Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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Non Signalling: Analyzer/Generator Menu CMU-K20/K21/K22/K23/K24
1115.6088.12 4.2 E-11
GSM Module Tests (Non Signalling)
The structure of this section is based on the configuration and measurement groups in function group
GSM400/850/900/1800/1900-MS Non Signalling , i.e. the menus of the graphical user interface. The
menus are described in the following order:
1. Overview of fundamental test settings and measurement results (Analyzer/Generator menu)
2. Measurement menus Power, Modulation, and Spectrum: Purpose of the measurements and
relation to the test specifications and conformance requirements, description of measurement
results, specific measurement configurations
3. General device configurations (Connection Control)
The most important menus within function group GSM400/850/900/1800/1900-MS Non Signalling are
shown in an overview at the end of chapter 3 in the present GSM manual.
Analyzer/Generator Menu
The Analyzer/Generator menu displays the essential results of the P/t Norm. GMSK, the Ext. Phase
Err. GMSK , and the Overview 8PSK applications and provides access to the most important
measurement settings. In particular, it configures the signals of the RF generator and defines the
properties of the CMU's RF analyzer.
•
The measurement control softkey P/t Norm. GMSK changes to Ext. Phase Err. GMSK or Overview
8PSK, depending on the application selected. This softkey controls the measurement, indicates its
status (RUN | HLT | OFF) and opens the configuration menu Power Configuration or Modulation
Configuration . The hotkeys associated to the measurement control softkey define the scope of the
Power or Modulation measurement.
•
The other softkeys on the right side are combined with various hotkeys (e.g. the hotkeys Template
PCL, Frequency, Channel, Frequency Offset, and Training Sequence belong to the softkey Analyzer
Settings). The softkey/hotkey combinations provide test settings and switch over between different
measurements.
Types of settings The purpose of the
An a lyzer/Generator menu is to provide quick access to the
most common Power and Modulation measurements and to present the basic
measurement results at a glance. The three measurement applications P/t Norm.
GMSK, Ext. Phase Err. GMSK , or Overview 8PSK can be selected with the
Application softkey. The remaining softkeys/hotkey combinations provide two
different types of settings:
•
General settings are valid for all applications of function group
GSM400/850/900/1800/1900-MS Non Signalling. Changing general settings in
any application will have an impact on all measurements and applications of
the function group. All general settings are also provided in the
Connection
Control menu (see p. 4.69 ff.). Examples of general settings are the RF input
level and trigger settings (softkey Analyzer Level) and the configuration of the
RF generator (softkey Generator) .
•
Specific settings are relevant for one application only, or they can be set
independently for several applications . Changing specific settings in an
application will not affect the other measurements and applications of the
function group. No specific settings are provided in the
Connection Control
menu (see p. 4.69 ff.). Examples of specific settings are the Repetition mode
(to be set independently for all applications) and Template PCL (relevant for the
P/t Norm. GMSK application only).
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