11
Subject to change without notice
F a m i l i a r i z e y o u r s e l f w i t h y o u r n e w H M O
Area
B
:
In the area VERTICAL you find all
controls of the analog channels
such as the position control knob
18
, the XY or
component tester
mode select key
19
, the vertical
gain adjustment knob
20
, the ex-
tended menu functions key
21
,
the channel select keys
22
to
25
,
(the two-channel versions have
only
22
23
) which also serve as
the selection keys for the optional
logic probes
24
25
. There are also
the mathematics function
26
, the
reference signal settings and bus
signal settings key
27
.
Area
C
:
This area TRIGGER of the control
panel offers all functions for the
adjustment of the trigger level
28
,
the selection of auto or normal
trigger
29
, the
trigger type
31
, the
trigger source
32
, single sweep
33
, the trigger slope
34
, the
trig
-
ger signal filters
36
. In addition,
there are status indicators show
-
ing whether a signal fulfills the
trigger conditions
30
and which
slope was selected
34
.
Area
D
:
The keys
37
38
39
on this control
panel area HORIZONTAL allow to
shift the trigger position horizon
-
tally, either step-by-step or using
the smaller one of the knobs. In
addition this menu allow to manually
set marker and set search criterias
for events. The backlighted key
39
controls the run or stop modes; the
key will light up red in stop mode.
The key
40
activates the zoom func
-
tion, the key
44
the selection of the
acquisition modes, the key
42
the
access to the time base menus. The
knob
43
allows to adjust the time
base speed.
To the left of the control panel there
are the soft keys
2
which control the menu functions.
2.3 Screen
The HMO is equipped with a 6.5“ (16.5 cm) LED backlighted
colour TFT display with VGA resolution (640 x 480 pixels). In
normal mode (no menus shown) there are 12 divisions in X
direction. If menus are shown, this will be reduced to 10 divi-
sions. On the left of the screen area little arrows
[1]
indicate
the reference potentials of the channels. The line above the
graticule contains status and settings information such as the
time base speed, the trigger delay and other trigger conditions,
the actual
sampling rate, and the
acquisition mode
[2]
. On the
right of the graticule a short menu is shown which contains the
most important settings of the channel actually being displayed;
these may be selected using the soft keys
[3]
. At the lower part
of the screen, measurement results of parameters and cursors,
the settings of the activated vertical channels, of the
reference
signal, and of the mathematically derived curves
[4]
are shown.
Within the graticule, the signals of the selected channels are
displayed. Normally, 8 vertical divisions are shown; it can be
virtually extended to 20 divisions which can be displayed using
the SCROLL BAR knob
5
.
2.4 Rear view
On the rear panel there are the main power switch
[1]
, the
receptacle for the interface modules
[2]
(USB / RS-232,
USB/
Ethernet, IEEE-488), the standard DVI connector
[3]
for the con
-
nection of external monitors and projectors, the
BNC connector
for the Y output
[4]
(of the channel selected for triggering) and
the external trigger input
[5]
. With the two-channel models this
connector is located on the front panel. Also here you can find
an additional USB port
[6]
and the main power input
[7].
At the
two channel instrument there is the the external trigger BNC
connector at the front of the instrument.
Fig. 2.7: Rear panel of the HMO2024
Fig. 2.3: Area B of the
control panel.
18
B
19
20
22
23
24
21
25
26
27
Fig. 2.4: Area C of the
control panel
28
C
29
30
33
31
34
35
36
32
Fig. 2.5: Area D of the
control panel
37
D
38
37
41
39
42
43
44
40
[2]
[1]
[5] [4]
[7]
[3]
[6]
Fig. 2.6: Screen
