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ARMA-C250-CRM
4. OPERATION
4.1 INTRODUCTION
The amplifier may be operated via the RS-485 serial interface, discrete interface or the front
panel controls and display. Each method provides full access to the unit's functions including
system monitoring of all key operating parameters, control of output attenuation and amplifier's
operational status.
In LOCAL mode, with the aid of the keypad and the LCD display, the operator can navigate
through a series of menus on the front panel which allow the setting of key parameters and digital
display of critical performance indicators. A series of LED indicators provides a summary of the
operational status of the amplifier, see TABLE 11 at page 22 & TABLE 12 at page 22. In
REMOTE mode, using the software supplied with this product or a similar communications
software, the same monitor and control functions can be accessed via the RS-485 interface, see
Section 5.4 Select Local Control Mode at page 37 for more information.
4.2 FRONT PANEL CONTROLS
Per TABLE 5 at page 17, six keys on the front panel provide access to the various display
functions and allow local control of the amplifier. The display functions via a menu system which
provides quick access to all available monitor and control features.
Generally, the [ ] and [ ] keys are the primary means by which the operator moves between
different displays and menu options. The [Enter] key is used to select a menu item and to confirm
changes made to operating parameters. The [Clear] key is used to reset the FAULT status on an
amplifier once the condition that caused the fault has been corrected. For specific instructions on
the functionality of each sub-menu refer to the appropriate section of this manual.
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