The Front Panel Layout; Fail Led; Lock Led; Lc Display - Meinberg LANTIME/GPS Operating Instructions Manual

The Front Panel Layout

FAIL LED

The FAIL LED is turned on whenever the TIME_SYN output is low (receiver is
not synchronized). The FAIL LED is blinking when an user defined alarm has been
set or the internal single board computer is not responding.

LOCK LED

The LOCK LED is turned on when after power-up the receiver has acquired at least
four satellites and has computed its position. In normal operation the receiver position
is updated continuously as long as at least four satellites can be received. The LOCK
LED is blinking when the GPS has locked and the NTP is not synchronized.

LC Display

The LC display is used to show the receiver's status and let the user edit
parameters. The keys described below let the user select the desired menu. The next
chapter lists all available menus in detail. A quick reference of the available menus
and submenus can be found at the end of this document.

MENU Key

This key lets the user step through several display menus showing specific data.

CLR/ACK Key

This key has to be used when parameters are to be modified. When this key is
pressed the parameters that have been edited are saved in the battery buffered
memory. If the menu is left without pressing CLR/ACK all changes are discarded.

NEXT Key

When editing parameters (LCD cursor is visible) this key moves the cursor to the
next digit with respect to the next parameter to be edited. If the current menu just
displays data (cursor not visible) pressing this key switches to a submenu (if
available).

INC Key

When editing parameters this key increments the digit or letter at the cursor
position.
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