25
Subject to change without notice
called inadvertently the proceeding can be cancelled
by pressing the
AUTOSET (2)
pushbutton.
3.AUTOSET (2)
pushbutton.
Each time the
AUTOSET
pushbutton is pressed the
menu is switched back one step until
MAIN MENU
is
displayed. Then pressing the
AUTOSET
pushbutton
again switches the menu operation off and the
AUTOSET
is automatically set to the normal function.
(41) ON/OFF –
CHI/II
–
1/
∆∆∆∆∆
t -
Pushbutton with several functions.
ON/OFF
Pressing and holding the pushbutton switches both
CURSOR
lines on or off. As the cursor lines are part of
the readout, they are visible only if the readout is
switched on.
CHI/II
This function is required and available only in
DUAL
and
XY
mode if
∆∆∆∆∆
V (43)
measurement is active.
Briefly pressing the pushbutton selects between the
deflection coefficients of channel I and channel II. The
actual setting is part of the result displayed as
“
∆∆∆∆∆
V1...”
for channel I or
“
∆∆∆∆∆
V2...”
for channel II. Of course the
horizontal cursor lines must be set on the relevant signal.
In
XY
mode the instrument is automatically set to
∆∆∆∆∆
V
measurement. In this mode two signals are normally
applied causing an
X
and a
Y
deflection. 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 (Y signal)
measuring condition the cursor lines are displayed as
horizontal lines and the readout displays
“
∆∆∆∆∆
VY...”
. Briefly
pressing the pushbutton changes to channel II (X signal)
voltage measurement. Then the cursor lines are
displayed as vertical lines and the readout indicates
“
∆∆∆∆∆
VX...”
.
In CHI and CHII 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
mea-
surements.
1/
∆∆∆∆∆
t
If the
∆∆∆∆∆
V
function is not present, briefly pressing this
pushbutton selects between time and frequency mea-
surement which is
not available in XY mode
.
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 briefly
pressing the pushbutton and switching over to
1/
∆∆∆∆∆
t
(frequency)
“f:...”
is displayed. If the time base is
uncalibrated the readout displays
“
∆∆∆∆∆
t>...”
or
“f<...”
.
STORAGE MODE ONLY
Extended CURSOR measurement.
The extended CURSOR measurement functions are
available under the following conditions:
1.“EXTENDED CURSOR” in the menu <Setup, Miscel-
laneous> must be in ON condition.
2.Time base mode must be present.
3.
∆
t or 1/
∆
t (f) cursor measurement must be activated.
Briefly pressing the CHI/II – 1/
∆
t - ON/OFF pushbutton
switches from “ f “ to “
∆
t ” and the following measure-
ment modes until the readout displays “ f “ again. In all
conditions vertical cursor lines are displayed even if
voltage measurements are performed.
CX:
Time measurement of the active cursor related to the
trigger point. If the active cursor position is on the left
of the trigger symbol, a negative value will be displayed.
ATTENTION!
The following description relates to voltage measure-
ment. To avoid misinterpretation, the measurement fun-
ctions are available only in mono channel operation (chan-
nel I or channel II) and invert (INV) function inactive.
The signal height and position should be set in such a
way, that the cursor line(s) is(are) crossing the signal.
CY:
Voltage measurement of the momentary signal value
related to 0 Volt, by the aid of the active cursor.
∆∆∆∆∆
Y:
Shows the relative voltage difference between the signal
momentary values, selected by CURSOR I and CURSOR
II.
V
↑↑↑↑↑
:
The maximum positive peak value related to 0 Volt will
be displayed. Only those signal portions within CURSOR
I and CURSOR II will be evaluated.
V
↓↓↓↓↓
:
The maximum negative peak value related to 0 Volt will
be displayed. Only signal portions within CURSOR I and
CURSOR II will be evaluated.
Vpp:
The maximum voltage difference between the maximum
positive and negative peak value of the signal within the
CURSOR lines will be displayed.
V=:
Shows the arithmetical mean value of the signal between
CURSOR I and CURSOR II related to 0 Volt.
Y~:
Calculates the root mean square value of an AC voltage
displayed within the CURSOR lines. If the AC voltage is
superimposed on a DC voltage, the DC content will be
suppressed even if DC input coupling is present.
y
:::::
The root mean square value of the signal between the
CURSOR lines will be calculated related to 0 Volt and
displayed unsigned. AC, DC and AC voltages superim-
posed on DC voltages are taken into consideration.
Note: DC signals require DC input coupling.
(42) TRK -
Track function.
Briefly pressing simultaneously both pushbuttons
ON/
Controls and Readout
