21
Subject to change without notice
The
function replaces the actuation of the
HO79-
6 ”START”
pushbutton, which may not be accessible
(e.g. rack mount).
For further information please note the HO79-6 manual.
ANALOG and DIGITAL MODE
MENU
Pressing and holding the pushbutton activates the display
of the
MAIN MENU
. It contains the submenus
SETUP
,
CALIBRATE
and
HO79
if connected.
Once a menu is displayed, the following pushbuttons are
of importance:
1.SAVE
and
RECALL (12)
pushbutton.
Briefly pressing selects the submenu or an item within
the submenu.
2.SAVE (12)
pushbutton
SET
function.
Pressing and holding the
SAVE (12)
pushbutton calls
(sets) the menu or the previously selected item. In
those cases where the item is marked with
ON / OFF
the setting changes from
ON
to
OFF
or vice versa.
In some cases the called function is not performed at
once and a warning is displayed to protect from calling
the function inadvertently. Then the function can be
called by pressing and holding the
SAVE
pushbutton
(
SET function
) again, otherwise if the function was
called inadvertently the proceeding can be cancelled by
pressing the
AUTOSET (3)
pushbutton.
3.AUTOSET (3)
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
AUTO-
SET
is automatically set to the normal function.
(40) ON/OFF - CH I/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.
CH I/II
This function is required and available only in
DUAL
and
XY
mode in combination with
∆∆∆∆∆
V (42)
measurement, as
it is only in these modes that different deflection
coefficients
(VOLTS/DIV.)
may be selected. The probe
factor setting
(32) (36)
is automatically taken into account.
Briefly pressing the button selects between the deflection
coefficients of channel I and channel II. The measured
result is displayed by the readout with
“
∆∆∆∆∆
V1...”
or
“
∆∆∆∆∆
V2...”
.
The cursor settings relate to the signal of the selected
channel.
The position of the active CURSOR line(s), adjustable by
the
CURSOR
lever
(43)
, can be determined by activating
the
I/II- (42)
resp.
TRK (41)
function.
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 (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
mono mode, only one deflection coefficient
is present and there is no requirement to select between
different deflection coefficients. Consequently this
function is disabled in combination with
∆∆∆∆∆
V
measurements.
1/
∆∆∆∆∆
t:
Briefly pressing the button selects between time and
frequency measurement, if the
∆∆∆∆∆
V
function is not present.
In calibrated time base condition the readout displays
“
∆∆∆∆∆
t:...”
if time measurement is chosen. After briefly
pressing the pushbutton
“f:...”
(frequency) is displayed.
If the time base is uncalibrated the readout displays
“
∆∆∆∆∆
t>...”
or
“f<...”
.
Attention!
Time and frequency measurements are not possible in
XY operation, since in this mode the time base is
switched off.
(41) TRK - CURSOR -
Track function.
Briefly pressing simultaneously both buttons
ON/OFF -
CH I/II - 1/
∆∆∆∆∆
t (40)
and
I/II -
∆∆∆∆∆
V/
∆∆∆∆∆
t (42)
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).
(42) I/II -
∆∆∆∆∆
V /
∆∆∆∆∆
t
- Pushbutton with two functions.
I/II:
Briefly pressing this button changes the active (control-
lable) 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:
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 item (32) and (36)).
item 1:
Time base mode (
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.
Controls and readout
