Measurement Control CMU
1100.4903.12 3.16 E-9
Measurement Control
This section gives a brief survey of the CMU’s measurement control using the function group RF Non
Signalling as an example. This includes a discussion of the different measurement modes and
measured quantities. Settings and measurement parameters frequently encountered are explained
from a general point of view.
The formal aspects of measurement control are discussed in more detail in Chapter 5 (Remote Control
– Basics).
The menus of the graphical user interface can be arranged in different ways. According to their tasks,
they form the following groups:
• The function groups RF, Audio, GSM900-MS, GSM1800-MS and GSM1900-MS, etc. The RF
function group is supplied with the firmware for the CMU base system. The function groups for
network test applications are optional and described in separate operating manuals.
• The two signalling modes Signalling and Non Signalling. The signalling properties are specific to
the individual networks and devices under test. In the function group RF only Non Signalling
measurements are provided.
• General configurations (Group Configuration, Connection Control), configurations specific to a
measured quantity (Power Configuration, Spectrum Configuration, etc.), and menus displaying the
results of the measurement (Power, Spectrum etc.).
In a more formal sense, the CMU uses measurement menus, popup menus, table menus, and
graphical measurement menus and dialog windows of various sizes. This aspect is discussed in the
preceding sections.
Configurations
The CMU offers a wide range of settings for input and output signals and measurements.
Configurations either refer to the whole function group (Connection Control) or to a particular
measurement.
Connection
Control
In function group RF, the Connect. Control softkey is located on the right side of
the title bar of each measurement and graphical measurement menu. It opens a
popup menu with several tabs configuring
• The analyzer settings and input path configuration (Analyzer).
• The RF generator (RF Generator)
• The RF and possibly the AF connectors to be used and the external
attenuation (AF/RF
).
• The reference signal and system clock (Sync.)
• The trigger settings (Trigger)
All settings made in the Connect. Control menu apply to the whole function
group and signalling mode. The Connection Control menu also contains the
input path and the trigger settings for the current function group and signalling
state.
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