Measurement Menus

A measurement menu provides the basic settings controlling a measurement and at the same time displays the main results. Together with the graphical measurement menus, measurement menus constitute the basic level in the operating system of the CMU. They can only be replaced by other measurement menus or graphical measurement menus. To change the menu, the hotkeys at the lower edge of the measurement menu are used.

Example of a measurement menu

Header

The header consists of the heading and the symbols for the operating mode and test mode (signalling state, if applicable in the function group).

The heading briefly describes the purpose of the menu (e.g. type of settings, measurement group, function group, etc.)
The operating mode, i.e. the type of operation/control of the CMU, is indicated by the symbols at the right edge of the header. The following operating modes are available:

			Manual mode

			Remote control via IEC-bus

			Remote debug mode (activated in the Setup – Remote tab).
		The function group is indicated to the left of the operating mode:


			RF measurements

			Audio Analyzer and Generator (with option CMU-B41)


			In network test applications, the signalling states that are specific to the applications are indicated. The corresponding icons are discussed in the relevant manuals (see GSMxxx-MS etc.).

General settings

	The Connect. Control softkey is located to the right of the header of each measurement or graphical measurement menu. This softkey opens a popup menu defining the input and output connectors, the external attenuation, the reference frequency as well as many network-specific settings. In the Signalling test modes of many network options, the Connection Control menu is also used to set up and terminate a connection between the CMU and the DUT. The Connection Control menu also contains the input path and the trigger settings for the current function group and signalling state.

Measurement control softkey	The measurement control softkey (main softkey) controls the measurement application and indicates its state (RUN \| HLT \| OFF). Its labeling corresponds to the menu heading. For large measurement groups that are subdivided into several applications, the labeling indicates the current application. The hotkey bar associated to the measurement control softkey provides parameters to define the scope of the measurement (statistical settings). Pressing the measurement control softkey twice opens a popup menu providing measurement-specific settings.

Softkeys for important settings	The softkeys below the measurement control softkey provide groups of important measurement settings. Each softkey activates an associated hotkey bar. An active softkey is displayed in inverse video. The Menus softkey displays all measurements in the function group, so it is possible to change from one measurement to another.

Hotkeys	If one of the softkeys is activated, the hotkeys below the test diagram provide sub-functions for this softkey. If the Menus softkey is activated, the hotkeys change between the various measurement groups of the current function group.

Popup box	Popup boxes are associated to all hotkeys that require a selection or input of parameters. These popup boxes are operated like input fields in the measurement menus (input of numbers and characters) or list fields (selection from a range of alternative settings). Popup boxes are closed when the calling hotkey is pressed again or when another popup box is opened. They remain open when another softkey is selected, so it is possible to easily test the effect of repeated changes of a parameter.

Settings table	The Settings table in the right half of the menu gives an overview of the current measurement settings. The entries vary with the measurement and measurement applications. The rotary knob scrolls and expands the Settings table.