Function Keys - AEA CIA-HF Operating Manual

As soon as you begin inputting numbers, the Numerical Entry screen will appear (refer to screens
section). Once you press ENTER to terminate an entry, the Analyzer will resume normal
operation according to the new center frequency value.
It is also possible to use the number keys in conjunction with the FREQ keys to add or subtract
values from the current center frequency value. For example, entering 5 0 0 FREQp will add 500
kHz to the current center frequency value. (The FREQq key subtracts the input value from the
center frequency.)
In the user Menu (described below), the WIDTH and FREQ keys perform different functions. The
WIDTHp and WIDTHq keys allow you to scroll through the user Menu selections. The FREQp
and FREQq keys allow you to adjust the CONTRAST level and SWR Bandwidth values once
you have scrolled to these selections.
The ENTER key has multiple functions. In the Numerical Entry screen, it is used to terminate new
center frequency values entered on the keypad. In the real time graphing screens, pressing the
ENTER key reverses the direction in which the F3-F5 softkeys scroll through data, scale values,
and screens, respectively. A small minus (-) sign will appear in the Logo Box when the Analyzer
is in the reverse scrolling mode. Press the ENTER key again to revert to forward scrolling. Once
you become familiar with the sequence of data, scale values, and screens, you may find that
backward scrolling is more efficient than forward scrolling.
Pressing the EXAM/PLOT key in any of the real time graphing screens allows you to freeze the
display when you want to more closely examine a plot. In this EXAM mode, only the width and
center frequency values are accessible in the Data Box. In addition, the words "EXAMINE PLOT"
are displayed in place of the Logo Box. You cannot access any more data or make any plot
changes in this mode. Once you have finished examining a plot, press EXAM/PLOT again to
resume normal operation.
NOTE: In the EXAM mode, power is removed from much of the Analyzer's circuitry. Enter this
mode whenever possible to extend battery life.

FUNCTION KEYS

The F1-F5 softkeys allow you to access different screens, data, and plot parameters.
F1: User Menu
Use the F1 softkey to toggle between the real time screens and the user Menu screen. This
screen contains a list of operational selections as well as a brief definition of each softkey. These
definitions are located in boxes directly above their corresponding softkeys.
The list of operational selections includes: TEST, KEYS, CONTRAST, SWR BW1, SWR BW2,
METER, and EXTRA FEATURES. A flashing arrow cursor is automatically positioned next to the
TEST selection whenever you enter this screen. Use the WIDTHp and WIDTHq keys to cursor
through the list.
When the cursor is aligned with the TEST option, press ENTER to initiate a series of self-
diagnostic tests. The word "TESTING" will flash on the TEST line until the self-diagnostics are
complete, whereupon one of the three types of messages will appear. If the self-diagnostics do
not detect any problems, the "PASSED" message will appear. If the Analyzer detects low battery
levels, the "LO BAT" massage will appear – refer to the Internal Access section for battery
replacement information. Finally, if any problems are detected during the self-diagnostics, a
"FAILURE" message will appear. In this case, call AEA's technical support department for
troubleshooting assistance (refer to In Case of Trouble section).
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