User manual

18
Vertical System
beused.Theprobesarespeciedfor1MΩinputs.With
all HMO3000, the RT-ZP05 probe is included in delivery
which offers 10:1 automatic attenuation.
You can set the coupling using the short menu or channel
menu. Simply press the respective soft menu key to set
the coupling and the graphic inversion of the input chan-
nel. The menu applies to the corresponding active channel.
The illuminated channel key indicates which channel is
active. You can switch between channels by pressing the
respective channel key.
4.2 Sensitivity, Y-Positioning, and Offset
You can select the sensitivity of the analog inputs by using
the knob in the VERTICAL section (VOLTS/DIV) in 1-2-5
steps of 1mV/div to 10V/div. The knob is associated with
the active channel (push the respective channel key to
activate the desired channel). Pushing the knob once will
switch to a continuous sensitivity setting. You can use
the smaller knob in the VERTICAL section (POSITION) to
determine vertical settings for the active channel. Press
the MENU key to access advanced options. On page 2|2 of
Passive probes have be adjusted. Please refer to to the probe
manual for the adjustment procedure.
The PROBE ADJUST output of the oscilloscope is only suitable
for 1:1 and 1:10 probes. 100:1 or 1000:1 probes require special
generators! Use the shortest possible ground connection to the
PROBE ADJUST output as shown in Fig. 4.3.
Fig. 4.3: Probe
connection to the
probe adjust output
Farbe / colour
RAL 7047
6 of 8
HMO 72x/202x- 4CH, RAL7047
Farbe / colour
RAL 5014
4 of 8
HMO 72x/202x - 4CH, RAL5014
HMO724+1024 - TXT - 29.09.2014
5800.3515.00
- 1.0
PASS/FAIL
max.
10
Vpk
PASS/FAIL
1 MΩ II 14 pF
max.
200 Vpk
1 MΩ II 14 pF
max.
200 Vpk
Farbe / colour
RAL 7021
2 of 8
1 MΩ II 14 pF
max.
200 Vpk
BUS SIGNAL
SOURCE
BUS SIGNAL
SOURCE
USE RECOMMENDED PROBE ONLY
USE RECOMMENDED PROBE ONLY
Gesamtansicht
von
71
HMO2024
2 GSa/s / 2 MB Oscilloscope
FILE
PRINT
CH4
MATH
Fig. 4.4: Vertical offset
this menu, you can add a DESKEW. To activate this offset
push the corresponding soft menu key. You can set the
offset value using the universal knob or the KEYPAD key
in the CURSOR/MENU section. Each analog channel may
be shifted in time by ±61.5ns. This deskew setting is used
to compensate different signal delays when using different
cable lengths or probes.
4.3 Bandwidth Limit and Signal Inversion
Both the short menu and the advanced menu enable you
to insert an analog 20 MHz lowpassltertothesignal
path. This will eliminate all higher frequency interference.
Toactivatethelterintheshortmenu,presstherespec-
tive soft menu key BWL. In the advanced channel MENU
the bandwidth limit will be set with the soft menu key
BANDWIDTH.Oncethelterisactivated,themenuitem
willbemarkedinblue,andtheidentierBWwillbedis-
played in the channel information window. Signal inversion
is available in the short menu and the advanced menu in
theVERTICALsection.Anactivatedlterwillbeindicated
in blue in the menu and by a bar above the channel name.
4.4 Probe Attenuation and Unit Selection
(Volt/Ampere)
The probes are recognized by the instrument,
which automatically selects the appropriate attenu-
ation factor. If any other probe without automatic attenua-
tion or just a cable is connected to the instrument, you can
manually set the attenuation factor in the advanced MENU
intheVERTICALsection.Thisispossiblewiththeprede-
ned steps x1, x10, x100, x1000 or, using the universal knob
ortheKEYPADkey,asdenedbytheuserfromx0.001to
x1000.
In this menu, you can also select the UNIT Ampere in
case you are using a current probe. If you select the unit
Ampere (A), the menu shows the most common factors
(1V/A, 100mV/A, 10mV/A, 1mV/A). You may also use the
USER setting to select any given value. You can set the
value using the universal knob or the KEYPAD key in the
CURSOR/MENU section. This setting may also be used
to measure the voltage via shunt. All measurements are
always displayed with the correct unit and scale.
4.5 Threshold Setting
The advanced menu in the VERTICAL section of the con-
trol panel allows you to set a threshold. This threshold
denestheleveltodetectaHighoraLowifanalogchan-
nels are used as source for the serial BUS analysis or logic
trigger. After selecting this soft menu item, you can set the
threshold using the universal knob.