8
The GEN170 Front Panel Layout
FAIL LED and LOCK LED
The red LED labeled FAIL is turned on after power-up and stays on until the current
time has either been acknowledged via the ACK key in the front panel, or the time has
been set via the serial interface. The green LOCK LED reflects the generated DCF77
compatible AM time marks.
LC Display
The 4 x 16 character LC display is used to show the system's time and 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 rsp. 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.
