Rohde Schwarz Rohde & Schwarz HMO1002 2-channel oscilloscope, Digital Storage oscilloscope, 21-1002-RS00 データシート
製品コード
21-1002-RS00
19
Horizontal System
also possible to zoom out at the maximum repeat rate if
the STOP mode was run at fast time bases. If a high repeat
rate can only be attained by means of low memory depth
(as is the case with other manufacturers) it is nearly impos-
sible to zoom in retrospectively in STOP mode.
the STOP mode was run at fast time bases. If a high repeat
rate can only be attained by means of low memory depth
(as is the case with other manufacturers) it is nearly impos-
sible to zoom in retrospectively in STOP mode.
5 .4 Interlace Mode
In interlace mode, ADC and storage of two channels are
connected. This doubles the sampling rate and the acquisi-
tion memory. A channel is considered active even if it has
been deactivated while still serving as the trigger source. If
a channel is activated, the respective LED next to the input
connector is illuminated. The following conditions must be
met to activate the Interlace mode:
connected. This doubles the sampling rate and the acquisi-
tion memory. A channel is considered active even if it has
been deactivated while still serving as the trigger source. If
a channel is activated, the respective LED next to the input
connector is illuminated. The following conditions must be
met to activate the Interlace mode:
❙No active logic pod
❙None of the serial or parallel buses are active
❙Logic trigger not active
❙None of the serial or parallel buses are active
❙Logic trigger not active
The interlace mode will be activated automatically.
5 .5 ZOOM Function
The R&S®HMO1002 features a memory depth of 1 MB.
This allows the user to record long and complex signals
which can be analyzed in full detail with the Zoom func-
tion. To activate this feature, press the ZOOM key
This allows the user to record long and complex signals
which can be analyzed in full detail with the Zoom func-
tion. To activate this feature, press the ZOOM key
40
.
The screen will be divided into two sections. The upper
window displays the entire time base window whereas
the lower graticule shows an enlarged section of the
upper window. The enlarged signal section is marked by
two blue cursors in the original signal (upper window). If
several channels are activated in Zoom mode, all displayed
channels will be zoomed simultaneously by the same fac-
tor and at the identical position. Fig. 5.5 displays the Zoom
window with 100 µs per division. The signal was captured
within a time window of 12ms. The zoom area (lower grid)
also displays the parameter for zoom time base whereas
time is displayed above the zoom window. Z indicates the
zoom time base (zoom factor) and determines the width of
the zoom area displayed in the zoom window (10 divisions
x scaling per division). Tz indicates the zoom time and de-
termines the position of the zoom area.
window displays the entire time base window whereas
the lower graticule shows an enlarged section of the
upper window. The enlarged signal section is marked by
two blue cursors in the original signal (upper window). If
several channels are activated in Zoom mode, all displayed
channels will be zoomed simultaneously by the same fac-
tor and at the identical position. Fig. 5.5 displays the Zoom
window with 100 µs per division. The signal was captured
within a time window of 12ms. The zoom area (lower grid)
also displays the parameter for zoom time base whereas
time is displayed above the zoom window. Z indicates the
zoom time base (zoom factor) and determines the width of
the zoom area displayed in the zoom window (10 divisions
x scaling per division). Tz indicates the zoom time and de-
termines the position of the zoom area.
Fig. 5.5: Zoom function
The time base setting in the upper right of the display is
highlighted in gray while the zoom time base above the
zoom window is marked in white. The large knob in the
HORIZONTAL menu is used to change the zoom factor.
You can also press this knob. If the knob is pushed, the
time base setting is highlighted in white and the zoom time
base in gray. Now the knob is available to select the time
base setting. This allows you to change time base settings
without having to leave the zoom mode. Pressing the knob
again will highlight the cursors limiting the zoom area in
white, allowing you to use the knob to change the zoom
area. Now you can use the small knob in the horizontal
area of the control panel to move the position of the zoo-
med section across the entire signal. As described above,
pressing the large knob enables you to set the time base
but not the zoom factor. This in turn enables the small
knob to move the trigger position to define the relationship
of pre- and post captures/records.
highlighted in gray while the zoom time base above the
zoom window is marked in white. The large knob in the
HORIZONTAL menu is used to change the zoom factor.
You can also press this knob. If the knob is pushed, the
time base setting is highlighted in white and the zoom time
base in gray. Now the knob is available to select the time
base setting. This allows you to change time base settings
without having to leave the zoom mode. Pressing the knob
again will highlight the cursors limiting the zoom area in
white, allowing you to use the knob to change the zoom
area. Now you can use the small knob in the horizontal
area of the control panel to move the position of the zoo-
med section across the entire signal. As described above,
pressing the large knob enables you to set the time base
but not the zoom factor. This in turn enables the small
knob to move the trigger position to define the relationship
of pre- and post captures/records.
In the acquisition mode ROLL, it is generally not possible
to zoom in on the memory because the signal values of
the X axis are always captured with the maximum memory
depth. The acquisition mode NORMAL always includes
more samples in the memory than what can be shown in
the display. That explains why in this mode you are able
to zoom in on the memory. The same does not apply to
the values in the Y axis (amplitude). These values apply to
a specified axis and can therefore also be scaled in ROLL
mode.
to zoom in on the memory because the signal values of
the X axis are always captured with the maximum memory
depth. The acquisition mode NORMAL always includes
more samples in the memory than what can be shown in
the display. That explains why in this mode you are able
to zoom in on the memory. The same does not apply to
the values in the Y axis (amplitude). These values apply to
a specified axis and can therefore also be scaled in ROLL
mode.
5 .6 Navigation Function
The X-POS. function (MENU key in the HORIZONTAL
section) offers easy trigger time handling and allows it
to be entered numerically. The soft menu keys allow you
to set the trigger time to the minimum or the maximum
value, for instance. You can use the soft menu key TIME
REFERENCE to define where in the signal window to find
the trigger point value “0”. The signal is scaled by this refe-
rence point. You can use the universal knob in the Cursor/
Menu section to select the desired setting.
section) offers easy trigger time handling and allows it
to be entered numerically. The soft menu keys allow you
to set the trigger time to the minimum or the maximum
value, for instance. You can use the soft menu key TIME
REFERENCE to define where in the signal window to find
the trigger point value “0”. The signal is scaled by this refe-
rence point. You can use the universal knob in the Cursor/
Menu section to select the desired setting.
5 .7 Marker Function
Markers allow you to highlight specific positions on the
screen, e.g. a rising or falling slope, an unexpected signal
value or a search result. Markers can be used to identify
specific signal sections to zoom in on and to analyze the
data more closely.
screen, e.g. a rising or falling slope, an unexpected signal
value or a search result. Markers can be used to identify
specific signal sections to zoom in on and to analyze the
data more closely.
Use the soft menu to activate the marker function. Press
the MENU key in the HORIZONTAL section to open the
soft menu. Use the universal knob in the menu to select
MARKER. Once this mode is activated, you can press the
SET/CLR key to set a time marker at the 6th time unit (the
menu in the center of the grid must be deactivated). The
time markers are marked by a vertical line in gray-blue.
The knob X Position allows you to move the signal inclu-
ding the set marker. After identifying an important signal
the MENU key in the HORIZONTAL section to open the
soft menu. Use the universal knob in the menu to select
MARKER. Once this mode is activated, you can press the
SET/CLR key to set a time marker at the 6th time unit (the
menu in the center of the grid must be deactivated). The
time markers are marked by a vertical line in gray-blue.
The knob X Position allows you to move the signal inclu-
ding the set marker. After identifying an important signal
The ZOOM function is not available in ROLL mode.