18
Subject to change without notice
A q u i c k i n t r o d u c t i o n
3.5 Automatic measurements
In addition to cursor measurements the most important signal
parameters can be displayed. Your oscilloscope offers these
possibilities:
– the definition 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 now to 100 µs/div. and press the
QUICK VIEW key
10
.
Fig. 3.8: Quick View parameter measurement
Here you see the most important parameters of a signal dis
-
played:
– positive and negative
– rise and fall times
peak voltages
– mean voltage
Below the grid 10 more parameters are shown:
– 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.
You may also display up to six parameters of different signals.
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
:
Fig. 3.9:
Auto Measure
menu
Press the softmenu key beside MEAS. PLACE and choose the
number you want using the
universal knob. You may define the
parameter measurement using this menu. After switching on
the
MEASUREMENTS
with the appropriate softkey’s the parame
-
ter 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.
Fig. 3.10: Selection of parameters
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 statistic
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 iden-
tified by the colours of the respective channels, (here yellow
for channel 1 and blue for channel 2.)
Fig. 3.11: Measuring the parameters of two sources
3.6 Mathematical functions
In addition to cursor and parameter measurements your HMO
can also apply mathematical functions to the signals. By pres
-
sing the MATH key a short menu will open which allows you to
select one or two predefined
mathematical functions. A quick
setting of mathematical functions is possible by selecting the
menu item at the bottom. This mode allows you to select the
