31
Subject to change without notice
Extended functions
5.3.2 Arbitrary
The HMP4030/4040 allow to generate arbitrary waveforms with
voltage and current levels corresponding to their specifi cations.
The arbitrary function may be defi ned using the front panel or
by remote control.
Fig. 5.5: Arbitrary Editor
The menu Arbitrary offers these options: Edit waveform allows
to set the parameters of the freely programmable waveforms
( Arbitrary Editor). Set points defi ning voltage, current and dwell
time are required, all standard waveforms like staircase, saw-
tooth, sine wave etc. may be generated.
A maximum of 128 set points (index 0 ... 128) may be used and
will be repetitively addressed. The maximum number of repe-
titions is 255. If “Repetitons 000” is selected, the waveform will
be repeated indefi nitely.
The values are adjusted with the knob, entered by center click
or with the right arrow button. With Transfer Waveform the
data entered are sent to the channel selected. The waveform is
activated by Start Waveform and pressing the OUTPUT button
18
. The display will show the actual values of the waveform
in progress. With Stop Waveform the arbitrary function will
be deactivated. If the OUTPUT button is depressed it will
turn off the output, but the waveform generator will proceed
internally.
Using Save Waveform up to 3 waveforms are able to be stored
which later maybe loaded using Recall Waveform. Select the
according memory by center click of the knob
4
.
5.3.3 OVP ( Over Voltage Protection)
Fig. 5.6: OVP and activated fuse
The overvoltage protection can be adjusted for each channel, it
is factory-set to 33 V; it can be adjusted downward according to
the application. If the voltage exceeds the preset limit V
max
, the
output will be switched off and thus the load protected. If the
OVP is activated the display will show a blinking “OVP”.
5.3.4 Interface
This submenu allows to set the parameters of:
1. the Dual Interface HO720 USB/RS-232 (Baud rate, number
of stop bits, parity, handshake on/off).
2. LAN Interface HO730 (IP address, sub net mask etc., see
the manual of the HO730)
3. the IEEE-488 GPIB Interface HO740 (GPIB address).
5.3.5 Display & Key Brightness
In this submenu the intensity of the display and the button LEDs
may be adjusted by using the knob
4
.
5.3.6 Display Contrast
In this submenu the contrast of the display may be adjusted by
using the knob
4
.
5.3.7 Beeper
The option Beeper allows to switch the button sounds on/off.
Additionally, the HMP4030/4040 offers the possibility to emit
sounds only in case of error; this signal can also be turned
on/off.
Fig. 5.7: Beeper
5.3.8 Information
Here information about the instrument like type, version of the
software, date of software update etc. is available.
5.3.9 Reset Device
In this submenu the instrument can be reset to the factory
settings, i.e. all settings by the customer will be erased.
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