ST2883 Series Operation Manual Chapter 5 Introduction to [SETUP]
5-3
5.2.5 Volt ADJ
For different load on each DUT, when a given impulse voltage is applied across them, the actual voltage
applied on each DUT may also be different. User can turn on the voltage adjust function to automatically
change the output voltage, thus making all voltages applied across all DUT identical.
Move the cursor to this zone, following soft keys will be available.
ON
Turn on the voltage adjust function.
OFF
Turn off the voltage adjust function.
Lighten this key to enable the numerical arrow key. Respectively press 8, 2, 4, 6, the cursor will
move up, down, left and right.
5.2.6 Wave Display
If user only wants the comparison result, the wave display can be switched off so as to obtain a test speed
much faster. Move the cursor to this zone, following soft keys will be displayed.
ALL ON
Both the standard waveform and the test waveform will be displayed on the
screen at the same time. For the consumption of display time, the test speed will
be decreased. This display will bring convenience for user to observe
waveforms.
ONLY STD WAVE In the phase of measurement, only the standard waveform will be displayed on
the screen, so the measurement will be taken at the fastest speed. This way is
suitable for users only needing the comparison result.
ONLY TEST WAVE In this mode, only the test waveform is displayed thus it will take some time to
refresh the tested waveforms after each test and the test speed will be decreased.
ALL OFF
With the exception of comparison result, none waveforms will be displayed,
therefore the test speed is the fastest in this mode.
Lighten this key to enable the numerical arrow key. Respectively press 8, 2, 4, 6,
the cursor will move up, down, left and right.
Note: In the latter two modes, when SEQ CYCLE or SINGLE CYCLE is selected, the standard
waveform will disappear; when SINGLE SAMPLE is selected, none waveforms will be displayed. Thus
it is highly recommended for user to turn on standard waveform.
5.2.7 Trig Mode
The instrument will perform a measurement only at the receipt of a trigger signal. ST2883 provides four kinds
of trigger mode: MAN (manual including foot control), EXT (external), INT (internal) and BUS. Trigger
signals only in the current trigger mode can be received and will be valid only on the MEAS DISP page. Move
the cursor to this zone, following soft keys will be displayed.
MAN This is the default trigger mode. Pressing START or using the foot switch to start a measurement.
EXT
Via HANDLER interface
，
input a negative TTL pulse (more than 1µs) from external to the
instrument, the rising edge of which will form a trigger impulse.
INT
When the trigger mode is set to this mode, ST2883 starts a measurement once START is pressed
on the MEAS DISP page, and then the instrument will continuously repeat measurements until
MEAS EXIT soft key is pressed.
BUS
TRIGGER commands are sent to ST2883 via RS232SC, USBTMC, USBCDC or LAN interface.
Lighten this key to enable the numerical arrow key. Respectively press 8, 2, 4, 6, the cursor will
move up, down, left and right.
