10
Subject to change without notice
that the
“RM”
LED is lit, all electronically selectable
controls on front panel are inactive. This state can be left
by depressing the
AUTOSET
pushbutton provided it was
not deactivated via the interface.
STORAGE MODE ONLY
The RM-LED is lit during data transfer via the built in
RS232 interface. At this time the controls are inactive.
(4)
INTENS - READOUT
- Control knob with associated
pushbutton and LEDs.
This control knob is for adjusting the trace (A) and readout
intensity
(RO)
. Turning this knob clockwise increases and
turning it counterclockwise decreases the intensity.
The
READOUT
pushbutton below is for selecting the
function in two ways. If the readout
(RO)
is not switched
off, briefly pressing the
READOUT
pushbutton switches
over the
INTENS
knob function indicated by a LED in the
sequence:
Yt (time base) mode: A - RO - A
XY mode: A - RO - A.
Component Test: A - RO - A.
Pressing and holding the
READOUT
pushbutton switches
the readout on or off. In readout off condition the
INTENS
knob function can consequently not be set to
RO
.
Switching the readout off, may be required if interference
is visible on the signal(s). Such interference may also
originate from the chopper generator if the instrument is
operated in chopped
DUAL
mode.
With the exception of the letters
“CT”
all other
READOUT
information is switched off in
COMPONENT TEST
mode.
All
INTENS
settings are stored after the instrument is
switched off.
The
AUTOSET
function switches the readout on. The
INTENS
setting for each function is automatically set to
the mean value, if less intensity was previously selected.
(5)
TR
- Trimming potentiometer.
The trace rotation control can be adjusted with a small
screwdriver (please note “trace rotation TR”)
(6)
FOCUS
- Control knob.
This control knob effects both the trace and the readout
sharpness.
(7)
STOR. ON / HOLD
- Pushbutton with two functions.
STOR. ON
Pressing and holding the button switches from analog (Yt
or XY) to storage mode and vice versa. If CT (Component
Tester) mode is present (only available in analog mode),
it must be switched off first to enable switching over to
storage mode.
The oscilloscope is in analog mode if none of the LED’s
associated with the
STOR.MODE (9)
pushbuttons are lit
and a pre- or post-trigger value (PT...%) is not indicated by
the readout. Pressing and holding the STOR. ON button
switches over to the digital mode, but without changing
the channel operating mode (
CH I, CH II, DUAL, ADD
and
XY
). The actual signal capture mode is indicated by one
of the
STOR. MODE-LED‘s
(
RFR - ENV - AVM - ROL
) and
in addition displayed by the readout. In digital XY mode
the RFR-LED is lit and the readout indicates XY. If digital
SINGLE
event
(SGL)
capture mode is selected, all
STOR.
MODE
-LED‘s are dark, but the readout displays the pre-
or post-trigger value (PT...%).
Attention!
The time base ranges are dependent on the operating
mode Analog or Digital (storage). The following data relate
to operation without X magnification (X-MAG. x10).
Analog mode:
Time base from 500ms/cm to 50ns/cm
(without trace delay).
With trace delay, from 20ms/cm to 50ns/cm.
Delay ranges from 20ms/cm to 100ns/cm.
Digital mode:
Time bases from 100s/cm to 1µs/cm.
This results in the following behavior when switched
from analog to digital mode and vice versa:
1.If in analog mode, the time base has been selected
between 500ns/cm and 50ns/cm, then on switching
to digital mode the lowest available time coefficient will
be automatically selected, i.e. 1µs/cm. If now one
switches back to analog mode without having made
any time base changes in the digital mode, then the last
time base selected in the analog mode is again active
(e.g. 500ns/cm).
If on the other hand, the time base is changed after
switching over to digital mode (e.g. to 2µs/cm). Then,
when switched back to analog mode, the time base in
analog mode will be set to the value selected in the
digital mode (e.g. 2µs/cm).
2. If a time base between 100s/cm and 1s/cm has been
set in the digital mode and the mode is switched to
analog, then the time base in analog mode is automatically
set to 500ms/cm. The rest is as described before.
The X-MAG x10 setting remains unchanged when
switched from analog to digital mode and vice versa.
STORAGE MODE ONLY
If by pressing and holding the
STOR. ON / HOLD
button,
the mode is switched to digital, then one of the associated
LED’s lights up. Which one it is, depends on the last
selected digital operation.
Exception
Switching over from analog SINGLE mode to digital
mode sets the instrument automatically to digital
SINGLE mode.
Attention
The possibilities of delayed trace and the related
operations with delayed time base are not available in
digital mode.
Controls and readout
