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Subject to change without notice

Probe factor:

Pressing and holding the pushbutton selects the indicated
deflection coefficient of channel II displayed in the readout,
between 1:1 and 10:1. In condition 10:1 the probe factor is
thus indicated by a probe symbol displayed by the readout in
front the channel information (e.g. “probe symbol”, Y2...). In
the case of cursor voltage measurement, the probe factor is
automatically included.

Please note:
The symbol must not be activated unless a x10 (10:1)
attenuator probe is used.

(34) GD - INV.

– Pushbutton with two functions.

GD:

Each time this pushbutton is pressed briefly, the input is
switched from active to inactive and vice versa. It is displayed
in the readout as an earth (ground) symbol instead of the
deflection coefficient and the

(AC) or

(DC) (input coupling)

symbol.

The GD setting disables the input signal, the

AC/DC (33)

pushbutton and the

VOLTS/DIV (21)

knob. In automatic

trigger mode the undeflected trace is visible representing
the 0 Volt trace position.

The ”0 Volt” position is indicated by a ”

⊥

” symbol in the

readout. Please note

Y-POS. II (11)

INV.:

Pressing and holding this pushbutton switches the channel
II invert function on or off. The invert on condition is indicated
by the readout with a horizontal bar above

“Y2”

(Yt mode) or

“Y”

(XY mode). The invert function causes the signal display

of channel II to be inverted by 180°.

(35) TRIG. EXT. / INP. (Z)

– BNC socket with two functions.

The impedance of this input is 1M

Ω

II 20pF. The outer (ground)

connection is galvanically connected to the instrument
ground and consequently to the safety earth contact of the
line/mains plug.

TRIG. EXT.

Signals applied at this input can be used for external
triggering. Briefly pressing the

TRIG. (20)

pushbutton, until

the information

“TR:EXT, slope, coupling”

is visible in the

readout and the TRIG. “EXT” -LED is lit, switches the input
active as an external trigger source.

Z Input:

The input can be used for Z (trace intensity) modulation, if
software setting for “INPUT Z” is ON and neither external
triggering nor component tester operation is selected.
“INPUT Z” is part of the MISCELLANEOUS menu which is a
submenu of the SETUP menu.

The trace becomes blanked by a TTL high signal (positive
logic). Voltages higher then +5V are not permissible.

Below the CRT there are the controls for the readout, the
component tester and the square wave calibrator with their
outputs.

(36) MENU

– Pushbutton.

Pressing and holding this pushbutton activates the display
of the

MAIN MENU

. It contains the submenus

TEST &

CALIBRATE

and

SETUP

. The intensity of the display depends

on the

-INTENS

(4)

setting.

Once a menu is displayed, the following pushbuttons are
of importance:

1. SAVE

and

RECALL (7)

pushbutton.

Briefly pressing selects the submenu or an item within

the submenu.

2. SAVE

–

SET (7)

pushbutton.

Pressing and holding the

SAVE (7)

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

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

AUTOSET

pushbutton

automatically set to the normal function.

(37) ON/OFF - CHI/II - 1/

∆∆∆∆∆

– This pushbutton has several

functions.

The following description of the cursor related controls
assumes that the readout is visible.

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. If the cursor
lines are switched off and MEAN VALUE

is activated

(Menu: SETUP > MISCELLANEOUS) the instrument is
prepared for DC Mean Value display. Please note section
“Mean Value Display”.

CHI/II:

This function

is required and available only in DUAL

and

mode, if cursor supported voltage measurement (

∆∆∆∆∆

V (39)

)

is chosen, as the deflection coefficients may be different.

Briefly pressing the pushbutton switches between the
deflection coefficients of channel I and channel II and vice
versa. The measured result is displayed by the readout with

“

∆∆∆∆∆

V1:...”

“

∆∆∆∆∆

V2:...”

providing the deflection coefficient is

Controls and Readout

MADE IN GERMANY

INV.

INPUT CH I (HOR. INP.(X))

AC/DC