User manual

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