Subject to change without notice
26
OFF - CH I/II - 1/
∆∆∆∆∆
t (41)
and
I/II -
∆∆∆∆∆
V/
∆∆∆∆∆
t (43)
switches
over from single cursor line operation to track mode and
vice versa.
In
TRK
(track) mode both cursor lines are indicated as
active (both dotted lines uninterrupted).
(43) I/II –
∆∆∆∆∆
V /
∆∆∆∆∆
t
- Pushbutton with two functions.
I/II:
Briefly pressing this pushbutton changes the active
(controllable) cursor in the sequence
I - II - I
, if TRK
(track) mode is not active. The active cursor is indicated
by a continuously dotted line. An interrupted dotted line
indicates the inactive cursor.
∆∆∆∆∆
V /
∆∆∆∆∆
t:
Pressing and holding this pushbutton changes from
voltage to time (or frequency) measurement and vice
versa. In
XY
mode the instrument is automatically set
to
∆∆∆∆∆
V
, as the time base is disabled and consequently
time or frequency measurements can not be performed.
∆∆∆∆∆
V
Cursor supported voltage measurement can be made
in different operating conditions. This causes differences.
item 1:
Time base mode.
In the voltage measurement condition, the cursors are
displayed as horizontal lines and the result is displayed
in the readout.
Single channel mode (channel I or channel II)
The
∆∆∆∆∆
V
measuring result is automatically related to the
deflection coefficient of the active channel. The readout
displays
”
∆∆∆∆∆
V1...”
or
”
∆∆∆∆∆
V2...”
.
Dual mode
The
CURSOR
lines must be set on the channel I or
channel II signal. As the deflection coefficients may be
different, it will be required to select between the
deflection coefficients of channel I and II.
Please note
item CH I/II
(41)
.
Addition (ADD) mode
In
ADD
(addition) mode normally two input signals are
displayed as one signal (sum or difference). As the result
can only be determined if both (calibrated) deflection
coefficients are equal, the
CH I/II (41)
selection function
is deactivated. In that case the readout indicates
”
∆∆∆∆∆
V...”
without any additional channel information. Different
deflection coefficient settings or uncalibrated deflection
coefficient(s) are indicated in the readout as
”Y1<>Y2”
.
item 2: XY mode
In
XY
mode the instrument is automatically set to
∆∆∆∆∆
V
measurement. The deflection coefficient selected for
each channel may be different, thus as in
DUAL
mode
the
∆∆∆∆∆
V
cursor measurement requires a channel selection
(
CHI/II (41)
). Under channel I (Y signal) measuring
condition the cursor lines are displayed as horizontal lines
and the readout displays
”
∆∆∆∆∆
VY...”
. Briefly pressing the
CHI/II (41)
pushbutton selects channel II (X signal)
measuring. Then the cursor lines are displayed as vertical
lines and the readout indicates
”
∆∆∆∆∆
VX...”
.
Please note!
In all
∆∆∆∆∆
V (voltage) measurement conditions, the
division ratio of the probe(s) must be taken into
account. The voltage value displayed in the readout
must be multiplied by 100 if e.g. a x100 (100:1)
probe is used. In case of x10 (10:1) probes, the probe
factor can be automatically included (see AC/DC
(33) and AC/DC (37)).
∆∆∆∆∆
t:
In time or frequency measurement condition two vertical
cursor lines are displayed. The measurement result is
indicated as
”
∆∆∆∆∆
t...”
(time measurement) or
”f...”
(frequency measurement).
Please note item (41) 1/
Dt.
NOTE:
For frequency measurement, the distance between
the cursors must equal exactly one signal period.
In XY mode the time base is switched off. Conse-
quently time or frequency measurement is
disabled.
(44) CURSOR
- Center biased lever.
The active cursor line (in track mode: both lines) can be
shifted in the selected direction, until the graticule limits
are reached. The directions are marked on the front panel
and depend on the selected measurement (
∆∆∆∆∆
V
,
∆∆∆∆∆
t
or
1/
∆∆∆∆∆
t
).
Which of two shift speeds is used, depends on how far
the
CURSOR
lever is pressed. With slight knob pressure
the cursor line(s) moves slowly. If the knob is pressed
to the full extent the cursor moves fast. If the knob is
released it automatically reverts to the center position
and the cursor shift stops.
(45) CAL.
- Pushbutton and concentric socket.
A square wave signal of 0.2V
pp
±1% is available from
the socket for probe adjustment purposes.
The signal frequency depends on the pushbutton setting.
If the pushbutton is released it is approx. 1kHz and can
be switched over (depressed) to approx. 1MHz. The
pulse duty factor may deviate from 1:1.
(47) CT
- Pushbutton and banana jack.
Pressing the pushbutton switches the instrument over
from oscilloscope to component test (analog) mode and
vice versa.
In component test mode, all controls are inactivated with
the exception of the
CT pushbutton
,
AUTO SET (3)
and
INTENS (4)
. All LEDs except “
A
” (associated with
the INTENS knob) are dark. The readout displays only
“
CT
” in this condition.
One test lead is connected to the CT socket. The second
test lead uses the ground socket
(37)
. Please note
“Component Tester”.
The maximum test voltage is approx. 20Vpp under open
circuit conditions, while the max. test current under short
circuit condition is approx. 20mA
pp
.
Controls and Readout
