Output Power; Overtemperatur Protection; Switching The Outputs On/Off; Introduction To The Operation - Rohde & Schwarz Hameg Instruments HM8040-3 Manual

Output power

As the HM8040-3 is fed from the mainframe
supplies in the HM8001-2 its maximum output
power is limited to 25 W. Suffi cient ventilation is
necessary.
The operation of two HM8040-3 in
the HM8001-2 is only permitted if the
sum of all output currents (these are 6)
remains ≤2 A.
Overtemperature protection
If the internal temperature exceeds 75 .. 80 de-
grees C all outputs and displays will be deactiva-
ted. This will be indicated by 3 blinking dashes in
the left and right displays.
As soon as the displays will light up again and dis-
play the values set the instrument will be ready for
operation. In order to turn the outputs back on the
pushbutton OUTPUT

Switching the outputs on/off

It is a feature of all HAMEG power supplies that
the outputs can be turned on and off by pushing
a button. The power supply remains turned on so
that all voltages and currents may be set prior to
turning the outputs on.
has to be depressed.
I n t r o d u c t i o n t o t h e o p e r a t i o n

Introduction to the operation

First time operation
Before turning the instrument on please observe
the following:
– The mains voltage selector at mainframe
HM 8001-2 is set to the correct voltage.
– The correct fuses for the voltage selected are
installed in the fuseholder
– Connection to a mains outlet with protective
earth or to a class 2 isolation transformer
– No visible damage to the instrument
– No damage to the line cord
– No loose parts inside the instrument
Turning the instrument on
After turning the instrument on the outputs will
always remain disconnected in order to protect
the loads. First the desired voltages should be
set, then the desired maximum currents, then
the outputs may be activated by pressing OUT-
PUT . After turn-on the instrument will select
the current limit mode (electronic fuse deactiva-
ted). If the fuse mode is selected after turn-on
this mode will be lost after turn-off.
Subject to change without notice
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