Rohde & Schwarz HMO Compact Series User manual

¸HMO Compact Series
Digital Oscilloscope
User Manual
Test & Measurement
User Manual
Version 03
*5800442802*
5800442802

3
Content
Content
1 Installation and safety
instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Symbols ..................................4
1.2 Unpacking..................................4
1.3 Setting up the instrument......................4
1.4 Safety .....................................4
1.5 Intended Operation...........................4
1.6 Ambient conditions. . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.7 Warranty and repair ..........................5
1.8 Maintenance ................................5
1.9 Measurement categories ......................5
1.10 Mains voltage ...............................6
1.11 Batteries and rechargeable batteries / cells ......6
1.12 Product Disposal.............................6
2 Introduction ...........................7
2.1 Front view .................................7
2.2 Control panel ..............................7
2.3 Screen .....................................8
2.4 General concept of instrument operation .........8
2.5 Basic settings and integrated help ...............9
2.6 Updates to Instrument Firmware, Language
and Help ..................................10
2.7 Options / Voucher ...........................10
2.8 Self Alignment .............................11
2.9 Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3 Quick Start Guide...................... 13
3.1 Setting up and turning the instrument on ........13
3.2 Connection of a probe and signal capture........13
3.3 Display of signal details ......................13
3.4 Cursor Measurements .......................14
3.5 Automatic Measurements ....................14
3.6 Mathematical functions ......................15
3.7 Storing data................................15
4 Vertical system........................ 17
4.1 Coupling ..................................17
4.2 Sensitivity, Y-Positioning, and Offset ............17
4.3 Bandwidth Limit and Signal Inversion ...........17
4.4 Probe Attenuation and Unit Selection
(Volt/Ampere) ..............................18
4.5 Threshold Setting ...........................18
4.6 Name a channel ............................18
5 Horizontal System ..................... 19
5.1 Acquisition modes RUN and STOP .............19
5.2 Time base setting ...........................19
5.3 Acquisition modes ..........................19
5.4 Interlace Mode .............................22
5.5 ZOOM function .............................22
5.6 Navigation Function .........................22
5.7 Marker Function ............................23
5.8 Search Function ............................23
6 Trigger System ........................24
6.1 Trigger modes Auto, Normal, Single ............24
6.2 Trigger sources .............................24
6.3 Trigger type ................................25
7 Signal Display.........................28
7.1 Display Settings ............................28
7.2 Usage of the Virtual Screen ...................28
7.3 Signal intensity and persistence functions .......29
7.4 XY display .................................29
8 Measurements ........................30
8.1 Cursor Measurements .......................30
8.2 Automatic Measurements ....................31
9 Analysis .............................34
9.1 Mathematical Functions ......................34
9.2 Frequency Analysis (FFT) .....................37
9.3 Quick View ................................38
9.4 PASS/FAIL Test Based on Masks ...............38
9.5 Component test ............................39
10 Documentation, Storage and Recall ....... 41
10.1 Device settings .............................41
10.2 References ................................41
10.3 Traces ....................................42
10.4 Screenshots ...............................43
10.4.1Printer ....................................43
10.5 Formula Sets...............................44
10.6 FILE/PRINTKeyDenition ....................44
11 Mixed-Signal Operation .................45
11.1 Logic Trigger for Digital Input .................45
11.2 Display Functions for the Logic Channels ........45
11.3 Display of Logic Channels as BUS ..............45
11.4 Cursor Measurements for Logic Channels .......46
11.5 Automatic Measurements for Logic Channels ....46
12 Serial Bus Analysis.....................47
12.1 Software options (license key) .................47
12.2 SerialBusConguration ......................47
12.3 Parallel / Parallel Clocked BUS .................49
12.4 I2C BUS...................................49
12.5 SPI / SSPI BUS .............................51
12.6 UART/RS-232 BUS ..........................52
12.7 CAN BUS..................................54
12.8 LIN BUS ..................................55
13 Remote control........................57
13.1 RS -232....................................57
13.2 USB ......................................57
13.3 Ethernet (Option HO730 / HO732) ..............57
13.4 IEEE 488.2 / GPIB (Option HO740): .............59
14 Specications.........................60
15 Appendix ............................63
15.1 Listofgures ..............................63
15.2 Glossary ..................................64

7
Introduction
2 Introduction
2.1 Front view
Ontheinstrumentfrontsideyoucanndthepowerkey
1
, in order to switch on the instrument or enter stand by
mode. If the instrument is in stand by mode, this key light
up red. If the instrument is switched off using the main po-
wer switch on the backside, the red light will also switch
off(thiswilltakesomeseconds).Furthermoreyoundon
the front panel the control panel
2
,
A
,
B
,
C
,
D
, the BNC
connectors of the analog inputs
45
to
48
, the probe adjust-
ment output
51
, the bus signal source
50
,the connectors for
the optional logic probe ¸HO3508
53
, a USB port for
USB sticks
54
, the TFT screen
55
, the inputs for the com-
ponent tester
52
and the LED
49
for showing activity on the
remoteinterface.Ontwochannelversionsyoucanndthe
AUX connector for external trigger at the right side.
2.2 Control panel
The controls in the front panel allow access to all ba-
sic functions while advanced settings are easily acces-
sible through the menu structure and gray soft menu keys.
The power button
1
is clearly set apart by its design. The
mostsignicantcontrolsfeaturecoloredLEDs,indicating
the current setting. The control panel is divided into four
sections.
Use the connectors for the active logic probes
53
exclusively for
the logic probes of type ¸HO3508. Connecting other types
may demolish the input.
Section
A
This section includes the CURSOR/MENU, ANALYZE and
GENERAL sections.
The CURSOR/MENU section includes cursor functions
8
,
universal knob
4
, Intens/Persist control switch
7
, the op-
tion to select the virtual screen
6
, the key for switching
betweenneandcoarseresolutionoftheuniversal knob
3
and the key for the selection of virtual screen
5
. The
ANALYZE section allows users to directly access the FFT
displays
9
, the QUICK VIEW display
10
(all important pa-
rameters of the actual signal display), the PASS/FAIL mask
test and the AUTO MEASURE settings
11
. The GENERAL
section includes the Save/Recall key
12
. With this option,
you can control the settings to load and save instrument
settings, reference signals, traces and screenshots. Addi-
tional keys enable the user to access general settings
13
such as language, DISPLAY
14
, AUTOSET
15
as well as in-
tegrated HELP
16
and FILE/PRINT
17
. Depending on how
it is programmed, FILE/PRINT enables you to directly save
instrument settings, traces or screenshots.
3
A
5
15 16
8 11 14
9 10
67
12 13
4
17
Fig. 2.2:
Control
panel of
section A.
Fig. 2.1: Frontview of the ¸HMO2024
49
1
48 47 46 45525354
2
55 A
B C D
51 50

8
Introduction
Section
B
The VERTICAL section fea-
tures all controls for analog
channels, such as the position
control knob
18
, the XY and
component test mode
19
, the
vertical gain adjustment knob
20
, the advanced menu op-
tions key
21
, the channel se-
lect keys
22
to
25
, (the two-
channel versions have only
22
23
) and the selection key for
the optional logic probes
24
(
25
). You can also access the
MATH key
26
, the reference
signal settings and bus signal
settings key
27
.
Section
C
The TRIGGER section inclu-
des all options to set the trig-
ger level
28
, to switch bet-
ween Auto and Normal mode
29
, to set the trigger type
31
,
the source
32
, the single trig-
ger
33
, to switch the trigger
slope
35
and to set the trigger
signallters
36
. Additionally,
youcanndstatusindicators,
and you can see if a signal ful-
llsthetrigger conditions
30
and which slope is used
34
.
Section
D
In the HORIZONTAL sec-
tion, users can shift the trig-
ger position horizontally or set
and navigate markers manu-
ally, either step-by-step with
the keys
37 38 39
or alterna-
tively by using the smaller one
of the knobs
41
. In the menu,
you can also set search crite-
ria for events. The illuminated
key
39
allows the selection of
the Run and Stop mode. When the stop mode is selected,
the key will light up in red.
40
activates the zoom option,
44
selects the acquisition modes,
43
adjusts the time base
speed and
42
enables access to the time base menus. To
theleftofthecontrolpanel,youalsondthesoftmenu
keys
2
to control the menu options.
2.3 Screen
The R&S®HMO Compact series is equipped with a 6.5”
(16.51 cm) TFT color monitor with LED backlight and VGA
resolution (640x480 pixels). In the default setting (no me-
nus shown), the screen includes 12 scale divisions on the
time axis. If menus are shown, this will be reduced to 10
Fig. 2.3: Control panel of
section B, C and D
28
C
29
30
33
31
34
35
36
32
37
D
38
37
41
39
42
43
44
40
18
B
19
20
22
23
24
21
25
26
27
divisions. Small arrows on the left of the display [1] indicate
the reference potentials of the channels. The line above the
graticule includes status and settings information such as
time base, trigger delay and other trigger conditions, the
current sampling rate and the acquisition mode. [2]. The
short menu to the right of the graticule contains the most
important settings of the currently active channel. You may
select these settings using the soft menu keys.[3].
Measurement results for automated measurements and
cursors, settings for the activated vertical channels, re-
ference signals and mathematically derived curves are
shown in the lower section of the screen [4]. Within the
graticule, signals of the selected channels are displayed.
By default, 8 scale divisions are shown. This can be exten-
ded virtually to 20 divisions which can be displayed using
the Scroll/Bar
5
key.
2.4 General concept of instrument operation
The general operating concept is based on a few key prin-
cipals, recurring with various settings and functions:
❙Keys that do not open a soft menu (e.g. SCROLL BAR)
activateaspecicfunction;pressingthiskeyasecond
time will deactivate this function.
❙Keys that open a soft menu when pressed once will close
the soft menu when pressed a second time.
❙Depending on the requirements, the universal knob in the
CURSOR/MENU section is designed to either select a
numeric value or to navigate through submenus.
❙The MENU OFF key below the soft menu keys closes the
current menu or switches to the next higher level.
❙Pressing the appropriate key will activate a deactivated
channel. If a channel was already activated, selecting
another channel will change operation to the channel
whose key was pressed (its LED lights up).
❙If cursor measurements are activated, the COARSE/FINE
key will select the cursor with the activated universal
knob in the CURSOR/MENU section. This key is used to
selectorconrminputinallmenusforalphanumerical
inputandforthelemanager.
Fig. 2.4: Screen view

9
Introduction
Fig. 2.7 shows, there are two basic soft menu parts. You
can select the respective element by pressing the corre-
sponding soft menu key, and the element will be marked
in blue. Alternatively, you can press the soft menu key to
toggle between function options. The menus are used as
shown in Fig. 2.8. For functions that need to be activated
and require value selections, you may toggle between OFF
and the set value (e.g. DC OFFSET function). The round ar-
row in the menu window indicates that the value is to be
set by means of the universal knob in the CURSOR/MENU
control panel. If the respective function includes an additi-
onal menu level, it will be indicated by a small triangle on
the bottom right of a menu item. If additional menu pages
are available, you can navigate these on the same level by
using the last menu item. It includes the number of menu
pages on this level as well as the current page number.
You can advance to the next page by pressing the approp-
riate soft menu key. Once the last page was listed, the dis-
playwillloopbacktotherstpage.
2.5 Basic settings and integrated help
You can access important basic settings such as language
for user interface and help, general settings and interface
settings in the menu that opens when you press the SE-
TUPkeyintheGENERALsection.Ontherstpageofthe
Fig. 2.5: Selection of basic soft
menu elements
Fig. 2.6: Basic soft menu elements
for settings and navigation
menu for the basic settings you can select the language
for user interface and help. The menu item INTERFACE ac-
tivatesthemenustoperformtheinterfaceconguration
(USB or Ethernet). The menu item PRINTER includes set-
tings for POSTSCRIPT and PCL compatible printers. When
pushing this soft menu key, a submenu opens allowing the
user to select the paper format and color mode. Using the
assigned soft menu key, the top menu item PAPER FOR-
MAT allows you to choose from A4, A5, B5, B6, Execu-
tive, Letter and Legal in either portrait or landscape for-
mat. Use the universal knob in the CURSOR/MENU section
to select the appropriate format. Following the same se-
tup procedure, the menu item COLOR MODE allows you to
choose between Grayscale, Color and Inverted. The Gray-
scale mode converts the color image to a grayscale image
which can be printed on a black-and-white postscript prin-
ter. The Color mode prints the image in color as shown on
the screen (black background). The INVERTED mode prints
the color image with a white background on a color printer
thus saving toner and ink.
The menu item DEVICE INFORMATION opens a window
with detailed information on hardware and software of the
measuring instrument. The soft menu key DEVICE NAME
allowsyoutodeneanamewithupto19characterswhich
will be listed when screenshots are printed. The soft menu
MENU allows you to select whether soft menus are to be
closed manually or automatically after 4-30s. Use the soft
menu key LOGO IN SCREENSHOT to determine whether
the R&S logo displays on the top right corner of printouts or
not. The soft menu UPDATE for the instrument and help up-
date and LICENCES to upgrade software options will be de-
scribed in detail in the following chapters. The soft menu
DATE & TIME is used to set the date and time. The soft
menu SOUND is used to set the sound options. You can ac-
tivate a sound as beeping during setup, in the event of an
error and for the triggers. The integrated help can be acti-
vated by pushing the HELP key in the GENERAL section.
This opens a window with explanatory text. The text in the
When using the INVERTED mode, you should set the intensity of
the signals to about 70% to allow a high contrast print.
Tab. 2.1: Differences HMO Compact series
Differences within the HMO Compact series 72x...202x
Unit Channels Bandwidth Vertical Settings at 1MOhm Input Impedance Offset Range
¸HMO722 270MHz 1 mV. to 10V/Div 1 MOhm -
¸HMO724 470MHz 1 mV. to 10V/Div 1 MOhm -
¸HMO1022 2100MHz 1 mV. to 10V/Div 1 MOhm -
¸HMO1024 4100MHz 1 mV. to 10V/Div 1 MOhm -
¸HMO1522 2150MHz 1 mV to 5 V/Div 1 MOhm / 50 Ohm ±0.2 to ±20 V
¸HMO1524 4150MHz 1 mV to 5 V/Div 1 MOhm / 50 Ohm ±0.2 to ±20 V
¸HMO2022 2200MHz 1 mV to 5 V/Div 1 MOhm / 50 Ohm ±0.2 to ±20 V
¸HMO2024 4200MHz 1 mV to 5 V/Div 1 MOhm / 50 Ohm ±0.2 to ±20 V
For the complete and latest technical data of each oscilloscope of the HMO series please refer to
www.rohde-schwarz.com

14
A quick introduction
3 A quick intro-
duction
The following chapter is intended to introduce you to the
most important functions and settings of your new oscillo-
scope in order to allow you to use the instrument immedia-
tely. The internal calibrator signal output is used as the sig-
nal source,soyouwillnotneedanyadditionalinstruments
fortherststeps.
3.1 Setting up and turning the instrument on
Fold out the feets completly so the display will be inclined
slightly upwards. (See chapter 1.2 for positioning) Plug the
power cord into the rear panel connector. The instrument
will be turned on by switching on the main power switch
on the back and pushing the key On/Off
1
on the front pa-
nel.Afterafewsecondsthedisplayappears,andtheos-
cilloscope is ready for measurements. Now press the key
AUTOSET
15
for at least 3 seconds.
3.2 Connection of a probe and signal capture
Takeoneoftheprobesdeliveredwiththeinstrument,de-
tach the protective cap from the top. Apply the compen-
sation box to the BNC connector of channel 1 and turn the
black knob CW until it latches positively.
On the right hand side of the screen you will see a short
menuofchannel1,thesoftkeysallowyoutoselectfre-
quently used settings. Press the top soft key once to change
the input coupling to DC.
Now press the key AUTOSET
15
onceshortly,afterafew
seconds the oscilloscope will have automatically selected
Passive probes be compensated prior to rst use. Please refer to
the probe manual for the proper compensation procedure. Place
the probe in the appropriate position on the ADJ. output such
that the tip will be accepted by the hole of the right output while
the ground connection is made to the left output, as shown in
Fig. 4.3 in chapter 4.
Active settings are marked in blue!
appropriatevertical,horizontaltime base and trigger set-
tings.Youwillseenowasquare wave signal.
3.3 Display of signal details
With the knob
43
you can change the displayed time win-
dow: turning it CCW will slow the time base. The memory
depth of 1 MB per channel allows you to capture wide time
windows with high resolution. Continue to turn the knob
CCW until you read „TB:5ms“ in the top left corner. Now
press the ZOOM key
40
.
Fig. 3.2: Screen display after connection of the probe
Fig. 3.4: Screen display after Autosetup
Fig. 3.3: Screen display after changing to DC coupling
3
A
5
15 16
8 11 14
9 10
67
12 13
4
17
Fig. 3.1:
Control
panel A of
the HMO

15
A quick introduction
Youroscilloscopeoffersthesepossibilities:
❙thedenitionofthedisplayof6parameterswhichmay
come from different sources
❙a quick view of all important parameters of one source
using the Quick View function.
Please change the time base to 100 µs per scale division
and press the QUICKVIEW
10
key.Youwillseethefollow-
ing display:
The following list features the most important parameters
of a signal:
❙positiveandnegativepeakvoltages,
❙riseandfalltimes,
❙mean voltage.
10 additional parameters are shown below the grid:
❙RMS,  peak-peakvoltage,
❙frequency, period,
❙amplitude,  numberofrisingedges,
❙pos. pulsewidth, neg. pulsewidth,
❙pos. dutycycle, neg. duty cycle.
Thus by simply pressing a key you see 14 parameters at a
glancewhichcharacterizethesignal.Thisfunctionapplies
always to the acutal active channel.
Fig. 3.8: Quick View parameter measurement
Youseenowatwo-window
display: the display will show
in the top area the complete
capturedsignal,belowanen-
larged portion. Use the time
base knob to select the zoom
factor and the small knob for
horizontalpositioning.
By pressing the ZOOM key
40
again the zoommodebewill
be deactivated.
Fig. 3.6: ZOOM function
3.4 Cursor measurements
After displaying the signal and its details we now proceed
to measuring it using the cursor functions. Press again
shortly AUTOSET
15
and then the CURSOR/MEASURE key
8
.Nowthecursormenuwillopenup,andyoucanse-
lect the kind of cursor. Press the top soft key in order to
open the appropriate menu. Use the knob in the CURSOR/
MENUareafortheselectionbyturningitCCWuntiltheV-
markerisunderlined,presstheuniversalbuttonorwaitfor
some seconds in order to accept the selection. Now two
cursorswillbedisplayedalongwiththesignal,andthe
measurement results in the bottom area of the grid. Select
the active cursor by pushing the universal knob and posi-
tion it by turning the knob.
The cursor measurement results will be displayed at the
bottom of the grid.InthiscasetheV-markerhasselec-
tedthevoltagesatthetwocursorpositions,theirdiffe-
rence,andthetimedifferencebetweenthepositionswill
be shown. The cursors will be switched off by pressing the
CURSOR/MEASURE key and the associated Cursors off
soft key.
3.5 Automatic measurements
In addition to cursor measurements the most important
signal parameters can be displayed.
Fig. 3.7: Cursor measurements
Fig. 3.5: Area of the control panel
containing the ZOOM knob
37
D
38
37
41
39
42
43
44
40

16
A quick introduction
Youmayalsodisplayuptosixparametersofdifferentsig-
nals. In order to achieve this deactivate the Quick View
functionbypressingthekeyagain,thenactivatechannel
2 by pressing the CH2 key. Open the following menu by
pressing AUTOMEASURE
11
:
Press the softmenu key beside MEAS. PLACE and choose
the number you want using the universalknob.Youmay
denetheparametermeasurementusingthismenu.Af-
ter switching on the MEASUREMENTS with the appropri-
ate softkey’s the parameter measurements are displayed
below the grid.IfyoupressthesoftkeybesideTYPEyou
can choose the parameter you want from the list using the
general knob. This procedure is used in all menus where
choicesareavailable.PleasepressthekeyTYPEand
choose rise time.
Choose MEAS. PLACE 1 and use „mean“ and source CH1.
Afterwards choose MEAS. PLACE 2 and „rms“ from CH2.
On page 2 of this menu you can switch on a complete sta-
tisticofthesemeasurements,containingtheactualvalue,
thesmallest,thelargest,themean,thestandard deviation
and the number of used measurements for that statistic.
Afterthemenuhasbeenclosed,theparameterscanbe
identiedbythecoloursoftherespectivechannels,(here
yellow for channel 1 and blue for channel 2.)
Fig. 3.9: Auto Measure menu
3.6 Mathematical functions
In addition to cursor and automaticmeasurements,your
HMO can also apply mathematical operations to the sig-
nals. Pressing the MATH
26
key and the QM resp. the
MENU key in the VERTICAL section opens a quick math
menu(QM)enablingyoutoapplyaddition,subtraction,
multiplication or division to two analog channels. This also
displays the mathematical graph. The top soft menu key
allowsyoutoselecttherstoperand.Withthekeybelow,
you can select the operator (in quick mathematics you can
choosebetweenaddition,subtraction,multiplicationordi-
vision). The soft menu key below that allows you to select
the second operand. Only activated and displayed chan-
nels are available for the operands. Press the bottom soft
menukeyFORMULARY.Thisopenstheformula editor to
selectanddene5potentialsetsofformulaswithupto5
mathematical functions each.
Tochangethesettings,usethesoftmenukeysandthe
universal knob
4
.Hereyoucandeneandstorethemost
frequently used formulas. After selecting the desired for-
mulaandpressingthesoftmenukeyEDIT,youcanedit
individual formula functions. Once a mathematical func-
tionhasbeendenedandactivatedbypressingthesoft
menukeyVISIBLE(ON),theshortmenuforthemathema-
Fig. 3.12: Formula editor
Fig. 3.10: Selection of parameters
Fig. 3.11: Measuring the parameters of two sources

17
A quick introduction
tical functions will display this function. The graph will be
marked in the short menu by a red dot. The sources selec-
ted in the function must be activated so that the mathema-
tical graph can be calculated and the result signals can be
displayed.
3.7 Storing data
YourHMOcanstore5differentkindsofdata:
❙Instrument settings
❙Reference signals
❙Signals (up to 24000 points)
❙Screen displays
❙Sets of formulae
Signals and screen displays can only be stored on USB
sticks. All other data can be stored either on a USB stick
orintheinstrument’snon-volatilememories.Inorderto
storedatayouhavetodenethekindofdataandthede-
stination. First attach a USB stick to the front panel con-
nector. Press SAVE/RECALL
12
in order to call the respec-
tive menu. Select the kind of data by pressing the respec-
tive soft key (in this example Screenshots) in order to ac-
cess the settings menu.
Please verify that the USB connector into which you
plugged the USB stick (front or rear) is written in the top
Fig. 3.13: Save/Recall menu
softmenue(Youcanchangethedestinationbyopening
the respective menu if you press the softkey next to STO-
RAGE).Youcannowsaveascreenshot if you press the
softkeynexttoSAVEusingthepredenednamewritten
in the menu below FILENAME.Youmaynamethedesti-
nation memory with up to 8 characters; in order to do this
selectthemenuitemFilenameanddenethenameby
using the universal knob (selecting a character by turn the
knob and enter by pushing the knob .
After the soft key next to ACCEPT was pressed the oscillo-
scope will have stored the name and return to the settings
menu. Here you can now store the actual screen display
bypressingtheStoresoftkey.Alternatively,youcanreturn
to a lower menu level (by pressing the lowest Menu OFF
key) and select the menu item key FILE/PRINT. In the fol-
lowing menu press the soft menu key next to Screenshots:
this will assign the function screenshot to the key FILE/
PRINT with the settings chosen. This enables you to store
abitmapleonyourUSB stick by just pressing FILE/
PRINT
17
at any time and in any menu.
Fig.3.15:Deningalename
Fig. 3.14: Menu Screenshots

18
Vertical system
4 Vertical system
For the vertical settings there
are the knobs for the vertical
position and the sensitivity,an
always visible short menu and
an extended menu.
By pushing the respective key
the channel will be selected
for which these controls will
beactivated,thiswillbeindi-
cated by the key lighting up in
the color of the channel. Ad-
ditionally,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
.
4.1 Coupling
Therstitemtobeselectedistheinputimpedance:
1MΩor50Ω.(onlyattheHMO152xandHMO202x,the
HMO72xand102xdoesnotoffer50Ωinputs).
The50Ωinputimpedanceshouldonlybeselectedifthe
signal 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200Vrms may be applied directly
totheverticalinputsif1MΩisselected.Highervoltages
Fig. 4.2: Short menu for the vertical settings
Do not connect the 50 Ω inputs to effective voltage higher than 5
volts!
Fig. 4.1: Front panel area with
vertical system controls
18
B
19
20
22
23
24
21
25
26
27
can be measured with probes (up to 40 kVp). For general
applications the probes supplied with the instrument will
beused.Theyarespeciedforthe1MΩinput.Withthe
HMO72xandHMO102xaretheHZ154delivered,which
offer a 10:1 / 1:1 switchable attenuation. Therefore the
attenuation setting must be done manually in the channel
menu. The HMO152x and HMO202x are delivered with
the HZO10 a 10:1 probe with automatic attenuation read
out,whichwillbereadfromtheprobeandfactoredin.
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 1CH 2CH 3CH 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
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 chan-
nel 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 trans-
fer 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 VERTICAL section of the front pa-
nelin1-2-5stepsfrom1mV/divtotherespectivemaxi-
malsettingindependentofthe50Ω(onlyavailableatthe
HMO152xandHMO202x)or1MΩselection.Theknobis
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 of the HMO oscilloscope is only sui-
table for 1:1 and 1:10 probes. 100:1 or 1000:1 probes require spe-
cial generators! Use the shortest possible ground connection to
the PROBE ADJUST output as shown in Fig. 4.3.
Fig. 4.4: Vertical offset in the extended menu