Specifications

16
Subject to change without notice
4 Vertical system
For the vertical settings there are
the knobs for the vertical position
and the sensitivity, an always vi-
sible short menu and an extended
menu.
Fig. 4.1: Front panel area with
vertical system controls
By pushing the respective key the channel will be selected for
which these controls will be activated, this will be indicated by
the key lighting up in the color of the channel. Additionally, the
channel number on the screen will be framed and displayed
lighter than the channels not activated. The appropriate short
menu is always visible, the extended menu will be shown upon
pushing the key MENU
21
.
Fig. 4.2: Short menu for the vertical settings
4.1 Coupling
The rst item to be selected is the input impedance: 1MΩ or
50 Ω.
STOP
TiPP
Do not connect the 50 Ω inputs to effective voltage
higher than 5 volts!
The 50 Ω input impedance should only be selected if the si-
gnal source is 50 Ω, such as a generator with a 50 Ω output
where the termination within the scope is to be used. In all
other cases 1 MΩ is to be selected. Next DC or AC coupling
has to be selected: with DC coupling all components of the
signal will be displayed, with AC coupling the DC content will
be removed, the lower bandwidth is 2 Hz. Up to 250 V
rms
may
be applied directly to the vertical inputs if 1 MΩ is selected.
Higher voltages can be measured with probes (up to 40 KVp).
For general applications the probes HZ350 (10:1, 10 MΩ II 12 pF,
max. 400 Vp) supplied with the instrument will be used. They
are specied for the 1 MΩ input; the probe factor will be read
from the probe and factored in; they feature a 10 MΩ impedance
at low frequencies.
STOP
TiPP
The passive probes must be adjusted to the inputs
to which they are connected. See the probe manual
for the adjustment procedure. The PROBE ADJUST
output is only usable for 1:1 and 10:1 probes, for 100:1
or 1000:1 probes special external generators with a
perfect step response have to be used. Please use
the shortest possible ground connection.
The coupling is selected in the short menu: by just pushing the
appropriate key the coupling is chosen, also the signal may be
inverted. The menu is valid for the activated channel as indicated
by the channel key light up. The channel number will be shown
in the top of the menu. By pushing the respective key of another
channel the menu will transfer to this channel.
4.2 Sensitivity,Y-Positioning,andOffset
The sensitivity of the analog inputs can be selected with the large
knob in the CHANNEL CONTROL section of the front panel in
1-2-5 steps from 1 mV/div to 5 V/div independent of the 50 Ω or
1 MΩ selection. The knob is associated with the channel selected
by pushing the respective key. The sensitivity can be changed
to continuous control by pushing the knob once. The smaller
one of the knobs is used for vertical positioning.
By pushing the MENU key the extended menu is called. On page
2 of this menu a DC offset can be added to the signal. In order
to switch this offset in the respective soft key must be pushed.
The settings window will be backlit in blue, and the activity
indicator next to the general knob will light up; the offset can
now be adjusted with the knob. The offset voltage will be added
to the signal at the vertical amplier input offsetting it by that
amount from the zero position. The possible amount of offset
depends on the Volts/div setting chosen. The offset function
being activated will be indicated by two channel markers on
the left of the display, also visible if the menu was closed. One
Fig. 4.4: Vertical offset in the extended menu
18
B
19
20
22
23
24
21
25
26
27
Vertical system
A quick introduction
HMO2524
250 MHz / 2,5 GSa / 4 MB DIGITAL OSCILLOSCOPE
LEVEL
VERTICAL HORIZONTALTRIGGER
CURSOR/MENU ANALYZE GENERAL
TRIG’dSLOPE
USB STICK
LOGIC CHANNELS
REM
CH 1
CH 2 CH 3 CH 4
1MΩ II 13pF
max.
200 Vp
1MΩ II 13pF
max.
200 Vp
VOLTS/DIV
TIME/DIV
POSITION POSITION
SELECT WINDOW
COARSE/FINE
POD 2 (15..8) POD 1 (7
..0)
Use recommended probes only!
! !
50Ω
≤5V RMS
M
E
M
O
R
Y
Made in Germany
CAT I
!
ADJ.
Bus Signal
Source
S1 S2 S3
PASS/FAIL
6
2
-
K
3
0
4
-
1
1
9
0
-
1
.
0
MENU
CURSOR
SELECT
CURSOR
MODE
AUTO
MEASURE
SCROLL
BAR
CURSOR
MEASURE
FFT
QUICK
VIEW
DISPLAY
AUTO
SET
CH1
CH2
CH3
POD1
AUTO
NORM
X Y MENU
TYPE
SOURCE FILTER
SLOPE
ACQUIRE
SINGLE
RUN
STOP
SET
CLR
SETUP HELP
SAVE
RECALL
INTENS
PERSIST
REF
BUS
FILE
PRINT
CH4
POD2
MATH
Fig. 4.3: Correct connection of the probe to
the probe adjust output