the others. In order to adjust I
max
the
appropriate output has to be short-circuited first, then I
max
can be set, the associated LED or will light up and
indicate the current limit mode.
6.4 Electronic Fuse
Prior to selection of this mode the current limits have to be
set using the CURRENT controls. As outlined each
output has to be short-circuited first before adjusting the
appropriate CURRENT control. After setting I
max
, the short
has to be remov-ed. Then Electronic Fuse is depressed,
the LED [ON] will light up indicating that the HM7042-5 is
in the Electronic Fuse mode. In this mode all outputs will
be immediately deactivated if the I
max
of one channel is
reached. In order to leave this mode press Electronic Fuse
again.
The current limits can be set using the controls CURRENT
0 – 2 A / 0 – 5 A. If a control is set CCW to 0 A indeed the
current will be zero, so the output capacitances will be dischar-
ged slowly to 0 V. In “Current Limit“ mode the CCW position of
a control will cause the associated LED to light up, the
output voltage will decrease slowly. In the Electronic Fuse mode
the CCW position of any CURRENT control will result in immedi-
ate switching off of all channels after depressing OUPUT .
O p e r a t i n g c o n t r o l s a n d d i s p l a y s O p e r a t i n g c o n t r o l s a n d d i s p l a y s