27
Subject to change without notice
E x t e n d e d f u n c t i o n s
The linear regulators incorporated require a certain amount
of capacitance in order to reach the levels of performance
(noise, ripple) specifi ed. Considerable technical effort (current
sink) was taken in order to reduce the capacitance in parallel
with the load. Please be sure to switch the output off before
connecting the load thus preventing excessive currents. When
switching on now the voltage resp. the current will show an
optimum response. Sensitive semiconductors such as laser
diodes should only be operated according to their manufactu-
rers’ instructions.
5 Extended functions
5.1 Storing/recalling settings ( STORE/ RECALL)
The present instrument settings can be stored in any of the
locations 0 to 9 of a nonvolatile memory by pressing the button
STORE
12
; the location is selected with the knob
4
. Use the
button RECALL
11
to recall the settings; use the knob
4
for the
selection of the location. If any of the buttons STORE or RECALL
is activated it will light up white.
5.2 Tracking function
The tracking function allows to lock several channels together
so they track each other. It is possible to adjust as well the
voltages as the current limits of the individual channels simul-
taneously. The following picture shows an example: the 1 V
decimal position of all 3 channels is selected.
Fig. 5.1: 1 V decimal position of all three channels
Press the TRACK button
9
to activate the tracking mode; then
the individual channels can be selected. If, e.g., after pres-
sing the VOLTAGE button
6
, the voltage is adjusted with the
knob
4
or the arrow buttons
3
, the voltages of the selected
channels are changed by the same amount. The same applies
to the currents if the CURRENT button
5
was pressed. The
HMP2020/2030 keeps the voltage resp. current differences
between the channels constant unless any of the channels
transgresses the minimum or maximum value of voltage or
current. As long as the tracking function is active the button will
light up white; the function will remain active until the button
was depressed again (no automatic reset after 5 sec)
5.3 Menu options (MENU)
Main-Menu HMP2030 / HMP2020
–> Fuse Linking
–> Arbitrary
–> Over Voltage Protection (OVP)
–> Interface
–> Key Brightness
–> Beeper
–> Display Contrast
–> Information
–> Reset Device
Fig. 5.2: Menu options
The menu is entered by pressing the MENU button
15
. The
following options are available:
5.3.1 FUSE Linking
Fig. 5.3: Activated Fuse linking shown in the display
The function fuse linking allows to link individual channels to-
gether. The channels can be selected or deselected by a center
Main-Menu HAMEG HMP2020 / HMP2030
–>
Fuse Linking
–>
Arbitrary
Transfer Waveform
Start Waveform
Stop Waveform
Edit Waveform
Arbitrary Editor
Save Waveform
Recall Waveform
–>
Over Voltage Protection (OVP)
–>
Interface
Select Interface
Settings
Information
–>
Key Brightness (1 – 8)
–>
Beeper
ON
OFF
Only Critical Events
–>
Display Contrast
–>
Information
–>
Reset Device
No
Yes
Fig. 5.4: Main menu (overview)
