Comtech EF Data XPA-200 - Manual (Page 21)

XPA200-7984-I-OPT1, X-Band SSPA Introduction
XPA200-7984-I-OPT1, REV.3 1-5
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1.7 Front Panel Controls (Continued)
The key-pad has six keys: Enter, Clear, Right Arrow, Left
Arrow, Up Arrow and Down Arrow. Each key has a logical function:
! Enter Key: (ENT)
Used to select a display function, or to execute a
command to change the configuration of the SSPA.
! Clear Key: (CLR)
Used to cancel a selection, or to cancel a
configuration change which has not been executed
using the "Enter" key. After pressing the "Clear"
key the display will return to the previous
selection.
! Right and Left Arrow Keys:
These keys are used to select or change an operating
mode within a function, or to input or change the
configuration input data (numbers).
! Up and Down Arrow Key:
These keys are used to move to the next operation
mode, or to move the cursor to select a specific
parameter or digit within an operating mode
selected.
1.8 Front Panel Indicators
There are six LED indicator lights on the front panel which
indicate the status of the SSPA and provide summary fault
information. The indicators are defined as follows: