1GA16_1L.DOC ROHDE & SCHWARZ7
3 3 Operating ConceptOperating Concept
33.1 .1 OverviewOverview
The application is operated by means of softkeys which are organized in 4 hierarchical levels. When the
application software is started, the first (highest) softkey level is displayed; pressing a softkey triggers an
action and/or causes another softkey level to be entered. Each level may have up to eight active softkeys;
unassigned softkeys are blank. Same as in the UPD/UPL device software, function keys F5 to F12
correspond to softkeys #1 to #8.
Each time a softkey is pressed, the displayed softkey are cleared. No entries can be made while the
application program carries out setting sequences or calculations or waits for the end of a measurement.
The softkeys are blank. Only after the softkeys have been assigned new (application) functions can
further entries be made.
33.2 .2 Softkey LevelsSoftkey Levels
Functions of the four hierarchical softkey levels:
• Level 1 (main level): selection of measurement; implicit loading of a specific measurement module
• Level 2: selection of measurement mode (frequency sweep or FFT noise; see section 4, Measurement
Modes) with implicit (re)-loading of SPEAKER.SCO setup;
• Level 3: entry of parameters and start of measurement;
• Level 4: post-processing and restart of measurement.
D
RUN
EXIT
BACK
BACK
BACK START
START
(RE)ZOOM GOTO UPD HARDCOPY
IMPEDANC SOUND
PHASE
FFT RAND
FRQ SWP
VOLTAGE
FREQ RNG
SWPPNTS
Veq/Vb
RUNAWAYS
T H D
FIG 2: Operation of application software via softkey menus
33.3 .3 Softkeys Common to all LevelsSoftkeys Common to all Levels
Two of the altogether eight softkeys are assigned the same function at all levels and are always located at
the same position:
• the lefthand softkey (#1, F5) is used for returning to the next higher level (BACK); at the top level the
application is quit (EXIT; see section 7, Terminating the Application),
• the righthand softkey (#8, F12) is only active at levels 3 and 4 and used for starting the measurement;
at the end of the measurement the application is always at level 4.
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