Rohde Schwarz Rohde & Schwarz HMO1002 2-channel oscilloscope, Digital Storage oscilloscope, 21-1002-RS00 数据表

calculated from the amplitude of the measurement signal. 
A slope will be counted if the signal runs through the 
mean value. The measurement will only be applied to the 
selected channel.

COUNT –/ : This mode counts signal changes 
(slopes) from High Level to Low Level in the 
displayed view of the screen. The mean value is 

calculated from the amplitude of the measurement signal. 
A slope will be counted if the signal runs through the 
mean value. The measurement will only be applied to the 
selected channel.

TRIGGER FREQUENCY: This mode measures 
the frequency of the trigger signal bases on 
the period duration (f

Tr

). The source for the 

measurement is the currently set trigger source. The fre-
quency will be determined with a hardware counter with a 
high accuracy of 5 digits.

TRIGGER PERIOD: This mode measures the 
duration of periods of the trigger signal (with a 
hardware counter T

Tr

).

The automatic measurement results are displayed at the 
bottom of the screen. If “n/a” is displayed, the measurement 
is not applicable to the signal. For instance, this may be the 
case for a voltage measurement on a POD because only 
logic states without voltage reference are displayed here. 
If “?” is displayed, the display does not show a complete 
measurement result. For instance, the period to be measu-
red may not display completely and can consequently not be 
identified.

With the soft menu key CLEAR ALL the activated automa-
tic measurements will be switched off.

9  Analysis

The R&S®HMO1002 features different analysis functions 
for the collected data records which are displayed on the 
screen. Simple mathematical functions can be performed 
with the mathematical function. You can also activate the 
frequency analysis (FFT) by pressing the respective key. 
The function QUICK VIEW provides a quick overview for 
the signal properties. A masked-based PASS/FAIL test al-
lows you to monitor signals automatically.

The MATH menu in the VERTICAL section includes ma-
thematical functions for the recorded signal types. The 
mathematical functions track the changes of the included 
signals and only apply to the visible area.of the screen. If a 
signal is cut off at the edge of the screen may indicate that 
the corresponding mathematical curve is also truncated. 
The VOLTS/DIV knob can be used to scale an activated 
mathematical curve.

The MATH short menu allow you to configure the ma-
thematics function with the soft menu keys. Pressing the 
MENU key in the VERTICAL section will switch you to a 
more detailed display of the MA menu. With the first and
the third soft menu key, you can choose the respective 
channel (source) for the athematical calculation. You may 
only choose activated analog channels. The central soft 
menu key allows you to select the calculation type. Fol-
lowing calculation types (OPERATOR) can be selected.

You can use the universal knob in the to select operands 
and operators.

Fig. 9.1: Example of a mathematical waveform