21
Subject to change without notice
slowly. If the knob is pressed to the full extent the cursor
moves fast. The knob automatically reverts to the center
position and the cursor shift stops, if it is released.
(41) CAL.
– Pushbutton and concentric socket.
A square wave signal of 0.2Vpp ±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 and the frequency is not calibrated.
(42) CT
– Pushbutton and banana jack.
Pressing the pushbutton switches the instrument over from
oscilloscope to component test mode and vice versa.
In component test mode, all controls are deactivated with
the exception of the
CT
button,
AUTOSET (2)
and
INTENS
(4).
All LEDs except
“A”
or
“RO”
(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
(31)
.
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. 20mApp.
Menu
The instrument software contains a menu and submenus. The
menu allows changes to the default settings regarding the
instrument behavior during operation, and a calibration option.
The menu can be called by pressing and holding the
MENU
pushbutton. Then the readout displays the headline
“MAIN
MENU”
with the submenus
”TEST & CALIBRATE”
and
”SETUP”
.
The following controls are relevant in menu operation:
1.
SAVE
(7)
and
RECALL (7)
pushbutton selection function.
Briefly pressing selects the submenu or an item within the
submenu.
2.
SAVE (7)
pushbutton
SET
function.
Pressing and holding the
SAVE
pushbutton calls the previously
selected submenu or item within the submenu. 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 return function.
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 is reset to the
normal function.
The following menus, submenus and items within the submenus
are available:
1. MAIN MENU
1.1 TEST & CALIBRATE
Information regarding this can be found in the section ”Service
Instructions” item ”Adjustments”.
1.2 SETUP
This menu allows changes to the default settings regarding the
instrument behavior during operation. The SETUP menu contains
the submenus
”MISCELLANEOUS”
and
”FACTORY”
.
1.2.1
MISCELLANEOUS
contains:
1.2.1.1 CONTROL BEEP ON/OFF
In OFF condition the acoustic signals actuated by the control
limits are switched off.
Note:
The default setting is ON. If different conditions are required
the setting must be performed each time after switching the
oscilloscope on.
1.2.1.2 ERROR BEEP ON/OFF
Acoustic signals indicating faulty control operation are suppressed
in OFF condition.
Note:
The default is ON. If different conditions are required the
setting must be performed each time after switching the
oscilloscope on.
1.2.1.3 QUICK START ON/OFF
In condition ON the HAMEG logo and the menus will not be
displayed after switching the instrument on. Then the instrument
is quickly ready for operation. To change from QUICK START OFF
to ON, press and hold the AUTOSET button when switching the
instrument on until the menus become visible and change the
setting from ON to OFF.
1.2.1.4 TRIG.- SYMBOL ON/OFF
In most of the Yt (time base) modes the readout displays a trigger
point symbol which will not be displayed in condition OFF.
1.2.1.5 DC REFERENCE ON/OFF
If ON is selected and Yt (time base) mode is present, the readout
displays a ground symbol (). This symbol eases the evaluation
and determination of DC contents by indicating the 0 Volt
reference position.
1.2.1.6 INPUT Z ON/OFF
In condition ON the TRIG. EXT. / INP. (Z) BNC socket can be used
for trace intensity modulation. For further information please note
“Readout and Controls”.
1.2.1.7 MEAN VALUE ON/OFF
The mean value display is activated in the readout if ON is
selected and the cursor line measurement is switched off. For
further information please note section “Mean Value Display”.
1.2.2
FACTORY
contains
Menu
