Frye FONIX FP40D - Manual (Page 19)

Introduction 11
1.5.2 Front Panel Buttons
There are nine function key buttons in the top row of the FP40 front panel. The function of each of
these keys changes as you move from screen to screen on the FP40.
The rest of the front panel buttons have specific functions that do not change with each new menu
selection.
Feed Feeds the paper through the printer.
Print Produces a hard copy of the data and graphs displayed on the LCD screen or
monitor screen.
Data/Graph Allows the screen presentation to be switched from graph to data table and
back again.
Start/Stop Starts or continues or stops a measurement action, depending on the particular
measurement task. When the instrument is running a continuous measure-
ment, this button starts or freezes the measurement on the display. START/
STOP is also used to activate a menu selection.
FP40s manufactured prior to 8/22/90 are marked START/CONTINUE.
Level Along with START/STOP button, initiates a leveling action that takes a
response measurement and develops a set of frequency response corrections to
adjust the signal so that it is at the correct level for each test frequency.
Reset Resets the test signal to the amplitude and frequency you have chosen in the
SETUP MENU and interrupts current operation.
Operate Starts and terminates the measurement operation of the FP40. Use operate to
turn the instrument on and off. (There is no operate button on the FP40-D.)
1.5.3 Front Panel Lamps
Line Power Signals that the FP40 is connected to the power line, and that the main rear
panel-mounted power switch is switched “on.” If the Battery Option is installed,
this lamp may also indicate that the battery is being charged.
Operate When lighted, signals that the instrument is active. (Not on the FP40-D).