Meinberg LANTIME, Operating Instructions Manual

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The Front Panel Layout
GPS FAIL LED
The FAIL LED is turned on whenever the TIME_SYN output is low (receiver is
not synchronized).
GPS 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. If a time
limit error occurs both LEDs FAIL and LOCK are blinking.
LC Display
The 4 x 16 character 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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