Subject to change without notice
20
calibrated. The settings of the cursors must relate to the signal
of the selected channel.
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. Under
channel I (X signal) measuring condition the cursor lines are
displayed as vertical lines and the readout displays
“
∆∆∆∆∆
VX...”
.
Briefly pressing the pushbutton changes to channel II (Y
signal) voltage measurement. Then the cursor lines are
displayed as horizontal lines and the readout indicates
“
∆∆∆∆∆
VY...”
.
In
CH I
or
CH II
single mode, only one deflection coefficient
is present and there is no requirement to select between
different deflection coefficients. Consequently the pushbutton
is inactivated in combination with
∆∆∆∆∆
V
measurements.
ADD
(addition) mode requires an equal deflection coefficient
setting for both channels. Cursor voltage measurement now
incorporates both channels, therefore no switching is possible.
1/
∆∆∆∆∆
t:
Briefly pressing the pushbutton selects between time and
frequency measurement (only when “
∆∆∆∆∆
t
”
or
“f
”
is displayed
by the readout). The vertical cursor lines and the
measurement result apply to the active time base (A or B,
resp. B in alternate time base mode).
In calibrated time base condition the readout displays
“
∆∆∆∆∆
t:...”
if time measurement is chosen. After switching over to 1/
∆∆∆∆∆
t
(frequency) “f:...” is displayed. If the time base is uncalibrated
the readout displays
“
∆∆∆∆∆
t>...”
or
“f<...”
.
(38) TRK
–
CURSOR-Track function.
The following description of the cursor related controls
assumes that the readout is visible.
Briefly pressing simultaneously both buttons
ON/OFF
-
CHI/
II - 1/
∆∆∆∆∆
t (37)
and
I/II -
∆∆∆∆∆
V/
∆∆∆∆∆
t (39)
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).
(39) I/II -
∆∆∆∆∆
V/
∆∆∆∆∆
t
– Pushbutton with two functions.
The following description of the cursor related controls
assumes that the readout is.
I/II:
Briefly pressing this button 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
.
∆∆∆∆∆
V:
In all
∆
V (voltage) measurement conditions, the division ratio
of the probe(s) must be taken into account. In case of x10
(10:1) probes, the probe factor can be automatically included
(see item (29) and (33)).
If a x100 (100:1) probe is used, switch to the probe symbol
(10:1) off if displayed. Then multiply the voltage value
displayed in the readout by 100.
1st: Time base modes
(CH I or CH II single channel mode, DUAL and ADD).
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 CHI/II (37)
.
Addition mode (ADD)
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
CHI/II (37)
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”
.
2nd: 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.
Under channel I (X signal) measuring condition the cursor
lines are displayed as vertical lines and the readout
displays
“
∆∆∆∆∆
VX...”
. The cursor lines are displayed as
horizontal lines and the readout indicates
“
∆∆∆∆∆
VY...”
if the
channel II deflection coefficient is chosen.
∆∆∆∆∆
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 1/
∆∆∆∆∆
t (37)
.
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.
(40) CURSOR
– Center biased lever.
The active cursor line (in track mode: both lines) can be shifted
in the required direction, until the graticule limits are reached.
The directions are marked on the front panel and depend on
the selected measurement (
∆
U,
∆
t or 1/
∆
t). Which of two
shift speeds is used, depends on how far the
CURSOR
knob
is pressed. With slight knob pressure the cursor line(s) moves
Controls and Readout
CT
ON
OFF
∆
V
∆
t
1
∆
t
1kHz
1MHz
CAL.
0.2 Vpp
C U R S O R
CH I/II
I/II
MENU
TRK
37
41
42
40
39 38 37
36
