Operating instructions

OPERATING MANUAL 2945A
46882-311D 3-5
The information display area, which shows the parameters relating to the test, together with
settings and results, including bar charts. When the oscilloscope function is called up, all bar
charts are removed from the display and the standard or expanded oscilloscope screen displayed.
When the SPEC ANA test mode is selected, the display changes to the
SPECTRUM ANALYZER
screen.
The test title area, where the current test description is displayed. LED indicators adjacent to
each RF connector show the assignment of the connectors. This information is also shown in the
test title area of the display when in Dx TEST mode.
Soft key menus, left and right. These areas each have menus of soft key labels designated to the
adjacent soft keys. Some modes of operation only require one menu area of six selections. For
example, the Tx TEST mode and the AF TEST mode both display and use only the right hand
soft keys, the Rx TEST mode only the left hand soft keys. The Dx TEST mode uses the right
hand soft keys for transmitter test functions and the left hand soft keys for receiver functions.
Fig. 3-2 Typical displays
The various keys on the front panel are grouped according to their use or located adjacent to
associated items.
(2) Soft keys. To each side of the display screen are six unmarked keys. These are the ‘Soft’ keys
referred to in the display description above. The specific function of each of these keys is defined
by the instrument software and is indicated by the legend on the label immediately adjacent to it
on the display screen.
(3) Data Input keys. The right hand area of the front panel contains the ‘Data Input’ keys. These
keys are used to key in data for the various test parameters. They are arranged in three groups:-
Function keys on the left of the group are coloured orange. They are used to define the parameter
to be addressed; frequency, level, increment change or memory store location; before any digits
are entered. The [ON/OFF] function key acts directly on the selected function.
Digit keys are in the centre of the group and include the minus sign and decimal point. These
two keys have alternative symbols printed beneath them on the front panel which can be entered
as data where appropriate. No action other than a normal keypress is required, as only one of the
three options for each of these keys is relevant to the entry at any one time. The 'Delete' key
back-spaces over figures entered on the display to correct any errors. Corrections cannot be made
to an entry after a terminator key has been pressed for that entry. The original setting will be
retained if an entry is not completed. The incomplete entry will be replaced on the display by the
original setting when a keypress is made that confirms to the program that the setting being made
has been aborted.